KR20210022411A - Rubber composition for tire sidewall and Tire comprising same - Google Patents

Abstract

Provided are a tire sidewall rubber composition, comprising: a compound containing a thiocarbamoyl dithio group; and a bis-citraconimide-based or bis-itaconimide-based compound, and a tire made of the composition. The tire made of the sidewall rubber composition exhibits better fuel efficiency and physical properties than a tire made of a sidewall rubber composition of the prior art.

Description

Rubber composition for tire sidewall and tire comprising the same

It relates to a rubber composition for a tire sidewall and a tire including the same.

With the growing interest in environmental issues around the world, the demand for environmentally friendly products from everyday life products to industrial products is increasing.

One aspect of this trend is to improve the fuel economy of automobiles. In order to improve the fuel efficiency of automobiles, in addition to the development demand for the automobile itself, the demand for fuel efficiency improvement of tires essential for automobiles continues as well.

In general, tires are largely composed of tread, sidewall, and bead.In particular, the sidewall is a part that connects the tread and the bead, and is closely related to the fuel economy and safety of high-speed vehicles. Therefore, the physical properties of the sidewall area are important.

One aspect is to provide a rubber composition for a side wall for providing a tire with improved fuel efficiency and physical properties.

Another aspect is to provide a tire made of the rubber composition.

According to one aspect,

As a tire sidewall rubber composition,

A compound containing a thiocarbamoyldithio group; And

Bis-citraconimide-based or bis-itaconimide-based compounds;

A tire sidewall rubber composition comprising is provided.

According to the other side,

A tire made of the sidewall rubber composition is provided.

Tires made with the sidewall rubber composition according to an embodiment of the present invention show superior fuel economy and physical properties than tires made with the sidewall rubber compositions of the prior art.

1 is a schematic diagram showing that some of the rubber molecular chains (left) are cut (right) in a high-temperature vulcanization process.
FIG. 2 is an enlarged view of a circle on the right side of FIG. 1.
3 is an enlarged view schematically showing that some rubber molecular chains cut in a high-temperature vulcanization process are reconnected by a biscitraconimide-based or bisitaconimide-based compound.
4 is a diagram schematically showing the structure of a tire according to an embodiment.

Hereinafter, a tire sidewall rubber composition and a tire including the same will be described in more detail in an exemplary embodiment.

Since the inventive idea disclosed in the present specification can apply various transformations and have various implementations, specific implementations are described in detail in the detailed description, and when necessary, specific implementations are illustrated in the drawings. Effects and features of the creative ideas of the present specification, and a method of achieving them will be apparent with reference to implementation examples described later in detail together with the drawings. However, the creative idea of the present specification is not limited to the embodiments disclosed below, but may be implemented in various forms.

In the following embodiments, terms such as first and second are not used in a limiting meaning, but are used for the purpose of distinguishing one component from another component.

In the following embodiments, expressions in the singular include plural expressions unless the context clearly indicates otherwise.

In the following embodiments, terms such as include or have means that the features or elements described in the specification are present, and do not preclude the possibility of adding one or more other features or elements in advance.

When one embodiment can be implemented differently, a specific process order may be performed differently from the described order. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to the described order.

Hereinafter, if necessary, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. It should be.

In the drawings, components may be exaggerated or reduced in size for convenience of description. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, and thus the creative ideas disclosed in the present specification are not necessarily limited to those shown.

Tire sidewall rubber composition according to one aspect is a compound containing a thiocarbamoyldithio group (thiocarbamoyldithio group); And a bis-citraconimide-based or bis-itaconimide-based compound.

According to an embodiment of the present invention, the compound containing the thiocarbamoyldithio group may be represented by the following formula (1):

<Formula 1>

In Formula 1, Ar ₁ to Ar ₄ are each independently selected from a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, and a C ₁ -C ₆₀ heteroaryl group,

L ₁ to L ₅ are each independently selected from a C ₁ -C ₁₀ alkylene group, a C ₆ -C ₆₀ arylene group, and a C ₁ -C ₆₀ heteroarylene group,

l, m, n and o are each independently an integer of 0 to 3,

p is an integer from 1 to 10.

According to an embodiment of the present invention, L ₁ to L ₅ in Formula 1 may be _{C 1} -C ₁₀ alkylene groups independently of each other. For example, all of L ₁ to L ₅ may be methylene groups (-CH ₂ -).

According to an embodiment of the present invention, Ar ₁ to Ar ₄ in Formula 1 may be _{C 6} -C ₆₀ aryl groups independently of each other. For example, Ar ₁ to Ar ₄ may all be phenyl groups.

According to an embodiment of the present invention, in Formula 1, l, m, n, and o may be 1 to 2 independently of each other. For example, l, m, n, and o may all be 1.

According to an embodiment of the present invention, in Formula 1, p may be 3 to 8. For example, p may be 6.

According to an embodiment of the present invention, the compound of Formula 1 is 1,6-bis (N,N-dibenzylthiocarbamoyldithio)-hexane (1,6-bis (N,N-dibenzylthiocarbamoyldithio) -hexane).

1,6-bis(N,N-dibenzylthiocarbamoyldio)-hexane[DBTH] has the following structure.

Sulfur connecting the rubber molecular chain and usually form a three dimensional network by binding to the radical is generated by cleavage at 160 ℃ as the structure of the S _8, double bond next to the seat (allylic position) of the generated radicals are predominantly rubber molecular chain, That is, it is crosslinked to exhibit elasticity.

On the other hand, when curing at high temperature, for example at 180°C, reversal may occur, and DBTH has been used to prevent this. DBTH is decomposed in the vulcanization process and plays a role in reducing the sulfur rank between rubber molecular chains to prevent reversal, but has a disadvantage in that tear and fatigue properties become weak.

Since sidewalls are often flexed in tires, durability against them is important. Curing agents used in the manufacture of sidewall compounds are generally sulfur and crosslinking accelerators, and a crosslinked structure is formed by sulfur in the compound. When the tire is vulcanized, a temperature of 160°C to 180°C is used, and when 180°C is used to shorten the curing time, the crosslinked structure made of sulfur collapses, resulting in deterioration in fuel efficiency and tensile properties of the sidewall.

Tire sidewall rubber composition according to an embodiment of the present invention comprises a bis-citraconimide-based or bis-itaconimide-based compound, the third crosslinked structure on the sidewall By introducing a crosslinked structure even at high temperature vulcanization, fuel efficiency and tensile properties are maintained and improved.

According to an embodiment of the present invention, the bis-citraconimide-based or bis-itaconimide-based compound is

N,N'-ethylene-bis-citraconic imide; N,N'-hexamethylene-bis-citraconic imide; N,N'-tetramethylene-bis-citraconic imide; N,N'-2-methyl-pentamethylene-bis-citraconic imide; N,N'-(1,3-propylene)-bis-citraconic imide); N,N'-(3,3'-oxydipropylene)-bis-citraconimide (N,N'-(3,3'-oxydipropylene)-bis-citraconic imide); N,N'-(aminodiethylene)-bis-citraconimide (N,N'-(aminodiethylene)-bis-citraconic imide); N,N'-(aminodipropylene)-bis-citraconic imide); N,N'-(1,10-(4,7-dioxa)-decanediyl)-bis-citraconimide (N,N'-(l,10-(4,7-dioxa)-decanediyl) -bis-citraconic imide); N,N'-(4,4'-(di-(2-methyl cyclohexyl)methylene)-bis-citraconimide (N,N'-(4,4'-(di-(2-methyl cyclohexyl) )methylene)-bis-citraconic imide); N,N'-(4,4'-dicyclohexyl-isopropylene)-bis-citraconimide (N,N'-(4,4'-dicyclohexyl-isopropylene) )-bis-citraconic imide); N,N'-(4,4'-dicyclohexyloxy)-bis-citraconimide (N,N'-(4,4'-dicyclohexyloxy)-bis-citraconic imide); N,N'-(4,4'-dicyclohexylene)-bis-citraconimide (N,N'-(4,4'-dicyclohexylene)-bis-citraconic imide); N,N '-o-phenylene-bis-citraconimide (N,N'-o-phenylene-bis-citraconic imide); N,N'-phenylene-bis-citraconimide (N,N'-phenylene -bis-citraconic imide); N,N'-m-phenylene-bis-itaconic imide (N,N'-m-phenylene-bis-itaconic imide); N,N'-p-phenylene-bis -Citraconimide (N,N'-p-phenylene-bis-citraconic imide); N,N'-(5-chloro-1,3-phenylene)-bis-citraconimide (N,N' -(5-chloro-l,3-phenylene)-bis-citraconic imide); N,N'-(5-hydroxy-1,3-phenylene)-bis-citraconimide (N,N'- (5-hydroxy-l,3-phenylene)-bis-citraconic imide); N,N'-(5-methoxy-1,3-phenylene)-bis-citraconimide (N,N'-( 5-methoxy-1,3-phenylene)-bis-citraconic imide); N,N'-(α,α'-(1,3-dimethyl phenylene))-bis-citraconimide (N,N' -(α,α'-(1,3-dimethyl phenylene))-bis-citraconic imide); N,N'-(4,4'-(l,10-decanediol-dibenzo 8))-bis-citraconimide (N,N'-(4,4'-(l,10-decanediol-dibenzoate))-bis-citraconic imide); N,N'-(4,4'-diphenyl-bisphenol-A-ether)-bis-citraconimide (N,N'-(4,4'-diphenyl-bisphenol-A-ether)-bis- citraconic imide); N,N'-(4,4'-biphenylene)-bis-citraconimide (N,N'-(4,4'-biphenylene)-bis-citraconic imide); N,N'-(4,4'-diphenylmethylene)-bis-citraconimide (N,N'-(4,4'-diphenylmethylene)-bis-citraconic imide); N,N'-(4,4'-diphenylmethylene)-bis-itaconimide (N,N'-(4,4'-diphenylmethylene)-bis-itaconic imide); N,N'-m-xylylene-bis-citraconic imide; N,N'-(4,4'-diphenyl isopropylene)-bis-citraconimide (N,N'-(4,4'-diphenyl isopropylene)-bis-citraconic imide); N,N'-(3,3'-dimethyl-4,4'-biphenylene)-bis-citraconimide (N,N'-(3,3'-dimethyl-4,4'-biphenylene) -bis-citraconic imide): N,N'-(3,3'-dichloro-4,4'-biphenylene-bis-citraconimide (N,N'-(3,3'-dichloro-4 ,4'-biphenylene-bis-citraconic imide); N,N'-(3,3'-difluoro-4,4'-biphenylene)-bis-citraconimide (N,N'-( 3,3'-difluoro-4,4'-biphenylene)-bis-citraconic imide); N,N'-(4,4'-oxydiphenylene)-bis-citraconimide (N,N'- (4,4'-oxydiphenylene)-bis-citraconic imide); N,N'-(4,4'-diphenylsulfone)-bis-citraconimide (N,N'-(4,4'-diphenylsulfone) )-bis-citraconic imide); N,N'-(4,4'-diphenylcarboxy)-bis-citraconimide (N,N'-(4,4'-diphenyl carboxy)-bis-citraconic imide ); N,N'-(4,4'-(1,1-diphenyl propylene))-bis-citraconimide (N,N'-(4,4'-(1,1-diphenyl propylene)) )-bis-citraconic imide); N,N'-3,5-(1,2,4-triazole)-bis-citraconimide (N,N'-3,5-(1,2,4 -triazole)-bis-citraconic imide); N,N'-dodecamethylene-bis-citraconic imide; N,N'-(2,2,4 -Trimethylhexamethylene)-bis-citraconimide (N,N'-(2,2,4-trimethylhexamethylene)-bis-citraconic imide); N,N'-(1,11-(4,8-di Oxa-undecanediyl))-bis-citraconimide (N,N'-(1,11-(4,8-dioxa-undecanediyl))-bis-citraconic imide); N,N'-(4, 4'-benzophenonediyl)-bis-sheet Raconimide (N,N'-(4,4'-benzophenonediyl)-bis-citraconic imide); N,N'-(1,4-anthraquinonediyl)-bis-citraconimide (N,N'-(1,4-anthraquinonediyl)-bis-citraconic imide); N,N'-(1,3-naphthalenediyl)-bis-citraconic imide; N,N'-(1,4-naphthalenediyl)-bis-citraconic imide; N,N'-(1,5-naphthalenediyl)-bis-citraconimide (N,N'-(1,5-naphthalenediyl)-bis-citraconic imide); N,N'-(1,3-cyclohexylene)-bis-citraconic imide; N,N'-(1,4-cyclohexylene)-bis-citraconic imide; N,N'-(5-methyl-1,3-phenylene)-bis-citraconimide (N,N'-(5-methyl-1,3-phenylene)-bis-citraconic imide); N,N'-(α,α'-(1,3-dimethylcyclohexylene))-bis-citraconimide (N,N'-(α,α'-(1,3-dimethylcyclohexylene))- bis-citraconic imide); N,N'-(α,3-(1,1,5,5-tetramethyl-cyclohexylene))-bis-citraconimide (N,N'-(α,3-(1,1, 5,5-tetramethyl-cyclohexylene))-bis-citraconic imide); N,N'-(isophoronyl)-bis-citraconic imide; N,N'-(dimethyltricyclododecylene)-bis-citraconimide (N,N'-(dimethyltricyclododecylene)-bis-citraconic imide); N,N'-octamethylene-bis-citraconic imide; N,N'-(1,2-propylene)-bis-citraconimide (N,N'-(1,2-propylene)-bis-citraconic imide); N,N'-decamethylene-bis-citraconic imide; N,N'-heptamethylene-bis-citraconic imide; N,N'-(5-bromo-1,3-phenylene)-bis-citraconimide (N,N'-(5-bromo-1,3-phenylene)-bis-citraconic imide); N,N'-(1,13-(7-aza-tridecanediyl))-bis-citraconimide (N,N'-(1,13-(7-aza-tridecanediyl))-bis-citraconic imide); N,N'-(l,7-(4-aza-heptanediyl))-bis-citraconimide (N,N'-(l,7-(4-aza-heptanediyl)))-bis-citraconic imide ); N,N'-(1,11-(3,6,9-triaza-undecandiyl))-bis-citraconimide (N,N'-(1,11-(3,6,9- triaza-undecanediyl))-bis-citraconic imide); N,N'-(1,8-(3,6-diaza-octanediyl)-bis-citraconimide (N,N'-(1,8-(3,6-diaza-octanediyl)-bis -citraconic imide); N,N'-(N,N'-di-2-ethylpiperazinyl)-bis-citraconimide (N,N'-(N,N'-di-2-ethylpiperazinyl) -bis-citraconic imide); N,N'-(2-hydroxy-1,3-propylene)-bis-citraconimide (N,N'-(2-hydroxy-1,3-propylene)-bis -citraconic imide); N,N',N"-(2,4,6-trihexamethylene-isocyanuratetriyl)-tris-citraconimide (N,N',N"-(2, 4,6-trihexamethylene-isocyanuratetriyl)-tris-citraconic imide); N,N'-(3,5-benzoicaciddiyl)-bis-citraconimide (N,N'-(3,5-benzoicaciddiyl)-bis -citraconic imide); N,N'-pentamethylene-bis-citraconimide (N,N'-pentamethylene-bis-citraconic imide); N,N'-undeca methylene-bis-citraconimide (N ,N'-undecamethylene-bis-citraconic imide); N,N'-(4-(N-methylene-citraconimide)-octamethylene-bis-citraconimide (N,N'-(4-( N-methylene-citraconic imide)-octamethylene-bis-citraconic imide); N,N'-nonamethylene-bis-citraconic imide); N,N'-( 2-butyl-2-ethylpentamethylene)-bis-citraconimide (N,N'-(2-butyl-2-ethylpentamethylene)-bis-citraconic imide); N,N'-polytetrahydrofuryl-bis -Citraconimide (N,N'-polytetrahydrofuryl-bis-citraconic imide); And 1,1'-[1,3-phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5 -Dion)( 1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione)).

For example, the bis-citraconimide-based compound is 1,1'-[1,3-phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione )[1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione)].

1,1'-[1,3-phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) has the following structure.

It will be described using the drawings as follows.

In order to shorten the curing time, when curing at a high temperature, for example, 180° C., some sulfur bonds are destroyed. Referring to FIG. 1, for example, under a 180°C vulcanization condition, it schematically shows that the cross-linking bond of the left ellipse portion of FIG. 1 is cut. When curing is completed in this state, the physical properties of the sidewall are poor and the fuel economy is adversely affected.

Fig. 2 is an enlarged view of the left circle of Fig. 1, and Fig. 2 shows that a part including two double bonds exists in the rubber molecular chain.

As shown in Figure 2, two double bond moieties present in the rubber molecular chain and a bis-citraconimide-based or bis-itaconimide-based compound, for example, 1,1' -When [1,3-phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) bonds to Diels-Alder, the broken rubber molecular chains are reconnected as shown on the left side of FIG. 1 do.

3 is an enlarged view schematically showing that some rubber molecular chains cut in a high-temperature vulcanization process are reconnected by a biscitraconimide-based or bisitaconimide-based compound. Figure 3 shows the two imide moieties of 1,1'-[1,3-phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) present in the rubber molecular chain. It is shown schematically that a CC bond was generated by bonding with a double bond moiety.

In high temperature vulcanization (e.g. 180°C), the breakdown of the sulfur bond and the two double bond moieties present in the rubber molecular chain and bis-citraconimide or bis-itaconimide ) The reaction of the compound does not occur sequentially. The reaction between two double bond moieties present in the rubber molecular chain and a bis-citraconimide-based or bis-itaconimide-based compound reduces the spacing between the rubber molecular chains, By reaction with vulcanizing agent, sulfur, etc., the crosslinked structure of mono and di sulfide form increases in the crosslinked structure between rubber molecular chains.

Accordingly, the tire sidewall rubber composition according to an embodiment of the present invention is excellent in physical properties, fuel economy, etc. even when vulcanized under high temperature vulcanization conditions.

Referring to FIG. 4, the tire 10 includes a tread part 100, a sidewall part 200 and a bead part 300.

The tread portion 100 is a portion in contact with the ground in cross section, and serves to protect the tire from impact and trauma from the road surface. A plurality of blocks partitioned by grooves may be formed on the surface of the tread portion as described above to improve the drainage characteristics of the tire.

The sidewall 200 and the bead 300 are sequentially positioned on both sides along the width direction of the tire with the tread portion as the center.

The sidewall 200 is a part that extends from both ends of the tread to form side surfaces of the tire, withstands continuously repeated contraction and expansion during driving, and protects the carcass layer 400 located on the inner surface. Do it.

As described above, the rubber composition for a tire sidewall according to an embodiment of the present invention includes a compound containing a thiocarbamoyldithio group; And bis-citraconimide-based or bis-itaconimide-based compounds.

According to one embodiment of the present invention, the sidewall rubber composition may contain 0.1 to 0.5 parts by weight of a compound containing a thiocarbamoyldithio group based on 100 parts by weight of the raw rubber.

According to an embodiment of the present invention, the sidewall rubber composition contains 0.1 to 5.0 bis-citraconimide-based or bis-itaconimide-based compounds based on 100 parts by weight of the raw rubber. It may contain parts by weight.

When the content of the compound containing a thiocarbamoyl dithio group and the content of the biscitraconimide or bisitaconimide compound are within the above ranges, the physical properties of the sidewall rubber are optimal.

According to one embodiment of the present invention, the sidewall rubber composition may include natural rubber and/or synthetic rubber.

The natural rubber may be a general natural rubber or a modified natural rubber.

The general natural rubber may be used as long as it is known as natural rubber, and the country of origin is not limited. The natural rubber mainly contains cis-1,4-polyisoprene, but may contain trans-1,4-polyisoprene depending on required properties. Therefore, in addition to natural rubber containing cis-1,4-polyisoprene as a main body, the natural rubber includes trans-1,4-isoprene as a main body, such as Valata, a kind of rubber of the Sapota family from South America. It may also contain rubber.

The modified natural rubber means that the general natural rubber is modified or purified. For example, examples of the modified natural rubber include epoxidized natural rubber (ENR), deproteinized natural rubber (DPNR), and hydrogenated natural rubber.

According to an embodiment of the present invention, the synthetic rubber is at least selected from butadiene rubber, styrene butadiene rubber (SBR), isoprene-containing styrene butadiene rubber, nitrile-containing styrene butadiene rubber, neoprene rubber, chlorobutyl rubber, and bromobutyl rubber. It may contain one type.

According to one embodiment of the present invention, the rubber composition may include 40 to 80 parts by weight of the natural rubber and 10 to 60 parts by weight of the butadiene rubber as raw rubber (per 100 parts by weight of the raw rubber).

According to one embodiment of the present invention, the sidewall rubber composition may include a filler, and may include, for example, carbon black.

The carbon black may have a nitrogen surface area per gram (N ₂ SA) of 30 to 300 m ² /g, and an oil absorption of DBP (n-dibutyl phthalate) may be 60 to 180 cc/100 g, but the present invention This is not limited to this.

When the nitrogen adsorption specific surface area of the carbon black ^{exceeds 300 m 2} /g, the processability of the rubber composition for tires may be disadvantageous, and ^{when it is less than 30 m 2} /g, the reinforcing performance by carbon black as a filler may be disadvantageous. In addition, when the DBP oil absorption amount of the carbon black exceeds 180cc/100g, the processability of the rubber composition may be deteriorated, and when it is less than 60cc/100g, the reinforcing performance by carbon black as a filler may be disadvantageous.

Representative examples of the carbon black include N110, N121, N134, N220, N231, N234, N242, N293, N299, S315, N326, N330, N332, N339, N343, N347, N351, N358, N375, N539, N550, N582 , N630, N642, N650, N683, N754, N762, N765, N774, N787, N907, N908, N990 or N991.

According to an embodiment of the present invention, the carbon black may be N330.

According to one embodiment of the present invention, the carbon black content may be 40 to 55 parts by weight based on 100 parts by weight of the rubber composition. If the content of the carbon black is less than 40 parts by weight, the strength may not be satisfactory, and if it exceeds 55 parts by weight, the processability of the rubber composition may be disadvantageous.

The sidewall composition may optionally further include various additives such as an additional vulcanization agent, a vulcanization accelerator, a vulcanization accelerator, an anti-aging agent, an antioxidant, or a softener. Any of the various additives may be used as long as they are commonly used in the field to which the present invention belongs, and their content is not particularly limited as it depends on the blending ratio used in a typical tire belt rubber composition.

As the vulcanizing agent, a sulfur-based vulcanizing agent can be preferably used. The sulfur-based vulcanizing agents include inorganic vulcanizing agents such as powdered sulfur (S), insoluble sulfur (S), precipitated sulfur (S), and colloidal sulfur, and tetramethylthiuram disulfide (TMTD), tetraethyl Organic vulcanizing agents such as tetraethyltriuram disulfide (TETD) and dithiodimorpholine may be used. As the sulfur vulcanizing agent, specifically elemental sulfur or a vulcanizing agent that produces sulfur, for example, amine disulfide, polymer sulfur, or the like may be used.

It is preferable that the vulcanizing agent be included in an amount of 0.5 to 10.0 parts by weight based on 100 parts by weight of the raw rubber, as an appropriate vulcanizing effect, and that the raw rubber is less sensitive to heat and is chemically stable.

The vulcanization accelerator refers to an accelerator that accelerates the vulcanization rate or accelerates the delaying action in the initial vulcanization step.

The vulcanization accelerators include sulfenamide-based, thiazole-based, thiuram-based, thiourea-based, guanidine-based, dithiocarbamic acid-based, aldehyde-amine-based, aldehyde-ammonia-based, imidazoline-based, xanthate-based and these Any one selected from the group consisting of combinations may be used.

Examples of the sulfenamide-based vulcanization accelerator include N-cyclohexyl-2-benzothiazylsulfenamide (CBS), N-tert-butyl-2-benzothiazylsulfenamide (TBBS), and N,N-dicyclohexyl Any one selected from the group consisting of -2-benzothiazylsulfenamide, N-oxydiethylene-2-benzothiazylsulfenamide, N,N-diisopropyl-2-benzothiazolesulfenamide, and combinations thereof Sulfenamide-based compounds of can be used.

Examples of the thiazole-based vulcanization accelerator include 2-mercaptobenzothiazole (MBT), dibenzothiazyl disulfide (MBTS), sodium salt of 2-mercaptobenzothiazole, and zinc salt of 2-mercaptobenzothiazole. , Copper salt of 2-mercaptobenzothiazole, cyclohexylamine salt of 2-mercaptobenzothiazole, 2-(2,4-dinitrophenyl)mercaptobenzothiazole, 2-(2,6-di Any one thiazole-based compound selected from the group consisting of ethyl 4-morpholinothio)benzothiazole and combinations thereof may be used.

Examples of the thiuram-based vulcanization accelerator include tetramethyl thiuram disulfide (TMTD), tetraethyl thiuram disulfide, tetramethyl thiuram monosulfide, dipentamethylene thiuram disulfide, dipentamethylene thiuram monosulfide, dipentamethylene Thiuram tetrasulfide, dipentamethylene thiuram hexasulfide, tetrabutyl thiuram disulfide, pentamethylene thiuram tetrasulfide, and any one thiuram-based compound selected from the group consisting of a combination thereof may be used.

As the thiourea-based curing accelerator, for example, any one thiourea-based selected from the group consisting of thiacarbamide, diethylthiourea, dibutylthiourea, trimethylthiourea, diorthotolylthiourea, and combinations thereof Compounds can be used.

As the guanidine-based vulcanization accelerator, for example, any one guanidine-based compound selected from the group consisting of diphenylguanidine, diorthotolylguanidine, triphenylguanidine, orthotolylbiguanide, diphenylguanidine phthalate, and combinations thereof can be used. I can.

Examples of the dithiocarbamic acid-based vulcanization accelerator include zinc ethylphenyldithiocarbamate, zinc butylphenyldithiocarbamate, sodium dimethyldithiocarbamate, zinc dimethyldithiocarbamate, zinc diethyldithiocarbamate, Zinc dibutyldithiocarbamate, zinc diamyldithiocarbamate, zinc dipropyldithiocarbamate, complex salt of zinc pentamethylenedithiocarbamate and piperidine, zinc hexadecylisopropyldithiocarbamate, octadecyl Zinc isopropyldithiocarbamate, zinc dibenzyldithiocarbamate, sodium diethyldithiocarbamate, piperidine pentamethylenedithiocarbamate, selenium dimethyldithiocarbamate, tellurium diethyldithiocarbamate, dia Any one dithiocarbamic acid-based compound selected from the group consisting of cadmium mildithiocarbamate and combinations thereof may be used.

The aldehyde-amine-based or aldehyde-ammonia-based vulcanization accelerator is, for example, an aldehyde selected from the group consisting of acetaldehyde-aniline reactant, butylaldehyde-aniline condensate, hexamethylenetetramine, acetaldehyde-ammonia reactant, and combinations thereof. -Amine-based or aldehyde-ammonia-based compounds can be used.

As the imidazoline-based vulcanization accelerator, an imidazoline-based compound such as 2-mercaptoimidazoline may be used, and as the xanthate-based vulcanization accelerator, for example, a xanthate-based zinc dibutylxanthogenate or the like can be used. Compounds can be used.

The vulcanization accelerator may be included in an amount of 0.5 to 4.0 parts by weight based on 100 parts by weight of the raw rubber in order to maximize productivity and rubber properties through acceleration of the vulcanization speed.

The vulcanization accelerator aid is a blending agent used in combination with the vulcanization accelerator to complete the accelerating effect, and any one selected from the group consisting of inorganic vulcanization accelerators, organic vulcanization accelerators, and combinations thereof may be used. .

As the inorganic vulcanization accelerator, any one selected from the group consisting of zinc oxide (ZnO), zinc carbonate, magnesium oxide (MgO), lead oxide, potassium hydroxide, and combinations thereof can be used. have. The organic vulcanization accelerator is selected from the group consisting of stearic acid, zinc stearate, palmitic acid, linoleic acid, oleic acid, lauric acid, dibutyl ammonium oleate, derivatives thereof, and combinations thereof. You can use any one of them.

In particular, the zinc oxide and the stearic acid may be used together as the vulcanization accelerator, and in this case, the zinc oxide is dissolved in the stearic acid to form an effective complex with the vulcanization accelerator, thereby reducing advantageous sulfur during the vulcanization reaction. It facilitates the crosslinking reaction of the rubber by making it.

When the zinc oxide and the stearic acid are used together, it may be used in an amount of 1 to 10 parts by weight and 0.5 to 3 parts by weight based on 100 parts by weight of the raw rubber, respectively, to serve as an appropriate vulcanization accelerator. When the content of the zinc oxide and the stearic acid is less than the above range, the vulcanization rate may be slow and thus productivity may decrease, and when the content of the zinc oxide and the stearic acid is less than the above range, a scorch phenomenon may occur and physical properties may be deteriorated.

The softening agent is added to the rubber composition to facilitate processing by imparting plasticity to the rubber or to reduce the hardness of the vulcanized rubber, and refers to oils and other materials used during rubber compounding or rubber production. The softener means process oil or oils included in other rubber compositions. As the softener, any one selected from the group consisting of petroleum oils, vegetable oils, and combinations thereof may be used, but the present invention is not limited thereto.

As the petroleum oil, any one selected from the group consisting of paraffin oil, naphthenic oil, aromatic oil, and combinations thereof may be used.

Representative examples of the paraffinic oil include P-1, P-2, P-3, P-4, P-5, and P-6 of Michang Oil Co., Ltd., and a representative example of the naphthenic oil is Michang Oil. N-1, N-2, and N-3 of Co., Ltd. may be mentioned, and representative examples of the aromatic oil include A-2 and A-3 of Michang Oil Co., Ltd.

However, it is known that cancer-causing potential is high when the content of polycyclic aromatic hydrocarbons (hereinafter referred to as PAHs) contained in the aromatic oil is 3% by weight or more along with the recent increase in environmental awareness, TDAE ( Treated distillate aromatic extract) oil, mild extraction solvate (MES) oil, residual aromatic extract (RAE) oil, or heavy naphthenic oil may be preferably used.

In particular, the oil used as the emollient has a total content of PAHs of 3% by weight or less with respect to the entire oil, a kinematic viscosity of 95 or more (210 μ SUS), an aromatic component in the softener of 15 to 25% by weight, and a naphthenic component. TDAE oil having 27 to 37% by weight and 38 to 58% by weight of a paraffinic component may be preferably used.

The TDAE oil is advantageous in terms of environmental factors such as cancer-causing potential of PAHs while improving low-temperature characteristics and fuel economy performance of tires including the TDAE oil.

The plant oils include castor oil, cottonseed oil, linseed oil, canola oil, soybean oil, palm oil, palm oil, peanut oil, pine oil, pine tar, tall oil, corn oil, rice bran oil, safflower oil, sesame oil, olive oil, sunflower oil, palm kernel oil, camellia oil , Jojoba oil, macadamia nut oil, saflower oil, tung oil, and any one selected from the group consisting of a combination thereof may be used.

The softening agent is preferably used in an amount of 0 to 10 parts by weight based on 100 parts by weight of the raw rubber in that it improves the processability of the raw rubber.

The anti-aging agent is an additive used to stop a chain reaction in which the tire is automatically oxidized by oxygen. As the anti-aging agent, any one selected from the group consisting of amine-based, phenol-based, quinoline-based, imidazole-based, carbamic acid metal salts, waxes, and combinations thereof may be appropriately selected and used.

Examples of the amine-based anti-aging agent include N-phenyl-N'-(1,3-dimethyl)-p-phenylenediamine, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, N-phenyl-N'-isopropyl-p-phenylenediamine, N,N'-diphenyl-p-phenylenediamine, N,N'-diaryl-p-phenylenediamine, N-phenyl-N' -Any one selected from the group consisting of cyclohexyl p-phenylenediamine, N-phenyl-N'-octyl-p-phenylenediamine, and combinations thereof may be used. The phenolic antioxidants include phenolic 2,2'-methylene-bis(4-methyl-6-tert-butylphenol), 2,2'-isobutylidene-bis(4,6-dimethylphenol), 2 ,6-di-t-butyl-p-cresol, and any one selected from the group consisting of combinations thereof may be used. As the quinoline-based antioxidant, 2,2,4-trimethyl-1,2-dihydroquinoline and derivatives thereof may be used, and specifically, 6-ethoxy-2,2,4-trimethyl-1,2-di Consisting of hydroquinoline, 6-anilino-2,2,4-trimethyl-1,2-dihydroquinoline, 6-dodecyl-2,2,4-trimethyl-1,2-dihydroquinoline and combinations thereof Any one selected from the group can be used. As the wax, waxy hydrocarbon may be preferably used.

In addition to the anti-aging effect, the anti-aging agent must have a high solubility in rubber, low volatility, and inert to rubber, and not inhibit vulcanization, etc., 1 to 10 parts by weight of the raw rubber. It may be included in parts by weight.

A typical amount of the antioxidant may be included in, for example, about 1 to about 5 parts by weight. Representative antioxidants are, for example, diphenyl-p-phenylenediamine and others, but are not limited thereto.

On the other hand, the bead part 300 is provided at both ends of the sidewall 200 to surround the end of the cord paper, and the bead part 300 includes a bead core 500 including a ring-shaped steel wire.

A carcass layer 400 is positioned between the pair of left and right bead portions 300, and is bonded to the tire rubber sheet inside the tire to form the skeleton of the tire, and the carcass layer 400 is the bead core 500 ) It is winding up from the inside of the tire to the outside.

An inner liner 700 is positioned on one side of the inner side of the carcass layer 400 and serves to prevent air inside the tire from escaping to the outside.

The belt layer 600 may be positioned on the outer surface of the carcass layer 400 located on the tread portion 100 as a reinforcing layer that increases the elasticity of the tread and has maneuverability and stability.

A cap ply 800 including a hybrid cord may be disposed between the belt layer 600 and the tread portion 100. The cap ply 800 may suppress the flow of the belt layer 600 while driving to maintain the performance of the tire.

The sidewall composition may be prepared through a conventional two-step continuous manufacturing process. That is, during the first step of thermomechanical treatment or kneading at a maximum temperature ranging from 140 to 170°C, preferably at a high temperature of 150 to 160°C and the finishing step in which the crosslinking system is mixed, typically less than 110°C, for example It can be prepared in a suitable mixer by using the second step of mechanical treatment at a low temperature of 80 to 100 ℃, but is not limited thereto.

Tire according to another embodiment of the present invention includes the step of using the rubber composition for the side wall when forming a green tire. The method of shaping a green tire using the rubber composition for a sidewall can be applied to any method as long as it is conventionally used for manufacturing a tire, and a detailed description thereof will be omitted in the present specification.

4 illustrates a tire for a passenger car, but is not limited thereto, and may be a tire for a passenger car, a tire for a race, an airplane tire, a tire for agricultural machinery, an off-the-road tire, a truck tire, a bus tire, etc. have. In addition, the tire may be a radial tire or a bias tire, preferably a radial tire.

The present invention will be described in more detail through the following examples and comparative examples. However, the examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Comparative example 1 to 3 and Example 1, 2

The composition shown in Table 1 was added to the Banbari mixer to mix the rubber compositions of Examples and Comparative Examples.

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Natural rubber 60 60 60 60 60 Butadiene rubber 40 40 40 40 40 Carbon black ^{1 )} 38 38 38 38 38 Stearic acid 1.5 1.5 1.5 1.5 1.5 Zinc oxide 3.0 3.0 3.0 3.0 3.0 Wax ^{2 )} 2.0 2.0 2.0 2.0 2.0 sulfur 2.0 2.0 2.0 2.0 2.0 Accelerator ^{3 )} TBBS
1.0 TBBS
1.0 TBBS
1.0 TBBS
1.0 TBBS
1.0 Thiokabamoyl disthio compound (DBTH) ^{4 )} - 0.5 - 0.5 0.5 Biscitraconimide or bisitaconimide compounds ^{5 )} - - 0.5 1.0 2.0

1) Carbon Black: N330

2) PARAFFINE WAX

3) TBBS: (N-t-butylbenzothiazole-2-sulfenamide)

4) DBTH: 1,6-bis(N,N-dibenzylthiocarbamoyldithio)-hexane (1,6-bis(N,N-dibenzylthiocarbamoyldithio)-hexane)

5)1,1'-[1,3-phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione)(1,1'-[1,3-Phenylenebis(methylene) ]bis(3-methyl-1H-pyrrole-2,5-dione))

Evaluation example

<Basic property evaluation>

The specimens prepared in Comparative Examples 1 to 3 and Examples 1 and 2 were prepared in a vulcanizer at 180° C. for 10 minutes, and the basic physical properties were evaluated for the vulcanized specimens as follows, and the results are shown in Table 2 below. Shown in.

HD(hardness)

According to ASTM D2240-97, a single specimen was measured five times on a smooth surface with a thickness of 6 mm or more and a diameter of 10 mm or more using a Shore A type hardness tester, and the average value was determined.

Tensile properties

The measurement of the tensile strength of the crosslinked specimen was performed according to ASTM D412 using a tensile tester (INSTRON). The measurement specimen was manufactured in a sheet form using a hydraulic press and a dumbbell type using a specimen cutter. As for the test conditions, the tensile speed was measured at 500 mm/min at room temperature. Tensile strength (T/S) is a value representing the stress value until the test piece is broken in a tensile tester, and the force received per unit area was measured.

M-300 is a value representing the stress value at 300% elongation in a tensile tester, and the force received per unit area was measured.

Elongation

It is a value showing the strain value (strain rate) until the test piece breaks in the tensile tester.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 HD[hardness] 53 54 54 55 55 M-300(kgf/cm ² ) 44 67 53 54 54 Tensile strength (kgf/cm ² ) 188 172 180 203 195 Elongation(%) 770 570 780 770 700 Tear Strength 48 44 52 55 53 Hysteresis (60℃-tanδ) 0.190 0.123 0.180 0.170 0.160

Referring to Table 2, it can be seen that the tensile strength, elongation at break, and tear strength of Example 1 in the vulcanized rubber properties are similar to or superior to those of Comparative Examples 1 to 3. In the case of Example 1, it can be seen that hysteresis (60°C-tanδ) is superior to that of Comparative Example 1 in a state where the tensile strength, elongation and tear strength of Comparative Example 1 are maintained or improved.

10: tire
100: tread
200: side wall part
300: bead part
400: carcass layer
500: bead core
600: belt layer
700: inner liner

Claims (9)

As a tire sidewall rubber composition,
A compound containing a thiocarbamoyldithio group; And
Bis-citraconimide-based or bis-itaconimide-based compounds;
Tire sidewall rubber composition comprising. The tire sidewall rubber composition of claim 1, wherein the compound containing the thiocarbamoyldithio group is represented by the following Formula 1:
<Formula 1>

In Formula 1, Ar ₁ to Ar ₄ are each independently selected from a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, and a C ₁ -C ₆₀ heteroaryl group,
L ₁ to L ₅ are each independently selected from a C ₁ -C ₁₀ alkylene group, a C ₆ -C ₆₀ arylene group, and a C ₁ -C ₆₀ heteroarylene group,
l, m, n and o are each independently an integer of 0 to 3,
p is an integer from 1 to 10. The tire sidewall rubber composition according to claim 2, wherein L ₁ to L ₅ are each independently a C ₁ -C _{10 alkylene group.} The tire sidewall rubber composition of claim 2, wherein Ar ₁ to Ar ₄ are each independently a C ₆ -C _{60 aryl group.} The method of claim 2, wherein the compound of Formula 1 is 1,6-bis(N,N-dibenzylthiocarbamoyldithio)-hexane (1,6-bis(N,N-dibenzylthiocarbamoyldithio)-hexane) In tire sidewall rubber composition. The method of claim 1, wherein the bis-citraconimide-based or bis-itaconimide-based compound is
N,N'-ethylene-bis-citraconic imide; N,N'-hexamethylene-bis-citraconic imide; N,N'-tetramethylene-bis-citraconic imide; N,N'-2-methyl-pentamethylene-bis-citraconic imide; N,N'-(1,3-propylene)-bis-citraconic imide); N,N'-(3,3'-oxydipropylene)-bis-citraconimide (N,N'-(3,3'-oxydipropylene)-bis-citraconic imide); N,N'-(aminodiethylene)-bis-citraconimide (N,N'-(aminodiethylene)-bis-citraconic imide); N,N'-(aminodipropylene)-bis-citraconic imide); N,N'-(1,10-(4,7-dioxa)-decanediyl)-bis-citraconimide (N,N'-(l,10-(4,7-dioxa)-decanediyl) -bis-citraconic imide); N,N'-(4,4'-(di-(2-methyl cyclohexyl)methylene)-bis-citraconimide (N,N'-(4,4'-(di-(2-methyl cyclohexyl) )methylene)-bis-citraconic imide); N,N'-(4,4'-dicyclohexyl-isopropylene)-bis-citraconimide (N,N'-(4,4'-dicyclohexyl-isopropylene) )-bis-citraconic imide); N,N'-(4,4'-dicyclohexyloxy)-bis-citraconimide (N,N'-(4,4'-dicyclohexyloxy)-bis-citraconic imide); N,N'-(4,4'-dicyclohexylene)-bis-citraconimide (N,N'-(4,4'-dicyclohexylene)-bis-citraconic imide); N,N '-o-phenylene-bis-citraconimide (N,N'-o-phenylene-bis-citraconic imide); N,N'-phenylene-bis-citraconimide (N,N'-phenylene -bis-citraconic imide); N,N'-m-phenylene-bis-itaconic imide (N,N'-m-phenylene-bis-itaconic imide); N,N'-p-phenylene-bis -Citraconimide (N,N'-p-phenylene-bis-citraconic imide); N,N'-(5-chloro-1,3-phenylene)-bis-citraconimide (N,N' -(5-chloro-l,3-phenylene)-bis-citraconic imide); N,N'-(5-hydroxy-1,3-phenylene)-bis-citraconimide (N,N'- (5-hydroxy-l,3-phenylene)-bis-citraconic imide); N,N'-(5-methoxy-1,3-phenylene)-bis-citraconimide (N,N'-( 5-methoxy-1,3-phenylene)-bis-citraconic imide); N,N'-(α,α'-(1,3-dimethyl phenylene))-bis-citraconimide (N,N'-(α,α'-(1,3-dimethyl phenylene))-bis-citraconic imide); N,N'-(4,4'-(l,10-decanediol-dibenzo 8))-bis-citraconimide (N,N'-(4,4'-(l,10-decanediol-dibenzoate))-bis-citraconic imide); N,N'-(4,4'-diphenyl-bisphenol-A-ether)-bis-citraconimide (N,N'-(4,4'-diphenyl-bisphenol-A-ether)-bis- citraconic imide); N,N'-(4,4'-biphenylene)-bis-citraconimide (N,N'-(4,4'-biphenylene)-bis-citraconic imide); N,N'-(4,4'-diphenylmethylene)-bis-citraconimide (N,N'-(4,4'-diphenylmethylene)-bis-citraconic imide); N,N'-(4,4'-diphenylmethylene)-bis-itaconimide (N,N'-(4,4'-diphenylmethylene)-bis-itaconic imide); N,N'-m-xylylene-bis-citraconic imide; N,N'-(4,4'-diphenyl isopropylene)-bis-citraconimide (N,N'-(4,4'-diphenyl isopropylene)-bis-citraconic imide); N,N'-(3,3'-dimethyl-4,4'-biphenylene)-bis-citraconimide (N,N'-(3,3'-dimethyl-4,4'-biphenylene) -bis-citraconic imide): N,N'-(3,3'-dichloro-4,4'-biphenylene-bis-citraconimide (N,N'-(3,3'-dichloro-4 ,4'-biphenylene-bis-citraconic imide); N,N'-(3,3'-difluoro-4,4'-biphenylene)-bis-citraconimide (N,N'-( 3,3'-difluoro-4,4'-biphenylene)-bis-citraconic imide); N,N'-(4,4'-oxydiphenylene)-bis-citraconimide (N,N'- (4,4'-oxydiphenylene)-bis-citraconic imide); N,N'-(4,4'-diphenylsulfone)-bis-citraconimide (N,N'-(4,4'-diphenylsulfone) )-bis-citraconic imide); N,N'-(4,4'-diphenylcarboxy)-bis-citraconimide (N,N'-(4,4'-diphenyl carboxy)-bis-citraconic imide ); N,N'-(4,4'-(1,1-diphenyl propylene))-bis-citraconimide (N,N'-(4,4'-(1,1-diphenyl propylene)) )-bis-citraconic imide); N,N'-3,5-(1,2,4-triazole)-bis-citraconimide (N,N'-3,5-(1,2,4 -triazole)-bis-citraconic imide); N,N'-dodecamethylene-bis-citraconic imide; N,N'-(2,2,4 -Trimethylhexamethylene)-bis-citraconimide (N,N'-(2,2,4-trimethylhexamethylene)-bis-citraconic imide); N,N'-(1,11-(4,8-di Oxa-undecanediyl))-bis-citraconimide (N,N'-(1,11-(4,8-dioxa-undecanediyl))-bis-citraconic imide); N,N'-(4, 4'-benzophenonediyl)-bis-sheet Raconimide (N,N'-(4,4'-benzophenonediyl)-bis-citraconic imide); N,N'-(1,4-anthraquinonediyl)-bis-citraconimide (N,N'-(1,4-anthraquinonediyl)-bis-citraconic imide); N,N'-(1,3-naphthalenediyl)-bis-citraconic imide; N,N'-(1,4-naphthalenediyl)-bis-citraconic imide; N,N'-(1,5-naphthalenediyl)-bis-citraconimide (N,N'-(1,5-naphthalenediyl)-bis-citraconic imide); N,N'-(1,3-cyclohexylene)-bis-citraconic imide; N,N'-(1,4-cyclohexylene)-bis-citraconic imide; N,N'-(5-methyl-1,3-phenylene)-bis-citraconimide (N,N'-(5-methyl-1,3-phenylene)-bis-citraconic imide); N,N'-(α,α'-(1,3-dimethylcyclohexylene))-bis-citraconimide (N,N'-(α,α'-(1,3-dimethylcyclohexylene))- bis-citraconic imide); N,N'-(α,3-(1,1,5,5-tetramethyl-cyclohexylene))-bis-citraconimide (N,N'-(α,3-(1,1, 5,5-tetramethyl-cyclohexylene))-bis-citraconic imide); N,N'-(isophoronyl)-bis-citraconic imide; N,N'-(dimethyltricyclododecylene)-bis-citraconimide (N,N'-(dimethyltricyclododecylene)-bis-citraconic imide); N,N'-octamethylene-bis-citraconic imide; N,N'-(1,2-propylene)-bis-citraconimide (N,N'-(1,2-propylene)-bis-citraconic imide); N,N'-decamethylene-bis-citraconic imide; N,N'-heptamethylene-bis-citraconic imide; N,N'-(5-bromo-1,3-phenylene)-bis-citraconimide (N,N'-(5-bromo-1,3-phenylene)-bis-citraconic imide); N,N'-(1,13-(7-aza-tridecanediyl))-bis-citraconimide (N,N'-(1,13-(7-aza-tridecanediyl))-bis-citraconic imide); N,N'-(l,7-(4-aza-heptanediyl))-bis-citraconimide (N,N'-(l,7-(4-aza-heptanediyl)))-bis-citraconic imide ); N,N'-(1,11-(3,6,9-triaza-undecandiyl))-bis-citraconimide (N,N'-(1,11-(3,6,9- triaza-undecanediyl))-bis-citraconic imide); N,N'-(1,8-(3,6-diaza-octanediyl)-bis-citraconimide (N,N'-(1,8-(3,6-diaza-octanediyl)-bis -citraconic imide); N,N'-(N,N'-di-2-ethylpiperazinyl)-bis-citraconimide (N,N'-(N,N'-di-2-ethylpiperazinyl) -bis-citraconic imide); N,N'-(2-hydroxy-1,3-propylene)-bis-citraconimide (N,N'-(2-hydroxy-1,3-propylene)-bis -citraconic imide); N,N',N"-(2,4,6-trihexamethylene-isocyanuratetriyl)-tris-citraconimide (N,N',N"-(2, 4,6-trihexamethylene-isocyanuratetriyl)-tris-citraconic imide); N,N'-(3,5-benzoicaciddiyl)-bis-citraconimide (N,N'-(3,5-benzoicaciddiyl)-bis -citraconic imide); N,N'-pentamethylene-bis-citraconimide (N,N'-pentamethylene-bis-citraconic imide); N,N'-undeca methylene-bis-citraconimide (N ,N'-undecamethylene-bis-citraconic imide); N,N'-(4-(N-methylene-citraconimide)-octamethylene-bis-citraconimide (N,N'-(4-( N-methylene-citraconic imide)-octamethylene-bis-citraconic imide); N,N'-nonamethylene-bis-citraconic imide); N,N'-( 2-butyl-2-ethylpentamethylene)-bis-citraconimide (N,N'-(2-butyl-2-ethylpentamethylene)-bis-citraconic imide); N,N'-polytetrahydrofuryl-bis -Citraconimide (N,N'-polytetrahydrofuryl-bis-citraconic imide); And 1,1'-[1,3-phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5 -Dion)( Tire sidewall rubber composition selected from 1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione)). The tire sidewall rubber composition of claim 1, wherein the rubber composition comprises 0.1 to 0.5 parts by weight of a compound containing a thiocarbamoyldithio group based on 100 parts by weight of the raw rubber. The tire according to claim 1, wherein the rubber composition comprises 0.1 to 5.0 parts by weight of a bis-citraconimide-based or bis-itaconimide-based compound based on 100 parts by weight of the raw rubber. Sidewall rubber composition. A tire comprising the tire sidewall rubber composition of any one of claims 1 to 8.

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