WO2020013638A1 - 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 - Google Patents
변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 Download PDFInfo
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- WO2020013638A1 WO2020013638A1 PCT/KR2019/008584 KR2019008584W WO2020013638A1 WO 2020013638 A1 WO2020013638 A1 WO 2020013638A1 KR 2019008584 W KR2019008584 W KR 2019008584W WO 2020013638 A1 WO2020013638 A1 WO 2020013638A1
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- WIPO (PCT)
- Prior art keywords
- conjugated diene
- modified conjugated
- based polymer
- bis
- polymer
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- 229920000642 polymer Polymers 0.000 title claims abstract description 164
- 150000001993 dienes Chemical class 0.000 title claims abstract description 129
- 229920001971 elastomer Polymers 0.000 title claims abstract description 59
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- 239000000203 mixture Substances 0.000 title claims abstract description 35
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- 230000009477 glass transition Effects 0.000 claims abstract description 27
- 241001441571 Hiodontidae Species 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 17
- 238000009826 distribution Methods 0.000 claims description 13
- 125000004429 atom Chemical group 0.000 claims description 11
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 50
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- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 16
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- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 14
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- 238000006011 modification reaction Methods 0.000 description 8
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
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- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 6
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- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 4
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- 125000005842 heteroatom Chemical group 0.000 description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 4
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 3
- QNRMTGGDHLBXQZ-UHFFFAOYSA-N buta-1,2-diene Chemical compound CC=C=C QNRMTGGDHLBXQZ-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
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- 239000007822 coupling agent Substances 0.000 description 3
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- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- IPJPAQIHUIKFLV-UHFFFAOYSA-N n-trimethylsilylaniline Chemical compound C[Si](C)(C)NC1=CC=CC=C1 IPJPAQIHUIKFLV-UHFFFAOYSA-N 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
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- 230000000379 polymerizing effect Effects 0.000 description 3
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- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
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- JLXXLZXMQYJAPW-UHFFFAOYSA-N 3-[[3-(dimethylamino)propyl-diethoxysilyl]oxy-diethoxysilyl]-N,N-dimethylpropan-1-amine Chemical compound CN(C)CCC[Si](O[Si](OCC)(OCC)CCCN(C)C)(OCC)OCC JLXXLZXMQYJAPW-UHFFFAOYSA-N 0.000 description 2
- VDHJVNAPIIJAPD-UHFFFAOYSA-N 3-[[3-(dimethylamino)propyl-dimethoxysilyl]oxy-dimethoxysilyl]-N,N-dimethylpropan-1-amine Chemical compound CN(C)CCC[Si](O[Si](OC)(OC)CCCN(C)C)(OC)OC VDHJVNAPIIJAPD-UHFFFAOYSA-N 0.000 description 2
- OSPIPIMFODYXCW-UHFFFAOYSA-N 3-[[3-(dimethylamino)propyl-dipropoxysilyl]oxy-dipropoxysilyl]-N,N-dimethylpropan-1-amine Chemical compound C(CC)O[Si](O[Si](OCCC)(OCCC)CCCN(C)C)(OCCC)CCCN(C)C OSPIPIMFODYXCW-UHFFFAOYSA-N 0.000 description 2
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- POUMFZCNIKXYKK-UHFFFAOYSA-N 3-[[dimethoxy-[3-[methyl(propyl)amino]propyl]silyl]oxy-dimethoxysilyl]-N-methyl-N-propylpropan-1-amine Chemical compound CO[Si](O[Si](OC)(OC)CCCN(C)CCC)(OC)CCCN(C)CCC POUMFZCNIKXYKK-UHFFFAOYSA-N 0.000 description 2
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- 239000002671 adjuvant Substances 0.000 description 1
- 125000004450 alkenylene group Chemical group 0.000 description 1
- 125000004419 alkynylene group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000000732 arylene group Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229920003211 cis-1,4-polyisoprene Polymers 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- LEKSIJZGSFETSJ-UHFFFAOYSA-N cyclohexane;lithium Chemical compound [Li]C1CCCCC1 LEKSIJZGSFETSJ-UHFFFAOYSA-N 0.000 description 1
- BOTLEXFFFSMRLQ-UHFFFAOYSA-N cyclopentyloxycyclopentane Chemical compound C1CCCC1OC1CCCC1 BOTLEXFFFSMRLQ-UHFFFAOYSA-N 0.000 description 1
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 1
- WXYCAWVPIGSVRI-UHFFFAOYSA-N diethoxy-methyl-(3-trimethylsilylpropyl)silane Chemical compound CCO[Si](C)(OCC)CCC[Si](C)(C)C WXYCAWVPIGSVRI-UHFFFAOYSA-N 0.000 description 1
- GSYVJAOBRKCNOT-UHFFFAOYSA-N diethoxymethyl-[3-[3-(diethoxymethylsilyl)propyltetrasulfanyl]propyl]silane Chemical compound CCOC(OCC)[SiH2]CCCSSSSCCC[SiH2]C(OCC)OCC GSYVJAOBRKCNOT-UHFFFAOYSA-N 0.000 description 1
- PQZTVWVYCLIIJY-UHFFFAOYSA-N diethyl(propyl)amine Chemical compound CCCN(CC)CC PQZTVWVYCLIIJY-UHFFFAOYSA-N 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 125000001891 dimethoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical compound [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 229920005558 epichlorohydrin rubber Polymers 0.000 description 1
- DECIPOUIJURFOJ-UHFFFAOYSA-N ethoxyquin Chemical compound N1C(C)(C)C=C(C)C2=CC(OCC)=CC=C21 DECIPOUIJURFOJ-UHFFFAOYSA-N 0.000 description 1
- 235000019285 ethoxyquin Nutrition 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- BLHLJVCOVBYQQS-UHFFFAOYSA-N ethyllithium Chemical compound [Li]CC BLHLJVCOVBYQQS-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 229920005555 halobutyl Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 125000000592 heterocycloalkyl group Chemical group 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- AFRJJFRNGGLMDW-UHFFFAOYSA-N lithium amide Chemical compound [Li+].[NH2-] AFRJJFRNGGLMDW-UHFFFAOYSA-N 0.000 description 1
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 description 1
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 1
- CETVQRFGPOGIQJ-UHFFFAOYSA-N lithium;hexane Chemical compound [Li+].CCCCC[CH2-] CETVQRFGPOGIQJ-UHFFFAOYSA-N 0.000 description 1
- NRUBUZBAZRTHHX-UHFFFAOYSA-N lithium;propan-2-ylazanide Chemical compound [Li+].CC(C)[NH-] NRUBUZBAZRTHHX-UHFFFAOYSA-N 0.000 description 1
- SZAVVKVUMPLRRS-UHFFFAOYSA-N lithium;propane Chemical compound [Li+].C[CH-]C SZAVVKVUMPLRRS-UHFFFAOYSA-N 0.000 description 1
- XBEREOHJDYAKDA-UHFFFAOYSA-N lithium;propane Chemical compound [Li+].CC[CH2-] XBEREOHJDYAKDA-UHFFFAOYSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- DVSDBMFJEQPWNO-UHFFFAOYSA-N methyllithium Chemical compound C[Li] DVSDBMFJEQPWNO-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- ZLDHYRXZZNDOKU-UHFFFAOYSA-N n,n-diethyl-3-trimethoxysilylpropan-1-amine Chemical compound CCN(CC)CCC[Si](OC)(OC)OC ZLDHYRXZZNDOKU-UHFFFAOYSA-N 0.000 description 1
- ZUHZZVMEUAUWHY-UHFFFAOYSA-N n,n-dimethylpropan-1-amine Chemical compound CCCN(C)C ZUHZZVMEUAUWHY-UHFFFAOYSA-N 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- NHKJPPKXDNZFBJ-UHFFFAOYSA-N phenyllithium Chemical compound [Li]C1=CC=CC=C1 NHKJPPKXDNZFBJ-UHFFFAOYSA-N 0.000 description 1
- 229960005141 piperazine Drugs 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229930000044 secondary metabolite Natural products 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- ODZPKZBBUMBTMG-UHFFFAOYSA-N sodium amide Chemical compound [NH2-].[Na+] ODZPKZBBUMBTMG-UHFFFAOYSA-N 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- ASAOXGWSIOQTDI-UHFFFAOYSA-N triethoxy-[2-(2-triethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCSSSSCC[Si](OCC)(OCC)OCC ASAOXGWSIOQTDI-UHFFFAOYSA-N 0.000 description 1
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 1
- KLFNHRIZTXWZHT-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltrisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSCCC[Si](OCC)(OCC)OCC KLFNHRIZTXWZHT-UHFFFAOYSA-N 0.000 description 1
- QKJGTZOWMVHEHS-UHFFFAOYSA-N triethoxy-[3-(phenyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSC1=CC=CC=C1 QKJGTZOWMVHEHS-UHFFFAOYSA-N 0.000 description 1
- YYHRCUUECDJXPQ-UHFFFAOYSA-N triethoxy-[3-[4-[3-[ethoxy(dimethyl)silyl]propyl]piperazin-1-yl]propyl]silane Chemical compound C(C)O[Si](CCCN1CCN(CC1)CCC[Si](OCC)(OCC)OCC)(C)C YYHRCUUECDJXPQ-UHFFFAOYSA-N 0.000 description 1
- JSXKIRYGYMKWSK-UHFFFAOYSA-N trimethoxy-[2-(2-trimethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CO[Si](OC)(OC)CCSSSSCC[Si](OC)(OC)OC JSXKIRYGYMKWSK-UHFFFAOYSA-N 0.000 description 1
- JTTSZDBCLAKKAY-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSSSCCC[Si](OC)(OC)OC JTTSZDBCLAKKAY-UHFFFAOYSA-N 0.000 description 1
- XNWCJGVZGOCGBT-UHFFFAOYSA-N trimethoxy-[3-[4-(3-trimethoxysilylpropyl)piperazin-1-yl]propyl]silane Chemical compound CO[Si](OC)(OC)CCCN1CCN(CCC[Si](OC)(OC)OC)CC1 XNWCJGVZGOCGBT-UHFFFAOYSA-N 0.000 description 1
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical group CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/02—Monomers containing only one unsaturated aliphatic radical
- C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F12/06—Hydrocarbons
- C08F12/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/25—Incorporating silicon atoms into the molecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F36/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F36/04—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/22—Incorporating nitrogen atoms into the molecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/04—Monomers containing three or four carbon atoms
- C08F10/08—Butenes
- C08F10/10—Isobutene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/14—Monomers containing five or more carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/04—Polymerisation in solution
- C08F2/06—Organic solvent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/10—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl-aromatic monomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L35/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to a modified conjugated diene-based polymer having excellent workability while improving rolling resistance and wear characteristics, and a rubber composition comprising the same.
- a method of reducing the hysteresis loss of the vulcanized rubber In order to reduce the rolling resistance of the tire, there is a method of reducing the hysteresis loss of the vulcanized rubber.
- a repulsive elasticity of 50 ° C. to 80 ° C., tan ⁇ , Goodrich heat generation and the like are used as an evaluation index of the vulcanized rubber. That is, a rubber material having a high rebound elasticity at the above temperature, or a small tan ⁇ and good rich heat generation is preferable.
- the greatest advantage of solution polymerization over emulsion polymerization is that the vinyl structure content and styrene content that define rubber properties can be arbitrarily controlled, and molecular weight and physical properties can be adjusted by coupling or modification. It can be adjusted. Therefore, it is easy to change the structure of the final manufactured SBR or BR, and can reduce the movement of the chain end by the binding or modification of the chain end and increase the bonding strength with the filler such as silica or carbon black. It is used a lot as a rubber material.
- solution polymerization SBR When such a solution polymerization SBR is used as a rubber material for tires, by increasing the vinyl content in the SBR, the glass transition temperature of the rubber can be increased to not only control tire demand properties such as running resistance and braking force, but also increase the glass transition temperature. Proper adjustment can reduce fuel consumption.
- the solution polymerization SBR is prepared using an anionic polymerization initiator, and is used by binding or modifying the chain ends of the formed polymer using various modifiers. For example, US Pat. No.
- 4,397,994 discloses a technique in which the active anion at the chain end of a polymer obtained by polymerizing styrene-butadiene in a nonpolar solvent using alkyllithium, which is a monofunctional initiator, is bound using a binder such as a tin compound. It was.
- the present invention has been made to solve the problems of the prior art, by controlling the glass transition temperature, 1,2-vinyl bond content, Mooney viscosity and degree of branching of the modified conjugated diene-based polymer, the rolling resistance and wear resistance of the final tire To provide a modified conjugated diene-based polymer that can improve the processability and improve the processability.
- the present invention is a modified conjugated diene-based polymer that meets the conditions of i) to v), i) glass transition temperature: -90 °C to -50 °C ii) Mooney viscosity measured under ASTM D1646 conditions: 50 to 100, iii) 1,2-vinyl bond content relative to the total weight of the polymer: 30.0 wt% or less, iv) molecular weight distribution (PDI; MWD): 1.5 to 3.5, and , v) a modified conjugated diene-based polymer having a Mooney relaxation ratio measured at 110 ° C. or less: 0.7.
- the present invention also provides a rubber composition comprising the modified conjugated diene-based polymer and a filler.
- the modified conjugated diene-based polymer according to the present invention has a high degree of branching while satisfying a specific range of glass transition temperature and 1,2-vinyl bond content, and is excellent in rolling resistance and abrasion resistance, as well as having a high degree of branching. Nevertheless, workability can also be improved by having a Mooney viscosity controlled to an appropriate level.
- polymer' refers to a polymer compound prepared by polymerizing monomers, whether of the same or a different kind.
- polymer encompasses the term homopolymer and copolymer which are commonly used to refer to polymers made from only one monomer.
- 'vinyl content' refers to butadiene contained at position 1,2 in the polymer chain based on the conjugated diene monomer (butadiene, etc.) portion (total amount of polymerized butadiene) in the polymer. It refers to the mass (or weight) percent of.
- the term 'monovalent hydrocarbon group' refers to a monovalent atomic group in which carbon and hydrogen are bonded, such as a monovalent alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkyl group and an aryl group including one or more unsaturated bonds.
- the minimum number of carbon atoms of the substituent represented by the monovalent hydrocarbon may be determined according to the type of each substituent.
- the term 'bivalent hydrocarbon group' is a two-membered carbon and hydrogen, such as a divalent alkylene group, an alkenylene group, an alkynylene group, a cycloalkylene group, a cycloalkylene group including one or more unsaturated bonds, and an arylene group. It may mean a valence atom group, and the minimum number of carbon atoms of a substituent represented by a divalent hydrocarbon may be determined according to the type of each substituent.
- the term 'alkyl group' may mean a monovalent aliphatic saturated hydrocarbon, and may be linear alkyl groups such as methyl, ethyl, propyl and butyl, and isopropyl, sec-butyl, tertiary, It may be meant to include all branched alkyl groups such as tert-butyl and neo-pentyl.
- alkenyl group may refer to a monovalent aliphatic unsaturated hydrocarbon including one or two or more double bonds.
- alkynyl group may refer to a monovalent aliphatic unsaturated hydrocarbon including one or two or more triple bonds.
- alkylene group may refer to a divalent aliphatic saturated hydrocarbon such as methylene, ethylene, propylene and butylene.
- the term 'aryl group' may mean a cyclic aromatic hydrocarbon, and also a monocyclic aromatic hydrocarbon in which one ring is formed, or a polycyclic aromatic hydrocarbon in which two or more rings are combined. hydrocarbons) can be included.
- heterocyclic group' means that a carbon atom in a cycloalkyl group or an aryl group is substituted with one or more hetero atoms, and for example, may include both a heterocycloalkyl group or a heteroaryl group.
- compositions claimed through the use of the term “comprising”, unless stated to the contrary, may contain any additional additives, adjuvants, or compounds, whether polymer or otherwise. It may include.
- the term 'consisting essentially of' excludes any other component, step or procedure from the scope of any subsequent description, except that it is not essential to operability.
- the term 'consisting of' excludes any ingredient, step or procedure not specifically described or listed.
- 'glass transition temperature (Tg)' is a sample of a modified conjugated diene-based polymer, and in accordance with ISO 22768: 2006, using a differential scanning calorimeter (trade name "DSC3200S” manufactured by McScience Inc.) and 50 mL of helium. The DSC curve was recorded while raising the temperature from -100 ° C to 10 ° C / min under the flow of / min, and the peak top of the DSC differential curve was measured as the glass transition temperature.
- '1,2-vinyl bond content' was measured and analyzed using Varian VNMRS 500 MHz NMR.
- the solvent was 1,1,2,2-tetrachloroethane, and the solvent peak was Calculated from 6.0 ppm, 7.2-6.9 ppm of random styrene, 6.9-6.2 ppm of block styrene, 5.8-5.1 ppm of 1,4-vinyl and 1,2-vinyl, 5.1-4.5 ppm of 1,2-vinyl It was measured by calculating the 1,2-vinyl bond content in the whole polymer as a peak.
- 'weight average molecular weight (Mw)', 'number average molecular weight (Mn)' and 'molecular weight distribution (MWD)' are measured through GPC (Gel permeation chromatohraph) analysis, and the molecular weight distribution curve is measured will be.
- Molecular weight distribution (PDI, MWD, Mw / Mn) is calculated from each of the above measured molecular weights.
- the GPC uses a combination of two PLgel Olexis (Polymer Laboratories) columns and one PLgel mixed-C (Polymer Laboratories) columns and the GPC standard material is PS (polystyrene) when calculating the molecular weight.
- GPC measurement solvent is prepared by mixing 2 wt% of an amine compound with tetrahydrofuran.
- MV 'Money viscosity
- -S / R 'Money relaxation rate
- the Mooney viscosity (MV, (ML1 + 4, @ 100 °C MU) is used MV-2000 (ALPHA Technologies, Inc.) Rotor Speed 2 ⁇ 0.02 rpm, Large Rotor at 100 °C, and the sample used was left at room temperature (23 ⁇ 3 °C) for more than 30 minutes and collected 27 ⁇ 3 g and filled into the die cavity. The platen is operated and measured for 4 minutes After the Mooney viscosity measurement, the value of the slope of the Mooney viscosity change appearing as the torque is released is measured, and the absolute value thereof is used as the Mooney relaxation rate.
- the 'Si content' is measured using an inductively coupled plasma luminescence analyzer (ICP-OES; Optima 7300DV) as an ICP analysis method.
- ICP-OES inductively coupled plasma luminescence analyzer
- Optima 7300DV inductively coupled plasma luminescence analyzer
- about 0.7 g of the sample was placed in a platinum crucible (Pt crucible), about 1 mL of concentrated sulfuric acid (98 wt%, Electronic grade) was heated at 300 ° C. for 3 hours, and the sample was After the conversation in the electric furnace (Thermo Scientific, Lindberg Blue M) in the program of steps 1 to 3,
- step 1 initial temp 0 °C, rate (temp / hr) 180 °C / hr, temp (holdtime) 180 °C (1hr)
- step 2 initial temp 180 °C, rate (temp / hr) 85 °C / hr, temp (holdtime) 370 °C (2hr)
- step 3 initial temp 370 °C, rate (temp / hr) 47 °C / hr, temp (holdtime) 510 °C (3hr)
- the 'N content' may be measured through an NSX analysis method, for example, and the NSX analysis method is measured using a trace amount nitrogen quantitative analyzer (NSX-2100H).
- a trace amount nitrogen quantitative analyzer NSX-2100H
- the trace nitrogen quantitative analyzer Auto sampler, horizontal furnace, PMT & Nitrogen detector
- ozonizer 300 ml / Set the carrier gas flow rate to min, set the heater to 800 ° C and wait for about 3 hours to stabilize the analyzer.
- a calibration curve with 5 ppm, 10 ppm, 50 ppm, 100 ppm and 500 ppm ranges was prepared using the Nitrogen standard (AccuStandard S-22750-01-5 ml) to obtain an area corresponding to each concentration. Then make a straight line using the ratio of concentration to area. Thereafter, a ceramic boat containing 20 mg of the sample is placed in an auto sampler of the analyzer, the area is obtained by measurement, and the N content is calculated using the area of the obtained sample and the calibration curve. At this time, the sample is a modified conjugated diene-based polymer in which the solvent is removed by stirring in hot water heated with steam, and residual monomers, residual denaturants and oils are removed.
- the modified conjugated diene-based polymer according to the present invention is a modified conjugated diene-based polymer that satisfies the following conditions i) to v), these conditions i) glass transition temperature: -90 °C to -50 °C, ii) ASTM D1646 conditions Mooney viscosity measured at: 50 to 100, iii) 1,2-vinyl bond content relative to the total weight of the polymer: 30.0 wt% or less, iv) molecular weight distribution (PDI; MWD): 1.5 to 3.5, and v) at 110 ° C Mooney relaxation rate measured: Provides a modified conjugated diene-based polymer of 0.7 or less.
- the modified conjugated diene-based polymer may include a repeating unit derived from a conjugated diene monomer and a functional group derived from a modifier.
- the conjugated diene-based monomer-derived repeating unit may mean a repeating unit formed when the conjugated diene-based monomer is polymerized, and the modifier-derived functional group is present at one end of the active polymer through a reaction or coupling between the active polymer and the modifying agent. It can mean a functional group derived from.
- the conjugated diene monomer is 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene, 2 It may be at least one selected from the group consisting of -phenyl-1,3-butadiene and 2-halo-1,3-butadiene (halo means a halogen atom).
- the modified conjugated diene-based polymer is a copolymer comprising an aromatic vinyl monomer-derived repeating unit, it may comprise at least 30% by weight, or 30 to 50% by weight of the aromatic vinyl monomer-derived repeating unit, this range The balance between rolling resistance and wet road resistance is excellent within.
- the aromatic vinyl monomer is, for example, styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4- (p-methylphenyl) styrene, and 1 It may be at least one selected from the group consisting of -vinyl-5-hexyl naphthalene.
- the modified conjugated diene-based polymer may be a copolymer further comprising a diene-based monomer derived from C 1 to 10 together with the repeating unit derived from the conjugated diene monomer.
- the diene monomer-derived repeating unit may be a repeating unit derived from a diene monomer different from the conjugated diene monomer, and the diene monomer different from the conjugated diene monomer may be, for example, 1,2-butadiene. .
- the modified conjugated diene-based polymer is a copolymer further comprising a diene monomer
- the modified conjugated diene-based polymer is more than 0% to 1% by weight, greater than 0% to 0.1% by weight of the repeating unit derived from the diene monomer, It may be included in more than 0% by weight to 0.01% by weight, or more than 0% by weight to 0.001% by weight, there is an effect of preventing the gel production within this range.
- the copolymer may be a random copolymer, in this case there is an excellent balance between the physical properties.
- the random copolymer may mean that the repeating units constituting the copolymer are randomly arranged.
- the modified conjugated diene-based polymer according to an embodiment of the present invention should satisfy the glass transition temperature is -90 °C to -50 °C, preferably -80 °C to -50 °C.
- the glass transition temperature may vary depending on the content of the aromatic vinyl monomer which is the comonomer, but is not limited only by the content of the comonomer, and may be fluid depending on the polymerization method and conditions.
- the modified conjugated diene-based polymer prepared to satisfy the above range may have excellent affinity with a filler such as silica or carbon black when blended to improve wear resistance, and when the glass transition temperature is higher than -50 ° C, wear resistance and The same tensile properties may be lowered, and if it is lower than ⁇ 90 ° C., workability may be poor, and viscoelastic properties such as rolling resistance and wet road resistance may be deteriorated, so it is preferable to satisfy the above range.
- a filler such as silica or carbon black
- the modified conjugated diene-based polymer according to an embodiment of the present invention should satisfy that the Mooney viscosity (Mooney viscosity) measured in the conditions of ASTM D1646 50 to 100, specifically 70 to 100, preferably 70 to 90.
- Mooney viscosity Mooney viscosity
- workability may be considerably excellent.
- the degree of branching of the modified conjugated diene polymer through the control of the polymerization method and conditions It can be improved, thereby providing a modified conjugated diene-based polymer that satisfies the glass transition temperature, Mooney viscosity and Mooney relaxation rate in the above range.
- the modified conjugated diene-based polymer according to an embodiment of the present invention needs to satisfy that the 1,2-vinyl bond content is 30 wt% or less based on the total weight of the polymer.
- the vinyl content may refer to the weight% of the 1,2-added conjugated diene monomer instead of 1,4-addition to the conjugated diene copolymer composed of a monomer having a vinyl group and an aromatic vinyl monomer. It may be influenced by the reaction environment at the time of completion of the polymerization reaction and the time of completion of the polymerization reaction.
- the 1,2-vinyl bond content may be 5 to 30% by weight, preferably 5 to 15% by weight, depending on the wear and rolling resistance properties according to the 1,2-vinyl bond content. If the 1,2-vinyl bond content exceeds 30% by weight, the glass transition temperature may be affected, and the wear property may be extremely poor, and thus the modified conjugated diene-based polymer may be affected. It is necessary to pay attention to the reaction conditions in the preparation of the 1,2-vinyl bond content to satisfy the above range.
- the modified conjugated diene-based polymer according to an embodiment of the present invention has a number average molecular weight (Mn) of 1,000 g / mol to 2,000,000 g / mol and 10,000 g / as measured by gel permeation chromatography (GPC). mol to 1,000,000 g / mol, or 100,000 g / mol to 800,000 g / mol, with a weight average molecular weight (Mw) of 1,000 g / mol to 3,000,000 g / mol, 10,000 g / mol to 2,000,000 g / mol, or 100,000 It may be g / mol to 1,500,000 g / mol, there is an excellent effect of rolling resistance and wet road resistance within this range.
- Mn number average molecular weight
- Mw weight average molecular weight
- the modified conjugated diene-based polymer has a molecular weight distribution (PDI; MWD; Mw / Mn) of 1.5 to 3.5, preferably, 1.5 to 3.0, or 1.7 to 3.0, or 1.7 to 2.6, Within the range, the tensile and viscoelastic properties are excellent, and the balance between the physical properties is excellent.
- PDI molecular weight distribution
- the modified conjugated diene-based polymer has a molecular weight distribution curve by gel permeation chromatography (GPC) may have a unimodal form or a bimodal form, the unimodal and bimodal
- the curvilinear form of can be determined by the methodological aspect of the continuous and batch polymerization and the aspect of the modification reaction carried out by the denaturing or coupling agent.
- the Mooney relaxation rate measured at 110 ° C. of the modified conjugated diene polymer may be an index of the degree of branching and molecular weight of the modified conjugated diene copolymer.
- the Mooney relaxation rate at 110 ° C. of the modified conjugated diene-based polymer is 0.7 or less, preferably 0.6 or less, more preferably 0.5 or less, and most preferably 0.45 or less.
- the Mooney relaxation rate is low, it may mean that the degree of branching is high and the molecular weight is large, and the lower limit thereof is not particularly limited, but may be preferably 0.05 or more.
- the modified conjugated diene-based polymer according to the present invention has a Mooney relaxation ratio of 0.7 or less, thereby exhibiting the effect of the present embodiment.
- the Mooney relaxation rate measured at 110 ° C. of the modified conjugated diene-based polymer may be an index of the branching degree and molecular weight of the modified conjugated diene-based polymer as described above, and as the Mooney relaxation rate decreases, The degree of branching and molecular weight of conjugated diene-based polymers tend to increase.
- the Mooney relaxation rate may be related to the Mooney viscosity described above. In the case of the modified conjugated diene-based polymer having an equivalent Mooney viscosity, the more branching, the Mooney relaxation rate decreases, so the linearity at equivalent Mooney viscosity It can also be used as an indicator.
- the Mooney viscosity of the modified conjugated diene-based polymer can be achieved by controlling the weight average molecular weight and the degree of branching of the polymer to be produced.
- the degree of branching is increased, and when the weight average molecular weight is increased, the degree of branching may be controlled, and the degree of branching may be controlled, and the amount of the functional group of the modifier, the amount of the modifier added, or the progress of metallization may be controlled.
- the modified conjugated diene-based polymer according to an embodiment of the present invention may have a N and Si content of 25 ppm or more, 50 ppm or more, 70 ppm to 10,000 ppm, or 100 ppm to 5,000 ppm, respectively, by weight, within this range, there is an effect excellent in mechanical properties such as tensile properties and viscoelastic properties of the rubber composition comprising the modified conjugated diene-based polymer.
- the N content and Si content may mean each of the content of Si atoms present in the modified conjugated diene-based polymer.
- the N atoms and Si atoms may be derived from a modifier.
- the modified conjugated diene-based polymer according to an embodiment of the present invention may have a modification rate of 30% or more.
- the modified conjugated diene-based polymer may have a modification rate of 50% or more.
- the modification rate may be 30% or more, and the modification rate is N It does not change independently of the content of atoms and Si atoms, and may vary in part.
- the content of N and Si atoms and the rate of modification may exhibit some independence, and the modification rate is 50% or more, preferably 55% or more,
- the modification rate is 50% or more, preferably 55% or more.
- it is necessary to reduce the amount of the polymer coupled in the modification reaction which is the amount of denaturing agent added, the amount of polar additives, the reaction time, the amount of the denaturant and the active polymer It can be controlled according to the mixing time and the mixing degree.
- the modified conjugated diene-based polymer according to the present invention when the modified conjugated diene-based polymer according to the present invention satisfies the above-mentioned conditions, wear resistance and cloud resistance may be greatly improved when blended due to an improved affinity with a filler such as silica or carbon black. In addition to improvements, workability can also be improved. Furthermore, in the case of the modified conjugated diene-based polymer further satisfying the modification rate condition, it may be possible to improve wear resistance and rolling resistance as well as wet road resistance, thereby modifying conjugated diene which can greatly improve tensile and viscoelastic properties. System-based polymers can be provided.
- the modifier according to the present invention may be a modifier for modifying the terminal of the conjugated diene-based polymer, and may be, for example, a silica affinity modifier.
- the silica affinity modifier may mean a modifier containing a silica affinity functional group in a compound used as a modifier, the silica affinity functional group is excellent in affinity with the filler, in particular silica-based filler, It may mean a functional group capable of interaction between the functional group derived from the denaturant.
- the modifier may be, for example, an alkoxy silane modifier, and specifically, may be an alkoxy silane modifier containing one or more hetero atoms such as a nitrogen atom, an oxygen atom, or a sulfur atom.
- modification may be performed in a form in which one end of the active polymer is bonded to the silyl group through a substitution reaction between an anion active site located at one end of the active polymer and an alkoxy group of the alkoxy silane-based modifier.
- the denaturant may be to include a compound represented by the following formula (1).
- R 1 may be a single bond, or an alkylene group having 1 to 10 carbon atoms
- R 2 and R 3 may each independently be an alkyl group having 1 to 10 carbon atoms
- R 4 may be hydrogen or 1 to carbon atoms.
- R 21 is a single bond, an alkylene group having 1 to 10 carbon atoms , Or- [R 42 O] j- , R 42 may be an alkylene group having 1 to 10 carbon atoms, a and m may be each independently an integer selected from 1 to 3, n is 0, 1, Or an integer of 2, j may be an integer selected from 1 to 30.
- R 1 may be a single bond or an alkylene group having 1 to 5 carbon atoms
- R 2 and R 3 may be each independently hydrogen, an alkyl group having 1 to 5 carbon atoms
- R 4 is Hydrogen, a tetravalent alkylsilyl group substituted with an alkyl group having 1 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or a heterocyclic group having 2 to 5 carbon atoms
- R 21 is a single bond or an alkylene group having 1 to 5 carbon atoms
- R 42 may be an alkylene group having 1 to 5 carbon atoms
- a may be an integer of 2 or 3
- m may be an integer selected from 1 to 3
- the heterocyclic group when R 4 is a heterocyclic group, the heterocyclic group may be unsubstituted or substituted with a trisubstituted alkoxy silyl group, when the heterocyclic group is substituted with a trisubstituted alkoxy silyl group, the trisubstituted alkoxy silyl group It may be substituted by being connected to the heterocyclic group by an alkylene group having 1 to 10 carbon atoms, the tri-substituted alkoxy silyl group may mean an alkoxy silyl group substituted with an alkoxy group having 1 to 10 carbon atoms.
- the compound represented by Chemical Formula 1 is N, N-bis (3- (dimethoxy (methyl) silyl) propyl) -methyl-1-amine (N, N-bis (3- (dimethoxy (methyl)) silyl) propyl) -methyl-1-amine), N, N-bis (3- (diethoxy (methyl) silyl) propyl) -methyl-1-amine (N, N-bis (3- (diethoxy (methyl)) silyl) propyl) -methyl-1-amine), N, N-bis (3- (trimethoxysilyl) propyl) -methyl-1-amine (N, N-bis (3- (trimethoxysilyl) propyl) -methyl -1-amine), N, N-bis (3- (triethoxysilyl) propyl) -methyl-1-amine (N, N-bis (3- (triethoxysilyl) propyl) -methyl-1-amine), N, N-diethyl-3- (trimethoxy
- the denaturant may include a compound represented by Formula 2 below.
- R 5 , R 6 and R 9 may be each independently an alkylene group having 1 to 10 carbon atoms
- R 7 , R 8 , R 10 and R 11 are each independently an alkyl group having 1 to 10 carbon atoms.
- R 12 may be hydrogen or an alkyl group having 1 to 10 carbon atoms
- b and c may each independently be 0, 1, 2 or 3
- b + c ⁇ 1 and A may be or
- R 13 , R 14 , R 15 and R 16 may be each independently hydrogen or an alkyl group having 1 to 10 carbon atoms.
- the compound represented by Chemical Formula 2 may be N- (3- (1H-imidazol-1-yl) propyl) -3- (triethoxysilyl) -N- (3- (triethoxysilyl) propyl Propane-1-amine (N- (3- (1H-imidazol-1-yl) propyl) -3- (triethoxysilyl) -N- (3- (triethoxysilyl) propyl) propan-1-amine) and 3- (4 , 5-dihydro-1H-imidazol-1-yl) -N, N-bis (3- (triethoxysilyl) propyl) propan-1-amine (3- (4,5-dihydro-1H-imidazol -1-yl) -N, N-bis (3- (triethoxysilyl) propyl) propan-1-amine) may be one selected from the group consisting of.
- the denaturant may include a compound represented by Formula 3 below.
- a 1 and A 2 may each independently be a divalent hydrocarbon group having 1 to 20 carbon atoms, including or without an oxygen atom, and R 17 to R 20 are each independently monovalent having 1 to 20 carbon atoms. It may be a hydrocarbon group, L 1 to L 4 are each independently a divalent, trivalent or tetravalent alkylsilyl group substituted with an alkyl group having 1 to 10 carbon atoms, or a monovalent hydrocarbon group having 1 to 20 carbon atoms, or L 1 and L 2 and L 3 and L 4 may be linked to each other to form a ring having 1 to 5 carbon atoms, and when L 1 and L 2 and L 3 and L 4 are connected to each other to form a ring, the ring formed may be It may comprise one to three heteroatoms selected from the group consisting of N, O and S.
- a 1 and A 2 may be each independently an alkylene group of 1 to 10
- R 17 to R 20 may be each independently an alkyl group having 1 to 10 carbon atoms
- L 1 to L 4 is independently a tetravalent alkylsilyl group substituted with an alkyl group having 1 to 5 carbon atoms, an alkyl group having 1 to 10 carbon atoms, or L 1 and L 2 and L 3 and L 4 are connected to each other to form a ring having 1 to 3 carbon atoms
- the ring formed may include one or more heteroatoms selected from the group consisting of N, O, and S; It can contain three.
- the compound represented by Formula 3 is 3,3 '-(1,1,3,3-tetramethoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine) (3,3 '-(1,1,3,3-tetramethoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine), 3,3'-(1,1,3,3- Tetraethoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine) (3,3 '-(1,1,3,3-tetraethoxydisiloxane-1,3-diyl) bis ( N, N-dimethylpropan-1-amine), 3,3 '-(1,1,3,3-tetrapropoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine) (3,3 '-(1,1,3,3-t
- the denaturant may include a compound represented by the following Formula 4.
- R 22 and R 23 are each independently an alkylene group having 1 to 20 carbon atoms, or -R 28 [OR 29 ] f-
- R 24 to R 27 are each independently an alkyl group having 1 to 20 carbon atoms or It may be an aryl group having 6 to 20 carbon atoms
- R 28 and R 29 may be each independently an alkylene group having 1 to 20 carbon atoms
- R 47 and R 48 may be each independently a divalent hydrocarbon group having 1 to 6 carbon atoms
- d and e are each independently 0, or an integer selected from 1 to 3
- d + e is an integer of 1 or more
- f may be an integer of 1 to 30.
- R 22 and R 23 may be each independently an alkylene group having 1 to 10 carbon atoms, or -R 28 [OR 29 ] f- , and R 24 to R 27 are each independently 1 It may be an alkyl group of 10 to 10, R 28 and R 29 may be each independently an alkylene group having 1 to 10 carbon atoms, d and e are each independently 0, or an integer selected from 1 to 3, d + e is It may be an integer of 1 or more, f may be an integer selected from 1 to 30.
- the compound represented by Chemical Formula 4 may be a compound represented by Chemical Formula 4a, Chemical Formula 4b, or Chemical Formula 4c.
- R 22 to R 27 , d, and e are as described above.
- the compound represented by Chemical Formula 4 may be selected from 1,4-bis (3- (3- (triethoxysilyl) propoxy) propyl) piperazine (1,4-bis (3- (3- (triethoxysilyl) propoxy) propyl) piperazine, 1,4-bis (3- (triethoxysilyl) propyl) piperazine (1,4-bis (3- (triethoxysilyl) propyl) piperazine), 1,4-bis (3- (Trimethoxysilyl) propyl) piperazine (1,4-bis (3- (trimethoxysilyl) propyl) piperazine), 1,4-bis (3- (dimethoxymethylsilyl) propyl) piperazine (1,4- bis (3- (dimethoxymethylsilyl) propyl) piperazine), 1- (3- (ethoxydimethylsilyl) propyl) -4- (3- (triethoxysilyl) propyl) piperazine (1- (3- (ethoxy
- the denaturant may include a compound represented by the following Formula 5.
- R 30 may be a monovalent hydrocarbon group having 1 to 30 carbon atoms
- R 31 to R 33 may each independently be an alkylene group having 1 to 10 carbon atoms
- R 34 to R 37 may each independently be carbon atoms. It may be an alkyl group of 1 to 10, g and h are each independently 0, or an integer selected from 1 to 3, g + h may be an integer of 1 or more.
- the denaturant may include a compound represented by the following Formula 6.
- a 3 and A 4 may each independently be an alkylene group having 1 to 10
- R 38 to R 41 may be each independently an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms.
- i may be an integer selected from 1 to 30.
- the denaturing agent is 3,4-bis (2-methoxydeoxy) -N- (4- (triethoxysilyl) butyl) aniline (3,4-bis (2-methoxyethoxy) -N- ( 4- (trimethylsilyl) butyl) aniline), N, N-diethyl-3- (7-methyl-3,6,8,11-tetraoxa-7-silatridecan-7-yl) propan-1-amine (N, N-diethyl-3- (7-methyl-3,6,8,11-tetraoxa-7-silatridecan-7-yl) propan-1-amine), 2,4-bis (2-methoxy Methoxy) -6-((trimethylsilyl) methyl) -1,3,5-triazine (2,4-bis (2-methoxyethoxy) -6-((trimethylsilyl) methyl) -1,3,5-triazine) And 3,14-dimethoxy-3,8,8,13-
- the denaturant may include a compound represented by the following Formula 7.
- R 43 , R 45, and R 46 may be each independently an alkyl group having 1 to 10 carbon atoms, R 44 may be an alkylene group having 1 to 10 carbon atoms, and k may be an integer selected from 1 to 4 have.
- the compound represented by Chemical Formula 7 is 8,8-dibutyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13- Disila-8-stanpentadecane (8,8-dibutyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13-disila-8-stannapentadecane), 8,8-dimethyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13-disila-8-stanpentadecane (8,8- dimetyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13-disila-8-stanpentadecane (8,8- dimetyl-3,13-dimethoxy-3
- the present invention provides a method for producing a modified conjugated diene-based polymer in order to produce the modified conjugated diene-based polymer.
- the modified conjugated diene-based polymer manufacturing method comprises the steps of polymerizing a conjugated diene-based monomer in the presence of an organometallic compound in a hydrocarbon solvent to prepare an active polymer to which the organic metal is bonded (S1); And a step (S2) of reacting the active polymer prepared in the step (S1) with the denaturant, and the polymerization reaction (S1) and the modification reaction (S2) may be performed continuously or batchwise.
- the hydrocarbon solvent is not particularly limited, but may be, for example, one or more selected from the group consisting of n-pentane, n-hexane, n-heptane, isooctane, cyclo hexane, toluene, benzene, and xylene.
- the organometallic compound is 0.01 mmol to 10 mmol, 0.05 mmol to 5 mmol, 0.1 mmol to 2 mmol, 0.1 mmol to 1 mmol, or 0.15 to 0.8 mmol based on 100 g of the total monomers
- the organometallic compound include methyllithium, ethyllithium, propyllithium, isopropyllithium, n-butyllithium, s-butyllithium, t-butyllithium, hexyllithium, n-decyllithium, t-octylithium and phenyllithium.
- the polymerization of the step (S1) may be, for example, anionic polymerization, and specifically, may be living anion polymerization having an anion active site at the end of the polymerization by a growth polymerization reaction by anion.
- the polymerization of the step (S1) may be a temperature increase polymerization, isothermal polymerization or constant temperature polymerization (thermal insulation polymerization)
- the constant temperature polymerization may include the step of polymerization by the heat of reaction without the addition of heat after the addition of the organometallic compound optionally
- the temperature polymerization may mean a polymerization method in which the temperature is increased by optionally adding heat after the organometallic compound is added, and the isothermal polymerization is heat after adding the organometallic compound. By adding to increase the heat or take the heat may mean a polymerization method for maintaining a constant temperature of the polymer.
- the polymerization in the step (S1) may be carried out by further comprising a diene-based compound having 1 to 10 carbon atoms in addition to the conjugated diene-based monomer, in this case, gel on the reactor wall surface for a long time operation It is effective to prevent this from being formed.
- the diene compound may be, for example, 1,2-butadiene.
- the polymerization of the step (S1) may be carried out in a temperature range of 100 ° C or less, 50 ° C to 100 ° C, or 50 ° C to 80 ° C, for example, within this range to increase the conversion of the polymerization reaction, While controlling the molecular weight distribution, it is possible to satisfy the glass transition temperature, Mooney viscosity and 1,2-vinyl bond content in the above-described range, there is an excellent effect on improving physical properties.
- the active polymer prepared by the step (S1) may refer to a polymer in which a polymer anion and an organic metal cation are combined.
- the active polymer prepared by the polymerization of the step (S1) may be a random copolymer, in this case, the balance between the physical properties is excellent effect.
- the random copolymer may mean that the repeating units constituting the copolymer are randomly arranged.
- the term 'polymer' is carried out in each reactor during the step (S1), before the step (S1) or (S2) is completed to obtain an active polymer or a modified conjugated diene-based polymer. It can mean an intermediate in the form of the polymer being, and may mean a polymer having a polymerization conversion of less than 90% in which the polymerization is carried out in the reactor.
- the polymerization of the step (S1) may be carried out including a polar additive
- the polar additive may be added in a ratio of 0.001 g to 50 g, or 0.002 g to 0.1 g based on a total of 100 g of the monomer.
- the polar additive may be added in a ratio of more than 0 g to 1 g, 0.01 g to 1 g or 0.1 g to 0.9 g based on a total of 100 g of the organometallic compound.
- the polar additive is, for example, tetrahydrofuran, ditetrahydrofurylpropane, diethyl ether, cyclopentyl ether, dipropyl ether, ethylene methyl ether, ethylene dimethyl ether, diethyl glycol, dimethyl ether, tert-butoxyethoxyethane , Bis (3-dimethylaminoethyl) ether, (dimethylaminoethyl) ethyl ether, trimethylamine, triethylamine, tripropylamine and tetramethylethylenediamine, and may be one or more selected from the group consisting of triethylamine.
- It may be an amine or tetramethylethylenediamine, and when the polar additive is included in the copolymer of conjugated diene-based monomers, or conjugated diene-based monomers and aromatic vinyl-based monomers to facilitate the random copolymer by compensating for the difference in their reaction rate. It is effective to induce it to form.
- the denaturant in the reaction of the step (S2), may be used in an amount of 0.01 mmol to 10 mmol based on a total of 100 g of monomers.
- the denaturant may be used in a molar ratio of 1: 0.1 to 10, 1: 0.1 to 5, or 1: 0.1 to 1: 3, based on 1 mole of the organometallic compound of step (S1).
- the molar ratio of the modifier and the organometallic compound and the amount of the modifier to the monomer may substantially affect the glass transition temperature, the Mooney viscosity and the Mooney relaxation rate of the polymer to be prepared, so select an appropriate ratio within the above range if possible. It is desirable to.
- the denaturant may be added to the modification reactor, the step (S2) may be carried out in the modification reactor.
- the denaturant may be added to the transfer unit for transferring the active polymer prepared in the step (S1) to the modification reactor for performing the step (S2), and the mixture of the active polymer and the modifier in the transfer unit
- the reaction may proceed, wherein the reaction may be a modification reaction in which the denaturant is simply bound to the active polymer, or a coupling reaction in which the active polymer is linked to the modification agent, and the modification reaction and the coupling reaction as described above.
- the ratio of to needs to be controlled, which can affect the Mooney viscosity, Mooney relaxation rate, and glass transition temperature.
- the type and amount of the organometallic compound, the type and amount of the polar additive, the type and amount of the modifier prepared according to the temperature and time of the polymerization reaction and the modification reaction It may affect the glass transition temperature, Mooney viscosity, Mooney relaxation rate, 1,2-vinyl bond content control of the modified conjugated diene-based polymer, and thus the preparation method according to the present invention is presented in the present invention within the above conditions
- the preparation method according to the present invention may be to perform the reaction by appropriately organically controlled with each other.
- a rubber composition comprising the modified conjugated diene-based polymer.
- the rubber composition may include the modified conjugated diene-based polymer in an amount of 10 wt% or more, 10 wt% to 100 wt%, or 20 wt% to 90 wt%, and within this range, tensile strength, wear resistance, and the like. It is excellent in the mechanical properties of and excellent in the balance between each physical property.
- the rubber composition may further include other rubber components as needed in addition to the modified conjugated diene-based polymer, wherein the rubber components may be included in an amount of 90% by weight or less based on the total weight of the rubber composition.
- the other rubber component may be included in an amount of 1 part by weight to 900 parts by weight based on 100 parts by weight of the modified conjugated diene-based polymer.
- the rubber component may be, for example, natural rubber or synthetic rubber, and specific examples include natural rubber (NR) including cis-1,4-polyisoprene; Modified natural rubbers such as epoxidized natural rubber (ENR), deproteinized natural rubber (DPNR), and hydrogenated natural rubber obtained by modifying or refining the general natural rubber; Styrene-butadiene copolymer (SBR), polybutadiene (BR), polyisoprene (IR), butyl rubber (IIR), ethylene-propylene copolymer, polyisobutylene-co-isoprene, neoprene, poly (ethylene-co- Propylene), poly (styrene-co-butadiene), poly (styrene-co-isoprene), poly (styrene-co-isoprene-co-butadiene), poly (isoprene-co-butadiene), poly (ethylene-co-propylene -Co-d
- the rubber composition may include, for example, 0.1 part by weight to 200 parts by weight, or 10 parts by weight to 120 parts by weight of a filler based on 100 parts by weight of the modified conjugated diene polymer of the present invention.
- the filler may be, for example, a silica-based filler, and specific examples may be wet silica (silicate silicate), dry silica (silicate anhydrous), calcium silicate, aluminum silicate, colloidal silica, and the like.
- the wet silica may be the most compatible of the grip (wet grip).
- the rubber composition may further include a carbon-based filler as needed.
- silica when silica is used as the filler, a silane coupling agent for improving reinforcement and low heat generation may be used together.
- the silane coupling agent may include bis (3-triethoxysilylpropyl) tetrasulfide.
- the compounding amount of the silane coupling agent is conventional.
- the silane coupling agent may be used in an amount of 1 part by weight to 20 parts by weight, or 5 parts by weight to 15 parts by weight with respect to 100 parts by weight of silica, and the effect as a coupling agent is within this range. While sufficiently exhibiting, there is an effect of preventing gelation of the rubber component.
- the rubber composition according to an embodiment of the present invention may be sulfur crosslinkable, and may further include a vulcanizing agent.
- the vulcanizing agent may be specifically sulfur powder, and may be included in an amount of 0.1 parts by weight to 10 parts by weight with respect to 100 parts by weight of the rubber component, while ensuring the required elastic modulus and strength of the vulcanized rubber composition within this range and at the same time low fuel efficiency. Excellent effect.
- the rubber composition according to an embodiment of the present invention in addition to the above components, various additives commonly used in the rubber industry, specifically, vulcanization accelerators, process oils, plasticizers, anti-aging agents, anti-scoring agents, zinc white, Stearic acid, a thermosetting resin, or a thermoplastic resin may be further included.
- the vulcanization accelerator is, for example, a thiazole-based compound such as M (2-mercaptobenzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2-benzothiazylsulfenamide), or DPG.
- a thiazole-based compound such as M (2-mercaptobenzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2-benzothiazylsulfenamide), or DPG.
- Guanidine-based compounds such as (diphenylguanidine) may be used, and may be included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the rubber component.
- the process oil acts as a softener in the rubber composition, and may be, for example, a paraffinic, naphthenic, or aromatic compound, and when considering the tensile strength and abrasion resistance, when the aromatic process oil, hysteresis loss and low temperature characteristics are considered.
- Naphthenic or paraffinic process oils may be used.
- the process oil may be included in an amount of 100 parts by weight or less based on 100 parts by weight of the rubber component, and there is an effect of preventing a decrease in tensile strength and low heat generation (low fuel efficiency) of the vulcanized rubber within this range.
- the anti-aging agent is for example N-isopropyl-N'-phenyl-p-phenylenediamine, N- (1,3-dimethylbutyl) -N'-phenyl-p-phenylenediamine, 6-ethoxy-2 , 2,4-trimethyl-1,2-dihydroquinoline, or a high temperature condensate of diphenylamine and acetone, and the like, and may be used in an amount of 0.1 to 6 parts by weight based on 100 parts by weight of the rubber component.
- the rubber composition according to an embodiment of the present invention may be obtained by kneading using a kneading machine such as a Banbury mixer, a roll, an internal mixer, etc. by the formulation, and has low heat resistance and abrasion resistance by a vulcanization process after molding. This excellent rubber composition can be obtained.
- a kneading machine such as a Banbury mixer, a roll, an internal mixer, etc.
- the rubber composition may be used for tire members such as tire treads, under treads, sidewalls, carcass coated rubbers, belt coated rubbers, bead fillers, pancreapers, or bead coated rubbers, dustproof rubbers, belt conveyors, hoses, and the like. It may be useful for the production of various industrial rubber products.
- the present invention provides a tire manufactured using the rubber composition.
- the tire may include a tire or a tire tread.
- the resulting polymer in the second stage reactor was continuously fed to the top of the third stage reactor and 20% by weight of N, N-bis (3- (dimethoxy (methyl) silyl) propyl) -methyl-1-amine as the modifier
- the solution containing 30 weight% of antioxidant (wingstay-K) of the resultant three-phase reactor was added at a rate of 16 g / h to terminate the polymerization reaction, thereby obtaining a polymer.
- the obtained polymer was put in hot water heated with steam, stirred to remove the solvent, and then dried by roll to remove residual solvent and water to prepare a modified conjugated diene-based polymer.
- the analysis results for the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 1 tri (3- (trimethoxysilyl) propyl) amine was used instead of N, N-bis (3- (dimethoxy (methyl) silyl) propyl) -methyl-1-amine as a modifier. Except for producing a modified conjugated diene-based polymer in the same manner as in Example 1. The analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 2 a solution in which tetramethylethylenediamine (TMEDA) was dissolved in n-hexane at 10% by weight instead of ditetrahydrofurylpropane as a polar additive was supplied at 1 g / hr, and the temperature inside the reactor was changed to 1 g / hr.
- TEDA tetramethylethylenediamine
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 2, except that it was adjusted to 75 ° C.
- Table 1 The analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 3 N- (3- (1H-imidazol-1-yl) propyl) -3- (triethoxysilyl)-in place of tri (3- (trimethoxysilyl) propyl) amine as a modifier
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 3, except that N- (3- (trimethoxysilyl) propylpropan-1-amine was used.
- the analytical results are shown in Table 1 below.
- Example 3 3,3 '-(1,1,3,3-tetramethoxydisiloxane-1,3-diyl) bis (instead of tri (3- (trimethoxysilyl) propyl) amine as a modifier, A modified conjugated diene-based polymer was prepared in the same manner as in Example 3, except that N, N-dimethylpropan-1-amine) was used. The analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 3 except that 1,4-bis (3- (trimethoxysilyl) propyl) piperazine was used instead of tri (3- (trimethoxysilyl) propyl) amine prepared as a modifier.
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 3. The analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 3 1,1,3,3-tetramethoxy-1,3-bis (3- (4-methylpiperazin-) instead of tri (3- (trimethoxysilyl) propyl) amine as a modifier
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 3, except that 1-yl) propyl) disiloxane was used.
- the analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 1 a modified conjugate was prepared in the same manner as in Example 1, except that ditetrahydrofurylpropane was dissolved in 10% by weight of n-hexane as a polar additive at 2 g / hr.
- the diene polymer was prepared.
- the analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 1 the modified conjugated diene-based polymer in the same manner as in Example 1 except that the initiator solution in which n-butyllithium was dissolved in 10% by weight in n-hexane was continuously added at 7.2 g / hr. was prepared.
- the analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 1 the polarity in which the initiator solution in which n-butyllithium was dissolved in 10% by weight in n-hexane was 4.7 g / hr and the polar additive in which ditetrahydrofurylpropane was dissolved in 10% by weight in n-hexane.
- the additive solution was continuously added at 0.4 g / hr, and N, N-diethyl-3- instead of N, N-bis (3- (dimethoxy (methyl) silyl) propyl) -methyl-1-amine as a modifier.
- styrene 180 g of styrene, 760 g of 1,3-butadiene, 5000 g of n-hexane, and 3.0 g of tetramethylethylenediamine (TMEDA) were added to a 20 L autoclave reactor, and the temperature inside the reactor was raised to 70 ° C.
- TMEDA tetramethylethylenediamine
- 0.6 g of n-butyllithium was added as a polymerization initiator to proceed the adiabatic heating reaction, and the temperature inside the reactor was raised to 90 ° C by exothermic heat of the polymer.
- the resulting polymer was placed in hot water heated with steam, stirred to remove the solvent, and then dried in rolls to remove residual solvent and water to prepare a modified conjugated diene-based polymer.
- the analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- the glass transition temperature, 1,2-vinyl bond content, weight average molecular weight (Mw, X10 3 g / mol), number average in the polymer, respectively Molecular weight (Mn, X10 3 g / mol), molecular weight distribution (PDI, MWD), Mooney viscosity (MV), Mooney relaxation rate (-S / R) and the content of N and Si atoms were measured, respectively. 1 is shown.
- a modified conjugated diene-based polymer was used as a sample, and a differential scanning calorimeter (trade name "DSC3200S” manufactured by McScience Inc.) was used in accordance with ISO 22768: 2006, and was flowed from -100 ° C to 10 ° C under a circulation of 50 mL / min of helium.
- the DSC curve was recorded while the temperature was raised at / min, and the peak top (Inflection point) of the DSC differential curve was defined as the glass transition temperature.
- the vinyl content in each polymer was measured and analyzed using Varian VNMRS 500 MHz NMR.
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) were measured by gel permeation chromatohraph (GPC) analysis, and the molecular weight distribution (PDI, MWD, Mw / Mn) was calculated from the respective measured molecular weights.
- GPC gel permeation chromatohraph
- the GPC is used by combining two PLgel Olexis (Polymer Laboratories) columns and one PLgel mixed-C (Polymer Laboratories) columns, and the GPC standard material is PS (polystyrene) when calculating the molecular weight. It was carried out using.
- GPC measurement solvent was prepared by mixing 2 wt% of an amine compound with tetrahydrofuran.
- the Mooney viscosity (MV, (ML1 + 4, @ 100 °C MU) was measured using a Rotor Speed 2 ⁇ 0.02 rpm, Large Rotor at 100 °C using MV-2000 (ALPHA Technologies, Inc.), the sample used was measured at room temperature (at 23 ⁇ 3 °C for more than 30 minutes, and then collected 27 ⁇ 3 g, filled inside the die cavity, and operated for 4 minutes by platen operation.
- the Mooney relaxation rate was obtained by measuring the slope value of.
- the Si content was measured using an inductively coupled plasma luminescence analyzer (ICP-OES; Optima 7300DV) as an ICP analysis method.
- ICP-OES inductively coupled plasma luminescence analyzer
- about 0.7 g of the sample was placed in a platinum crucible (Pt crucible), about 1 mL of concentrated sulfuric acid (98 wt%, Electronic grade) was heated at 300 ° C. for 3 hours, and the sample was After the conversation in the electric furnace (Thermo Scientific, Lindberg Blue M) in the program of steps 1 to 3,
- step 1 initial temp 0 °C, rate (temp / hr) 180 °C / hr, temp (holdtime) 180 °C (1hr)
- step 2 initial temp 180 °C, rate (temp / hr) 85 °C / hr, temp (holdtime) 370 °C (2hr)
- step 3 initial temp 370 °C, rate (temp / hr) 47 °C / hr, temp (holdtime) 510 °C (3hr)
- the nitrogen atom content was set to a carrier gas flow rate at 250 ml / min for Ar, 350 ml / min for O 2 and 300 ml / min for ozonizer by turning on a trace nitrogen quantitative analyzer (Auto sampler, Horizontal furnace, PMT & Nitrogen detector). After setting the heater to 800 ° C., the analyzer was stabilized by waiting for about 3 hours. After the analyzer was stabilized, a calibration curve with 5 ppm, 10 ppm, 50 ppm, 100 ppm and 500 ppm ranges was prepared using the Nitrogen standard (AccuStandard S-22750-01-5 ml) to obtain an area corresponding to each concentration. A straight line was then created using the ratio of concentration to area. Thereafter, a ceramic boat containing 20 mg of the sample was placed in an auto sampler of the analyzer and measured to obtain an area. The N content was calculated using the area of the obtained sample and the calibration curve.
- a trace nitrogen quantitative analyzer Auto sampler, Horizontal furnace, PMT
- Each modified conjugated diene-based polymer of Examples and Comparative Examples was blended under the blending conditions shown in Table 3 below as a raw material rubber.
- the raw materials in Table 3 are each parts by weight based on 100 parts by weight of the raw rubber.
- the rubber specimen is kneaded through the first stage kneading and the second stage kneading.
- a half-barrier mixer equipped with a temperature control device is used to prepare raw rubber, silica (filler), organosilane coupling agent (X50S, Evonik), process oil (TDAE oil), galvanizing agent (ZnO) and stearic acid.
- TMQ Antioxidant
- RD (2,2,4-trimethyl-1,2-dihydroquinoline polymer)
- antioxidant (6PPD ((dimethylbutyl) -N-phenyl-phenylenediamine)
- wax Merocrystaline Wax
- the primary blend, sulfur, rubber accelerator (DPD (diphenylguanine)) and vulcanization accelerator (CZ (N-cyclohexyl-2-benzothiazylsulfenamide)) were added to the kneader, and the temperature was 100 ° C. or lower.
- the second blend was obtained by mixing in. Then, rubber specimens were prepared through a curing process at 160 ° C. for 20 minutes.
- Tensile properties were prepared in accordance with the tensile test method of ASTM 412 and measured the tensile strength at the cutting of the test piece and the tensile stress at 300% elongation (300% modulus). Specifically, the tensile properties were measured at a rate of 50 cm / min at room temperature using a Universal Test Machin 4204 (Instron) tensile tester.
- Viscoelastic properties were determined by measuring the viscoelastic behavior for dynamic deformation at 10 Hz frequency and each measurement temperature (-60 °C ⁇ 60 °C) in the film tension mode using a dynamic mechanical analyzer (GABO).
- GBO dynamic mechanical analyzer
- each secondary blend was left at room temperature (23 ⁇ 3 °C) for 30 minutes or more 27 ⁇ 3 g was taken and filled into the die cavity and platen operated for 4 minutes.
- DIN abrasion test was conducted according to ASTM D5963 and expressed as DIN wt loss index (loss volume index: ARIA (Abration resistance index, Method A). Indicates.
- Examples 1 to 8 according to an embodiment of the present invention was confirmed to improve all the tensile properties, viscoelastic properties, wear resistance and workability compared to Comparative Examples 1 to 4.
- Comparative Example 1 has viscoelastic properties, wear resistance and workability
- Comparative Example 2 has tensile strength and wear resistance
- Comparative Example 3 has workability
- Comparative Example 4 has high wear resistance and workability. Degraded.
- Comparative Example 1 is the glass transition temperature and 1,2-vinyl bond content of the polymer is out of the range suggested by the present invention
- Comparative Examples 2 and 3 have a Mooney viscosity and Mooney relaxation rate
- Comparative Examples 4 Mooney relaxation rate was outside the range suggested by the present invention.
- the modified conjugated diene-based polymer of the present invention has a glass transition temperature, 1,2-vinyl bond content adjusted to a specific range and at the same time have a Mooney viscosity and a Mooney relaxation rate adjusted to a specific range tensile properties, It means that the viscoelastic properties and wear resistance can be excellent while at the same time significantly improved the workability.
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Abstract
Description
Claims (12)
- 하기 i) 내지 v)의 조건을 충족하는 변성 공액디엔계 중합체:i) 유리전이온도: -90℃ 내지 -50℃,ii) ASTM D1646 조건에서 측정한 무니 점도: 50 내지 100,iii) 중합체 총 중량 대비 1,2-비닐 결합 함량: 30.0 중량% 이하,iv) 분자량 분포(PDI; MWD): 1.5 내지 3.5, 그리고v) 110℃에서 측정되는 무니 완화율: 0.7 이하.
- 제1항에 있어서,유리전이온도가 -80℃ 내지 -50℃인 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,ASTM D1646 조건에서 측정한 무니 점도가 70 내지 100인 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,중합체 내 1,2-비닐 결합 함량이 5 중량% 내지 30 중량%인 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,분자량 분포가 1.7 내지 2.6인 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,110℃에서 측정되는 무늬 완화율이 0.45 이하인 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 변성 공액디엔계 중합체는 수평균 분자량(Mn)이 1,000 g/mol 내지 2,000,000 g/mol이고, 중량평균 분자량(Mw)이 1,000 g/mol 내지 3,000,000 g/mol인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 변성 공액디엔계 중합체는 N 원자를 가지며, 상기 N 원자의 함유량이 상기 중합체 총 중량에 대하여 50ppm 이상인 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 변성 공액디엔계 중합체는 Si 원자를 가지며, 상기 Si 원자의 함유량이 상기 중합체 총 중량에 대하여 50ppm 이상인 것인 변성 공액디엔계 중합체.
- 제1항에 따른 변성 공액디엔계 중합체 및 충진제를 포함하는 고무 조성물.
- 제10항에 있어서,상기 고무 조성물은 상기 변성 공액디엔계 중합체 100 중량부에 대하여, 0.1 중량부 내지 200 중량부의 충진제를 포함하는 것인 고무 조성물.
- 제10항에 있어서,상기 충진제는 실리카계 충진제 또는 카본블랙계 충진제인 고무 조성물.
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EP19835021.7A EP3705502B1 (en) | 2018-07-11 | 2019-07-11 | Modified conjugated diene-based polymer and rubber composition comprising same |
RU2020120560A RU2762063C1 (ru) | 2018-07-11 | 2019-07-11 | Модифицированный полимер на основе сопряженного диена и каучуковая композиция, содержащая его |
BR112020012802-3A BR112020012802B1 (pt) | 2018-07-11 | 2019-07-11 | Polímero à base de dieno conjugado modificado e composição de borracha que inclui o mesmo |
JP2020530525A JP7004818B2 (ja) | 2018-07-11 | 2019-07-11 | 変性共役ジエン系重合体およびそれを含むゴム組成物 |
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CN (1) | CN111433234B (ko) |
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KR20230145924A (ko) | 2022-04-11 | 2023-10-18 | 아사히 가세이 가부시키가이샤 | 변성 공액 디엔계 중합체 및 변성 공액 디엔계 중합체의 제조 방법, 그리고 변성 공액 디엔계 중합체 조성물 및 고무 조성물 |
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WO2021149982A1 (ko) * | 2020-01-20 | 2021-07-29 | 주식회사 엘지화학 | 변성 공액디엔계 중합체, 이의 제조방법 및 이를 포함하는 고무 조성물 |
US10968041B1 (en) * | 2020-06-19 | 2021-04-06 | Contitech Transportbandsysteme Gmbh | High cut/gouge and abrasion resistance conveyor belt cover |
US20230038987A1 (en) * | 2020-11-16 | 2023-02-09 | Lg Chem, Ltd. | Modified Conjugated Diene-Based Polymer and Rubber Composition Comprising the Same |
KR20220066817A (ko) * | 2020-11-16 | 2022-05-24 | 주식회사 엘지화학 | 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 |
US20230146440A1 (en) * | 2020-11-16 | 2023-05-11 | Lg Chem, Ltd. | Oil-Extended Conjugated Diene-Based Polymer and Rubber Composition Comprising the Same |
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- 2019-07-11 WO PCT/KR2019/008584 patent/WO2020013638A1/ko unknown
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TW202005997A (zh) | 2020-02-01 |
EP3705502A1 (en) | 2020-09-09 |
KR102035177B1 (ko) | 2019-11-08 |
US10995163B2 (en) | 2021-05-04 |
RU2762063C1 (ru) | 2021-12-15 |
CN111433234A (zh) | 2020-07-17 |
CN111433234B (zh) | 2021-05-11 |
JP7004818B2 (ja) | 2022-01-21 |
EP3705502A4 (en) | 2020-11-25 |
EP3705502B1 (en) | 2023-05-17 |
US20210009722A1 (en) | 2021-01-14 |
JP2021505717A (ja) | 2021-02-18 |
BR112020012802A2 (pt) | 2020-11-24 |
TWI753275B (zh) | 2022-01-21 |
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