JP6891689B2 - タイヤ用ゴム組成物の製造方法およびタイヤの製造方法 - Google Patents
タイヤ用ゴム組成物の製造方法およびタイヤの製造方法 Download PDFInfo
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- JP6891689B2 JP6891689B2 JP2017140901A JP2017140901A JP6891689B2 JP 6891689 B2 JP6891689 B2 JP 6891689B2 JP 2017140901 A JP2017140901 A JP 2017140901A JP 2017140901 A JP2017140901 A JP 2017140901A JP 6891689 B2 JP6891689 B2 JP 6891689B2
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- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 description 1
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 description 1
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- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- FSPIGXNLDXWYKZ-UHFFFAOYSA-N CCO[Si](CCC[S+]=C(N(C)C)SSSSC(N(C)C)=[S+]CCC[Si](OCC)(OCC)OCC)(OCC)OCC Chemical compound CCO[Si](CCC[S+]=C(N(C)C)SSSSC(N(C)C)=[S+]CCC[Si](OCC)(OCC)OCC)(OCC)OCC FSPIGXNLDXWYKZ-UHFFFAOYSA-N 0.000 description 1
- MULMLDVWWLPGNR-UHFFFAOYSA-N CC[S+]=C(N(C)C)SSSSC(N(C)C)=[S+]CC Chemical compound CC[S+]=C(N(C)C)SSSSC(N(C)C)=[S+]CC MULMLDVWWLPGNR-UHFFFAOYSA-N 0.000 description 1
- FRNSDZWYJXCLJB-UHFFFAOYSA-N CN(C)C(SSSSC(N(C)C)=[S+]CCC[SiH3])=[S+]CCC[SiH3] Chemical compound CN(C)C(SSSSC(N(C)C)=[S+]CCC[SiH3])=[S+]CCC[SiH3] FRNSDZWYJXCLJB-UHFFFAOYSA-N 0.000 description 1
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- HECLRDQVFMWTQS-UHFFFAOYSA-N Dicyclopentadiene Chemical compound C1C2C3CC=CC3C1C=C2 HECLRDQVFMWTQS-UHFFFAOYSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- ORAWFNKFUWGRJG-UHFFFAOYSA-N Docosanamide Chemical compound CCCCCCCCCCCCCCCCCCCCCC(N)=O ORAWFNKFUWGRJG-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000006237 Intermediate SAF Substances 0.000 description 1
- 102100037644 Kelch-like protein 41 Human genes 0.000 description 1
- 108050003242 Kelch-like protein 41 Proteins 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XJXROGWVRIJYMO-SJDLZYGOSA-N Nervonic acid Natural products O=C(O)[C@@H](/C=C/CCCCCCCC)CCCCCCCCCCCC XJXROGWVRIJYMO-SJDLZYGOSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
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- 238000000862 absorption spectrum Methods 0.000 description 1
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- 239000004480 active ingredient Substances 0.000 description 1
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- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 125000000480 butynyl group Chemical group [*]C#CC([H])([H])C([H])([H])[H] 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- GWHCXVQVJPWHRF-UHFFFAOYSA-N cis-tetracosenoic acid Natural products CCCCCCCCC=CCCCCCCCCCCCCCC(O)=O GWHCXVQVJPWHRF-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
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- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 125000003493 decenyl group Chemical group [H]C([*])=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])[H] 0.000 description 1
- 125000005070 decynyl group Chemical group [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#C* 0.000 description 1
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 1
- GSYVJAOBRKCNOT-UHFFFAOYSA-N diethoxymethyl-[3-[3-(diethoxymethylsilyl)propyltetrasulfanyl]propyl]silane Chemical compound CCOC(OCC)[SiH2]CCCSSSSCCC[SiH2]C(OCC)OCC GSYVJAOBRKCNOT-UHFFFAOYSA-N 0.000 description 1
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 1
- 125000003438 dodecyl group Chemical group [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])* 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005446 heptyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000005980 hexynyl group Chemical group 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000002510 isobutoxy group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])O* 0.000 description 1
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 125000001421 myristyl 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])[H] 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 125000003506 n-propoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000006611 nonyloxy group Chemical group 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
- 125000005447 octyloxy group Chemical group [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])O* 0.000 description 1
- 125000005069 octynyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C#C* 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- NPKKRSHVJIQBKU-UHFFFAOYSA-N ornogenin Natural products CC(OC(=O)C=Cc1ccccc1)C2(O)CCC3(O)C4(O)CC=C5CC(O)CCC5(C)C4CC(OC(=O)C=Cc6ccccc6)C23C NPKKRSHVJIQBKU-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000002958 pentadecyl 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])[H] 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000005981 pentynyl group Chemical group 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000006410 propenylene group Chemical group 0.000 description 1
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- GPNLWUFFWOYKLP-UHFFFAOYSA-N s-(1,3-benzothiazol-2-yl)thiohydroxylamine Chemical compound C1=CC=C2SC(SN)=NC2=C1 GPNLWUFFWOYKLP-UHFFFAOYSA-N 0.000 description 1
- 125000005920 sec-butoxy group Chemical group 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 229940052367 sulfur,colloidal Drugs 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 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
- ASAOXGWSIOQTDI-UHFFFAOYSA-N triethoxy-[2-(2-triethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCSSSSCC[Si](OCC)(OCC)OCC ASAOXGWSIOQTDI-UHFFFAOYSA-N 0.000 description 1
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- KLFNHRIZTXWZHT-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltrisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSCCC[Si](OCC)(OCC)OCC KLFNHRIZTXWZHT-UHFFFAOYSA-N 0.000 description 1
- JSXKIRYGYMKWSK-UHFFFAOYSA-N trimethoxy-[2-(2-trimethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CO[Si](OC)(OC)CCSSSSCC[Si](OC)(OC)OC JSXKIRYGYMKWSK-UHFFFAOYSA-N 0.000 description 1
- JTTSZDBCLAKKAY-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSSSCCC[Si](OC)(OC)OC JTTSZDBCLAKKAY-UHFFFAOYSA-N 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 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
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- 125000006839 xylylene group Chemical group 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
[1]少なくとも2種類のゴム成分を含むゴム成分(A)、下記式(1)で表される化合物(B)、およびメルカプト基を有するシランカップリング剤(C)を含有するタイヤ用ゴム組成物の製造方法であって、
前記ゴム成分(A)のうちの第1のゴム成分と前記化合物(B)とを混練りする工程X1、
前記工程X1で得られる混練物に前記シランカップリング剤(C)を加えて混練りする工程X2、ならびに
前記工程X2で得られる混練物に前記ゴム成分(A)のうちの第2のゴム成分を加えて混練りする工程X3
を含み、前記第1のゴム成分のメルカプト基に対する活性化能力が前記第2のゴム成分よりも小さいものであるタイヤ用ゴム組成物の製造方法
[2]前記ゴム成分(A)中、スチレン含有量が25〜50質量%、好ましくは28〜47質量%、より好ましくは31〜44質量%であり、ビニル結合量が10〜35モル%、好ましくは12〜33モル%、より好ましくは14〜31モル%であるジエン系ゴムを50質量%以上、好ましくは60質量%、より好ましくは70質量%含む上記[1]記載の製造方法、
[3]前記スチレン含有量が前記ビニル結合量の2倍以上、好ましくは2.2倍以上である上記[2]記載の製造方法、
[4]メルカプト基を有するシランカップリング剤が、下記式(2)で表される化合物、および/または下記式(3)で表される結合単位Aと下記式(4)で表される結合単位Bとを含む化合物である上記[1]〜[3]のいずれかに記載の製造方法
[5]上記[1]〜[4]のいずれかに記載の製造方法で得られるタイヤ用ゴム組成物の加硫前の段階でタイヤ用部材を成形し、他のタイヤ用部材と組み合わせて生タイヤを成形する工程と、前記成形工程で得られた生タイヤを加硫する加硫工程とを含むタイヤの製造方法、
[6]少なくとも2種のゴム成分を含むゴム成分(A)、下記式(1)で表される化合物(B)、およびメルカプト基を有するシランカップリング剤(C)を含有するタイヤ用ゴム組成物であって、
前記ゴム成分(A)のうちの第1のゴム成分と前記化合物(B)とを混練りして得られる混練物に前記シランカップリング剤(C)を加えて混練りし、その後得られる混練物に前記ゴム成分(A)のうちの第2のゴム成分を加えて混練りすることにより得られ、前記第1のゴム成分のメルカプト基に対する活性化能力が前記第2のゴム成分よりも小さいものであるタイヤ用ゴム組成物
[7]上記[6]記載のタイヤ用ゴム組成物で構成されるタイヤ用部材を備えるタイヤ
に関する。
SBR1:トリンセオ社製のSLR6430(メルカプト基の活性化能力指数:90、S−SBR、スチレン含有量:40質量%、ビニル結合量:18モル%、ゴム成分100質量部に対しオイル分37.5質量部を含む油展品)
SBR2:メルカプト基の活性化能力指数:100、スチレン含有量:25質量%、およびビニル結合量:44モル%の溶液重合SBR
BR1:宇部興産(株)製のBR150B(メルカプト基の活性化能力指数:95、ビニル結合量:1.5モル%、シス1,4−含有率97%)
BR2:メルカプト基の活性化能力指数:105、ビニル結合量:13モル%、およびシス1,4−含有率36%のBR
式(1)の化合物:大内新興化学工業(株)製のリターダーCTP(N−シクロヘキシルチオフタルイミド)
微粒子カーボンブラック:窒素吸着比表面積(N2SA)が180m2/gのカーボンブラック
シリカ:エボニック・デグザ(Evonik Degussa)社製のULTRASIL(登録商標)VN3(N2SA:175m2/g)
シランカップリング剤A:モメンティブ社製のNXT−Z45(結合単位Aと結合単位Bとの共重合体(結合単位A:55モル%、結合単位B:45モル%))
シランカップリング剤B:エボニック・デグザ社製のSi363
酸化亜鉛:三井金属鉱業(株)製の亜鉛華1号
ステアリン酸:日油(株)製のビーズステアリン酸つばき
ワックス:日本精蝋(株)製のオゾエース0355(パラフィン系)
オイル:H&R(株)製のVivaTec400(TDAEオイル)
スチレン樹脂:アリゾナケミカル社製のSylvatraxx(登録商標)4401(軟化点:85℃)
老化防止剤(1):住友化学(株)製のアンチゲン6C(N−(1,3−ジメチルブチル)−N’−フェニル−p−フェニレンジアミン)
老化防止剤(2):大内新興化学工業(株)製のノクラック224(TMQ、2,2,4−トリメチル−1,2−ジヒドロキノリン重合体)
加工助剤(1):パフォーマンスアディティブス社製のUltra−Flow(登録商標)440(天然脂肪酸亜鉛/金属石鹸)
加工助剤(2):Schill&Seilacher社製のストラクトールWB16(脂肪酸エステルと脂肪酸金属塩の混合物)
硫黄:細井化学工業(株)製のHK−200−5(5%オイル含有粉末硫黄)
加硫促進剤(1):三新化学工業(株)製のサンセラーNS−G(N−(tert−ブチル)−2−ベンゾチアゾールスルフェンアミド(TBBS))
加硫促進剤(2):三新化学工業(株)製のサンセラーTBZTD(テトラベンジルチウラムジスルフィド(TBzTD))
加硫促進剤(3):大内新興化学工業(株)製のノクセラーD(N,N’−ジフェニルグアニジン)
実施例および比較例において用いた各ゴム成分のメルカプト基に対する反応性(メルカプト基の活性化能力指数)を次の手順により調べた。ゴム成分100質量部に対し、シリカ80質量部、シランカップリング剤A6.4質量部、オイル35質量部を、16LのB/Bミキサーにて3分間混練りし、排出温度160℃で混練物を排出した。得られた混練物1kgを8インチのオープンロールに幅30cm、厚み2mmで巻きつけ、ゴム温度が95±5℃になるまで練り、ゴムシートを得た。その後、得られたゴムシートをカットし、ゴムの生地肌の表面粗さRaをJIS B 0601の算術平均粗さRaに準拠して、表面粗さ計により測定した。得られた表面粗さの値について、次の式のようにSBR1の場合を基準として指数表示した。値が大きいほど、メルカプト基の活性化能力に優れる。
(メルカプト基の活性化能力指数)
=100×各ゴム成分の表面粗さRa/基準SBR1の表面粗さRa
表1、2または3に示す配合内容に従い、工程X1に示す各種薬品を、1.7Lバンバリーミキサーにて20秒間混練りした。その後、表1、2または3の工程X2に示す各種薬品を加えて、80秒間混練りし、表1、2または3の工程X3に示す各種薬品を加えてさらに80秒間混練りし、排出温度160℃で混練物を排出した。得られた混練物は、約30℃に冷却してから次工程に用いた。
8インチのオープンロールに1kgの未加硫ゴム組成物を幅30cm、厚み2mmで巻きつけ、ゴム温度が95±5℃になるまで練り、ゴムシートを得た。その後、得られたゴムシートをカットし、ゴムの生地肌の表面粗さRaをJIS B 0601の算術平均粗さRaに準拠して、表面粗さ計により測定した。得られた表面粗さの逆数の値について、次のように、実施例1〜8および比較例2〜7および比較例10〜12については比較例1を基準比較例とし、実施例9および比較例9については比較例8を基準比較例として指数表示した。値が大きいほど表面粗さが小さく、加工性に優れる。
Claims (7)
- 少なくとも2種類のゴム成分を含むゴム成分(A)、下記式(1)で表される化合物(B)、およびメルカプト基を有するシランカップリング剤(C)を含有するタイヤ用ゴム組成物の製造方法であって、
前記ゴム成分(A)のうちの第1のゴム成分と前記化合物(B)とを混練りする工程X1、
前記工程X1で得られる混練物に前記シランカップリング剤(C)を加えて混練りする工程X2、ならびに
前記工程X2で得られる混練物に前記ゴム成分(A)のうちの第2のゴム成分を加えて混練りする工程X3
を含み、前記第1のゴム成分のメルカプト基に対する活性化能力が前記第2のゴム成分よりも小さいものであるタイヤ用ゴム組成物の製造方法。
- 前記ゴム成分(A)中、スチレン含有量が25〜50質量%でありビニル結合量が10〜35モル%であるジエン系ゴムを50質量%以上含む請求項1記載の製造方法。
- 前記スチレン含有量が前記ビニル結合量の2倍以上である請求項2記載の製造方法。
- メルカプト基を有するシランカップリング剤が、下記式(2)で表される化合物、および/または下記式(3)で表される結合単位Aと下記式(4)で表される結合単位Bとを含む化合物である請求項1〜3のいずれか1項に記載の製造方法。
- 請求項1〜4のいずれか1項に記載の製造方法で得られるタイヤ用ゴム組成物の加硫前の段階でタイヤ用部材を成形し、他のタイヤ用部材と組み合わせて生タイヤを成形する工程と、前記成形工程で得られた生タイヤを加硫する加硫工程とを含むタイヤの製造方法。
- 少なくとも2種のゴム成分を含むゴム成分(A)、下記式(1)で表される化合物(B)、およびメルカプト基を有するシランカップリング剤(C)を含有するタイヤ用ゴム組成物であって、
前記ゴム成分(A)のうちの第1のゴム成分と前記化合物(B)とを混練りして得られる混練物に前記シランカップリング剤(C)を加えて混練りし、その後得られる混練物に前記ゴム成分(A)のうちの第2のゴム成分を加えて混練りすることにより得られ、前記第1のゴム成分のメルカプト基に対する活性化能力が前記第2のゴム成分よりも小さいものであるタイヤ用ゴム組成物。
- 請求項6記載のタイヤ用ゴム組成物で構成されるタイヤ用部材を備えるタイヤ。
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