CN115043868A - Five-membered cyclic aminosilane external electron donor, preparation method and application thereof - Google Patents
Five-membered cyclic aminosilane external electron donor, preparation method and application thereof Download PDFInfo
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- CN115043868A CN115043868A CN202110256569.4A CN202110256569A CN115043868A CN 115043868 A CN115043868 A CN 115043868A CN 202110256569 A CN202110256569 A CN 202110256569A CN 115043868 A CN115043868 A CN 115043868A
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- China
- Prior art keywords
- electron donor
- compound
- external electron
- titanium
- phthalate
- Prior art date
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- 125000004122 cyclic group Chemical group 0.000 title claims abstract description 39
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 22
- 150000001336 alkenes Chemical class 0.000 claims abstract description 16
- 125000003118 aryl group Chemical group 0.000 claims abstract description 15
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 9
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 6
- 150000002367 halogens Chemical class 0.000 claims abstract description 6
- 239000001257 hydrogen Substances 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- 150000002431 hydrogen Chemical group 0.000 claims abstract description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 3
- 239000000460 chlorine Substances 0.000 claims abstract description 3
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 70
- -1 2, 6-dimethylphenyl Chemical group 0.000 claims description 46
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 claims description 24
- 229920001155 polypropylene Polymers 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims description 22
- MGWAVDBGNNKXQV-UHFFFAOYSA-N diisobutyl phthalate Chemical compound CC(C)COC(=O)C1=CC=CC=C1C(=O)OCC(C)C MGWAVDBGNNKXQV-UHFFFAOYSA-N 0.000 claims description 18
- 239000011777 magnesium Substances 0.000 claims description 18
- 229910052749 magnesium Inorganic materials 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 150000003609 titanium compounds Chemical class 0.000 claims description 15
- 229920000098 polyolefin Polymers 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 12
- 239000002612 dispersion medium Substances 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims description 11
- MQHNKCZKNAJROC-UHFFFAOYSA-N dipropyl phthalate Chemical compound CCCOC(=O)C1=CC=CC=C1C(=O)OCCC MQHNKCZKNAJROC-UHFFFAOYSA-N 0.000 claims description 10
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical group [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 7
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 7
- 239000002685 polymerization catalyst Substances 0.000 claims description 6
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 5
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 5
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 5
- DIOQZVSQGTUSAI-UHFFFAOYSA-N n-butylhexane Natural products CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 claims description 5
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 5
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 5
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 4
- 150000002681 magnesium compounds Chemical class 0.000 claims description 4
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 4
- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium ethoxide Chemical compound [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 claims description 4
- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical compound CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 claims description 4
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 2
- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 150000002680 magnesium Chemical class 0.000 claims description 2
- ITNVWQNWHXEMNS-UHFFFAOYSA-N methanolate;titanium(4+) Chemical compound [Ti+4].[O-]C.[O-]C.[O-]C.[O-]C ITNVWQNWHXEMNS-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- HKJYVRJHDIPMQB-UHFFFAOYSA-N propan-1-olate;titanium(4+) Chemical compound CCCO[Ti](OCCC)(OCCC)OCCC HKJYVRJHDIPMQB-UHFFFAOYSA-N 0.000 claims description 2
- 239000004711 α-olefin Substances 0.000 claims description 2
- 229920006317 cationic polymer Polymers 0.000 claims 1
- DIOQZVSQGTUSAI-NJFSPNSNSA-N decane Chemical compound CCCCCCCCC[14CH3] DIOQZVSQGTUSAI-NJFSPNSNSA-N 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 abstract description 11
- 230000037048 polymerization activity Effects 0.000 abstract description 4
- 238000007086 side reaction Methods 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 23
- 238000012512 characterization method Methods 0.000 description 18
- 229940126062 Compound A Drugs 0.000 description 14
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 11
- 125000004432 carbon atom Chemical group C* 0.000 description 11
- 238000003786 synthesis reaction Methods 0.000 description 11
- 239000002994 raw material Substances 0.000 description 10
- MFIGJRRHGZYPDD-UHFFFAOYSA-N n,n'-di(propan-2-yl)ethane-1,2-diamine Chemical compound CC(C)NCCNC(C)C MFIGJRRHGZYPDD-UHFFFAOYSA-N 0.000 description 8
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 125000003003 spiro group Chemical group 0.000 description 7
- 150000002430 hydrocarbons Chemical group 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- 125000002619 bicyclic group Chemical group 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 125000002950 monocyclic group Chemical group 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- 150000005840 aryl radicals Chemical class 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- 150000001924 cycloalkanes Chemical class 0.000 description 2
- VHPUZTHRFWIGAW-UHFFFAOYSA-N dimethoxy-di(propan-2-yl)silane Chemical compound CO[Si](OC)(C(C)C)C(C)C VHPUZTHRFWIGAW-UHFFFAOYSA-N 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
- 125000006376 (C3-C10) cycloalkyl group Chemical group 0.000 description 1
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 description 1
- 125000005918 1,2-dimethylbutyl group Chemical group 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- 125000006218 1-ethylbutyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Natural products C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- SXAMGRAIZSSWIH-UHFFFAOYSA-N 2-[3-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,2,4-oxadiazol-5-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NOC(=N1)CC(=O)N1CC2=C(CC1)NN=N2 SXAMGRAIZSSWIH-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2 ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 0.000 description 1
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- 125000006176 2-ethylbutyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(C([H])([H])*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004493 2-methylbut-1-yl group Chemical group CC(C*)CC 0.000 description 1
- 125000003542 3-methylbutan-2-yl group Chemical group [H]C([H])([H])C([H])(*)C([H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000005917 3-methylpentyl group Chemical group 0.000 description 1
- CONKBQPVFMXDOV-QHCPKHFHSA-N 6-[(5S)-5-[[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]methyl]-2-oxo-1,3-oxazolidin-3-yl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C[C@H]1CN(C(O1)=O)C1=CC2=C(NC(O2)=O)C=C1 CONKBQPVFMXDOV-QHCPKHFHSA-N 0.000 description 1
- 125000005915 C6-C14 aryl group Chemical group 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 125000005234 alkyl aluminium group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000012662 bulk polymerization Methods 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
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- JNGZXGGOCLZBFB-IVCQMTBJSA-N compound E Chemical compound N([C@@H](C)C(=O)N[C@@H]1C(N(C)C2=CC=CC=C2C(C=2C=CC=CC=2)=N1)=O)C(=O)CC1=CC(F)=CC(F)=C1 JNGZXGGOCLZBFB-IVCQMTBJSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- SJJCABYOVIHNPZ-UHFFFAOYSA-N cyclohexyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C1CCCCC1 SJJCABYOVIHNPZ-UHFFFAOYSA-N 0.000 description 1
- 125000006547 cyclononyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 125000004855 decalinyl group Chemical group C1(CCCC2CCCCC12)* 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JWCYDYZLEAQGJJ-UHFFFAOYSA-N dicyclopentyl(dimethoxy)silane Chemical compound C1CCCC1[Si](OC)(OC)C1CCCC1 JWCYDYZLEAQGJJ-UHFFFAOYSA-N 0.000 description 1
- 125000005046 dihydronaphthyl group Chemical group 0.000 description 1
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000012685 gas phase polymerization Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003392 indanyl group Chemical group C1(CCC2=CC=CC=C12)* 0.000 description 1
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 125000002757 morpholinyl group Chemical group 0.000 description 1
- BNOBHEKBXWEIOI-UHFFFAOYSA-N n'-(2,6-dimethylphenyl)ethane-1,2-diamine Chemical compound CC1=CC=CC(C)=C1NCCN BNOBHEKBXWEIOI-UHFFFAOYSA-N 0.000 description 1
- RMYSCTGPXWFHPC-UHFFFAOYSA-N n'-[2,6-di(propan-2-yl)phenyl]ethane-1,2-diamine Chemical compound CC(C)C1=CC=CC(C(C)C)=C1NCCN RMYSCTGPXWFHPC-UHFFFAOYSA-N 0.000 description 1
- JMRWVHXGVONXEZ-UHFFFAOYSA-N n,n'-dicyclohexylethane-1,2-diamine Chemical compound C1CCCCC1NCCNC1CCCCC1 JMRWVHXGVONXEZ-UHFFFAOYSA-N 0.000 description 1
- LOZMWNGDZJWPDR-UHFFFAOYSA-N n,n'-dicyclopentylethane-1,2-diamine Chemical compound C1CCCC1NCCNC1CCCC1 LOZMWNGDZJWPDR-UHFFFAOYSA-N 0.000 description 1
- NOUUUQMKVOUUNR-UHFFFAOYSA-N n,n'-diphenylethane-1,2-diamine Chemical compound C=1C=CC=CC=1NCCNC1=CC=CC=C1 NOUUUQMKVOUUNR-UHFFFAOYSA-N 0.000 description 1
- KGHYGBGIWLNFAV-UHFFFAOYSA-N n,n'-ditert-butylethane-1,2-diamine Chemical compound CC(C)(C)NCCNC(C)(C)C KGHYGBGIWLNFAV-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 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
- 239000012074 organic phase Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000001105 regulatory 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
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000005329 tetralinyl group Chemical group C1(CCCC2=CC=CC=C12)* 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/10—Compounds having one or more C—Si linkages containing nitrogen having a Si-N linkage
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- 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
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- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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Abstract
The five-membered cyclic aminosilane external electron donor provided by the invention has a structural formula shown as the following formula I:
wherein R is 1 And R 2 Same or different, each independently selected from substituted or unsubstituted C 1 ‑C 10 Alkyl, or substituted or unsubstituted C 6 ‑C 20 Aryl, or substituted or unsubstituted C 3 ‑C 40 A cycloalkyl group; r 3 、R 4 、R 5 And R 6 The same or different, each independently is hydrogen, halogen, C 1 ‑C 10 Alkyl or substituted or unsubstituted C 6 ‑C 20 An aryl group; the halogen is preferably chlorine or bromine. The preparation method of the five-membered cyclic oxysilane external electron donor is simple, the side reaction is less, the product is easy to separate, and meanwhile, the novel external electron donor can improve the polymerization activity and the directional polymerization capability and particularly shows excellent comprehensive performance in olefin polymerization.
Description
Technical Field
The invention belongs to the field of olefin polymerization catalysts, relates to synthesis and application of an external electron donor of an olefin polymerization catalyst, and particularly relates to an aminosilane type external electron donor with a five-membered ring structure, and a preparation method and application thereof.
Background
The polyolefin has the advantages of rich raw materials, low price, easy processing, excellent comprehensive performance and the like, is the polymer material with the largest output and the most extensive application at present, and particularly takes polyethylene and polypropylene as the most important materials. With the increasing global demand for polyolefin materials, there is a demand for polyolefin materials of specific structures, types and functions. The most important factor affecting the structure and performance of polyolefin is the catalyst, and the electron donor is the key factor for regulating and controlling the catalytic performance of polyolefin.
Ziegler-Natta (Ziegler-Natta) catalysts are currently the most important catalysts for the industrial production of polyolefins having a high stereotacticity. In the 80 s of the 20 th century, the tri-well and the Mongolian company used diphenyldimethoxysilane as an external electron donor in the propylene polymerization process, which not only improved the productivity of the catalyst to 1000Kg/(g h), but also greatly improved the isotacticity and bulk density of the polypropylene produced thereby. Since then, silane-based external electron donors have become one of the hot spots in the field of polyolefin research. Researches prove that the selection of the organosilane compound serving as the external electron donor has very important adjusting effect on various properties (such as isotacticity, relative molecular mass and distribution, mechanical property and the like) of the polyolefin and the activity of the catalyst. With MgCl 2 Supported TiCl 4 A catalytic system which is composed of a main catalyst, alkylaluminium as a cocatalyst, a diester compound as an internal electron donor and alkoxy silane as an external electron donor is the Ziegler-Natt which is the most widely applied at presenta one of the catalytic systems. The internal electron donor refers to an electron donor previously added in the preparation process of the solid catalyst, and the external electron donor is an electron donor added in the polymerization process using the catalyst. The external electron donor and the internal electron donor are used in a matching way, so that the efficient stereo-adjustment effect on the polyolefin is hopeful to be obtained.
Since phenylalkoxysilanes contain phenyl functional groups harmful to the human body, cycloalkylalkoxysilanes (e.g., methylcyclohexyldimethoxysilane, dicyclopentyldimethoxysilane, diisopropyldimethoxysilane, etc.) have been increasingly used instead of the phenylalkoxysilanes as external electron donors commonly used for olefin polymerization. However, the preparation of cycloalkylalkoxysilanes is difficult. In order to obtain a silane external electron donor having a high catalytic activity at a low cost, development of a silane external electron donor containing a heteroatom such as N, S, O and having a structure such as thienyl, morpholinyl, piperidinyl, piperazine and the like has attracted much attention.
Disclosure of Invention
The invention provides an external electron donor for olefin polymerization, namely a five-membered cyclic aminosilane external electron donor; and provides a synthesis and application method of the external electron donor.
The five-membered cyclic aminosilane external electron donor provided by the invention has a structural formula shown as the following formula I:
wherein R is 1 And R 2 Same or different, each independently selected from substituted or unsubstituted C 1 -C 10 Alkyl, or substituted or unsubstituted C 6 -C 20 Aryl, or substituted or unsubstituted C 3 -C 40 A cycloalkyl group;
R 3 、R 4 、R 5 and R 6 The same or different, each independently hydrogen, halogen, C 1 -C 10 Alkyl or substituted or unsubstituted C 6 -C 20 An aryl group; the halogen is preferably chlorine or bromine.
Preferably, R 1 And R 2 Identical or different, each independently selected from substituted or unsubstituted C 1 -C 6 Alkyl, or substituted or unsubstituted C 6 -C 14 Aryl, or substituted or unsubstituted C 3 -C 10 A cycloalkyl group; for example, R 1 And R 2 Preferably, the compound is one selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopentyl, cyclohexyl, adamantyl, benzyl, phenyl, 2, 6-dimethylphenyl, 2, 6-diethylphenyl, 2, 6-diisopropylphenyl, and 2,4, 6-trimethylphenyl.
R 3 、R 4 、R 5 And R 6 Preferably independently H.
According to an embodiment of the present invention, the five-membered cyclic aminosilane external electron donor is preferably selected from the following structures:
according to an embodiment of the present invention, the five-membered cyclic aminosilane external electron donor is more preferably selected from formula F, formula G, formula H.
The invention also provides a preparation method of the five-membered cyclic aminosilane external electron donor, which comprises the following steps:
uniformly mixing a solution of an ethylenediamine compound shown in a structural formula II with a n-butyllithium solution, heating for the first time, adding tetraethyl silicate, and heating for the second time to prepare a five-membered cyclic aminosilane external electron donor;
R 1 -NH-CR 3 R 5 -CR 4 R 6 -NH-R 2 formula II;
wherein R is 1 、R 2 、R 3 、R 4 、R 5 And R 6 Has the meaning as above.
According to an embodiment of the invention, R 5 And R 6 All H are taken as examples, and the synthetic route of the external electron donor is as follows:
wherein the first heating temperature is 15-30 deg.C, and the heating time is 0.5-5h, preferably 1 h.
Preferably, the temperature of the second heating is 15-30 ℃, and the heating time is 0.5-48h, preferably 24 h.
According to an embodiment of the present invention, the molar ratio of ethylenediamine compound, n-butyllithium and tetramethyl silicate is 1 (2.0-2.4) to (0.9-1.2), more preferably 1 (2.0-2.2) to (1.0-1.2).
According to an embodiment of the invention, the n-butyllithium solution and the tetramethyl silicate are both added at-60 to-90 ℃, preferably-80 ℃.
According to an embodiment of the present invention, the solution of the ethylenediamine-based compound may be a tetrahydrofuran solution of the ethylenediamine-based compound. Preferably, the concentration of the solution of the ethylenediamine-based compound is 0.5-1.5mol/L, and preferably 1 mol/L.
According to an embodiment of the invention, the n-butyllithium is added dropwise, the concentration of the n-butyllithium solution being 0.5 to 2mol/L, preferably 1.6 mol/L.
According to an embodiment of the present invention, after the heating is completed, post-treatment processes such as extraction, washing, column chromatography separation or distillation are also included.
According to an embodiment of the present invention, the preparation of the five-membered cyclic aminosilane external electron donor is carried out in an inert gas atmosphere, such as nitrogen, argon.
Preferably, the compound of the structural formula II is ethylenediamine, and the preferable synthesis steps of the five-membered cyclic aminosilane external electron donor are as follows: adding 100mL of dried tetrahydrofuran and a raw material ethylenediamine into a 500mL three-neck flask under the protection of nitrogen, and cooling to-80 ℃; then dropwise adding n-butyllithium solution; reacting for 30 minutes, and then slowly heating to room temperature for reacting for one hour; finally cooling to-80 deg.c, adding tetramethyl silicate, raising the temperature slowly to room temperature and reacting overnight. The target product is obtained by extraction, washing, column chromatography purification or distillation purification.
The invention also provides application of the five-membered cyclic aminosilane external electron donor, which is applied to a catalyst system, preferably an olefin polymerization catalyst system.
According to an embodiment of the invention, the catalyst system comprises the following components:
a solid component comprising titanium, magnesium, and an internal electron donor compound;
an organoaluminum compound; and
an external electron donor is added to the reaction mixture,
wherein the external electron donor is the five-membered cyclic aminosilane external electron donor disclosed by the invention.
According to an embodiment of the present invention, the molar ratio of the external electron donor to the titanium element in the solid component may be 2 to 50, preferably 5 to 30.
In the solid component, the molar ratio of the titanium element, the magnesium element and the internal electron donor compound can be 1: 1-50: 0.1 to 1.5, preferably 1: 5-40: 0.2-1.2, more preferably 1: 10-30: 0.5-1.
According to an embodiment of the present invention, the Al/Ti molar ratio of the aluminum element in the organoaluminum compound to the titanium element in the solid component may be 10 to 1000, preferably 40 to 800. The organoaluminum compound is preferably trialkylaluminum, more preferably triethylaluminum and/or triisobutylaluminum.
According to an embodiment of the present invention, in the solid component, magnesium is provided in the form of a magnesium-containing carrier, and titanium and the internal electron donor compound are supported on the magnesium-containing carrier. The magnesium-containing carrier is preferably magnesium chloride.
In the solid component, the internal electron donor compound is preferably a phthalate type internal electron donor compound, more preferably a phthalate type dialkyl ester internal electron donor compound (the alkyl group is preferably a C1-C6 alkyl group), and still more preferably one or more of diisobutyl phthalate, di-n-butyl phthalate, and di-n-propyl phthalate.
The solid component can be prepared by a conventional method, but the present invention is not particularly limited thereto, and for example, the solid component can be prepared by a method disclosed in chinese patent application 00109216.2, 02122750.0, 02136543.1, 200310101833.9, 200410017269.7, 87101423.8, 90104123.8, 93102795.0, 94102813.5, 94103454.2, or 97112005.6.
According to an embodiment of the present invention, the method for preparing the solid component comprises: dispersing a magnesium compound in a dispersion medium to obtain a magnesium-containing dispersion medium; carrying out first contact on the magnesium-containing dispersion medium, a first titanium compound and a first internal electron donor compound to obtain a first contact dispersion liquid; and carrying out second contact on the first contact dispersion liquid, a second titanium compound and a second internal electron donor compound to obtain a second contact dispersion liquid, and removing a dispersion medium in the second contact dispersion liquid to obtain the solid component.
According to an embodiment of the invention, the magnesium-containing compound is preferably magnesium chloride.
According to an embodiment of the invention, the dispersion medium is preferably C 5 -C 12 Of alkanol and/or C 6 -C 12 More preferably isooctanol and/or decane. Preferably, the mass ratio of the alkanol to the alkane may be 1: 0.5-2, preferably 1: 0.8-1.5. The weight ratio of the magnesium compound to the dispersion medium may be 1: 5-20.
According to an embodiment of the present invention, the first titanium compound is preferably a titanate, which may include but is not limited to: tetramethyl titanate, tetraethyl titanate, tetrapropyl titanate and tetrabutyl titanate. Preferably, the first titanium compound is tetrabutyl titanate.
According to an embodiment of the present invention, the first internal electron donor compound is preferably a phthalate type internal electron donor compound, more preferably a phthalate type internal electron donor compound (the alkyl group is preferably C) 1 -C 6 Alkyl group of (b) is more preferably one or both of diisobutyl phthalate, di-n-butyl phthalate and di-n-propyl phthalateAnd (4) performing the steps.
According to an embodiment of the present invention, the first contacting is preferably at a temperature of 100-.
According to an embodiment of the present invention, the second titanium compound is preferably an inorganic titanium compound, more preferably a titanium tetrahalide, and further preferably titanium tetrachloride.
The second internal electron donor compound is preferably a phthalate type internal electron donor compound, and more preferably a phthalate type dialkyl ester internal electron donor compound (the alkyl group is preferably C) 1 -C 6 The alkyl group of (b) is more preferably one or two or more of diisobutyl phthalate, di-n-butyl phthalate and di-n-propyl phthalate. The first internal electron donor compound and the second internal electron donor compound may be the same or different, preferably the same.
The second contact may be performed at a temperature of 100-130 deg.c and the duration of the second contact may be 1-5 hours.
According to an embodiment of the present invention, the molar ratio of the first titanium compound to the second titanium compound may be 1: 80-320. The molar ratio of the first internal electron donor compound to the second internal electron donor compound may be 1: 0.2-1.
according to an embodiment of the present invention, the organoaluminum compound is preferably an aluminum alkyl, more preferably a trialkylaluminum, and the alkyl group is preferably C 1 -C 6 More preferably, the alkyl group of (a) is ethyl, n-propyl, isopropyl, n-butyl, isobutyl or tert-butyl. The preferable organoaluminum compound includes, but is not limited to, one or two or more of triethylaluminum and triisobutylaluminum.
The invention also provides the application of the catalyst to the preparation of olefin polymers.
The invention also provides a preparation method of the olefin polymer, which comprises the step of carrying out contact reaction on the olefin and the catalyst system.
According to an embodiment of the invention, the olefin is propaneThe alkene and the optional comonomer are polymerized by adopting the olefin polymerization catalyst system in the presence of hydrogen, so that the high isotactic propylene polymer can be prepared with high activity. The comonomer may be ethylene and C 4 -C 8 Of alpha-olefins.
According to an embodiment of the present invention, the olefin is preferably propylene. According to this preferred embodiment, the polymerization may be bulk polymerization or gas phase polymerization.
The invention has the advantages of
(1) The external electron donor compound provided by the invention can effectively improve the melt fluidity (which can be seen from the improvement of Melt Flow Rate (MFR)) and molecular weight distribution of polypropylene under the condition that high isotactic polypropylene (96%) with equivalent isotacticity is obtained by using activity equivalent to that of the conventional external electron donor.
(2) The preparation method of the five-membered cyclic oxysilane external electron donor is simple, the side reaction is less, the product is easy to separate, and meanwhile, the novel external electron donor can improve the polymerization activity and/or the directional polymerization capability, and particularly shows excellent comprehensive performance in olefin polymerization.
Interpretation of terms
The term "C 1 -C 10 Alkyl "is understood to mean straight-chain and branched alkyl groups having 1,2, 3,4, 5, 6, 7, 8, 9 or 10 carbon atoms, C 1-6 Alkyl "denotes straight-chain and branched alkyl groups having 1,2, 3,4, 5 or 6 carbon atoms. The alkyl group is, for example, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, an isopropyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, an isopentyl group, a 2-methylbutyl group, a 1-ethylpropyl group, a 1, 2-dimethylpropyl group, a neopentyl group, a 1, 1-dimethylpropyl group, a 4-methylpentyl group, a 3-methylpentyl group, a 2-ethylbutyl group, a 1-ethylbutyl group, a 3, 3-dimethylbutyl group, a 2, 2-dimethylbutyl group, a 1, 1-dimethylbutyl group, a 2, 3-dimethylbutyl group, a 1, 3-dimethylbutyl group or a 1, 2-dimethylbutyl group, or the like, or isomers thereof.
The term "C 6 -C 20 Aryl "is understood to preferably mean a monocyclic, bicyclic or tricyclic hydrocarbon ring of monovalent or partial aromaticity having 6 to 20 carbon atoms, preferably" C 6- C 14 Aryl ". The term "C 6 -C 14 Aryl "is to be understood as preferably meaning a mono-, bi-or tricyclic hydrocarbon ring having a monovalent or partially aromatic character with 6, 7, 8, 9, 10, 11, 12, 13 or 14 carbon atoms (" C 6 -C 14 Aryl group "), in particular a ring having 6 carbon atoms (" C 6 Aryl "), such as phenyl; or biphenyl, or is a ring having 9 carbon atoms ("C 9 Aryl), such as indanyl or indenyl, or a ring having 10 carbon atoms ("C) 10 Aryl radicals), such as tetralinyl, dihydronaphthyl or naphthyl, or rings having 13 carbon atoms ("C 13 Aryl radicals), such as the fluorenyl radical, or a ring having 14 carbon atoms ("C) 14 Aryl), such as anthracenyl. When said C is 6-20 When the aryl group is substituted, it may be mono-or polysubstituted. And, the substitution site thereof is not limited, and may be, for example, ortho-, para-or meta-substitution.
The term "C 3- C 40 Cycloalkyl is understood to mean a saturated monovalent monocyclic, bicyclic hydrocarbon ring or bridged cycloalkane having 3 to 40 carbon atoms, preferably "C 3- C 10 Cycloalkyl groups ". The term "C 3- C 10 Cycloalkyl "is understood to mean a saturated, monovalent monocyclic, bicyclic hydrocarbon ring or bridged cycloalkane having 3,4, 5, 6, 7, 8, 9 or 10 carbon atoms. Said C is 3- C 10 Cycloalkyl groups may be monocyclic hydrocarbon groups such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl or cyclodecyl, or bicyclic hydrocarbon groups such as decalin rings. The cycloalkyl group may be spiro, e.g. spiro [3,3 ]]Cyclo and spiro [3,4 ]]Cyclo and spiro [3,5 ]]Cyclo and spiro [4,4 ]]Cyclo and spiro [4,5 ]]Cyclo and spiro [5,5 ]]And (4) a ring.
Drawings
FIG. 1 is a diagram of the preparation of an external electron donor in example 1 1 H NMR spectrum;
FIG. 2 shows the preparation of example 2Of the external electron donor 1 H NMR spectrum;
FIG. 3 is a diagram of the preparation of an external electron donor in example 3 1 H NMR spectrum;
FIG. 4 is a diagram of the preparation of an external electron donor in example 4 1 H NMR spectrum;
FIG. 5 is a diagram of the external electron donor prepared in example 5 1 H NMR spectrum;
FIG. 6 is a diagram of the preparation of an external electron donor in example 6 1 H NMR spectrum;
FIG. 7 is a diagram of the external electron donor prepared in example 7 1 H NMR spectrum;
FIG. 8 is a diagram of an external electron donor prepared in example 8 1 H NMR spectrum.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to specific embodiments. It is to be understood that the following examples are only illustrative and explanatory of the present invention and should not be construed as limiting the scope of the present invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.
Unless otherwise specified, the raw materials and reagents used in the following examples are all commercially available products or can be prepared by known methods.
The following examples and comparative examples relate to the following test methods:
1. the polymerization activity was calculated by the following method:
2. The melt index (MFR) of polypropylene was measured using a melt flow rate meter model 6542 from Geast, Italy, in GB/T3682-.
3. The isotacticity of the polypropylene was determined by the heptane extraction method, by placing about 2.0g of the polypropylene in a soxhlet extractor, extracting with boiling heptane for 6 hours, drying the remaining polymer to constant weight, and dividing the amount of remaining polymer by the amount of polymer initially charged in the soxhlet extractor to give the isotacticity.
4. Number average molecular weight (M) of the Polymer n ) Weight average molecular weight (M) w ) And molecular weight distribution (PD) determined using high temperature Gel Permeation Chromatography (GPC): polystyrene (PS) is used as a reference standard, and trichlorobenzene is used as a solvent.
Examples 1-8 and comparative examples 1-2 relate to the use of the following solid catalyst components, which were prepared as follows:
4.94g of anhydrous magnesium chloride, 18.9g of isooctanol and 30ml of decane are sequentially added into a reactor fully replaced by high-purity nitrogen, the temperature is raised to 130 ℃ under stirring and maintained for 2 hours, then 2.65g of tetrabutyl titanate and 10mmol of diisobutyl phthalate are added, the reaction is carried out for 1 hour at the temperature of 130 ℃, and finally the mixture is cooled to room temperature (25 ℃) to form a uniform transparent solution, namely the mixture I.
200ml of titanium tetrachloride was added to the reaction vessel, stirred and preheated to-20 ℃ and the mixture I was added dropwise to the titanium tetrachloride over about 2 hours. After the dropwise addition, the temperature was raised to 110 ℃ within 2 hours. 5mmol of diisobutylphthalate are added. After reacting at this temperature for 2 hours, the reaction liquid was removed, and 200ml of titanium tetrachloride was added again to react for 2 hours. Finally, the reaction liquid was removed, and the remaining solid matter was washed 10 times with hexane at 60 ℃ and dried to obtain a solid component. The solid is analyzed to have the molar ratio of titanium element, magnesium element and diisobutyl phthalate of 1: 22: 0.85.
example 1
Synthesis of five-membered cyclic aminosilane a: in a 500mL three-necked flask, 14.4g (0.1mol) of N, N' -diisopropylethylenediamine and 100mL of tetrahydrofuran are added under nitrogen protection, and cooled to-80 ℃; then dropwise adding 125mL of n-butyllithium solution (0.2mol, concentration of 1.6M), reacting for 30 minutes, slowly heating to room temperature, and continuing to react for one hour; then cooling to-80 ℃ again; to this was added 15.2g (0.1mol) of tetramethyl silicate, and the mixture was slowly warmed to room temperature and reacted overnight. The reaction was quenched with water, extracted with ethyl acetate, and the organic phases were combined, washed, dried, and distilled under reduced pressure to obtain 14.8g of compound a (yield 63.8%).
The nuclear magnetic characterization results of compound a are shown in fig. 1: 1 H NMR(400MHz,CDCl 3 )δ3.47(s,6H),3.01(s,4H),1.13(d,J＝6.4Hz,12H).
application of five-membered cyclic aminosilane A: A5L high-pressure reaction kettle is heated and vacuumized, nitrogen is replaced for three times, 20mg of the catalyst solid component, triethyl aluminum and a five-membered cyclic aminosilane external electron donor A are added, the addition amount is that Ti: Si: Al (molar ratio) is 1:30:600, and then 84mmol of hydrogen and 800g of propylene are added. And closing the reaction kettle, raising the temperature of the reaction kettle to 70 ℃, and discharging unreacted propylene after the polymerization reaction is carried out for 30 minutes to obtain a polypropylene product. The characterization data for polypropylene are shown in Table 1.
Example 2
The synthesis of five-membered cyclic aminosilane B adopts the same method and raw material ratio as compound A, and the difference is that N, N '-dicyclopentyl ethylenediamine is adopted to replace N, N' -diisopropyl ethylenediamine. Compound B (20.6 g, 72.5% yield) is finally obtained.
The nuclear magnetic characterization results of compound B are shown in fig. 2: 1 H NMR(400MHz,CDCl 3 )δ3.46(s,6H),3.17(t,J＝7.4Hz,2H),3.01(s,4H),1.88–1.80(m,6H),1.56–1.39(m,10H).
the use of the five-membered cyclic aminosilane B was tested in the same manner as for compound A. The characterization data of the polypropylene obtained are shown in Table 1.
Example 3
The synthesis of five-membered cyclic aminosilane C adopts the same method and raw material ratio as compound A, and the difference is that N, N '-dicyclohexylethylenediamine is used to replace N, N' -diisopropylethylenediamine. Compound C22.6 g (yield 72.2%) is finally obtained.
The nuclear magnetic characterization of compound C is shown in fig. 3: 1 H NMR(400MHz,CDCl 3 )δ3.46(s,6H),3.03(s,4H),2.61(t,J＝10.4Hz,2H),1.82–1.55(m,8H),1.34–1.00(m,12H).
the use of the five-membered cyclic aminosilane C was tested in the same manner as for compound A. The characterization data of the polypropylene obtained are shown in Table 1.
Example 4
The synthesis of five-membered cyclic aminosilane D adopts the same method and raw material proportion as compound A, and the difference is that: replacing N, N '-diisopropyl ethylenediamine with N, N' -di-tert-butyl ethylenediamine; separating the product by using a chromatographic column. Finally, 21.7g of compound D (yield 83.3%) were obtained.
The nuclear magnetic characterization of compound D is shown in figure 4: 1 H NMR(400MHz,CDCl 3 )δ3.47(s,6H),2.98(s,4H),1.18(s,18H).
the use of the five-membered cyclic aminosilane D was tested in the same manner as for Compound A. The characterization data of the polypropylene obtained are shown in Table 1.
Example 5
The synthesis of five-membered cyclic aminosilane E adopts the same method and raw material proportion as compound A, and the difference is that: replacing N, N '-diisopropyl ethylenediamine with N, N' -diamantane ethylenediamine; separating the product by using a chromatographic column. Compound E29.1 g (69.8% yield) is finally obtained.
The nuclear magnetic characterization of compound E is shown in figure 5: 1 H NMR(400MHz,CDCl 3 )δ3.49(s,6H),2.97(s,4H),2.05(s,6H),1.77(s,10H),1.67–1.55(m,14H).
the use of the five-membered cyclic aminosilane E was tested in the same manner as for compound A. The characterization data of the polypropylene obtained are shown in Table 1.
Example 6
The synthesis of five-membered cyclic aminosilane F adopts the same method and raw material ratio as compound A, and the difference is that: replacing N, N '-diisopropyl ethylenediamine with N, N' -diphenyl ethylenediamine; separating the product by using a chromatographic column. Finally, 28.5g of Compound F (yield 95.0%) are obtained.
The nuclear magnetic characterization of compound F is shown in fig. 6: 1 H NMR(400MHz,CDCl 3 )δ7.41–7.24(m,4H),6.93(d,J＝6.7Hz,4H),6.87(t,J＝7.3Hz,2H),3.63(s,4H),3.50(d,J＝2.6Hz,6H).
the use of the five-membered cyclic aminosilane F was tested in the same manner as for compound A. The characterization data of the polypropylene obtained are shown in Table 1.
Example 7
The synthesis of five-membered cyclic aminosilane G adopts the same method and raw material proportion as compound A, and the difference is that: n, N '-di (2, 6-dimethylphenyl) ethylenediamine is adopted to replace N, N' -diisopropyl ethylenediamine; and separating the product by using a chromatographic column. Compound G (yield 96.2%) 34.3G is finally obtained.
The nuclear magnetic characterization results of compound G are shown in fig. 7: 1 H NMR(400MHz,CDCl 3 )δ7.07(d,J＝7.6Hz,4H),7.00(d,J＝6.7Hz,2H),3.42(s,10H),2.48(s,12H).
the use of the five-membered cyclic aminosilane G was tested in the same manner as for compound A. The characterization data of the polypropylene obtained are shown in Table 1.
Example 8
The synthesis of five-membered cyclic aminosilane H adopts the same method and raw material proportion as compound A, and the difference is that: n, N '-di (2, 6-diisopropylphenyl) ethylenediamine is adopted to replace N, N' -diisopropylethylenediamine; separating the product by using a chromatographic column. Finally, 46.2g of compound H (yield 98.5%) are obtained.
The nuclear magnetic characterization of compound H is shown in figure 8: 1 H NMR(400MHz,CDCl 3 )δ7.55–7.05(m,6H),4.15–3.78(m,4H),3.64–3.32(m,10H),1.65–1.16(m,24H).
the use of the five-membered cyclic aminosilane H was tested in the same manner as for compound A. The characterization data of the polypropylene obtained are shown in Table 1.
Comparative example 1
An experiment was carried out in the same manner as in example 1 using diisopropyldimethoxysilane (Donor-P) as an external electron Donor. The characterization data of the polypropylene obtained are shown in Table 1.
TABLE 1 characterization results of the obtained polypropylene products
From the above data, it can be seen that when penta-cyclic aminosilane is used as the external electron donor, a polypropylene product with high isotacticity can be obtained. Compared with the external electron Donor Donor-P commonly used in the industry at present, the five-membered cyclic aminosilane external electron Donor designed by the inventor has equivalent catalytic activity when used for propylene polymerization, but the molecular weight distribution and the melt index of a polymer are obviously improved, and a higher melt index (MFR) shows that the polypropylene has a higher melt speed, better melt fluidity, faster mold filling, lower energy consumption and higher production efficiency, and is favorable for processing materials. The characteristics show that the external electron donor is hopeful to be used for developing new polypropylene materials, particularly for developing polypropylene with wide distribution and high fluidity.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A five-membered cyclic aminosilane external electron donor is characterized by having a structural formula shown as the following formula I:
wherein R is 1 And R 2 Same or different, each independently selected from substituted or unsubstituted C 1 -C 10 Alkyl, or substituted or unsubstituted C 6 -C 20 Aryl, or substituted or unsubstituted C 3 -C 40 A cycloalkyl group;
R 3 、R 4 、R 5 and R 6 The same or different, each independently is hydrogen, halogen, C 1 -C 10 Alkyl or substituted or unsubstituted C 6 -C 20 An aryl group; the halogen is chlorine or bromine.
2. An external electron donor according to claim 1, wherein R is 1 And R 2 Identical or different, each independently selected from substituted or unsubstituted C 1 -C 6 Alkyl, or substituted or unsubstituted C 6 -C 14 Aryl, or substituted or unsubstituted C 3 -C 10 A cycloalkyl group; for example, R 1 And R 2 Preferably, the compound is one selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopentyl, cyclohexyl, adamantyl, benzyl, phenyl, 2, 6-dimethylphenyl, 2, 6-diethylphenyl, 2, 6-diisopropylphenyl, and 2,4, 6-trimethylphenyl.
Preferably, R 3 、R 4 、R 5 And R 6 Preferably H.
3. An external electron donor according to claim 1, characterized in that the five-membered cyclic aminosilane external electron donor is selected from the following structures:
more preferably, the five-membered cyclic aminosilane external electron donor is selected from structural formula F, structural formula G and structural formula H.
4. The method for preparing an external electron donor according to any one of claims 1 to 3, wherein the method specifically comprises: uniformly mixing a solution of an ethylenediamine compound shown in a structural formula II with a n-butyllithium solution, heating for the first time, adding tetraethyl silicate, and heating for the second time to prepare a five-membered cyclic aminosilane external electron donor;
R 1 -NH-CR 3 R 5 -CR 4 R 6 -NH-R 2 formula II;
wherein R is 1 、R 2 、R 3 、R 4 、R 5 And R 6 Has the meaning as above.
Preferably, the temperature of the first heating is 15-30 ℃, and the heating time is 0.5-5 h.
Preferably, the temperature of the second heating is 15-30 ℃, and the heating time is 0.5-48 h.
5. The method for preparing an external electron donor according to claim 4, wherein the molar ratio of ethylenediamine compound, n-butyllithium and tetramethyl silicate is 1 (2.0-2.4) to (0.9-1.2), and more preferably 1 (2.0-2.2) to (1.0-1.2).
Preferably, the n-butyllithium solution and the tetramethyl silicate are both added at-60 to-90 ℃.
Preferably, the solution of the ethylenediamine-based compound may be a tetrahydrofuran solution of the ethylenediamine-based compound.
Preferably, the concentration of the solution of the ethylenediamine-based compound is 0.5-1.5 mol/L.
Preferably, the n-butyllithium is added dropwise, and the concentration of the n-butyllithium solution is 0.5-2 mol/L.
Preferably, the preparation of the five-membered cyclic aminosilane external electron donor is carried out in an inert gas atmosphere, such as nitrogen, argon.
6. Use of an external electron donor according to any of claims 1 to 5 in a catalyst system, preferably an olefin polymerization catalyst system.
Preferably, the catalyst system comprises the following components:
a solid component comprising titanium, magnesium, and an internal electron donor compound;
an organoaluminum compound; and
an external electron donor, which is a cationic polymer,
wherein the external electron donor is the five-membered cyclic aminosilane external electron donor disclosed by the invention.
7. Use of an external electron donor according to claim 1, characterized in that the molar ratio of external electron donor to titanium element in the solid component can be 2-50, preferably 5-30.
Preferably, in the solid component, the molar ratio of the titanium element, the magnesium element and the internal electron donor compound may be 1: 1-50: 0.1 to 1.5, preferably 1: 5-40: 0.2-1.2.
Preferably, the Al/Ti molar ratio of the aluminum element in the organoaluminum compound to the titanium element in the solid component may be 10 to 1000. The organoaluminum compound is preferably trialkylaluminum, more preferably triethylaluminum and/or triisobutylaluminum.
Preferably, in the solid component, magnesium is provided in the form of a magnesium-containing carrier, and titanium and the internal electron donor compound are supported on the magnesium-containing carrier. The magnesium-containing carrier is preferably magnesium chloride.
Preferably, in the solid component, the internal electron donor compound is preferably a phthalate type internal electron donor compound, more preferably a phthalate type internal electron donor compound, and even more preferably one or more of diisobutyl phthalate, di-n-butyl phthalate, and di-n-propyl phthalate.
8. The use of an external electron donor according to claim 7, wherein the solid component is prepared by a process comprising: dispersing a magnesium compound in a dispersion medium to obtain a magnesium-containing dispersion medium; carrying out first contact on the magnesium-containing dispersion medium, a first titanium compound and a first internal electron donor compound to obtain a first contact dispersion liquid; and carrying out second contact on the first contact dispersion liquid, a second titanium compound and a second internal electron donor compound to obtain a second contact dispersion liquid, and removing a dispersion medium in the second contact dispersion liquid to obtain the solid component.
Preferably, the dispersion medium is preferably C 5 -C 12 Of alkanol and/or C 6 -C 12 More preferably isooctanol and/or decane.
Preferably, the mass ratio of the alkanol to the alkane may be 1: 0.5-2; the weight ratio of the magnesium compound to the dispersion medium may be 1: 5-20.
Preferably, the first titanium compound is preferably a titanate, which may include but is not limited to: tetramethyl titanate, tetraethyl titanate, tetrapropyl titanate and tetrabutyl titanate.
Preferably, the first internal electron donor compound is a diester phthalate type internal electron donor compound, more preferably a dialkyl phthalate type internal electron donor compound, and even more preferably one or more of diisobutyl phthalate, di-n-butyl phthalate, and di-n-propyl phthalate.
Preferably, the first contacting is carried out at a temperature of 100 ℃ and 140 ℃ and the duration of the first contacting is 0.5 to 3 hours.
9. Use of an external electron donor according to claim 1, characterized in that the second titanium compound is preferably an inorganic titanium compound, more preferably a titanium tetrahalide, even more preferably titanium tetrachloride.
Preferably, the second internal electron donor compound is preferably a phthalate type internal electron donor compound, more preferably a phthalate type dialkyl ester (the alkyl group is preferably C) 1 -C 6 The alkyl group of (b) is more preferably one or two or more of diisobutyl phthalate, di-n-butyl phthalate and di-n-propyl phthalate. The first internal electron donor compound and the second internal electron donor compound may be the same or different, preferably the same.
Preferably, the second contacting may be performed at a temperature of 100-.
Preferably, the molar ratio of the first titanium compound to the second titanium compound is 1: 80-320. The molar ratio of the first internal electron donor compound to the second internal electron donor compound is 1: 0.2-1.
preferably, the organoaluminum compound is an alkyl groupAluminum, more preferably trialkylaluminum, the alkyl group preferably being C 1 -C 6 More preferably, the alkyl group of (a) is ethyl, n-propyl, isopropyl, n-butyl, isobutyl or tert-butyl. The preferable organoaluminum compound includes, but is not limited to, one or two or more of triethylaluminum and triisobutylaluminum.
10. Use of an external electron donor according to any of claims 1-9 for the preparation of an olefin polymer.
Preferably, the olefin polymer is prepared by a method comprising contacting an olefin with a catalyst system.
Preferably, the olefin is propylene and optional comonomer, and the propylene and optional comonomer are polymerized by using the olefin polymerization catalyst system as defined in claim 9 in the presence of hydrogen to prepare the isotactic propylene polymer.
Preferably, the comonomer may be ethylene and C 4 -C 8 Of alpha-olefins.
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