WO2020175344A1 - 加硫ゴム組成物 - Google Patents
加硫ゴム組成物 Download PDFInfo
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- WO2020175344A1 WO2020175344A1 PCT/JP2020/006962 JP2020006962W WO2020175344A1 WO 2020175344 A1 WO2020175344 A1 WO 2020175344A1 JP 2020006962 W JP2020006962 W JP 2020006962W WO 2020175344 A1 WO2020175344 A1 WO 2020175344A1
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- WIPO (PCT)
- Prior art keywords
- group
- substituent
- compound
- rubber composition
- vulcanized rubber
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 224
- 239000004636 vulcanized rubber Substances 0.000 title claims abstract description 197
- 150000001875 compounds Chemical class 0.000 claims abstract description 234
- 125000001424 substituent group Chemical group 0.000 claims description 158
- 125000000217 alkyl group Chemical group 0.000 claims description 108
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 64
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 56
- 229910052757 nitrogen Inorganic materials 0.000 claims description 48
- 125000003118 aryl group Chemical group 0.000 claims description 28
- 125000003277 amino group Chemical group 0.000 claims description 27
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 26
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 25
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 25
- 239000000126 substance Substances 0.000 claims description 24
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 21
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 claims description 21
- 125000005843 halogen group Chemical group 0.000 claims description 21
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- 125000004104 aryloxy group Chemical group 0.000 claims description 14
- 125000002102 aryl alkyloxo group Chemical group 0.000 claims description 12
- 125000000000 cycloalkoxy group Chemical group 0.000 claims description 12
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 9
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- 125000005098 aryl alkoxy carbonyl group Chemical group 0.000 claims description 7
- 125000005161 aryl oxy carbonyl group Chemical group 0.000 claims description 7
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- -1 bicyclo[2.2.1] heptyl group Chemical group 0.000 description 100
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- 230000000052 comparative effect Effects 0.000 description 44
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 42
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- 125000006353 oxyethylene group Chemical group 0.000 description 13
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- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
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- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 4
- 125000004448 alkyl carbonyl group Chemical group 0.000 description 4
- 125000005099 aryl alkyl carbonyl group Chemical group 0.000 description 4
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- 238000001514 detection method Methods 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 4
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- 239000007800 oxidant agent Substances 0.000 description 4
- WHMDPDGBKYUEMW-UHFFFAOYSA-N pyridine-2-thiol Chemical compound SC1=CC=CC=N1 WHMDPDGBKYUEMW-UHFFFAOYSA-N 0.000 description 4
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- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 3
- ZEUAKOUTLQUQDN-UHFFFAOYSA-N 6-(dibenzylcarbamothioyldisulfanyl)hexylsulfanyl n,n-dibenzylcarbamodithioate Chemical compound C=1C=CC=CC=1CN(CC=1C=CC=CC=1)C(=S)SSCCCCCCSSC(=S)N(CC=1C=CC=CC=1)CC1=CC=CC=C1 ZEUAKOUTLQUQDN-UHFFFAOYSA-N 0.000 description 3
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- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
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- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 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
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- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
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- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
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- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
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- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- GYZQBXUDWTVJDF-UHFFFAOYSA-N tributoxy(methyl)silane Chemical compound CCCCO[Si](C)(OCCCC)OCCCC GYZQBXUDWTVJDF-UHFFFAOYSA-N 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- NMEPHPOFYLLFTK-UHFFFAOYSA-N trimethoxy(octyl)silane Chemical compound CCCCCCCC[Si](OC)(OC)OC NMEPHPOFYLLFTK-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 238000002525 ultrasonication Methods 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
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- 150000003751 zinc Chemical class 0.000 description 1
- 229940098697 zinc laurate Drugs 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- GPYYEEJOMCKTPR-UHFFFAOYSA-L zinc;dodecanoate Chemical compound [Zn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O GPYYEEJOMCKTPR-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/378—Thiols containing heterocyclic rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
- C08K5/3725—Sulfides, e.g. R-(S)x-R' containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/32—One oxygen, sulfur or nitrogen atom
- C07D239/38—One sulfur atom
Definitions
- the present invention relates to a vulcanized rubber composition.
- Vulcanized rubber compositions are used in various fields (for example, tires), and various techniques have been proposed in order to improve their physical properties.
- Patent Document 1 in order to achieve hardness stabilization of a vulcanized rubber composition (specifically, suppression of increase in hardness due to aging of a vulcanized rubber composition), a pyrimidine derivative (particularly 2, 2 -Bis (4,6-dimethylpyrimidyl) disulphide) is used.
- Patent Document 1 Special Table 2 0 0 4 — 5 0 0 4 7 1 Publication
- Abrasion resistance is one of the important performances in tires, and it is required to improve the abrasion resistance of vulcanized rubber compositions used for tires.
- the present invention has been made in view of such circumstances, and an object thereof is to provide a vulcanized rubber composition having excellent abrasion resistance.
- the present invention that can achieve the above object is as follows.
- X 13 represents a nitrogen atom or 0 1 [3 ⁇ 4 13 ,
- X 33 is a nitrogen atom or Represents
- X 53 is a nitrogen atom or Represents
- At least one of X 1 % X 33 and X 53 is a nitrogen atom, and May each independently have a hydrogen atom, a halogen atom, or a substituent.
- ⁇ 3 _ 1 0 cycloalkyl group which may have a substituent, 0 6-18 aryl group which may have a substituent, 7 20 aralkyl group which may have a substituent, Carboxy group, which may have a substituent ⁇ ] 8 alkoxy-carbonyl group, which may have a substituent ⁇ 3 _!.
- Cycloalkyloxy-carbonyl group which may have a substituent Aryloxy-carbonyl group, which may have a substituent ⁇ 7-20 aralkyloxy-carbonyl group, which may have a carbamoyl group, a hydroxy group, which may have a substituent Bok 18 alkoxy group which may have a substituent ⁇ 3 0 cycloalkyloxy group which may have a substituent ⁇ 6 _!
- aryloxy group which may have a substituent ⁇ 7-20 aralkyloxy group, optionally substituted ⁇ i 18 alkyl-carbonyloxy group, optionally substituted ⁇ 3 ⁇ cycloalkyl-carbonyloxy group, optionally substituted which may be 0 6 8 aryl over arylcarbonyloxy group represents a substituted and may ⁇ 7-20 aralkyl over carbonyloxy group, an amino group but it may also have a substituent group or a nitro group.
- the content of the compound represented by the formula ( ⁇ ) is ⁇ . ⁇ 02020/175344 3 (:171?2020/006962
- a vulcanized rubber composition having an amount of from 00005 to 5% by weight.
- substituents may ⁇ I 18 alkyl group which may have a have a have ⁇ may I 12 alkyl group optionally having a halogen atom, more preferably optionally may ⁇ 1 a halogen atom
- X 13 and X 33 are both nitrogen atoms, and X 53 is Each of them may independently have a hydrogen atom or a substituent ⁇ ! _ 18 Compounds that are alkyl or nitro ((3)),
- X 13 is a nitrogen atom
- X 33 is
- each may independently have a hydrogen atom or a substituent.
- Each independently is a aralkyl group which may have a substituent
- the ⁇ i 18 alkyl group which may have a substituent is ⁇ ! _ 18 alkyl group, more preferably The vulcanized rubber composition according to any one of the above [3] to [12], which is an alkyl group, more preferably a 0 1 _ 6 alkyl group, and particularly preferably a ⁇ 3 1 -3 alkyl group. Stuff.
- the content of the compound represented by the formula (I) is, based on the entire vulcanized rubber composition, 0.0008% by weight or more, more preferably 0.00001 0% by weight or more, and further preferably. Is 0.001% by weight or more, particularly preferably 0.010% by weight or more, and the vulcanized rubber composition according to any one of the above [1] to [14].
- the content of the compound represented by the formula () is 3% by weight or less, more preferably 1% by weight or less, based on the entire vulcanized rubber composition, [1] to [15] The vulcanized rubber composition according to any one of 1.
- X 115 represents a nitrogen atom or 0 1 [ ⁇
- X 315 is a nitrogen atom or Represents
- X 515 represents a nitrogen atom or 0 1 [3 ⁇ 4,
- X 1 Represents a nitrogen atom or 0 1 [3 ⁇ 4,
- X 5 Represents a nitrogen atom or
- Optionally may be a 6 8 aryloxy group, optionally having a
- a hydrogen atom which may have a substituent ⁇ Bok 18 alkyl group, Cal Bokishi group, which may have a substituent ⁇ I 18 alkoxycarbonyl Kishi carbonyl group, or is The vulcanized rubber composition according to any one of [17] to [24], which is a nitro group.
- substituent may ⁇ I 18 alkyl group which may have a have a have ⁇ may I 12 alkyl group optionally having a halogen atom, more preferably optionally may ⁇ 1 a halogen atom
- a have ⁇ may I 12 alkoxycarbonyl Kishi carbonyl group having a substituent, more preferably ⁇ is a 2 alkoxycarbonyl Kishi carbonyl group wherein [25] or a vulcanized rubber composition according to [2 6].
- X 115 and X are both nitrogen atoms, X 315 is ⁇ _[3 ⁇ 4, and 5 s is, and X 3 . But, And and Are each independently a hydrogen atom, optionally having a substituent ⁇ ] 8 An alkyl group or a nitro group ( ⁇ ⁇ ⁇ ), and
- X 113 is 01 [3 ⁇ 4 115 and X 315 is 01 [3 ⁇ 4 315 and X 1 . However, 001 [ ⁇ . And X 3 . But, And X 5 and X 5 . Are both nitrogen atoms, and and Independently, a compound which is a hydrogen atom, optionally substituted 18 alkyl group or nitro group ( ⁇ ⁇ )
- X 5 is And Are each independently an optionally substituted ⁇ 8 alkyl group, and
- [35] may have a substituent ⁇ I 18 alkyl group is a ⁇ I 18 alkyl group, more preferably ⁇ ] a 2-alkyl group, more preferably ⁇ 1 _ 6 alkyl a group, particularly preferably ⁇ 3 1 - 3 wherein the alkyl groups [1 7] to a vulcanized rubber composition according to any one of [34].
- the content of the compound represented by the formula (II) is, based on the entire vulcanized rubber composition, ⁇ .0001% by weight or more, more preferably ⁇ .0002% by weight or more, and further preferably V.
- the content of the compound represented by the formula (II) is 1.0% by weight or less, more preferably 0.5% by weight or less, and further preferably ⁇ .
- the vulcanized rubber is a rubber component crosslinked with a sulfur component.
- the vulcanized rubber composition according to any one of [1] to [38].
- the amount of the sulfur component is 0.1 to 10 parts by weight, more preferably 0. 1 to 7 parts by weight, and further preferably 0. 1 to 4 parts by weight, per 100 parts by weight of the rubber component.
- the amount of the gen-based rubber in the rubber component is 50 to 100% by weight, more preferably 70 to 100% by weight, further preferably 80 to 100% by weight, and most preferably 100% by weight.
- the rubber component contains a styrene-butadiene diene copolymer rubber
- the amount of the styrene-butadiene diene copolymer rubber in the rubber component is 50 to 100% by weight, more preferably 70 to 100% by weight, and further preferably 80 to 100% by weight.
- the total amount of rubber is 50 to 100% by weight, more preferably 70 to 100% by weight, still more preferably 80 to 100% by weight, and most preferably 100% by weight.
- Sulfur rubber composition is 50 to 100% by weight, more preferably 70 to 100% by weight, still more preferably 80 to 100% by weight, and most preferably 100% by weight.
- the weight ratio of the amount of butadiene rubber and the amount of styrene ⁇ butadiene copolymer rubber is 5/95 to 50/50, more preferably 10 /90 to 40/60, more preferably 20/80 to 40/60, the vulcanized rubber composition described in the above [45] or [46].
- the total amount of styrene-butadiene copolymer rubber and natural rubber in the rubber component is 50 to 100% by weight, more preferably 70 to 100% by weight, and further preferably 80 to 100% by weight,
- the weight ratio of the amount of natural rubber and the amount of styrene-butadiene copolymer rubber is 5/95-
- the vulcanized rubber composition further contains silica [39] to [50]
- ear Ding specific surface area of silica is from 20 to 400,012 / 9, according to more preferred rather is 20-350 2/9, more preferably from 20 to 300 2/9 and a pre-Symbol [5 1] Vulcanized rubber composition.
- the amount of silica is 10 to 120 parts by weight, more preferably 20 to 120 parts by weight, further preferably 30 to 120 parts by weight, and most preferably 50 to 100 parts by weight of the rubber component.
- the vulcanized rubber composition further contains carbon black.
- the specific surface area of the bonbon black is from 10 to 1 300 ⁇ 1 2 / 9 , more preferably from 20 to 1 30 ⁇ 2 /9.
- the amount of carbon black is 1 to 120 parts by weight, more preferably 1 to 100 parts by weight, further preferably 1 to 60 parts by weight, and most preferably 1 to 30 parts by weight per 100 parts by weight of the rubber component.
- the weight ratio of the amount of force-bon black to the amount of silica is 1/120 to 1/1, more preferably 1/1202 to 3/5.
- a vulcanized rubber composition containing a compound represented by the formula (I) (hereinafter, may be abbreviated as "compound ( ⁇ )”) is a compound ( ⁇ ), a rubber component and a sulfur component, and if necessary, It can be produced by kneading other components (for example, silica, carbon black) according to the necessity, and heating the obtained rubber composition. It is considered that the compound ( ⁇ ) is consumed by the reaction of the compound ( ⁇ ) with the rubber component and/or other components during the kneading or heating to form another compound. Therefore, even if the compound ( ⁇ ) is used, the vulcanized rubber composition obtained may not contain the predetermined amount of the compound ( ⁇ ). In this regard, as a result of intensive studies by the present inventors, a vulcanized rubber containing a predetermined amount of compound ( ⁇ ) ⁇ 02020/175344 13 ⁇ (: 171?2020/006962
- the composition exhibits excellent wear resistance.
- 0 x 1 means that the carbon number is X or more and V or less (X and V represent numbers).
- halogen atom examples include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- the alkyl group may be linear or branched.
- the carbon number of the alkyl group is, for example, 1 to 18.
- Examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isoptyl group, 360-butyl group, 6 "1:-a butyl group, a pentyl group, an isopentyl group, a neopentyl group, 1-ethylpropyl group, hexyl group, isohexyl group, 1,1-dimethylputyl group, 2,2-dimethylputyl group, 3,3-dimethylputyl group,
- the alkyl group may have a substituent.
- Other groups containing an alkyl group as a part may also have a substituent.
- Substituents that may be possessed by other groups, including alkyl groups (eg ⁇ 3 !8 alkyl groups) and partly alkyl groups (eg ⁇ ! _ 18 alkyl groups) include, for example: :
- aryloxy group (preferably ⁇ 6-14 aryloxy group),
- the carbon number of the cycloalkyl group is, for example, 3 to 10.
- the cycloalkyl group include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a bicyclo[2.2.1] heptyl group, and a bicyclo[2.2.2]octyl group.
- the carbon number of the aryl group is, for example, 6 to 18.
- Examples of the aryl group include a phenyl group, 1-naphthyl group, 2-naphthyl group, 1-anthryl group,
- Examples include 2-anthryl group and 9-anthryl group.
- the carbon number of the aralkyl group is, for example, 7 to 20.
- Examples of the aralkyl group include a benzyl group, a phenethyl group, a naphthylmethyl group, and a phenylpropyl group.
- the cycloalkyl group, aryl group and aralkyl group may each have a substituent.
- Other groups containing a cycloalkyl group or the like as a part thereof may also have a substituent in the same manner.
- Cycloalkyl groups eg ⁇ 3 3 ! . cycloalkyl groups
- aryl groups eg ⁇ 3 6-18 aralkyl groups
- aralkyl groups eg ⁇ 3 7-20 aralkyl groups
- cycloalkyl group (preferably ⁇ 3 3-8 cycloalkyl group), ⁇ 02020/175344 15 (:171?2020/006962
- aralkyl group (preferably ⁇ 3 7-16 aralkyl group),
- aryloxy group (preferably ⁇ 6-14 aryloxy group),
- alkyl group which is a part of the alkoxy group (that is, the alkyloxy group) is as described above. The same applies to the description of the alkyl group which is a part of the group described later.
- alkoxy group include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, an isobutoxy group, a 360-butoxy group, an I 6 “butoxy group, a pentyloxy group and a hexyloxy group. Be done.
- cycloalkyl group that is a part of the cycloalkyloxy group is as described above. The same applies to the description of the cycloalkyl group which is a part of the group described later.
- the cycloalkyloxy group include a cyclopropyloxy group, a cyclopropyloxy group, a cyclopentyloxy group, a cyclohexyloxy group, a cycloheptyloxy group, and a cyclooctyloxy group.
- aryl group which is a part of the group described later.
- aryloxy group examples include a phenyloxy group, a 1-naphthyloxy group and a 2-naphthyloxy group.
- aralkyl group which is a part of the aralkyloxy group is as described above. The same applies to the description of the aralkyl group which is a part of the group described later.
- the aralkyloxy group include a benzyloxy group, a phenethyloxy group, a naphthylmethyloxy group, and a phenylpropyloxy group.
- alkyl-carbonyloxy group examples include an acetyloxy group and a ⁇ 02020/175344 16 box (: 171?2020/006962
- Examples of the cycloalkyl-carbonyloxy group include a cyclopropyl-carbonyloxy group, a cyclobutyl-carbonyloxy group, a cyclopentylcarbonylcarbonyl group, a cyclohexyl-carbonyloxy group, a cycloheptyl-carbonyloxy group, and a cyclooctyl group. And a carbonyl group.
- aryl-carbonyloxy group examples include a benzoyloxy group and
- Examples thereof include 1-naphthoyloxy group and 2-naphthoyloxy group.
- Examples of the aralkyl carbonyloxy group include a phenylacetyloxy group and a phenylpropionyloxy group.
- alkoxy-carbonyl group examples include a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, an isopropoxycarbonyl group, a butoxycarbonyl group, an isobutoxycarbonyl group, a 360-butoxycarbonyl group, and a Examples thereof include butoxycarbonyl group, pentyloxycarbonyl group and hexyloxycarbonyl group.
- Examples of the cycloalkyloxy-carbonyl group include a cyclopropyloxycarbonyl group, a cyclobutyloxycarbonyl group, a cyclopentyloxycarbonyl group, a cyclohexyloxycarbonyl group, a cycloheptyloxycarbonyl group, and a cyclooctyloxycarbonyl group.
- Examples of the aryloxy-carbonyl group include a phenyloxycarbonyl group, a 1-naphthyloxycarbonyl group, and a 2-naphthyloxycarbonyl group.
- Examples of the aralkyloxy-carbonyl group include benzyloxycarl ⁇ 02020/175344 17 ⁇ (: 171?2020/006962
- Examples thereof include a bonyl group, a phenethyloxycarbonyl group, a naphthylmethyloxycarbonyl group and a phenylpropyloxycarbonyl group.
- Examples of the carbamoyl group which may have a substituent include, for example, an alkyl group which may have a substituent, a cycloalkyl group which may have a substituent, and a substituent which has a substituent. And an optionally substituted aryl group, and a carbamoyl group optionally having 1 or 2 substituents selected from an optionally substituted aralkyl group.
- Mono or di(alkyl)carbamoyl group (the alkyl may have a substituent) (eg, methylcarbamoyl group, ethylcarbamoyl group, dimethylcarbamoyl group, diethylcarbamoyl group, 1 ⁇ !-Ethyl-methylcarbamoyl group),
- a substituent eg, methylcarbamoyl group, ethylcarbamoyl group, dimethylcarbamoyl group, diethylcarbamoyl group, 1 ⁇ !-Ethyl-methylcarbamoyl group
- cycloalkyl may have a substituent (eg, cyclopropylcarbamoyl group, cyclohexylcarbamoyl group),
- Mono- or di-(aralkyl)carbamoyl group (the above-mentioned aralkyl may have a substituent) (eg, benzylcarbamoyl group, phenethylcarbamoyl group).
- the term “mono- or di(alkyl)carbamoyl group (wherein the alkyl may have a substituent)” means a mono(alkyl)carbamoyl group.
- the alkyl may have a substituent
- a di(alkyl)carbamoyl group the alkyl may have a substituent
- the “mono(alkyl)carbamoyl group (the alkyl may have a substituent)” means a carbamoyl having one alkyl group which may have a substituent. ⁇ 0 2020/175 344 18 ⁇ (: 171? 2020 /006962
- a "di(alkyl)carbamoyl group (wherein the alkyl may have a substituent) means a carbamoyl group having two alkyl groups which may have a substituent. .. The meanings of the notation of monon or gee are similar.
- Examples of the amino group which may have a substituent include an alkyl group which may have a substituent, a cycloalkyl group which may have a substituent, and a substituent which has a substituent.
- an aryl group, optionally substituted aralkyl group, optionally substituted alkyl-carbonyl group, optionally substituted cycloalkyl-carbonyl group, optionally substituted Examples thereof include an aryl-carbonyl group which may have and an amino group which may have 1 or 2 substituents selected from an aralkylcarbonyl group which may have a substituent.
- amino group which may have a substituent include the following:
- Mono or di (alkyl) amino group (the alkyl may have a substituent) (eg, methylamino group, trifluoromethylamino group, dimethylamino group, ethylamino group, diethylamino group, Propylamino group, dibutylamino group),
- a substituent eg, methylamino group, trifluoromethylamino group, dimethylamino group, ethylamino group, diethylamino group, Propylamino group, dibutylamino group
- cycloalkyl may have a substituent (eg, cyclopropylamino group, cyclohexylamino group),
- Mono or di (aryl) amino group (the aryl may have a substituent) (eg, phenylamino group),
- aralkyl may have a substituent (eg, benzylamino group, dibenzylamino group),
- Mono or di (alkyl-carbonyl) amino group (the alkyl-carbonyl may have a substituent) (eg, acetylamino group, ⁇ 0 2020/175 344 19 ⁇ (: 17 2020 /006962
- Mono or di (cycloalkyl-carbonyl) amino group (the cycloalkyl-carbonyl may have a substituent) (eg, cyclopropylcarbonylamino group, cyclohexylcarbonylamino group),
- Mono or di (aryl-carbonyl) amino group (the aryl-carbonyl may have a substituent) (eg, benzoylamino group)
- the “mono- or di(alkyl)amino group (the alkyl may have a substituent)” means a mono(alkyl)amino group (the alkyl has a substituent). Or a di(alkyl)amino group (the alkyl may have a substituent).
- the “mono(alkyl)amino group (wherein the alkyl may have a substituent)” means an amino group having one alkyl group which may have a substituent.
- (Alkyl) amino group (the alkyl may have a substituent) "represents an amino group having two alkyl groups which may have a substituent. The meanings of the notation of moneau or gee are the same in other cases.
- the vulcanized rubber composition of the present invention has the formula ( ⁇ ):
- the compound represented by the formula (3) is contained in a predetermined amount.
- the compound ( ⁇ ) only one kind may be used, or two or more kinds may be used in combination. ⁇ 02020/175344 20 units (: 171? 2020 /006962
- XI is a nitrogen atom or Is a nitrogen atom or
- X 53 represents, and X 53 represents a nitrogen atom or 0 [3 ⁇ 4 5 3 ] . However, at least one of ⁇ 1 and ⁇ is a nitrogen atom. It is preferred that XI% 3 3 and 2 or 2 are nitrogen atoms.
- [0078] May each independently have a hydrogen atom, a halogen atom, or a substituent.
- Substituent has also been may ⁇ 3 _ 1 0 cycloalkyl group, optionally having a substituent may ⁇ 6-18 aryl group, ⁇ may have a substituent 7-20 aralkyl group, Carboxy group, which may have a substituent ⁇ ] 8 alkoxy-carbonyl group, which may have a substituent ⁇ 3 _
- aryloxy group optionally substituted ⁇ 7-20 aralkyloxy group, optionally substituted ⁇ 18 alkyl-carbonyloxy group, optionally substituted ⁇ 3 ⁇ cycloalkyl-carbonyloxy group, which may have a substituent 8 Aryl -carbonyloxy group, optionally substituted 7-20 Aralkyl carbonyloxy group, optionally substituted amino group, or nitro group.
- Is And [means 6 Other similar descriptions have the same meaning.
- each independent, hydrogen atom which may have a substituent ⁇ Bok 18 alkyl group, a carboxy group, which may have a substituent ⁇ I 18 alkoxycarbonyl Kishi carbonyl group or double, It is a Toro group.
- the ⁇ ] 8 alkyl group which may have a substituent is preferably a ⁇ ] 2 alkyl group which may have a halogen atom, and more preferably has a halogen atom.
- the O 18 alkoxy-carbonyl group which may have a substituent is preferably a O 12 alkoxy-carbonyl group which may have a substituent, more preferably the O 12 alkoxy-carbonyl group which may have a substituent. It is an alkoxy-carbonyl group.
- Examples of preferable compounds ( ⁇ ) include the following:
- compound ( ⁇ 3) are each independently a hydrogen atom, an optionally substituted 18 alkyl group or a nitro group (hereinafter, may be abbreviated as “compound ( ⁇ 3) ”),
- compound (I) a compound which is an alkyl group or a nitro group
- X 13 And X 33 is X 53 is a nitrogen atom, and and Are each independently a hydrogen atom, a compound which may have a substituent, an O 18 alkyl group or a nitro group (hereinafter sometimes abbreviated as “compound ( ⁇ )”).
- the compound ( ⁇ 3) are preferably each independently a hydrogen atom or an O- 18 alkyl group which may have a substituent. Further, in the compound ( ⁇ 3), X 13 and X 33 are both nitrogen atoms, and X 53 is Are each independently an 18 alkyl group which may have a substituent, and Is preferably a hydrogen atom.
- the compound ( ⁇ ), 3 and Are preferably each independently a hydrogen atom or a C18 alkyl group which may have a substituent, and more preferably both are hydrogen atoms.
- the compound ( ⁇ 3) to the compound ( ⁇ ) may have a substituent.
- the 8 alkyl group is preferably a 0 alkyl group, and more preferably 0! It is a 2-alkyl group, more preferably a ⁇ 3 1 -6 alkyl group, and particularly preferably a 0 1-3 alkyl group.
- Each of Compound (13) to Compound ( ⁇ ) may be used alone, or two or more kinds may be used in combination.
- the following are mentioned as a specific example of a compound ( ⁇ 3)-a compound ( ⁇ ).
- the compound ( ⁇ 3-1) is more preferable.
- a commercially available product can be used as the compound (I).
- Examples of commercially available products include "4,6-dimethyl-2-mercaptopyrimidine” (compound ( ⁇ 3-1)) manufactured by Tokyo Kasei Kogyo Co., Ltd., "2-mercaptopyrimidine” (compound ( ⁇ 3- 2)), "2-mercaptopyridine” manufactured by Tokyo Chemical Industry Co., Ltd. (Compound ( ⁇ 13-1)), “2-mercapto-5-nitropyridine” manufactured by Tokyo Chemical Industry Co., Ltd. (Compound ( ⁇ 13-2)), Tokyo “4-Mercaptopyridine” (compound ( ⁇ ⁇ -1)) manufactured by Kasei Kogyo Co., Ltd. and the like can be mentioned.
- a compound obtained by introducing a substituent into a commercially available product by a known method can also be used as the compound ().
- the vulcanized rubber composition of the present invention is characterized by containing the compound (I) in a predetermined amount.
- the content of the compound ( ⁇ ) with respect to the entire vulcanized rubber composition is 0.0005% by weight or more, preferably 0.0008% by weight or more, and more preferably 0.0001% by weight or more, More preferably ⁇ 001 0 ⁇ 02020/175344 23 ((171?2020/006962
- the content of the compound ( ⁇ ) with respect to the entire vulcanized rubber composition is 5% by weight or less, preferably 3% by weight or less, and more preferably 1% by weight from the viewpoint of preventing the processability of the unvulcanized rubber composition. It is less than or equal to weight %.
- the content of the compound () in the present invention is a value obtained by extraction and analysis under the conditions and methods described in the Example section.
- the vulcanized rubber composition of the present invention preferably has the following formula ().
- the compound represented by [0091] is contained in an amount of 0.0001 to 1.0% by weight based on the entire vulcanized rubber composition.
- the vulcanized rubber composition containing the compound (I) and the compound (II) in a predetermined amount can exhibit excellent abrasion resistance.
- the vulcanized rubber composition containing the compound (I) and the compound (II) includes a compound ( ⁇ ), a compound (II), a rubber component and a sulfur component, and optionally other components (for example, silica). It is possible to produce the rubber composition by kneading the rubber composition. During the kneading or heating, the compound (II) reacts with the rubber component and/or other component to form another compound, so that the compound (II) is consumed similarly to the compound ( ⁇ ). It is thought to be done. Therefore, even if the compound ( ⁇ ) is used, ⁇ 02020/175344 24 ⁇ (: 171? 2020 /006962
- the vulcanized rubber composition may not contain a predetermined amount of compound ( ⁇ ).
- [0093] represents a nitrogen atom or Nitrogen atom or Represents a nitrogen atom or 0 1 [3 ⁇ 4, XI. Is a nitrogen atom or X 3 . Is a nitrogen atom or X 5 . Is nitrogen Represents. However, 1 ⁇ 3 ⁇ 5 5 ⁇ , 3 And X 5 . At least one of which is a nitrogen atom. X 1 ⁇ 3 ⁇ 5 5 ⁇ X 1 . , X 3 . And X 5 . It is preferable that at least 1 and at most 5 are nitrogen atoms.
- X 115 and X are both nitrogen atoms, or X 115 is
- X is preferably 0. In this aspect, It is preferable that and are the same.
- a hydrogen atom, a halogen atom, a substituted group which ⁇ may I 18 alkyl group optionally having a ⁇ may have a substituent group 3 ⁇ cycloalkyl group, which may have a substituent ⁇ 6- 18 Aryl group, which may have a substituent ⁇ 7-20 Aralkyl group, benzyl group, which may have a substituent 0!
- - carbonyloxy group which may have a substituent ⁇ 3 ⁇ cycloalkyl over alkylcarbonyloxy group optionally 0 6 8 may have a substituent aryl over carbonylation aryloxy group, substituted ⁇ 7-20 Represents an aralkylcarbonyl group, an optionally substituted amino group, or a nitro group.
- .. Are preferably each independently a hydrogen atom, an optionally substituted 0-18 alkyl group, a carboxy group, an optionally substituted alkoxycarbonyl group, or a nitro group. ..
- Examples of preferable compounds ( ⁇ ) include the following:
- X 115 is 0 1 [3 ⁇ 4 115 and X 315 is 0 1 [3 ⁇ 4 315 and X 1 . However, it is 0 1 [3 ⁇ 4 and X 3 . But, X 5 and X 5 . Are both nitrogen atoms ⁇ 02020/175344 26 ⁇ (: 171?2020/006962
- [0100] in the compound ( ⁇ 3), [3 ⁇ 4 to 15 and. ⁇ . are preferably, each independently, a hydrogen atom or may have a substituent ⁇ I 18 alkyl Le group.
- X 1 ⁇ ⁇ 3 ⁇ ⁇ and ⁇ 3. are both nitrogen atoms, and X 513 is
- the compound ( ⁇ 3) to the compound ( ⁇ ) in which the compound ( ⁇ ) may have a substituent ⁇ alkyl group is preferably a ⁇ 3 ⁇ 8 alkyl group, and more preferably a ⁇ alkyl group. Is more preferable, a ⁇ 3 1 -6 alkyl group is more preferable, and a ⁇ 3 1 -3 alkyl group is particularly preferable.
- each of the compound ( ⁇ 3) to the compound ( ⁇ ) one kind may be used alone, or two or more kinds may be used in combination.
- a commercially available product can be used as the compound ( ⁇ ).
- Commercially available products include, for example, "2,2'-dipyridyldisulfide” manufactured by Tokyo Kasei Kogyo Co., Ltd. (compound ( ⁇ 1 131-1)), "2, 2'-dithiopis (5-2-2) manufactured by Tokyo Kasei Kogyo Co., Ltd. (Compound ( ⁇ ⁇ 13-2)), "4, 4'-dipyridyl disulphide” (compound ( ⁇ I ⁇ -1)) manufactured by Tokyo Chemical Industry Co., Ltd., and the like.
- Compound (II) can be produced by a known method.
- Compound (II) can be produced by a known method.
- I () can be produced, for example, by the oxidation of a commercially available compound () and/or a compound () produced by a known method and the formation of a disulphide bond, as shown below (the following formula: The definition of the group therein is as described above).
- Oxidation in the synthesis reaction of compound (II) uses an oxidizing agent such as hydrogen peroxide, potassium ferricyanide, oxygen, iodine, bromine, iodobenzene diacetate, sodium periodate, potassium permanganate. Can be done.
- an oxidizing agent such as hydrogen peroxide, potassium ferricyanide, oxygen, iodine, bromine, iodobenzene diacetate, sodium periodate, potassium permanganate.
- the oxidizing agent only one kind may be used, or two or more kinds may be used in combination.
- iodine may be generated in the system by using hydrogen peroxide and sodium iodide together. Amount of oxidant used (if more than one oxidant is used, ⁇ 0 2020/175 344 28 ⁇ (: 171? 2020 /006962
- the total amount thereof is preferably 1 to 10 mol, and more preferably 1 to 3 mol with respect to 1 mol of the total of the compound (I ⁇ 1) and the compound (I6).
- the synthesis reaction of compound (II) is usually performed in a solvent.
- the solvent include ester solvents such as ethyl acetate, methyl acetate, butyl acetate, propyl acetate, isopropyl acetate and ethyl lactate, 1 ⁇ 1, 1 ⁇ 1—dimethylformamide, 1 ⁇ 1, 1 ⁇ 1-Dimethylacetamide, 1 ⁇ 1-methyl-2-pyrrolidone and other amide solvents, dimethyl sulfoxide and other sulfoxide solvents, benzene, toluene, xylene and other aromatic hydrocarbon solvents, tetrahydrofuran, Examples thereof include ether solvents such as 1,4-dioxane and methylethyl ether, and protic solvents such as water, methanol and ethanol. As the solvent, only one kind may be used, or two or more kinds may be used in combination.
- the synthetic reaction (ie, oxidation and formation of disulfide bond) of the compound ( ⁇ ) may be carried out by adding an aqueous hydrogen peroxide solution to the compound ( ⁇ 0 and compound ( ⁇ 6). Oxidation with aqueous hydrogen peroxide solution and formation of disulphide bonds are exothermic reactions After addition of aqueous hydrogen peroxide solution, the mixture is preferably 0 to 100 ° °, more preferably 0 to 60 °. It is preferable to stir at 0, preferably 0.1 to 48 hours, and more preferably 0.1 to 24 hours.
- the compound (I) After synthesis of the compound (II), the compound (I) can be obtained by a known means (filtration, extraction, concentration, etc.). The obtained compound ( ⁇ ) may be purified by a known method.
- the content of the compound (II) relative to the entire vulcanized rubber composition is preferably 0.001% by weight or more, and more preferably 0.002% by weight. % Or more, more preferably 0.005% by weight or more, and particularly preferably 0.00.010% by weight or more.
- the content is preferably 1.0% by weight or less, more preferably 0.5% by weight or less, further preferably 0.3% by weight or less, particularly preferably 0.2% by weight or less, and most preferably ⁇ 0.1% by weight or less.
- the content of the compound ( ⁇ ) in the present invention depends on the conditions described in Examples. ⁇ 02020/175344 29 ⁇ (: 171?2020/006962
- the vulcanized rubber composition of the present invention contains vulcanized rubber.
- vulcanized rubber means "a rubber component crosslinked by a sulfur component”.
- sulfur component the rubber component and the sulfur component will be described in order.
- the rubber component for example, styrene-butadiene copolymer rubber (3M [3 ⁇ 4)
- Natural rubber [3 ⁇ 4) (modified natural rubber, including epoxylated natural rubber, deproteinized natural rubber), Butadiene rubber (Mitsumi [3 ⁇ 4], Isoprene rubber (I [3 ⁇ 4), Nitrile rubber) , Chloroprene rubber ( ⁇ [3 ⁇ 4), butyl rubber (isoprene/isobutylene copolymer rubber, ⁇ [3 ⁇ 4), ethylene/propylene/gen copolymer rubber ( ⁇ 0 1 ⁇ /1), halogenated butyl rubber Etc.
- the rubber component only one kind may be used, or two or more kinds may be used in combination.
- Emulsion polymerization method 3 examples thereof include emulsion polymerization method 3 and solution polymerization method 3 described on pages 210 to 211. Emulsion polymerization 3 and solution polymerization 3 may be used together.
- Solution polymerization 3 examples thereof include modified solution polymerization 3 having at least one element of nitrogen, tin and silicon at the molecular end, which is obtained by modification with a modifier.
- the modifier include a lactam compound, an amide compound, a urinary compound, a 1 ⁇ 1, 1 ⁇ 1_dialkyl acrylate compound, an isocyanate compound, an imide compound, a silane compound having an alkoxy group, an aminosilane compound.
- examples thereof include a modifier used in combination with a tin compound and a silane compound having an alkoxy group, and a modifier used in combination with an alkyl acrylic amide compound and a silane compound having an alkoxy group. These modifiers may be used alone or in combination of two or more.
- modified solution polymerization specifically, 4,4′-bis(dialkylamino)benzophenone such as “1 ⁇ 1 1 ⁇ ⁇ (registered trademark) N 3 1 1 6” manufactured by Zeon Corporation was used.
- Solution polymerization with modified molecular end 3 [[,,]] A solution with modified molecular end using a tin halide compound such as "3 1_5 7 4" manufactured by 3 companies ⁇ 02020/175344 30 units (: 171?2020/006962
- Examples thereof include liquid polymerization 3 minutes, and silane-altering solution polymerization 3 minutes such as “Misumi 10” and “Misumi 15” manufactured by Asahi Kasei.
- an oil-extended 3rd in which an oil such as a process oil or an aroma oil is added to the emulsion 3rd and the solution polymerization 3rd, can also be used.
- Examples of natural rubber include Ding 3 [3 ⁇ 4 2 0, 3 1
- Examples include natural rubber of a grade such as 20.
- the epoxidized natural rubber has an epoxidation degree of 10 to 60 mol% (for example, cumbulane). Is mentioned.
- As the deproteinized natural rubber a deproteinized natural rubber having a total nitrogen content of 0.3% by weight or less is preferable.
- Other modified natural rubbers include, for example, natural rubber such as 4-vinylpyridine, 1 ⁇ 1, 1 ⁇ 1 ,-dialkylaminoethyl acrylate (eg 1 ⁇ 1, 1 ⁇ 1 ,-diethylaminoethyl acrylate), 2 —A modified natural rubber containing a polar group obtained by reacting hydroxy acrylate or the like.
- the pit a pit that is commonly used in the tire industry can be used. Are often used in blends with Mitsumi and/or natural rubber.
- a cis having a high cis content is preferable, and a cis cis having a cis content of 95% by mass or more is more preferable, since the effect of improving the wear resistance is high.
- Hi-Sysumi include those made by Nippon Zeon Co., Ltd. 1 2 2 ⁇ , Mitsu made by Ube Industries Mami and the like can be mentioned.
- a modifier obtained by modifying with a modifier which has at least one element of nitrogen, tin, and silicon at the molecular end.
- the modifier include 4,4′-bis(dialkylamino)benzophenone, tin halide compound, lactam compound, amide compound, urea compound, 1 ⁇ 1, 1 ⁇ 1 _dialkyl acrylic amide compound, isocyanate Compounds, imido compounds, silane compounds having alkoxy groups (eg trialkoxysilane compounds)
- the rubber component preferably comprises a gen-based rubber.
- the gen-based rubber means a rubber made from a gen monomer having a conjugated double bond as a raw material.
- the gen-based rubber include styrene-butadiene-copolymer rubber (3m[3 ⁇ 4), natural rubber ([3 ⁇ 4), butadiene rubber (m[3 ⁇ 4)], isoprene rubber ( ⁇ [3 ⁇ 4), two-sided rubber). , Chloroprene rubber ( ⁇ [3 ⁇ 4) and the like.
- the amount of the gen-based rubber in the rubber component (that is, the amount of the gen-based rubber per 100% by weight of the rubber component) is preferably 50 to 100% by weight, It is more preferably 70 to 100% by weight, further preferably 80 to 100% by weight, and most preferably 100% by weight. That is, it is most preferable that the rubber component is a gen rubber.
- the rubber component preferably comprises 3 parts.
- the amount of 3 carbon atoms in the rubber component is preferably 50 to 100% by weight, more preferably 70 to 100% by weight, and further preferably 80 to 100% by weight.
- the rubber component preferably comprises 3 and 3.
- the total amount of 3 and 9 in the rubber component is preferably 50 to 100% by weight, more preferably 70 to 100% by weight, further preferably 80 to 100% by weight, and most preferably 100% by weight. That is, in this aspect, it is most preferable that the rubber component is composed of 3 and 3.
- the weight ratio of the amount of Mitsumi to the amount of Mitsumi is preferably 5/95 to 50/50 from the viewpoint of fuel economy and wear resistance. It is more preferably 10/90 to 40/60, and further preferably 20/80 to 40/60.
- the rubber component preferably comprises triturus and natural rubber.
- the total amount of 3 and the natural rubber in the rubber component is preferably 50 to 100% by weight, more preferably 70 to 100% by weight, further preferably 80 to 100% by weight, Most preferably, it is 100% by weight. That is, ⁇ 02020/175344 32 ((171?2020/006962
- the rubber component consists of 3 parts and natural rubber.
- the weight ratio of the amount of natural rubber to the amount of 3 m is preferably 5/95 to 50/50, more preferably from the viewpoint of improving durability. 10/90 to 40/60, more preferably 20/80 to 40/60.
- sulfur component examples include powdered sulfur, precipitated sulfur, colloidal sulfur, insoluble sulfur, and highly dispersible sulfur.
- the amount of the sulfur component is preferably 0. 1 to 10 parts by weight, more preferably 0. 1 to 7 parts by weight, and further preferably 0. 1 to 4 parts by weight, per 100 parts by weight of the rubber component. Is.
- other components different from the above-mentioned compound (I), compound (II) and vulcanized rubber that is, the rubber component crosslinked by the sulfur component
- the other component those known in the rubber field can be used, and examples thereof include fillers, compounds capable of binding to silica (eg, silane coupling agents), vulcanization accelerators, vulcanization acceleration aids. , Anti-aging agents, processing aids, oils, waxes, resorcinols, resins, viscoelasticity improvers, peptizers, retarders, compounds having oxyethylene units, catalysts (cobalt naphthenate, etc.). Any of the other components may be used alone or in combination of two or more.
- the filler examples include silica, carbon black, aluminum hydroxide, crushed bituminous coal, talc, clay (particularly calcined clay), and titanium oxide.
- the filler only one kind may be used, or two or more kinds may be used in combination.
- silica examples include ( ⁇ ) silica having 1 to 1 of 6 to 8, ( ⁇ ) silica containing 0.2 to 1.5% by weight of sodium, ( ⁇ ⁇ ) roundness Is 1 to 1. ⁇ 02020/175344 33 ⁇ (: 171-1? 2020 /006962
- Silicone oil eg, dimethyl silicone oil
- Organosilicon compound containing ethoxysilyl group Silica surface-treated with alcohol (eg, ethanol, polyethylene glycol)
- alcohol eg, ethanol, polyethylene glycol
- Examples thereof include a mixture of two or more kinds of silica having different surface areas. These may be used alone or in combination of two or more.
- B ET specific surface area of silica is preferably 20 ⁇ 400 m 2 / g, more preferably rather are. 20 to 350 meters 2 / g, more preferably 20 ⁇ 300 m 2 / g.
- This B ET specific surface area can be measured by the multipoint nitrogen adsorption method (B ET method).
- Examples of commercially available silica include “N ipsi I (registered trademark) AQ”, “N ipsi I (registered trademark) AQ—N” manufactured by Tosoh Silica, and “UI trasi I (registered trademark) manufactured by EVON IK. Trademark VN 3”, Ultrasil® VN 3—G”, Ultrasil® 360, UI trasi I® 7000, Ultrasil® 9 100 GR", “Z eosi I (registered trademark) 1 15 GR” manufactured by Solvay,
- Examples thereof include "Zeo s i I (registered trademark) 1 11 15MP”, “Ze o s i l (registered trademark) 1 205 MP", and "Ze o s i l (registered trademark) Z 85 M P".
- silica when silica is used, its amount is preferably 10 to 120 parts by weight, more preferably 20 to 120 parts by weight, and further preferably 20 to 120 parts by weight, per 100 parts by weight of the rubber component, from the viewpoint of abrasion resistance. It is preferably 30 to 120 parts by weight, most preferably 50 to 100 parts by weight.
- Examples of force-black include those described on page 494 of "Rubber Industry Manual, Fourth Edition” edited by Japan Rubber Association. Power Carbon Black
- HA F High A brasion F urnace
- SAF Super A brasion F urnace
- ISAF I nter me diate SA F
- I SA F— HM I nter me diate SA F— H igh Modulus
- FEF Fast E xtru ⁇ 02020/175344 34 ⁇ (: 171?2020/006962
- BET specific surface area of the [0137] force over the carbon black is preferably 1 0 ⁇ 1 30m 2 / g, more preferably 20 ⁇ 1 30m 2 / g, more preferably 40 ⁇ 1 3 Om ⁇ g.
- This B ET specific surface area can be measured by the multipoint nitrogen adsorption method (B ET method).
- the amount thereof is preferably 1 to 120 parts by weight, more preferably 1 to 100 parts by weight, and still more preferably 100 parts by weight of the rubber component from the viewpoint of abrasion resistance. Is 1 to 60 parts by weight, most preferably 1 to 30 parts by weight.
- the weight ratio of the amount of force-black to the amount of silica is preferably 1/120 to 1/1/ from the viewpoint of abrasion resistance. 1, more preferably 1/120 to 3/5, further preferably 1/120 to 1/2, and most preferably 1/100 to 1/5.
- the average particle size of the crushed bituminous coal is preferably 0.001 mm or more, preferably 0.1 mm or less, more preferably 0.05 mm or less, and further preferably 0.01 mm or less. ..
- the average particle size of the crushed bituminous coal is the mass-based average particle size calculated from the particle size distribution measured in accordance with JIS Z 885-15-1994.
- the specific gravity of the pulverized bituminous coal is preferably 1.6 or less, more preferably 1.5 or less, and further preferably 1.3 or less. If a bituminous coal pulverized product having a specific gravity of more than 1.6 is used, the specific gravity of the entire rubber composition is increased, and the fuel economy of the tire may not be sufficiently improved.
- the specific gravity of the crushed bituminous coal is preferably 0.5 or more, 1 ⁇ 02020/175344 35 box (: 171?2020/006962
- bituminous coal pulverized product having a specific gravity of less than 0.5 is used, the workability during kneading may be deteriorated.
- Examples of the compound capable of binding to silica include bis(3-triethoxysilylpropyl)tetrasulfide (eg,
- 3-octanoylthiopropyltriethoxysilane (for example, "Kingosilane” manufactured by General Electronic Silicones Co., Ltd.) is preferable.
- a compound capable of binding to silica when used, its amount is preferably 2 to 20 parts by weight, more preferably 2 to 15 parts by weight, and further preferably 100 parts by weight of silica. It is 2 to 10 parts by weight.
- monohydric alcohols such as ethanol, butanol, and citanol
- a polyvalent alcohol such as 1:1-alkylamine; an amino acid; a liquid polybutadiene having a carboxy-modified or amine-modified molecular terminal may be used.
- vulcanization accelerator for example, those described in the Handbook of Rubber Industry ⁇ 4th edition> (January 20, 1994, Japan Rubber Association) can be used.
- the vulcanization accelerator may be used alone or in combination of two or more.
- examples of the vulcanization accelerator include a sulfenamide-based vulcanization accelerator, a thiazole-based vulcanization accelerator, and a guanidine-based vulcanization accelerator.
- Sulfenamide vulcanization accelerators include, for example, 1 ⁇ 1-cyclohexyl
- 2-benzothiazolylsulfenamid ( ⁇ 3), 1 ⁇ 1 _ ⁇ "-butyl _ 2 -benzothiazolylsulfenamid (Misumi 3), 1 ⁇ 1 _ oxydiethylene _2 -benzothiazoli
- the sulfenamide vulcanization accelerator include rusulfenamide ( ⁇ 3), 1 ⁇ 1, 1 ⁇ 1 _dicyclohexyl 2-benzothiazolylsulfenamid (0 ⁇ 3), etc. You may use only one, two ⁇ 02020/175344 37 ⁇ (: 171? 2020 /006962
- Examples of thiazole-based vulcanization accelerators include 2-mercaptobenzothiazole (IV! Micho), dibenzothiazyldisulfide (IV! Micho 3), 2-mercaptobenzazothiazole cyclohexyl. Amine salts ( ⁇ 1 ⁇ /1 Micho), 2-mercap benzobenzothiazole zinc salt (1 ⁇ /1 Micho), etc. may be mentioned.
- the thiazole-based vulcanization accelerators may be used alone or in combination of two or more.
- Examples of the guanidine-based vulcanization accelerator include diphenyl guanidine ( ⁇ ⁇ ), 1 ⁇ 1, 1 ⁇ 1, zi ⁇ -tolyl guanidine ( ⁇ ⁇ ⁇ ) and the like.
- As the guanidine-based vulcanization accelerator only one kind may be used, or two or more kinds may be used in combination.
- a vulcanization accelerator When a vulcanization accelerator is used, its amount (when two or more vulcanization accelerators are used, the total amount thereof) is preferably 0.5 to 100 parts by weight per 100 parts by weight of the rubber component.
- the amount is 10.5 parts by weight, more preferably 0.7 to 8 parts by weight, and further preferably 0.8 to 5.5 parts by weight.
- the weight ratio between the amount of the sulfur component and the amount of the vulcanization accelerator is not particularly limited, but is preferably 1/10 to 10/1, More preferably, it is 1/5 to 5/1.
- the weight ratio is calculated by using the amount of sulfur component and the total amount of two or more vulcanization accelerators. To calculate.
- vulcanization accelerators include zinc oxide, citraconimide compounds, alkenylphenol-sulfur chloride condensates, organic thiosulfate compounds and formulas.
- ⁇ 2-10 represents an alkanediyl group
- [3 ⁇ 4 16 and [3 ⁇ 4 18 each independently represent a monovalent organic group containing a nitrogen atom.
- zinc oxide is included in the concept of vulcanization acceleration aid, ⁇ 0 2020/175344 38 ⁇ (: 171? 2020 /006962
- the amount thereof is preferably 0.001 to 20 parts by weight, more preferably 0.1 to 15 parts by weight, and further preferably, per 100 parts by weight of the rubber component. Is 0.1 to 10 parts by weight.
- biscitraconimides are preferable because they are thermally stable and have excellent dispersibility in the rubber component. Specifically, 1,2-biscitraconimidomethylbenzene, 1,3-biscitraconimidomethylbenzene, 1,4-biscitraconimidomethylbenzene, 1,6-biscitraconimidomethylbenzene, 2, 3-biscitraconimidomethyltoluene, 2,4-biscitraconimidomethyltoluene, 2,5-biscitraconimidomethyltoluene, 2,6-biscitraconimidomethyltoluene, 1,2-biscitraconimidotoluene Ethylbenzene, 1, 3-biscitraconimidoethylbenzene, 1, 4-biscitraconimidoethylbenzene, 1, 6-biscitraconimidoethylbenzene, 2,
- citraconimide compounds it is possible to obtain a vulcanized rubber composition that is particularly stable thermally, has excellent dispersibility in the rubber component, and has high hardness (1 to 13).
- 1,3-biscitraconimidomethylbenzene represented by the following formula is preferable.
- a vulcanized rubber composition having a high hardness can be obtained as a vulcanization acceleration aid. ⁇ 2020/175 344 39
- n is an integer from 0 to 10 and X is an integer from 2 to 4,
- n in the formula ( ⁇ V) is preferably an integer of 1 to 9.
- the alkylphenol-sulfur chloride condensate ( ⁇ V) tends to be thermally unstable, and when X is 1, the alkylphenol-sulfur chloride condensate (IV) is Has a low sulfur content (sulfur weight).
- X is preferably 2 for the reason that high hardness can be efficiently expressed (reversion suppression).
- ⁇ is a 2 alkyl group. Because of the good dispersibility of the alkylphenol-sulfur chloride condensate ( ⁇ V) in the rubber component, Is preferably a 0-6-9 alkyl group.
- the door in the formula (IV) is 0 to 10
- X is 2
- a vulcanized rubber composition having a high hardness can be obtained as a vulcanization accelerating aid. ⁇ 02020/175344 40 units (: 171?2020/006962
- organic thiosulfate compound salt (V) An organic thiosulfate compound salt (V) containing crystal water may be used.
- organic thiosulfate compound salt (V) examples include lithium salt, potassium salt, sodium salt, magnesium salt, calcium salt, barium salt, zinc salt, nickel salt and cobalt salt, and potassium salt, sodium salt. Is preferred.
- 3 is an integer of 3 to 10, preferably an integer of 3 to 6. When 3 is 2 or less, sufficient heat fatigue resistance tends not to be obtained, and when 3 is 11 or more, the effect of improving the heat fatigue resistance by the organic thiosulfate compound salt (V) may not be sufficiently obtained. is there.
- organic thiosulfate compound salt (V) its sodium salt monohydrate and sodium salt dihydrate are preferable from the viewpoint of being stable at room temperature and normal pressure, and sodium thiosulfate is preferable from the viewpoint of cost.
- the obtained organic thiosulfuric acid compound salt (V) is more preferable, and 1,6-hexamethylene dithiothiosulfate sodium dihydrate represented by the following formula is further preferable.
- R 17 represents a C 2-10 alkanediyl group
- R 16 and R 18 each independently represent a monovalent organic group containing a nitrogen atom.
- R 17 is ⁇ 2-!. It is an alkanediyl group, preferably a C 4-8 alkanediyl group, and more preferably a linear C 4 — 8 alkanediyl group. R 17 is preferably linear. When the carbon number of R 17 is 1 or less, thermal stability may be poor. When the carbon number of R 17 is 11 or more, the distance between the polymers via the vulcanization accelerator becomes long, and the effect of adding the vulcanization accelerator may not be obtained.
- R 16 and R 18 are each independently a monovalent organic group containing a nitrogen atom.
- R 16 and R 18 may be the same or different, but are preferably the same for reasons such as ease of production.
- Examples of the compound ( ⁇ ) include 1,2-bis(dibenzylthiocarbamoyldithio)ethane, 1,3-bis(dibenzylthiocarbamoyldithio)propane, 1,4-bis(dibenzylthio) Benzylthiocarbamoyldithio)butane, 1,5-bis(dibenzylthiocarbamoyldithio)pentane, 1,6-bis(dibenzylthiocarbamoyldithio)hexane, 1,7-bis(dibenzylthiocarbamoyldithio)heptane, 1 , 8-bis(dibenzylthiocarbamoyldithio)octane, 1,9-bis(dibenzylthiocarbamoyldithio)nonane, 1,10_bis(dibenzylthiocarb
- Examples of commercially available compounds ( ⁇ ) include VU LCU manufactured by Bayer.
- VPKA 91 88 (1,6-bis(dibenzylthiocarbamoyldithio)hexane).
- antiaging agent examples include those described on pages 436 to 443 of "Rubber Industry Manual, Fourth Edition", edited by Japan Rubber Association.
- antiaging agent examples include N-phenyl N,-1, 3 -dimethylputilu p _phenylenediamine (abbreviation "6 P P D", for example "Antigen (registered trademark) 6C” manufactured by Sumitomo Chemical Co., Ltd.
- TMDQ reaction product of aniline and acetone
- poly (2, 2, 4-trimethyl-1, 2, 2-)dihydroquinoline) for example, "Antioxidant FR” manufactured by Matsubara Sangyo Co., Ltd.
- synthetic wax Paraffin wax and the like, and vegetable wax are preferably used.
- an antioxidant when used, its amount is preferably 0.01 to 15 parts by weight, more preferably 0.1 to 10 parts by weight, and more preferably 0.1 to 15 parts by weight, based on 100 parts by weight of the rubber component. It is preferably 0.1 to 5 parts by weight.
- processing aids include fatty acids such as ricinoleic acid, palmitic acid, stearic acid, oleic acid, and palmitic acid, their esters and amids, zinc stearate, barium stearate, calcium stearate, and zinc laurate.
- processing aids include fatty acid metal salts.
- commercially available products include "ST RUKT 0 L A50 P”, “ST RU KTOL A60", “ST RU KT 0 LE F44”, and “ST RU KT 0 L A50 P” manufactured by S CH ILL & SEI LACH ER Gm b h. & C ⁇ . RU KTOL 204”, “ST RU KT ⁇ L HT 207”, “ST RU KTOL HT 254”, “ST RU KT ⁇ L HT 266”, “ST RU KTOL WB 16”, etc.
- a processing aid When a processing aid is used, its amount is preferably 0.01 to 20 parts by weight, more preferably 0.1 to 15 parts by weight, and still more preferably 0 per 100 parts by weight of the rubber component. .1 to 10 parts by weight.
- It is preferably 0.01 to 15 parts by weight, more preferably 0.1 to 10 parts by weight, and still more preferably 0.1 to 5 parts by weight per part by weight.
- oils examples include process oils and vegetable oils and fats.
- process oils include paraffinic process oils, naphthenic process oils, aromatic process oils, 1 ⁇ /1 M3 (slightly extracted solvate) oil, Dixi (processed distillate aromatic oil) Extract) An oil is mentioned.
- Commercially available products include, for example, aromatic oil (“1 ⁇ 10 1 140” manufactured by Cosmo Oil Co., Ltd.)
- Process oil (“Diana Process 3 3 2” manufactured by Idemitsu Kosan Co., Ltd.), Ding Hachimi oil ) Is mentioned.
- the amount thereof is preferably 5 to 70 parts by weight, more preferably 20 to 60 parts by weight, per 100 parts by weight of the rubber component.
- wax examples include “Sannoc (registered trademark) wax” manufactured by Ouchi Shinko Chemical Industry Co., Ltd. and “0800 __ 0 3 5 5" manufactured by Nippon Seiro Co., Ltd.
- resins such as resorcinol, resorcinol resin, modified resorcinol resin, cresol resin, modified cresol resin, phenol resin and modified phenol resin may be used.
- resorcinol or these resins, the elongation at break and complex elastic modulus of the vulcanized rubber composition can be improved.
- Examples of resorcinol include resorcinol manufactured by Sumitomo Chemical Co., Ltd.
- the resorcinol resin include a resorcinol-formaldehyde aldehyde condensate.
- Examples of the modified resorcinol resin include those obtained by alkylating a part of the repeating units of the resorcinol resin. Specifically, Penacolite resin Minaichi 18-3, Inamispec Inc. 18-3, Minaichi 20. Sumikanol 620 manufactured by Taoka Chemical Co., Ltd., Uniroyal ⁇ 02020/175344 44 ⁇ (: 171? 2020 /006962
- cresol resin examples include cresol-formaldehyde condensate.
- modified cresol resin examples include a cresol resin in which the terminal methyl group is changed to a hydroxy group, and a cresol resin in which a part of repeating units is alkylated. Specific examples include Sumikanol 610 manufactured by Taoka Chemical Co., Ltd., and [3 ⁇ 4-110 1 061 manufactured by Sumitomo Bakelite Co., Ltd.].
- Examples of the phenol resin include phenol-formaldehyde condensate.
- Examples of the modified phenol resin include resins obtained by modifying the phenol resin with cashew oil, guar oil, linseed oil, various animal and vegetable oils, unsaturated fatty acids, rosin, alkylbenzene resins, aniline, melamine and the like.
- Examples of other resins include, for example, methoxylated methylol melamine resin such as "Sumikanol 507-8” manufactured by Sumitomo Chemical Co., Ltd.; coumarone resin N04 manufactured by Nittetsu Chemical Co., Ltd. (softening point 81 to 100 ° ⁇ ), "Process resin 85,” manufactured by Kobe Oil Chemicals Co., Ltd.
- viscoelasticity improving agent examples include 1 ⁇ 1, 1 ⁇ 1'-bis (2-methyl-2-dichloropropyl)-1,6-hexanediamine (for example, Sumifane (registered trademark) 1 manufactured by Sumitomo Chemical Co., Ltd. 1 62” ), a dithiouracil compound described in JP-A No. 63-23942, “Tacchiroll (registered trademark) 8” manufactured by Taoka Chemical Industry Co., Ltd.
- the saccharifier there are no particular limitations on the saccharifier as long as it is one commonly used in the rubber field. For example, it is described on pages 446 to 449 of "Rubber Industry Manual, Fourth Edition", edited by the Japan Rubber Association. Aromatic mercaptan syrup disintegrators, aromatic disulfide syrup scavengers, and aromatic mercaptan metal salt syrup scavengers. Among them, dixylyl disulfide, ⁇ , ⁇ '- ⁇ 02020/175344 46 ⁇ (: 171?2020/006962
- the quick disintegrating agent may be used alone or in combination of two or more kinds.
- the amount thereof should be 0 per 100 parts by weight of the rubber component.
- 0 to 1 part by weight is preferable, and 0.05 to 0.5 part by weight is more preferable.
- retarder examples include phthalic anhydride, benzoic acid, salicylic acid, —nitrosodiphenylamine, 1 ⁇ 1— (cyclohexylthio) phthalimide ( ⁇ ), sulfone amide derivative, diphenylurea, bis(tridecyl) pentaerythritol diphosphite.
- examples include 1 ⁇ 1 _ (cyclohexylthio) phthalimide (0).
- 0 to 1 part by weight is preferable, and 0.05 to 0.5 part by weight is more preferable.
- the position of the oxyethylene unit in the compound having the oxyethylene unit may be the main chain, the terminal, or the side chain.
- the compounds having oxyethylene unit in at least the side chain are preferable from the viewpoints of sustainability of the effect of preventing static electricity accumulation on the tire surface and reduction of electric resistance.
- Examples of the compound having an oxyethylene unit in the main chain include polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, monoethylene glycol, diethylene glycol, and triethylene glycol. ⁇ 02020/175344 47 ⁇ (: 171?2020/006962
- Examples thereof include coal, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylamine, polyoxyethylene styrenated alkyl ether, and polyoxyethylene alkyl amide.
- the number of oxyethylene units is preferably 4 or more per 100 carbon atoms constituting the main chain, and more preferably 8 or more. preferable. If the number of oxyethylene units is 3 or less, the electric resistance tends to increase.
- the number of oxyethylene units is preferably 12 or less, more preferably 10 or less. When the number of ethylene ethylene units is 13 or more, the compatibility with the rubber component and the reinforcing property tend to decrease.
- its main chain is preferably composed mainly of polyethylene, polypropylene or polystyrene.
- the vulcanized rubber composition of the present invention is kneaded with a compound ( ⁇ ), a rubber component and a sulfur component, and optionally a compound ( ⁇ ) and/or other components (for example, silica, carbon black), It can be produced by heating the obtained rubber composition.
- a compound ( ⁇ ) is considered to be consumed during kneading or heating, the compound (I) is calculated as the total amount of the predetermined amount and the predicted consumption amount (that is, the predetermined amount and the predicted consumption amount).
- the vulcanized rubber composition of the present invention can be produced. The same applies when a compound ( ⁇ ) is used.
- Compound (I) a rubber composition obtained by kneading a rubber component and a sulfur component (hereinafter sometimes referred to as "a rubber composition containing a sulfur component”) is a filler (for example, silica). , Carbon black), it is preferable to manufacture it through steps 1 and 2 below:
- Step 2 of kneading the rubber composition obtained in Step 1, the sulfur component, and optionally other components.
- a pre-kneading step of masticating the rubber component may be provided in order to facilitate processing of the rubber component.
- the entire amount of the compound ( ⁇ ) may be kneaded with the rubber component or the like in either the preliminary kneading step, Step 1 or Step 2. Each of them may be divided and kneaded with the rubber component and the like in at least two steps from the preliminary kneading step to the step 2. Further, the compound ( ⁇ ) may be supported on the above-mentioned filler in advance and then kneaded with the rubber component and the like.
- compound (II) when compound (II) is used, in the production of a rubber composition containing a sulfur component, the entire amount of the compound ( ⁇ ) is added to the rubber component in the pre-kneading step, step 1 or step 2.
- the compound (II) may be divided and kneaded with the rubber component and the like in at least two steps from the preliminary kneading step to the step 2.
- the compound ( ⁇ ) may be supported on the above-mentioned filler in advance and then kneaded with the rubber component and the like.
- step 1 When blending zinc oxide, it is preferable to knead it with the rubber component and the like in step 1.
- step 1 When mixing stearic acid, it is preferable to knead it with the rubber component and the like in step 1.
- step 2 When blending the vulcanization accelerator, it is preferable to knead it with the rubber component and the like in step 2.
- the peptizer When the peptizer is added, it is preferable to knead it with the rubber component and the like in step 1.
- a pre-kneading step either the total amount of the peptizing agent and the rubber component are kneaded in the pre-kneading step, or the peptizing agent is separated and part of it is used in both the pre-kneading step and step 1. It is preferable to knead with a gum component. When compounding the retarder, it is preferable to knead it with the rubber component and the like in step 2.
- an internal mixer including a Banbury mixer, a talented-type kneader, a pressure kneader, an extruder, an injection molding machine and the like can be used.
- Discharge of rubber composition after kneading in step 1 ⁇ 02020/175344 49 ⁇ (: 171?2020/006962
- the temperature is preferably 200°C or lower, more preferably 120 to 180°°.
- the kneading temperature in step 2 (the temperature of the rubber composition being kneaded) is preferably 60 to 120°.
- the vulcanized rubber composition of the present invention can be produced by vulcanizing the rubber composition containing the sulfur component.
- the vulcanized rubber composition of the present invention may be produced by processing a rubber composition containing a sulfur component into a specific shape and then vulcanizing it.
- vulcanization temperature is 1 2 0 ⁇ 1 8 0 ° ⁇ preferred.
- Those skilled in the art can appropriately set the vulcanization time according to the composition of the rubber composition. Vulcanization is usually performed under normal pressure or pressure.
- the vulcanized rubber composition of the present invention has excellent wear resistance, it is preferably used for tires. Therefore, the present invention provides a tire containing the vulcanized rubber composition.
- the vulcanized rubber composition of the present invention is preferably used for a tire member.
- the tire member include a tire belt member including the vulcanized rubber composition of the present invention and a steel cord, a vulcanized rubber composition of the present invention and a force-casing force-tire member for a tire including a fiber cord, and a tire size.
- Examples include dwall members, inner liner members for tires, cap tread members for tires, and undertread members for tires.
- the vulcanized rubber composition of the present invention can be used in various products (for example, anti-vibration rubber, rubber for conveyor belts, engine mount rubber, etc.) in addition to tires and tire members.
- the mixture in the kneader was kneaded at a rotation speed of 50° for 3.5 minutes and then at a rotation speed of 80° for 1.5 minutes.
- the temperature of the rubber composition at the end of the kneading was 1 It was 60 to 170 ° ⁇ .
- a vulcanized rubber composition was obtained by heating the rubber composition obtained in step 2 at 170° for 12 minutes.
- Example 2 except that the types and amounts of the components shown in Table 1 were used in Steps 1 and 2 and the vulcanization time for obtaining the vulcanized rubber composition was changed. Vulcanized rubber compositions of 5 and Comparative Example 1 were obtained.
- the vulcanization time was 12 minutes in Example 1 and Comparative Example 1, and in Example 2 and 5,
- the hardness of the vulcanized rubber compositions of Examples 1 to 5 and the hardness of the vulcanized rubber composition of Comparative Example 1 were set to be the same as in Examples. From 1 to 5, the amount of powdered sulfur, Omi 3 and O was adjusted.
- the obtained analysis solution (3) was injected into a liquid chromatography (!_ ⁇ device (“!_0 20” manufactured by Shimadzu Corp.), and the column was used as “!_ — ⁇ ⁇ Iri ⁇ 1 ⁇ 003 (4 .6011110X 150, particle size 5)” and two mobile solutions as mobile phase (liquid and sol.)
- a liquid chromatography !_ ⁇ device (“!_0 20” manufactured by Shimadzu Corp.
- the column was used as “!_ — ⁇ ⁇ Iri ⁇ 1 ⁇ 003 (4 .6011110X 150, particle size 5)” and two mobile solutions as mobile phase (liquid and sol.)
- an aqueous solution of trifluoroacetic acid concentration ⁇ .05wt% was used.
- a solution of trifluoroacetic acid in acetonitrile concentration: 0.05% by weight
- the gradient condition of the solution was “0 min: 5% by volume, ⁇ -40 minutes: 5% by volume to 100% at a constant rate
- Amount of vulcanized rubber composition (approx. 29) x 13)
- 3 represents the concentration (9/1_) of the standard sample
- ⁇ represents the area value of the detection peak of the standard sample
- ⁇ represents the analysis solution (that is, the diluted extraction solution). It represents the total amount (1111_).
- the vulcanized rubber compositions of Examples 1 to 5 containing the compound (I) in a predetermined amount have excellent wear resistance.
- Laboplast mill manufactured by Toyo Seiki Seisakusho Co., Ltd., capacity: 600 1_ was used to make a styrene-butadiene copolymer rubber (Asahi Kasei's “3 Mitsu Tafuden 2000”).
- Topyrimidine 2 parts by weight was kneaded to obtain a rubber composition.
- the temperature was set to 140° and the mixture in the Laboplast mill was mixed with the mixture in the Laboplast mill after the ingredients were added to the Laboplast mill rotating at a rotational speed of 25°. Evening rotation speed was 10 k for 3 minutes and mouth rotation was 60 k for 5 minutes.
- the rubber composition temperature at the end of kneading was 1 55 to 1 65 5 °. It was
- a vulcanized rubber composition was obtained by heating the rubber composition obtained in step 2 at 170° for 14 minutes.
- Examples 7 to 12 and Comparative Examples were performed in the same manner as in Example 6 except that the types and amounts of the components shown in Tables 2 and 3 were used, and the vulcanization time for obtaining the vulcanized rubber was changed. A vulcanized rubber composition of 2 was obtained.
- Example 6 The same styrene-butadiene copolymer rubber as in Example 6 was used.
- Vulcanization time was 14 minutes for Examples 7, 10 and 11; 36 minutes for Examples 8 and 12; 21 minutes for Example 9; 20 minutes for Example 13; In Comparative Example 2, it was set to 9 minutes.
- the compound (I 3 -2) the one obtained in Production Example 2 was used.
- the compound ( ⁇ ⁇ 13 _ 1) "2,2'-dipyridyl disulfide” manufactured by Tokyo Chemical Industry Co., Ltd. was used.
- the compound ( ⁇ 13-2) “2,2′-dithiopis (5-nitropyridine)” manufactured by Tokyo Chemical Industry Co., Ltd. was used.
- the compound (II 0 -1) "4,4'-dipyridyldisulfide” manufactured by Tokyo Chemical Industry Co., Ltd. was used.
- Example 8 Since the hardness of the vulcanized rubber composition of Example 8 was similar to that of the vulcanized rubber composition of Comparative Example 1, the abrasion resistance index of the vulcanized rubber composition was determined in the same manner as in Example 1 and the like. Was calculated. Specifically, the following formula:
- Example 2 Since it was not equivalent to the hardness of the vulcanized rubber composition of Example 1, the amounts of powdered sulfur, 0, 3 and 0° were adjusted so that a vulcanized rubber composition having a hardness similar to that of Example 6 was obtained. An adjusted Comparative Example 2 was performed. Then, the abrasion volume (unit: ⁇ ! 3 ) of the vulcanized rubber composition was measured in the same manner as in Example 1 and the like, and the following formula:
- the vulcanized rubber composition of 6 to 12 has excellent wear resistance.
- Example 1 was carried out in the same manner as in Example 1 except that the types and amounts of the components shown in Table 4 were used in Steps 1 and 2 of Example 1 and the vulcanization time for obtaining the vulcanized rubber was changed. Vulcanized rubber compositions of Example 13 and Comparative Example 3 were obtained. ⁇ 02020/175344 60 ((171?2020/006962
- Example 4 In the same manner as in Example 1 and the like, the contents of the compound (I) and the compound ( ⁇ ) in the vulcanized rubber composition obtained in Example 13 were measured and calculated. The results are shown in Table 4.
- Example 13 Since the hardness of the vulcanized rubber composition obtained in Example 13 was not equal to the hardness of the vulcanized rubber compositions of Comparative Examples 1 and 2, the vulcanized rubber composition of which hardness was equivalent to that of Example 13 was obtained. Comparative Example 3 was performed in which the amounts of powdered sulfur, 0 63 and 0° were adjusted so that a rubber composition was obtained. Then, the abrasion volume (unit: ⁇ ! 3 ) of the vulcanized rubber composition was measured in the same manner as in Example 1 and the following formula:
- the vulcanized rubber composition of Example 13 containing the compound (I) in a predetermined amount has excellent wear resistance.
- Example 1 was carried out in the same manner as in Example 1 except that the types and amounts of the components shown in Table 5 were used in Steps 1 and 2 of Example 1, and the vulcanization time for obtaining the vulcanized rubber was changed. Vulcanized rubber compositions of Example 14 and Comparative Example 4 were obtained.
- the styrene-butadiene copolymer rubber is manufactured by Nippon Zeon Co., Ltd. "1 ⁇ 1 ⁇ ⁇ ⁇ N 3
- the vulcanization time was 60 minutes in Example 14 and 40 minutes in Comparative Example 4.
- Example 14 The compound in the vulcanized rubber composition obtained in Example 14 in the same manner as in Example 1 etc. ⁇ 0 2020/175 344 62 ⁇ (: 171? 2020 /006962
- Example 14 Since the hardness of the vulcanized rubber composition obtained in Example 14 was not equal to that of the vulcanized rubber composition of Comparative Example 1, the vulcanized rubber composition having a hardness similar to that of Example 14 was obtained. Comparative Example 4 was performed in which the amounts of powdered sulfur, 0 63 and 0° were adjusted so as to obtain a product. Then, the abrasion volume of the vulcanized rubber composition (unit: Measure the following formula:
- the vulcanized rubber composition of Example 14 containing the compound (I) in a predetermined amount has excellent wear resistance. ⁇ 02020/175344 63 ⁇ (: 171?2020/006962
- Example 1 was carried out in the same manner as in Example 1 except that the types and amounts of the components shown in Table 6 were used in Steps 1 and 2 of Example 1 and the vulcanization time for obtaining the vulcanized rubber was changed. Vulcanized rubber compositions of Example 15 and Comparative Example 5 were obtained.
- Styrene-butadiene copolymer rubber is manufactured by Asahi Kasei Corp.
- the vulcanization time was 15 minutes in Example 15 and Comparative Example.
- Example 15 The content of the compound (I) in the vulcanized rubber composition obtained in Example 15 was measured and calculated in the same manner as in Example 1 and the like. The results are shown in Table 6.
- Example 15 Since the hardness of the vulcanized rubber composition obtained in Example 15 was not equal to that of the vulcanized rubber composition of Comparative Example 1, the vulcanized rubber composition having a hardness similar to that of Example 15 was obtained. Comparative Example 5 was performed in which the amounts of powdered sulfur, 0 63 and 0° were adjusted so that the product was obtained. Then, the abrasion volume of the vulcanized rubber composition (unit: Measure the following formula:
- Example 15 As shown in Table 6, the vulcanized rubber composition of Example 15 containing the compound (I) in a predetermined amount has excellent wear resistance.
- Example 1 was carried out in the same manner as in Example 1 except that the types and amounts of the components shown in Table 7 were used in Steps 1 and 2 of Example 1 and the vulcanization time for obtaining the vulcanized rubber was changed. Vulcanized rubber compositions of Example 16 and Comparative Example 6 were obtained.
- the styrene-butadiene copolymer rubber is manufactured by Nippon Zeon Co., Ltd.
- N 3 6 1 2 was used.
- the same butadiene rubber as in Example 1 was used.
- “2-Mercaptopyridine” manufactured by Tokyo Kasei Kogyo Co., Ltd. was used as the compound ( ⁇ b- ⁇ ).
- the vulcanization time was 15 minutes in Example 16 and Comparative Example 6.
- Example 16 The content of the compound (I) in the vulcanized rubber composition obtained in Example 16 was measured and calculated in the same manner as in Example 1 and the like. The results are shown in Table 7.
- Example 16 Since the hardness of the vulcanized rubber composition obtained in Example 16 was not equal to that of the vulcanized rubber composition of Comparative Example 1, the vulcanized rubber composition having a hardness similar to that of Example 16 was obtained. Comparative Example 6 was performed in which the amounts of powdered sulfur, 0 63 and 0° were adjusted so as to obtain a product. Then, the abrasion volume of the vulcanized rubber composition (unit: Measure the following formula:
- Example 16 As shown in Table 7, the vulcanized rubber composition of Example 16 containing the compound (I) in a predetermined amount has excellent wear resistance.
- Example 1 except that the types and amounts of the components shown in Table 8 were used in steps 1 and 2 of Example 1 and that the vulcanization time to obtain the vulcanized rubber was changed. ⁇ 0 2020/175 344 66 ⁇ (: 171? 2020 /006962
- Example 17 vulcanized rubber compositions of Example 17 and Comparative Example 7 were obtained.
- Styrene-Butadiene copolymer rubber is manufactured by Nippon Zeon Co., Ltd. “1 ⁇ 1 ⁇ I
- Example 2 N 3540 was used. The same thing as in Example 1 was used as butadiene rubber. “2-Mercapto pyridine” manufactured by Tokyo Kasei Kogyo Co., Ltd. was used as the compound ( ⁇ b- ⁇ ). “2,2'-dipyridyldisulfide” manufactured by Tokyo Kasei Kogyo Co., Ltd. was used as the compound ( ⁇ ⁇ 13 _ 1).
- the vulcanization time was 15 minutes in Example 17 and Comparative Example 7.
- Example 8 In the same manner as in Example 1 and the like, the contents of the compound (I) and the compound ( ⁇ ) in the vulcanized rubber composition obtained in Example 17 were measured and calculated. The results are shown in Table 8.
- Example 17 Since the hardness of the vulcanized rubber composition obtained in Example 17 was not equal to the hardness of the vulcanized rubber composition of Comparative Example 1, the vulcanized rubber composition having a hardness similar to that of Example 17 was obtained. Comparative Example 7 was performed in which the amounts of powdered sulfur, 0 63 and 0° were adjusted so as to obtain a product. Then, the abrasion volume of the vulcanized rubber composition (unit: Measure the following formula:
- Example 17 As shown in Table 8, the vulcanized rubber composition of Example 17 containing the compound (I) in a predetermined amount has excellent wear resistance.
- a rubber composition can be obtained by kneading the sulfur, the vulcanization accelerator aid, and the components other than the vulcanization accelerator shown in Table 9 in the amounts shown in Table 9 with a Banbury mixer at 1 65 ° for 4 minutes. ..
- Styrene-Butadiene Copolymer Rubber 2 Asahi Kasei “3M Tafuden 3835”
- Styrene-Butadiene Copolymer Rubber 3 Made by Nippon Zeon Co., Ltd. "1 ⁇ 1 ⁇ 3 ⁇ ⁇ 3540"
- the vulcanized rubber composition of the present invention has excellent wear resistance and is useful for producing tires and the like. ⁇ 02020/175344 69 ⁇ (: 17 2020 /006962
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Abstract
Description
Claims
Priority Applications (5)
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CN202080016786.XA CN113490607A (zh) | 2019-02-27 | 2020-02-21 | 硫化橡胶组合物 |
JP2021502163A JP7377850B2 (ja) | 2019-02-27 | 2020-02-21 | 加硫ゴム組成物 |
EP20762179.8A EP3932691A4 (en) | 2019-02-27 | 2020-02-21 | VULCANIZED RUBBER COMPOSITION |
KR1020217028941A KR20210132081A (ko) | 2019-02-27 | 2020-02-21 | 가황 고무 조성물 |
US17/433,214 US20220119623A1 (en) | 2019-02-27 | 2020-02-21 | Vulcanized rubber composition |
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EP (1) | EP3932691A4 (ja) |
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KR (1) | KR20210132081A (ja) |
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Cited By (2)
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WO2022065449A1 (ja) * | 2020-09-28 | 2022-03-31 | 住友化学株式会社 | 加硫ゴム組成物及びタイヤ |
WO2022259678A1 (ja) * | 2021-06-11 | 2022-12-15 | 横浜ゴム株式会社 | タイヤ用ゴム組成物 |
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KR20210132081A (ko) | 2021-11-03 |
CN113490607A (zh) | 2021-10-08 |
US20220119623A1 (en) | 2022-04-21 |
JP7377850B2 (ja) | 2023-11-10 |
TWI834817B (zh) | 2024-03-11 |
EP3932691A1 (en) | 2022-01-05 |
EP3932691A4 (en) | 2022-11-23 |
TW202043351A (zh) | 2020-12-01 |
JPWO2020175344A1 (ja) | 2020-09-03 |
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