WO1997024383A1 - Caoutchouc dienique, processus de preparation et composition le contenant - Google Patents
Caoutchouc dienique, processus de preparation et composition le contenant Download PDFInfo
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- WO1997024383A1 WO1997024383A1 PCT/JP1996/003706 JP9603706W WO9724383A1 WO 1997024383 A1 WO1997024383 A1 WO 1997024383A1 JP 9603706 W JP9603706 W JP 9603706W WO 9724383 A1 WO9724383 A1 WO 9724383A1
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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
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to a gen-based rubber which is excellent in processability and gives a vulcanized rubber having improved heat build-up, tensile strength and abrasion resistance when silica is blended as a reinforcing agent. And a rubber composition comprising a rubber component containing the gen-based rubber and a reinforcing agent.
- a gen-based rubber obtained by an emulsion polymerization method includes a gen-based rubber having a tertiary amino group introduced therein (Japanese Patent Application Laid-Open No. 1-101344), and a gen-based rubber obtained by an anion polymerization method.
- alkylsilyl groups Japanese Patent Application Laid-Open No. 1-188501
- halogenated silyl groups Japanese Patent Application Laid-Open No. 5-23086
- substituted amino groups Japanese Patent Application Laid-Open No. Jen-based rubbers which have been introduced, for example, have been proposed.
- An object of the present invention is to provide a vulcanized rubber having excellent processability, low heat build-up when silica is blended as a reinforcing agent, and exhibiting tensile strength and abrasion resistance equivalent to those of a carbon black compound. To provide a gen-based rubber to be provided, and a method for producing the same.
- Another object of the present invention is to provide a rubber composition comprising a gen-based rubber and a reinforcing agent, which gives a vulcanized rubber having improved heat build-up, tensile strength, abrasion resistance and workability. is there.
- the present inventors have conducted intensive studies to overcome the problems of the prior art, and as a result, as a rubber component, an amino group-containing vinyl monomer and a hydroxy group-containing vinyl monomer were used together.
- a gen-based rubber obtained as a polymerization component By using a gen-based rubber obtained as a polymerization component, it was found that a vulcanized rubber having improved heat build-up, tensile strength and abrasion resistance was provided, and a rubber composition excellent in processability was obtained.
- the present invention has been completed.
- 45 to 99.9% by weight of a conjugated gen unit 45 to 99.9% by weight of a conjugated gen unit, 0.05 to 20% by weight of an amino group-containing vinyl monomer unit, and 0.5 to 20% by weight of a hydroxyl group-containing vinyl monomer unit.
- the gen is characterized by having a Mooney viscosity of 10 to 200 (ML1 + 4 , 100 ° C) consisting of 05 to 20% by weight and 0 to 50% by weight of other copolymerizable monomer units.
- System rubber is provided.
- the gen-based rubber further comprises copolymerizing a conjugated gen, an amino-containing vinyl-based monomer, a hydroxyl-containing vinyl-based monomer, and another copolymerizable monomer.
- a rubber composition comprising a rubber component containing the above-mentioned gen-based rubber and a reinforcing agent.
- the gen-based rubber (i) of the present invention comprises a conjugated gen unit, an amino group-containing vinyl monomer unit and a hydroxyl group-containing vinyl monomer unit as essential components, and may be optionally copolymerized with other components. Containing various monomer units.
- Examples of the conjugated gen include 1,3-butadiene, 2-methyl-1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-chloro-1,3-butadiene, 1,3-pentadiene, and the like. Is mentioned. Among these, 1,3-butadiene, 2-methyl-1,3-butadiene and the like are preferable, and 1.3-butadiene is more preferable. These conjugated gens can be used alone or in combination of two or more.
- the amino group-containing vinyl monomer includes a polymer having at least one amino group selected from primary, secondary and tertiary amino groups in one molecule. Monomer. A tertiary amino group-containing vinyl monomer is particularly preferred.
- Examples of the primary amino group-containing vinyl monomer include acrylamide, methacrylamide, p-aminostyrene, aminomethyl (meth) acrylate, and aminoethyl (meth) acrylate. , Aminopropyl (meta) acrylate, aminobutyl (meth) acrylate, and the like.
- Examples of the secondary amino group-containing vinyl monomer include, for example, anilinostyrenes disclosed in JP-A-61-135555; 56, and N-methyl (meth) acrylyl amide, N-ethyl (meth) acrylyl amide, N-methylol acrylyl amide, N- (4-anilinophenyl) ) N-monosubstituted (meta) acrylamides such as methacrylamide: and the like.
- Examples of the tertiary amino group-containing vinyl monomer include N, N-disubstituted aminoalkyl acrylate, N, N-disubstituted aminoalkyl acrylamide, N, N-di-substituted Examples thereof include an amino aromatic vinyl compound and a vinyl compound having a pyridyl group.
- N, N-disubstituted aminoacrylates include N, N-dimethylaminomethyl (meth) acrylate, N, N-dimethylaminoethyl (meth) acrylate, N, N— Dimethylaminopropyl (meth) acrylate, N, N-dimethylaminobutyl (meth) acrylate, N, N-Jetylaminoethyl (meta) acrylate, N, N-Jetillaminob Mouth pill (meta) acrylate, N, N—Jetylaminobutyl Evening) acrylate, N-methyl-N-ethylaminoethyl (meth) acrylate, N.N-dipropylaminoethyl (meth) acrylate, N, N-dibutylaminoethyl (meth) ethyl Acrylate, N, N-dibutylaminopropyl (meth)
- N, N-disubstituted aminoalkylacrylamides include N, N-dimethylaminomethyl (meth) acrylamide, N, N-dimethylaminoethyl (meth) acrylamide, N, N-dimethylaminopropyl ( (Meth) acrylamide, N, N-dimethylaminobutyl (meth) acrylamide, N, N-getylaminoethyl (meth) acrylamide, N, N-getylaminopropyl (meth) acrylamide, N , N-Diethylaminobutyl (meth) acrylamide, N-methyl-N-ethylethylaminoethyl (meta) acrylamide, N.N-Dipropylaminoethyl (meth) acrylamide, N, N-dibutylaminoethyl ( Acrylamide, N, N-dibutylaminopropyl (meth)
- N.N-disubstituted amino aromatic vinyl compounds include N.N-dimethylaminoethylstyrene, N, N-getylaminoethylstyrene, N, N-dipropylaminoethylstyrene, N, N And styrene derivatives such as dioctylaminoethylstyrene.
- Examples of the vinyl compound having a pyridyl group include 2-vinylpyridin, 4-vinylpyridine, 5-methyl-12-vinylpyridine, and 5-ethyl-2-vinylpyridine. Among these, 2-vinyl pyridine, 4-vinyl pyridine and the like are preferable.
- amino group-containing vinyl monomers can be used alone or in combination of two or more.
- Examples of the hydroxyl group-containing vinyl monomer include a polymerizable monomer having at least one primary, secondary or tertiary hydroxyl group in one molecule.
- Examples of such a vinyl monomer having a hydroxyl group include unsaturated carboxylic acid monomers having a hydroxyl group, vinyl ether monomers having a hydroxyl group, and vinyl ketone monomers having a hydroxyl group.
- a hydroxyl group-containing unsaturated carboxylic acid-based monomer is preferable.
- Examples of the unsaturated carboxylic acid monomer containing a hydroxyl group include acrylic acid, methacrylic acid, and itacone.
- Esters such as esters, amides and anhydrides of acids, fumaric acid, maleic acid and the like, preferably esters.
- These vinyl monomers having a hydroxyl group are used alone or in combination of two or more.
- hydroxyl group-containing vinyl monomer examples include, for example, hydroxymethyl (meth) acrylate, 2-hydroxyshethyl (meth) acrylate, and 2-hydroxypropyl (methyl) acrylate. Evening) acrylate, 3-hydroxypropyl (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, 3-hydroxy1-2-hydroxypropyl ( (Meth) acrylate, glycerol mono (meth) acrylate, hydroxybutyl (meth) acrylate, 2-chloro-1- (3-hydroxypropyl) (meth) acrylate, hydroxyhexyl (Meth) acrylate, hydroxyoctyl (meth) acrylate, hydroxymethyl (meth) acrylamide, 2-hydroxypropyl Ropyr (meth) acrylyl amide, 3-hydroxypropyl (meth) acrylamide, di- (ethylene glycol) itaconate, di- (propylene glycol) it
- hydroxymethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl pill (meth) acrylate, and 3-hydroxypropyl (Meta) acrylate, 3-Phenokin 2-hydroquinopropyl (meta) acrylate Glycerol mono (meth) acrylate, hydroxyquinbutyl (meth) acrylate, hydroxyhexyl (meth) acrylate, hydroxyoctyl (meth) acrylate, hydroxymethyl (meth) acrylamide, 2-hydroxypropyl ( (Meth) acrylamide, 3-hydroxypropyl (meth) acrylamide and the like are preferred.
- hydroxyl group-containing vinyl monomers can be used alone or in combination of two or more.
- the other copolymerizable monomer is not particularly limited as long as it does not impair the object of the present invention, but when the balance between heat generation and jet skid resistance is emphasized, aromatic vinyl is usually used. Is used.
- aromatic vinyl an aromatic vinyl compound not having an amino group or a hydroxyl group is used.
- styrene ⁇ -methylstyrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, 2,4—
- examples include diisopropyl pyrstyrene, 2,4-dimethylstyrene, 4-t-butylstyrene, 5-t-butyl_2-2-methylstyrene, monochlorostyrene, dichlorostyrene, and monofluorostyrene. Of these, styrene is preferred.
- Two or more kinds can be used in combination.
- the presence or absence of other copolymerizable monomer units, particularly aromatic vinyl units, in the copolymer can be appropriately selected according to the purpose of use.
- a copolymer of a conjugated gen, a vinyl monomer having an amino group and a vinyl monomer having a hydroxyl group is used.
- the content of each monomer is 60 to 99.9 %, Preferably 70 to 99.8% by weight, more preferably 80 to 99.5% by weight, wherein the amino group-containing vinyl monomer unit is 0.05 to 20% by weight, preferably 0.1.
- the hydroxyl-containing vinyl monomer unit is 0.05 to 20% by weight, preferably 0.1 to 15% by weight. More preferably, it is in the range of 0.25-10% by weight.
- the content of each monomer in the copolymer is such that the conjugated gen unit is 45 to 99.9% by weight, preferably 50 to 89.8% by weight, more preferably 55 to 84.5% by weight.
- the amino group-containing vinyl monomer unit is in the range of 0.05 to 20% by weight, preferably 0.1 to 15% by weight, more preferably 0.25 to 10% by weight.
- the vinyl monomer unit is in the range of 0.05 to 20% by weight, preferably 0.1 to 15% by weight, and more preferably 0.25 to 10% by weight; (Preferably aromatic vinyl)
- the unit ranges from 5 to 50% by weight, preferably from 10 to 45% by weight, more preferably from 15 to 40% by weight.
- the content of the amino group-containing vinyl monomer or the hydroxyl group-containing vinyl monomer is too small, the properties such as heat generation, tensile strength, and abrasion resistance are not sufficiently improved. If it is too high, the processability will deteriorate, and the heat buildup, tensile strength and Improvements in wear resistance and the like are not sufficient. If the content of aromatic vinyl is excessively large, the improvement of heat buildup is not sufficient.
- the ratio to the body unit is appropriately selected according to the purpose.
- an amino group-containing vinyl monomer unit: a hydroxyl group-containing vinyl monomer unit 5:95 to 90: 1 0, preferably 10:90 to 80:20, more preferably 15:85 to 70:30 (weight ratio).
- the content of both monomer units is within this range, all of the properties of heat build-up, tensile strength, abrasion resistance and workability are highly balanced, which is preferable.
- a vinyl monomer having both an amino group and a hydroxyl group in a molecule (hereinafter, referred to as a “(amino group + hydroxyl group) -containing vinyl monomer”).
- (amino group + hydroxyl group) -containing vinyl monomer examples include 2-dimethylamino-1-hydroxyhexyl (meth) acrylate, 1-dimethylamino-12-hydroxyxethyl (meth) acrylate, and 3-dimethylamine.
- the content of the (amino group + hydroxyl group) -containing vinyl monomer in the copolymer is determined by the total amount of the aforementioned amino group-containing vinyl monomer and hydroxy group-containing vinyl monomer. Is within the range.
- the viscosity of the gen-based rubber (i) of the present invention (ML 1 +4 , 100 ° C.) is in the range of 10 to 200, preferably 20 to 150, more preferably 25 to 120. If the Mooney viscosity is too low, heat build-up and abrasion resistance are poor. On the other hand, if the Mooney viscosity is too high, workability is poor.
- the microstructure of the conjugated gen bond unit portion of the gen-based rubber (i) of the present invention is not particularly limited, and is appropriately selected depending on the purpose of use.
- the ratio of vinyl bonds (1,2-vinyl bonds and 3,4-vinyl bonds) of the conjugated gen bond unit is usually 5 to 95%, preferably 7 to 50%, and more preferably 10 to 30%. Range.
- the vinyl bond amount of the conjugated gen is in this range, the heat generation characteristic and the abrasion resistance are highly balanced, which is preferable.
- the bond is a 1,4-bond, and may be a 1,4-cis bond or a 1,4-trans bond.
- the method for producing the gen-based rubber (i) of the present invention is not particularly limited, and examples thereof include a conjugated gen, an amino group-containing vinyl monomer, a hydroxyl group-containing vinyl monomer, and other A method (P) of copolymerizing a copolymerizable monomer is exemplified.
- the vinyl monomer containing an amino group may contain a hydroxyl group, and the vinyl monomer containing a hydroxyl group can contain an amino group.
- a method of copolymerizing a conjugated gen, a vinyl monomer containing (amino group + hydroxyl group) and another copolymerizable monomer as required (P-a), a conjugated gen A method of copolymerizing a vinyl monomer containing an amino group that does not contain a droxyl group, a vinyl monomer containing an (amino group + a hydroxyl group with a hydroxyl group), and other copolymerizable monomers (Pb ), Conjugated gen, amino group-free hydroxy
- P-c copolymerizing a vinyl monomer containing a sil group
- the polymerization method is not particularly limited, but usually an emulsion polymerization method is employed.
- an ordinary emulsion polymerization method may be used.
- the amount of each monomer used is appropriately selected so as to be the content of each monomer of the gen-based rubber (i).
- the emulsifier for example, a long-chain fatty acid salt having 10 or more carbon atoms and a rosin acid salt are used. Specifically, potassium salts or sodium salts of cabric acid, lauric acid, myristic acid, palmitic acid, oleic acid, stearic acid and the like are exemplified.
- radical polymerization initiator examples include, for example, ammonium persulfate, a persulfate such as potassium persulfate; a combination of ammonium persulfate and ferric sulfate; a combination of an organic peroxide and ferric sulfate; And a redox initiator such as a combination of hydrogen peroxide and ferric sulfate; and the like.
- a chain transfer agent can be added.
- the chain transfer agent include mercaptans such as t-dodecylmercaptan, n-dodecylmercaptan, carbon tetrachloride, and thioglycol. Lulic acid, diterpene, terpinolene, a-terpinene and the like can be used.
- the temperature of the emulsion polymerization can be appropriately selected depending on the kind of the radical polymerization initiator to be used, but is usually 0 to 100 ° C, preferably 0 to 60 ° C.
- the polymerization mode may be any of continuous polymerization, batch polymerization and the like.
- the polymerization conversion is preferably suppressed to 80% or less, and particularly preferably, the polymerization is stopped within the range of 40 to 70%.
- the termination of the polymerization reaction is usually performed by adding a polymerization terminator to the polymerization system when a predetermined conversion is reached.
- the polymerization terminator include amide-based compounds such as getyl hydroxysylamine-hydroxylamine, quinone-based compounds such as hydroquinone and benzoquinone, sodium nitrite, sodium nitrite, and the like. Compounds such as carbamate are used.
- the above-mentioned gen-based rubber (i) Included are used.
- the proportion of the gen-based rubber (i) in the rubber component is appropriately selected according to the purpose of use, but is usually at least 10% by weight, preferably 15 to 100% by weight, more preferably 20 to 100% by weight, Preferably it is 25-100% by weight. If the proportion of the gen-based rubber (i) of the present invention in the rubber component is too small, the effect of the modification is not sufficient.
- the other rubber that can be used in combination is not particularly limited, but a gen-based rubber is usually used.
- the gen-based rubber include natural rubber (NR), polyisoprene rubber (IR), emulsion-polymerized styrene-butadiene copolymer rubber (SBR), solution-polymerized random SBR (bonded styrene 5 to 50% by weight, butadiene-bonded unit) 1,2-vinyl bond amount of the part 10-80%), high trans SBR (1,4-trans bond amount 70-95% of the butadiene bond unit part), low cis polybutadiene rubber (BR), high cis BR, high Trans BR (1,4-trans bond weight 70-95% of butadiene bond unit), styrene-isoprene copolymer rubber (SIR), butadiene-isoprene copolymer rubber, solution-polymerized random styrene-butadiene-isoprene copolymer
- the reinforcing agent is not particularly limited, but for example, silica or carbon black can be used.
- the silica is not particularly limited, and examples thereof include dry-type white carbon, wet-type white carbon, colloidal silica, and precipitated silica disclosed in JP-A-62-262838. Among these, wet-process white carbon containing hydrous gay acid as a main component is particularly preferred. These silicas can be used alone or in combination of two or more.
- a nitrogen absorption specific surface area (B ET method) 50-400111 2 preferably from 100 to 25,001 2 8, more preferably in the range of 120 ⁇ 190m 2 / g, Improvements in strength, abrasion resistance, heat generation, etc. are sufficiently achieved.
- the nitrogen adsorption specific surface area is a value measured by the BET method according to ASTM D 3037-81.
- the carbon black is not particularly limited. For example, furnace black, acetylene black, thermal black, channel black, graphite, and the like can be used.
- furnace black is particularly preferred, and specific examples thereof include SAF, ISAF, ISAF-HS, ISAF-LS, IISAF-HS, HAF, HAF-HS, HAF-LS, FEF and the like. And various grades such as These carbon blacks can be used alone or in combination of two or more.
- the specific surface area of carbon black is not particularly limited, a nitrogen absorption specific surface area (N 2 SA), 5 to 20 Orr ⁇ Zg preferably 50 to 150 meters 2 / g, more preferably from 80 ⁇ 130m 2 / g When the tensile strength Degree Abrasion resistance is improved at a high level.
- the DBP adsorption amount of carbon black is not particularly limited, but when it is in the range of 5 to 30 Om1Z100 g, preferably 50 to 200 mlZ100 g, more preferably 80 to 160 m1 / 100 g. It is preferable because the tensile strength is improved at a high level of abrasion resistance.
- the mixing ratio of the reinforcing agent is 10 to 200 parts by weight, preferably 20 to 150 parts by weight, more preferably 30 to 120 parts by weight, per 100 parts by weight of the rubber component.
- silica alone or a combination of silica and carbon black as a reinforcing agent.
- the mixing ratio is appropriately selected according to the application and purpose.
- silica: carbon black 10:90 to 99: 1, preferably 30:70 to 95: 5. More preferably, the ratio is 50:50 to 90:10 (overlay ratio).
- the silane coupling agent is not particularly limited, but may be, for example, vinyl. Trichlorosilane, vinyltriethoxyquinsilane, vinyltris (/?-Methoxyethoxyquin) silane, ⁇ _ (3,4-epoxycyclohexyl) monoethyltrimethoxysilane, 7-glycidoxypropyltrimethoxysilane, ⁇ -methacryloxy Propyltrimethoxysilane, ⁇ — (aminomin) 1-aminopropyltrimethoxysilane, / — / 3 (aminoethyl) ⁇ -aminopropylmethyldimethoxysilane, ⁇ -phenyl 7-aminopropyl Japanese Patent Application Laid-Open No.
- silane coupling agents can be used alone or in combination of two or more.
- the mixing ratio of the silane coupling agent is usually 0.1 to 30 parts by weight, preferably 1 to 20 parts by weight, more preferably 2 to 10 parts by weight, per 100 parts by weight of silica.
- C rubber composition preferably 1 to 20 parts by weight, more preferably 2 to 10 parts by weight, per 100 parts by weight of silica.
- the rubber composition of the present invention may contain, in addition to the above components, vulcanizing agents, vulcanization accelerators, vulcanizing activators, antioxidants, activators, plasticizers, lubricants, fillers, etc.
- Other compounding agents can be contained in required amounts.
- the vulcanizing agent is not particularly limited, but includes, for example, sulfur such as powdered sulfur, precipitated sulfur, colloidal sulfur, insoluble sulfur, and highly dispersible sulfur; Sulfur halides such as sulfur and sulfur dichloride; organic peroxides such as diculmi peroxide, di-tert-butyl peroxide; p-quinondioxime, p .'- dibenzoylquinondioxime Quinone dioxime; organic polyvalent amide compounds such as triethylenetetramine, hexamethylenediamine potassium salt, 4,4'-methylenebis-o-chloroaniline; alkylphenol resin having a methylol group; And the like.
- sulfur is preferred, and powdered sulfur is particularly preferred.
- These vulcanizing agents may be used alone or in combination of two or more.
- the compounding ratio of the vulcanizing agent is usually 0.1 to 15 parts by weight, preferably 0.3 to 10 parts by weight, more preferably 0.5 to 5 parts by weight per 100 parts by weight of the rubber component. Range. When the mixing ratio of the vulcanizing agent is in this range, it is particularly preferable because it has excellent tensile strength / abrasion resistance and also excellent properties such as heat resistance and residual strain.
- vulcanization accelerator examples include N-cyclohexyl-12-benzothiazolesulfonamide, Nt-butyl-12-benzothiazolesulfenamide, N-oxyethylene-12-benzothiazolesulfuramide Sulfamide amide-based vulcanization accelerators such as amides, N-oxyethylene-12-benzothiazolesulfenamide, N, N'-diisopropyl-12-benzothiazolesulfenamide; diphenylguanidine Guanidine-based vulcanization accelerators such as thiocarbalide, ditolyltrithiourea, ethylentioleurea, getylthiourea, trimethylthiourea, etc .; Vulcanization accelerator; 2-mercaptobenzothiazole, dibe Benzothiazyl disulfide, 2-mercaptobenzothiazole zinc salt, 2-mercaptobenzothiazole sodium salt, 2-mercaptobenzothiazolecyclohex
- Thiuram-based vulcanization accelerators such as: sodium dimethyldithiocyanate, sodium getyldithiol, sodium di-n-butyldithiolate, sodium dimethyldithiate, lead dimethyldithiate, dimethyldithiate Zinc rubamate, Jethyl dithio Zinc zinc rubamate, di-n-butyldithio zinc zinc rubamate, zinc pentamethylenedithiocarbamate, zinc ethyl rubimate zinc zinc rubimate, getyldithi sodium tellurium rutile, dimethyldithio potassium Such as selenium acid, selenium diethyldithiocarbamate, copper dimethyldithiocarbamate, iron dimethyldithiolbamate, getylamine dimethyldithiocarbamate, pyridin pentamethylenedithiocarbamate, and pipecoline methylpentamethylenedithiocarbamate.
- Vulcanization accelerators such as dithiocarbamic acid-based vulcanization accelerators; xanthate-based vulcanization accelerators such as sodium isopropylxanthate, zinc isopropylxanthate, zinc butylxanthate and the like.
- vulcanization accelerators may be used alone or in combination of two or more, and those containing at least a sulfenamide vulcanization accelerator are particularly preferred.
- the mixing ratio of the vulcanization accelerator is 100 parts by weight of the rubber component. In general, the amount is in the range of 0.1 to 15 parts by weight, preferably 0.3 to 10 parts by weight, and more preferably 0.5 to 5 parts by weight.
- the vulcanization activator is not particularly limited.
- higher fatty acids such as stearic acid and zinc oxide can be used.
- zinc oxide for example, it is preferable to use those having a high surface activity and a particle size of 5 zm or less, and specific examples thereof include a particle size of 0.05 to 0.
- a zinc oxide surface-treated with an amine-based dispersant or wetting agent can be used as the zinc oxide.
- vulcanization activators can be used alone or in combination of two or more.
- the mixing ratio of the vulcanization activator is appropriately selected depending on the type of the vulcanization activator. For example, in the case of a higher fatty acid, it is usually 0.05 to 15 parts by weight, preferably 0.1 to 10 parts by weight, more preferably 0.5 to 5 parts by weight, per 100 parts by weight of the rubber component. Also, for example, in the case of zinc oxide, it is usually 0.05 to 10 parts by weight, preferably 0.1 to 5 parts by weight, more preferably 0.5 to 2 parts by weight per 100 parts by weight of the rubber component. is there. When the mixing ratio of zinc oxide is within this range, properties such as workability, tensile strength, and wear resistance are highly balanced and suitable.
- Examples of other compounding agents include, for example, a coupling agent other than a silane coupling agent; an activator such as dimethylene glycol, polyethylene glycol, and silicone oil; a filler such as calcium carbonate, talc, and clay. Such as process oils and plastics.
- the rubber composition of the present invention can be obtained by kneading each component according to a conventional method.
- compounding agents excluding vulcanizing agents and vulcanization accelerators and rubber components The rubber composition can be obtained by adding a vulcanizing agent and a vulcanization accelerator to the mixture and kneading the mixture.
- the compounding agent excluding the vulcanizing agent and the vulcanization accelerator and the rubber component are usually used at a temperature of 80 to 200 ° C, preferably 100 to 190 ° C, more preferably 140 to 180 ° C.
- the mixture is usually mixed at a temperature of at least 30 seconds, preferably 1 to 30 minutes, and then the mixture is cooled usually to 100 ° C or less, preferably from room temperature to 80 ° C, and then vulcanizing agent and vulcanizing agent are added.
- the rubber composition of the present invention can be obtained by adding an accelerator to the mixture and kneading the mixture.
- the vulcanized rubber can be obtained by press-vulcanizing this rubber composition at a temperature of usually 120 to 200 ° C, preferably 140 to 180 ° C.
- the amount of bound styrene in the polymer was measured according to JIS K63.83 (refractive index method).
- the amount of amino group-containing monomer in the polymer is determined by dissolving the copolymer in tetrahydrofuran, reprecipitating with methanol / acetone (50/50 mol%), coagulating twice, and vacuum drying. , 50 OMH z ' ⁇ -NMR.
- Mooney viscosity (ML 1 + 4 , 100) was measured according to JIS K6301.
- Abrasion resistance was measured using a pico abrasion tester in accordance with ASTM D 2228. This property was expressed as an index (wear resistance index).
- a tank equipped with a stirrer was charged with 200 parts of water, 3 parts of rosin acid, 0.15 parts of t-dodecylmercaptan, and a monomer having the composition shown in Table 1.
- the reactor temperature was set to 5 ° C, and 0.1 part of cumenehydride peroxide, 0.2 part of sodium formaldehyde sulfoxylate and 0.01 part of ferric sulfate were added as radical polymerization initiators.
- the polymerization was started. When the conversion reached 60%, the reaction was stopped by adding getyl hydroxylamine ( after the unreacted monomer was recovered, sulfuric acid and sodium chloride were added to convert the polymer into crumbs).
- the solid was coagulated and dried with a crumb dryer to obtain a gen-based rubber No. 1 to 5. Table 1 shows the properties of these gen-based rubbers.
- Examples 1 to 5 and Comparative Example 1 Gen-based rubber No. 1 to 4 prepared in the production example was used as the raw rubber, and the total amount of the raw rubber was determined in a 250 ml Brabender type mixer based on the formulation of the platform 1 shown in Table 2.
- the remaining compounding agents except for sulfur and the vulcanization accelerator were added and kneaded at the same temperature for 3 minutes.
- the obtained mixture, sulfur and a vulcanization accelerator were kneaded with an open roll at 50 ° C, and then press-vulcanized at 160 ° C for 30 minutes to prepare a test piece, and each physical property was measured.
- Table 3 shows the results.
- Conjugated Jen unit 40-99.9% by weight Amino group-containing vinyl monomer unit 0.05-20% by weight, Hydroxyl group-containing vinyl monomer unit 0.01-120% by weight and consists other copolymerizable monomer units 0-50 wt%, diene-based rubber having an arm one knee viscosity of 10 to 200 (ML physician 4, 100).
- the tertiary amino group-containing vinyl monomer is N, N-disubstituted aminoalkyl acrylate, N, N-disubstituted aminoalkyl acrylamide,
- the gen-based rubber according to the above (4) which is an N.N-disubstituted aromatic vinyl compound or a vinyl compound having a pyridyl group.
- the hydroxyl group-containing vinyl monomer is a hydroxyl group-containing unsaturated carboxylic acid monomer, a hydroxyl ether-containing vinyl ether monomer or a vinyl ketone monomer, and is preferably The diene rubber according to any one of the above (1) to (5), which is an unsaturated carboxylic acid monomer containing a hydroxyl group.
- the hydroxy group-containing unsaturated carboxylic acid monomer is a hydroxy group-containing unsaturated carboxylic acid ester, a hydroxy group-containing unsaturated carboxylic acid amide, or a hydroxy group-containing unsaturated carboxylic anhydride.
- a vinyl monomer containing an amino group and a hydroxyl group is copolymerized with a conjugated diene, or a vinyl monomer containing an amino group and a hydroxyl group is conjugated with a conjugated diene and another conjugated diene.
- a method for producing a gen-based rubber which comprises copolymerizing with a copolymerizable monomer.
- the gen-based rubber of the present invention is to provide a vulcanized rubber having excellent processability and having not only improved heat build-up but also improved tensile strength and wear resistance when silica is used as a reinforcing agent. Can be. Therefore, the gen-based rubber and the rubber composition of the present invention are useful in various applications utilizing their characteristics. For example, use as a material for tire parts such as treads, carcass, side walls, beads, etc., and as rubber products such as hoses, window frames, belts, shoe soles, anti-vibration rubber, automobile parts, etc. Use of Alternatively, it is possible to use a resin such as impact-resistant polystyrene or ABS resin as a reinforcing rubber. In particular, it is highly useful as a tread, and is suitable, for example, as a tire tread for fuel-efficient tires, as well as a tire tread for all-season tires, high-performance tires, and studless tires.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/101,040 US6111045A (en) | 1995-12-29 | 1996-12-19 | Diene rubber, process for preparing same, and composition containing same |
EP96942578A EP0870786B1 (en) | 1995-12-29 | 1996-12-19 | Diene rubber, process for the preparation of the same and composition containing the same |
DE69615706T DE69615706T2 (de) | 1995-12-29 | 1996-12-19 | Dienkautschuk verfahren zu dessen herstellung und diesen kautschuk enthaltende zusammensetzung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7/352545 | 1995-12-29 | ||
JP35254595A JP3736577B2 (ja) | 1995-12-29 | 1995-12-29 | ゴム組成物及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997024383A1 true WO1997024383A1 (fr) | 1997-07-10 |
Family
ID=18424800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/003706 WO1997024383A1 (fr) | 1995-12-29 | 1996-12-19 | Caoutchouc dienique, processus de preparation et composition le contenant |
Country Status (5)
Country | Link |
---|---|
US (1) | US6111045A (ja) |
EP (1) | EP0870786B1 (ja) |
JP (1) | JP3736577B2 (ja) |
DE (1) | DE69615706T2 (ja) |
WO (1) | WO1997024383A1 (ja) |
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DE59907363D1 (de) * | 1998-11-16 | 2003-11-20 | Bayer Ag | Carboxylgruppen-haltige Lösungskautschuke enthaltende Kautschukmischungen |
JP2001261891A (ja) * | 1999-05-17 | 2001-09-26 | Yokohama Rubber Co Ltd:The | ゴム組成物 |
EP1152030B1 (en) * | 2000-05-01 | 2012-12-12 | JSR Corporation | Rubber mixtures based on crosslinked rubber particles and non-crosslinked rubbers |
DE60108054T2 (de) | 2000-10-26 | 2005-12-15 | Jsr Corp. | Kautschukzusammensetzung und Verfahren zu ihrer Herstellung |
US6627722B2 (en) * | 2000-12-05 | 2003-09-30 | Stephan Rodewald | Functionalized elastomers |
US6627721B1 (en) * | 2002-09-19 | 2003-09-30 | The Goodyear Tire & Rubber Company | Functionalized elastomers |
US7294666B2 (en) * | 2001-03-16 | 2007-11-13 | The Goodyear Tire & Rubber Company | Tire with component of rubber composition comprised of silica reinforcement and emulsion polymerization derived terpolymer rubber of diene/vinyl aromatic compound which contains pendant hydroxyl groups |
ATE396207T1 (de) * | 2001-03-26 | 2008-06-15 | Jsr Corp | Hydriertes modifiziertes polymer, verfahren zu seiner herstellung und dieses enthaltende zusammensetzung |
DE60231905D1 (de) * | 2001-09-27 | 2009-05-20 | Jsr Corp | (co)polymerkautschuk auf basis von konjugiertem diolefin, verfahren zur herstellung von (co)polymerkautschuk, kautschukzusammensetzung, verbundwerkstoff und reifen |
JP3904063B2 (ja) * | 2002-02-20 | 2007-04-11 | 日本ゼオン株式会社 | 共役ジエン系ゴム、油展ゴムおよびゴム組成物 |
US6825306B2 (en) | 2002-08-16 | 2004-11-30 | The Goodyear Tire & Rubber Company | Functionalized monomers for synthesis of rubbery polymers |
US6812307B2 (en) * | 2002-08-16 | 2004-11-02 | The Goodyear Tire & Rubber Company | Functionalized monomers for synthesis of rubbery polymers |
US7222650B2 (en) * | 2002-08-16 | 2007-05-29 | The Goodyear Tire & Rubber Company | Tire with a tread comprising a rubbery polymer of a functionalized monomer |
US6693160B1 (en) * | 2002-08-16 | 2004-02-17 | The Goodyear Tire & Rubber Company | Functionalized monomers for synthesis of rubbery polymers |
US6933358B2 (en) * | 2002-08-16 | 2005-08-23 | The Goodyear Tire & Rubber Company | Functionalized monomers for synthesis of rubbery polymers |
US6758251B2 (en) * | 2002-08-21 | 2004-07-06 | The Goodyear Tire & Rubber Company | Pneumatic tire having a component containing high trans styrene-butadiene rubber |
US6803462B2 (en) * | 2002-09-19 | 2004-10-12 | The Goodyear Tire & Rubber Company | Process for synthesizing functionalized styrene monomer |
US6790921B1 (en) | 2002-09-19 | 2004-09-14 | The Goodyear Tire & Rubber Company | Functionalized elastomers |
US6664328B1 (en) * | 2002-09-19 | 2003-12-16 | The Goodyear Tire & Rubber Company | Functionalized elastomers |
US6889737B2 (en) * | 2002-12-05 | 2005-05-10 | The Goodyear Tire & Rubber Company | Pneumatic tire having a component containing high trans styrene-butadiene rubber |
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US20070066744A1 (en) * | 2005-09-21 | 2007-03-22 | Marc Weydert | Tire with tread containing tin coupled amine functionalized polybutadiene and nanostructured inversion carbon black |
BRPI0604797A (pt) * | 2005-11-30 | 2007-10-09 | Goodyear Tire & Rubber | polìmeros de borracha funcionalizados |
US20080115874A1 (en) * | 2006-11-21 | 2008-05-22 | Georges Marcel Victor Thielen | Tire with apex containing in-situ resin and rubber with pendant hydroxyl groups |
JP5144137B2 (ja) * | 2007-06-18 | 2013-02-13 | 住友ゴム工業株式会社 | トレッド用ゴム組成物およびそれを用いたトレッドを有するタイヤ |
KR100959168B1 (ko) * | 2008-07-07 | 2010-05-24 | 금호타이어 주식회사 | 접착력 및 내스코치성이 향상된 카카스용 고무 조성물 |
CN101724185B (zh) * | 2008-10-16 | 2013-10-23 | 住友橡胶工业株式会社 | 橡胶组合物及轮胎 |
CN101724127A (zh) * | 2008-10-16 | 2010-06-09 | 住友橡胶工业株式会社 | 聚合物、橡胶组合物及使用该橡胶组合物的轮胎 |
WO2010116988A1 (ja) * | 2009-04-07 | 2010-10-14 | 住友ゴム工業株式会社 | 極性基含有共重合体、ゴム組成物及びスタッドレスタイヤ |
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SG2013071709A (en) * | 2012-09-26 | 2014-04-28 | Sumitomo Chemical Co | Method for producing modified conjugated diene-basedpolymer, and method for producing polymer composition |
SG2013072061A (en) * | 2012-09-26 | 2014-04-28 | Sumitomo Chemical Co | Method for producing modified conjugated diene-based polymer, and method for producing polymer composition |
KR102122440B1 (ko) | 2017-08-30 | 2020-06-12 | 주식회사 엘지화학 | 공액디엔계 공중합체 제조방법, 이로부터 제조된 공액디엔계 공중합체 및 이를 포함하는 고무 조성물 |
KR102167527B1 (ko) | 2017-12-19 | 2020-10-19 | 주식회사 엘지화학 | 공액디엔계 공중합체 조성물, 이의 제조방법 및 이를 포함하는 고무 조성물 |
KR102319522B1 (ko) | 2017-12-20 | 2021-10-28 | 주식회사 엘지화학 | 공액디엔계 공중합체 조성물, 이의 제조방법 및 이를 포함하는 고무 조성물 |
KR20210038376A (ko) | 2019-09-30 | 2021-04-07 | 주식회사 엘지화학 | 스티렌-공액디엔계 중합체 고무 조성물 |
KR102490383B1 (ko) | 2019-10-11 | 2023-01-25 | 주식회사 엘지화학 | 공액디엔계 공중합체 조성물, 이의 제조방법 및 이를 포함하는 고무 조성물 |
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- 1995-12-29 JP JP35254595A patent/JP3736577B2/ja not_active Expired - Fee Related
-
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- 1996-12-19 EP EP96942578A patent/EP0870786B1/en not_active Expired - Lifetime
- 1996-12-19 WO PCT/JP1996/003706 patent/WO1997024383A1/ja active IP Right Grant
- 1996-12-19 US US09/101,040 patent/US6111045A/en not_active Expired - Lifetime
- 1996-12-19 DE DE69615706T patent/DE69615706T2/de not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
DE69615706T2 (de) | 2002-08-01 |
DE69615706D1 (de) | 2001-11-08 |
EP0870786A1 (en) | 1998-10-14 |
EP0870786B1 (en) | 2001-10-04 |
US6111045A (en) | 2000-08-29 |
JPH09183820A (ja) | 1997-07-15 |
JP3736577B2 (ja) | 2006-01-18 |
EP0870786A4 (en) | 1999-03-10 |
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