JP6896574B2 - ゴム成分に耐摩耗性及び制動特性を付与するための添加剤、ゴム組成物、並びにタイヤ - Google Patents
ゴム成分に耐摩耗性及び制動特性を付与するための添加剤、ゴム組成物、並びにタイヤ Download PDFInfo
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- JP6896574B2 JP6896574B2 JP2017175922A JP2017175922A JP6896574B2 JP 6896574 B2 JP6896574 B2 JP 6896574B2 JP 2017175922 A JP2017175922 A JP 2017175922A JP 2017175922 A JP2017175922 A JP 2017175922A JP 6896574 B2 JP6896574 B2 JP 6896574B2
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- 229920001971 elastomer Polymers 0.000 title claims description 170
- 239000005060 rubber Substances 0.000 title claims description 170
- 239000000203 mixture Substances 0.000 title claims description 108
- 239000000654 additive Substances 0.000 title claims description 42
- -1 tetrazine compound Chemical class 0.000 claims description 195
- 239000006229 carbon black Substances 0.000 claims description 41
- 239000011256 inorganic filler Substances 0.000 claims description 39
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 39
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 claims description 37
- 230000000996 additive effect Effects 0.000 claims description 35
- 125000001424 substituent group Chemical group 0.000 claims description 26
- 229920003244 diene elastomer Polymers 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 19
- 125000000217 alkyl group Chemical group 0.000 claims description 15
- 125000000623 heterocyclic group Chemical group 0.000 claims description 11
- 125000004414 alkyl thio group Chemical group 0.000 claims description 10
- 125000003277 amino group Chemical group 0.000 claims description 9
- 125000003118 aryl group Chemical group 0.000 claims description 9
- 150000001993 dienes Chemical class 0.000 claims description 9
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 7
- 125000005110 aryl thio group Chemical group 0.000 claims description 6
- 230000009477 glass transition Effects 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 50
- 235000019241 carbon black Nutrition 0.000 description 38
- 238000002156 mixing Methods 0.000 description 36
- 229910052719 titanium Inorganic materials 0.000 description 24
- 239000010936 titanium Substances 0.000 description 24
- 239000000377 silicon dioxide Substances 0.000 description 23
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 22
- 238000004898 kneading Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 21
- 244000043261 Hevea brasiliensis Species 0.000 description 18
- 229920003052 natural elastomer Polymers 0.000 description 18
- 229920001194 natural rubber Polymers 0.000 description 18
- 125000004432 carbon atom Chemical group C* 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 17
- 239000003795 chemical substances by application Substances 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 15
- 239000006087 Silane Coupling Agent Substances 0.000 description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 14
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 13
- 229920003048 styrene butadiene rubber Polymers 0.000 description 12
- 239000005062 Polybutadiene Substances 0.000 description 11
- 229920002857 polybutadiene Polymers 0.000 description 11
- 239000013078 crystal Substances 0.000 description 10
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 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 9
- 239000002174 Styrene-butadiene Substances 0.000 description 9
- 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 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 8
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- OLXAHCQKLVGQOG-UHFFFAOYSA-N 3,6-dipyridin-3-yl-1,2,4,5-tetrazine Chemical compound C1=CN=CC(C=2N=NC(=NN=2)C=2C=NC=CC=2)=C1 OLXAHCQKLVGQOG-UHFFFAOYSA-N 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- 238000004073 vulcanization Methods 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 125000003545 alkoxy group Chemical group 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 150000003505 terpenes Chemical class 0.000 description 6
- 235000007586 terpenes Nutrition 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- JFBIRMIEJBPDTQ-UHFFFAOYSA-N 3,6-dipyridin-2-yl-1,2,4,5-tetrazine Chemical compound N1=CC=CC=C1C1=NN=C(C=2N=CC=CC=2)N=N1 JFBIRMIEJBPDTQ-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 4
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- 125000004122 cyclic group Chemical group 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 239000012756 surface treatment agent Substances 0.000 description 4
- 125000001399 1,2,3-triazolyl group Chemical group N1N=NC(=C1)* 0.000 description 3
- 125000001376 1,2,4-triazolyl group Chemical group N1N=C(N=C1)* 0.000 description 3
- 125000002941 2-furyl group Chemical group O1C([*])=C([H])C([H])=C1[H] 0.000 description 3
- 125000004105 2-pyridyl group Chemical group N1=C([*])C([H])=C([H])C([H])=C1[H] 0.000 description 3
- 125000003349 3-pyridyl group Chemical group N1=C([H])C([*])=C([H])C([H])=C1[H] 0.000 description 3
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 125000004103 aminoalkyl group Chemical group 0.000 description 3
- 230000003712 anti-aging effect Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical class CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- GRWFGVWFFZKLTI-IUCAKERBSA-N (-)-α-pinene Chemical compound CC1=CC[C@@H]2C(C)(C)[C@H]1C2 GRWFGVWFFZKLTI-IUCAKERBSA-N 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 2
- 125000004504 1,2,4-oxadiazolyl group Chemical group 0.000 description 2
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 2
- WBVSZPHBBYURDY-UHFFFAOYSA-N 3,6-bis(furan-2-yl)-1,2,4,5-tetrazine Chemical compound C1=COC(C=2N=NC(=NN=2)C=2OC=CC=2)=C1 WBVSZPHBBYURDY-UHFFFAOYSA-N 0.000 description 2
- LZMNXXQIQIHFGC-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propyl 2-methylprop-2-enoate Chemical compound CO[Si](C)(OC)CCCOC(=O)C(C)=C LZMNXXQIQIHFGC-UHFFFAOYSA-N 0.000 description 2
- ASUZTNLCAHONDF-UHFFFAOYSA-N 3-methyl-6-pyridin-2-yl-1,2,4,5-tetrazine Chemical compound N1=NC(C)=NN=C1C1=CC=CC=N1 ASUZTNLCAHONDF-UHFFFAOYSA-N 0.000 description 2
- NYTKXYJNAFBEGZ-UHFFFAOYSA-N 3-methyl-6-pyridin-3-yl-1,2,4,5-tetrazine Chemical compound N1=NC(C)=NN=C1C1=CC=CN=C1 NYTKXYJNAFBEGZ-UHFFFAOYSA-N 0.000 description 2
- 125000000339 4-pyridyl group Chemical group N1=C([H])C([H])=C([*])C([H])=C1[H] 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
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- 101150096839 Fcmr gene Proteins 0.000 description 2
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- 229910052801 chlorine Inorganic materials 0.000 description 2
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- XHPSGHROEWESJM-UHFFFAOYSA-N 3,6-di(pyrimidin-2-yl)-1,2,4,5-tetrazine Chemical compound N1=CC=CN=C1C1=NN=C(C=2N=CC=CN=2)N=N1 XHPSGHROEWESJM-UHFFFAOYSA-N 0.000 description 1
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- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- AFVFQIVMOAPDHO-UHFFFAOYSA-M methanesulfonate group Chemical class CS(=O)(=O)[O-] AFVFQIVMOAPDHO-UHFFFAOYSA-M 0.000 description 1
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
- UZJLYRRDVFWSGA-UHFFFAOYSA-N n-benzylacetamide Chemical compound CC(=O)NCC1=CC=CC=C1 UZJLYRRDVFWSGA-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000005029 naphthylthio group Chemical group C1(=CC=CC2=CC=CC=C12)S* 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229920006173 natural rubber latex Polymers 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 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
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical group CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 1
- 125000004307 pyrazin-2-yl group Chemical group [H]C1=C([H])N=C(*)C([H])=N1 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- GRWFGVWFFZKLTI-UHFFFAOYSA-N rac-alpha-Pinene Natural products CC1=CCC2C(C)(C)C1C2 GRWFGVWFFZKLTI-UHFFFAOYSA-N 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- WUQMBBLXLQNCPT-UHFFFAOYSA-N s-(2-triethoxysilylethyl) decanethioate Chemical compound CCCCCCCCCC(=O)SCC[Si](OCC)(OCC)OCC WUQMBBLXLQNCPT-UHFFFAOYSA-N 0.000 description 1
- CDMJANBZBZLJCQ-UHFFFAOYSA-N s-(2-triethoxysilylethyl) dodecanethioate Chemical compound CCCCCCCCCCCC(=O)SCC[Si](OCC)(OCC)OCC CDMJANBZBZLJCQ-UHFFFAOYSA-N 0.000 description 1
- JFYRMIAHMUHLOS-UHFFFAOYSA-N s-(2-triethoxysilylethyl) hexanethioate Chemical compound CCCCCC(=O)SCC[Si](OCC)(OCC)OCC JFYRMIAHMUHLOS-UHFFFAOYSA-N 0.000 description 1
- AFJZXDVTYJSLNU-UHFFFAOYSA-N s-(2-triethoxysilylethyl) octanethioate Chemical compound CCCCCCCC(=O)SCC[Si](OCC)(OCC)OCC AFJZXDVTYJSLNU-UHFFFAOYSA-N 0.000 description 1
- FHDQCJKIZLIACI-UHFFFAOYSA-N s-(2-trimethoxysilylethyl) decanethioate Chemical compound CCCCCCCCCC(=O)SCC[Si](OC)(OC)OC FHDQCJKIZLIACI-UHFFFAOYSA-N 0.000 description 1
- CSGIYWZXMINHAV-UHFFFAOYSA-N s-(2-trimethoxysilylethyl) dodecanethioate Chemical compound CCCCCCCCCCCC(=O)SCC[Si](OC)(OC)OC CSGIYWZXMINHAV-UHFFFAOYSA-N 0.000 description 1
- PUZLLMXCHBUACY-UHFFFAOYSA-N s-(2-trimethoxysilylethyl) hexanethioate Chemical compound CCCCCC(=O)SCC[Si](OC)(OC)OC PUZLLMXCHBUACY-UHFFFAOYSA-N 0.000 description 1
- HQELTSCAXGZTKK-UHFFFAOYSA-N s-(2-trimethoxysilylethyl) octanethioate Chemical compound CCCCCCCC(=O)SCC[Si](OC)(OC)OC HQELTSCAXGZTKK-UHFFFAOYSA-N 0.000 description 1
- ASAQWGFTVQFUCM-UHFFFAOYSA-N s-(3-triethoxysilylpropyl) decanethioate Chemical compound CCCCCCCCCC(=O)SCCC[Si](OCC)(OCC)OCC ASAQWGFTVQFUCM-UHFFFAOYSA-N 0.000 description 1
- FJDKAMYMVCUZKT-UHFFFAOYSA-N s-(3-triethoxysilylpropyl) dodecanethioate Chemical compound CCCCCCCCCCCC(=O)SCCC[Si](OCC)(OCC)OCC FJDKAMYMVCUZKT-UHFFFAOYSA-N 0.000 description 1
- HRNWETBDIWJQRN-UHFFFAOYSA-N s-(3-triethoxysilylpropyl) hexanethioate Chemical compound CCCCCC(=O)SCCC[Si](OCC)(OCC)OCC HRNWETBDIWJQRN-UHFFFAOYSA-N 0.000 description 1
- JPPLPDOXWBVPCW-UHFFFAOYSA-N s-(3-triethoxysilylpropyl) octanethioate Chemical compound CCCCCCCC(=O)SCCC[Si](OCC)(OCC)OCC JPPLPDOXWBVPCW-UHFFFAOYSA-N 0.000 description 1
- JRGGSZXAQWDRLM-UHFFFAOYSA-N s-(3-trimethoxysilylpropyl) decanethioate Chemical compound CCCCCCCCCC(=O)SCCC[Si](OC)(OC)OC JRGGSZXAQWDRLM-UHFFFAOYSA-N 0.000 description 1
- CIYYUDUAQHJIQC-UHFFFAOYSA-N s-(3-trimethoxysilylpropyl) dodecanethioate Chemical compound CCCCCCCCCCCC(=O)SCCC[Si](OC)(OC)OC CIYYUDUAQHJIQC-UHFFFAOYSA-N 0.000 description 1
- QMGGNJJTVZQBQW-UHFFFAOYSA-N s-(3-trimethoxysilylpropyl) hexanethioate Chemical compound CCCCCC(=O)SCCC[Si](OC)(OC)OC QMGGNJJTVZQBQW-UHFFFAOYSA-N 0.000 description 1
- KHYCKXNQNMBFAU-UHFFFAOYSA-N s-(3-trimethoxysilylpropyl) octanethioate Chemical compound CCCCCCCC(=O)SCCC[Si](OC)(OC)OC KHYCKXNQNMBFAU-UHFFFAOYSA-N 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000004905 tetrazines Chemical class 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical compound CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 description 1
- 125000001391 thioamide group Chemical group 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- BAKALPNAEUOCDL-UHFFFAOYSA-N titanium hydrochloride Chemical compound Cl.[Ti] BAKALPNAEUOCDL-UHFFFAOYSA-N 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- WUMSTCDLAYQDNO-UHFFFAOYSA-N triethoxy(hexyl)silane Chemical compound CCCCCC[Si](OCC)(OCC)OCC WUMSTCDLAYQDNO-UHFFFAOYSA-N 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
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- ZMANZCXQSJIPKH-UHFFFAOYSA-O triethylammonium ion Chemical compound CC[NH+](CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-O 0.000 description 1
- XYJRNCYWTVGEEG-UHFFFAOYSA-N trimethoxy(2-methylpropyl)silane Chemical compound CO[Si](OC)(OC)CC(C)C XYJRNCYWTVGEEG-UHFFFAOYSA-N 0.000 description 1
- LFRDHGNFBLIJIY-UHFFFAOYSA-N trimethoxy(prop-2-enyl)silane Chemical compound CO[Si](OC)(OC)CC=C LFRDHGNFBLIJIY-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- NQRACKNXKKOCJY-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSCCC[Si](OC)(OC)OC NQRACKNXKKOCJY-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
- KOFGNZOFJYBHIN-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyltrisulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSSCCC[Si](OC)(OC)OC KOFGNZOFJYBHIN-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- SWGJCIMEBVHMTA-UHFFFAOYSA-K trisodium;6-oxido-4-sulfo-5-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2-sulfonate Chemical compound [Na+].[Na+].[Na+].C1=CC=C2C(N=NC3=C4C(=CC(=CC4=CC=C3O)S([O-])(=O)=O)S([O-])(=O)=O)=CC=C(S([O-])(=O)=O)C2=C1 SWGJCIMEBVHMTA-UHFFFAOYSA-K 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- XJUNLJFOHNHSAR-UHFFFAOYSA-J zirconium(4+);dicarbonate Chemical compound [Zr+4].[O-]C([O-])=O.[O-]C([O-])=O XJUNLJFOHNHSAR-UHFFFAOYSA-J 0.000 description 1
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- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
項1.
ゴム成分に耐摩耗性及び制動特性を付与するための添加剤であって、
下記一般式(1):
で表されるテトラジン化合物又はその塩を含む、添加剤。
項2.
X1及びX2が、複素環基である項1に記載の添加剤。
項3.
ゴム成分、項1又は2に記載の添加剤、並びに無機充填材及び/又はカーボンブラックを含むゴム組成物。
項4.
更に含水酸化チタンを含む項3に記載のゴム組成物。
項5.
ゴム成分100質量部に対して、項1又は2に記載の添加剤を0.1〜10質量部、並びに無機充填材及び/又はカーボンブラックを合計量で20〜150質量部含む項3に記載のゴム組成物。
項6.
ゴム成分100質量部に対して、含水酸化チタンを0.5〜80質量部を含む項4又は5に記載のゴム組成物。
項7.
ゴム成分100質量部中、ジエン系ゴムが50質量部以上含まれる、項5又は6に記載のゴム組成物。
項8.
ジエン系ゴム中の50質量%以上が、ガラス転移点が−70℃から−20℃の範囲にあるジエン系ゴムである項7に記載のゴム組成物。
項9.
ゴム成分に項1又は2に記載の添加剤を処理して得られる変性ポリマー、並びに無機充填材及び/又はカーボンブラックを含むゴム組成物。
項10.
更に含水酸化チタンを含む項9に記載のゴム組成物。
項11.
トレッド部に用いられる項3〜10のいずれか一項に記載のゴム組成物。
項12.
項3〜11のいずれか一項に記載のゴム組成物を用いて作製されたタイヤ。
項13.
ジエン系ゴムが、天然ゴム、イソプレンゴム、スチレン−ブタジエン共重合体ゴム、及びブタジエンゴムからなる群より選ばれる少なくとも一つである項7又は8に記載のゴム組成物。
項14.
無機充填材がシリカである項3〜11及び項13のいずれか一項に記載のゴム組成物。
項15.
シリカがBET比表面積(m2/g)40〜350の範囲にある湿式シリカである項14に記載のゴム組成物。
項16.
無機充填材の配合量が、ゴム組成物100質量部に対して、20〜150質量部である項5又は6に記載のゴム組成物。
項17.
カーボンブラックの配合量が、ゴム組成物100質量部に対して、2〜150質量部である項5、6又は16に記載のゴム組成物。
項18.
ゴム成分100質量部に項1又は2に記載の添加剤0.1〜10質量部を処理して得られた変性ポリマー100質量部、並びに無機充填材及び/又はカーボンブラックを合計量で20〜150質量部含有するゴム組成物。
項19.
更に含水酸化チタン3〜60質量部含有する項18に記載のゴム組成物。
項20.
無機充填材の配合量が、変性ポリマー100質量部に対して、20〜150質量部である項18又は19に記載のゴム組成物。
項21.
カーボンブラックの配合量が、変性ポリマー100質量部に対して、2〜150質量部である項18〜20のいずれか一項に記載のゴム組成物。
項22.
項3〜11、及び項13〜21のいずれか一項に記載のゴム組成物を用いて作製されたタイヤトレッド。
本発明のゴム成分に耐摩耗性及び制動特性を付与するための添加剤(以下、「本発明の添加剤」ということもある)は、下記一般式(1)で表される化合物又はその塩(以下、「テトラジン化合物(1)」ということもある。)を含む。
1,2,4,5−テトラジン、
3,6−ビス(2−ピリジル)−1,2,4,5−テトラジン、
3,6−ビス(3−ピリジル)−1,2,4,5−テトラジン、
3,6−ビス(4−ピリジル)−1,2,4,5−テトラジン、
3,6−ジフェニル−1,2,4,5−テトラジン、
3,6−ジベンジル−1,2,4,5−テトラジン、
3,6−ビス(2−フラニル)−1,2,4,5−テトラジン、
3−メチル−6−(3−ピリジル)−1,2,4,5−テトラジン、
3,6−ビス(3,5−ジメチル−1−ピラゾリル)−1,2,4,5−テトラジン、
3,6−ビス(2−チエニル)−1,2,4,5−テトラジン、
3−メチル−6−(2−ピリジル)−1,2,4,5−テトラジン、
3,6−ビス(4−ヒドロキシフェニル)−1,2,4,5−テトラジン、
3,6−ビス(3−ヒドロキシフェニル)−1,2,4,5−テトラジン、
3,6−ビス(2−ピリミジニル)−1,2,4,5−テトラジン、
3,6−ビス(2−ピラジル)−1,2,4,5−テトラジン等が挙げられる。
本発明のゴム組成物は、ゴム成分、上記本発明の添加剤、並びに無機充填材及び/又はカーボンブラックを含んでいる。
本明細書において、ゴム成分としては、特に制限はなく、例えば、天然ゴム(NR)、合成ジエン系ゴム、及び天然ゴムと合成ジエン系ゴムとの混合物等のジエン系ゴム、並びにこれら以外の非ジエン系ゴムが挙げられる。
無機充填材としては、ゴム工業界において、通常使用される無機化合物であれば、特に制限はない。使用できる無機化合物としては、例えば、シリカ、γ−アルミナ、α−アルミナ等のアルミナ(Al2O3);ベーマイト、ダイアスポア等のアルミナ一水和物(Al2O3・H2O);ギブサイト、バイヤライト等の水酸化アルミニウム[Al(OH)3];炭酸アルミニウム[Al2(CO3)3]、水酸化マグネシウム[Mg(OH)2]、酸化マグネシウム(MgO)、炭酸マグネシウム(MgCO3)、タルク(3MgO・4SiO2・H2O)、アタパルジャイト(5MgO・8SiO2・9H2O)、チタン白(TiO2)、チタン黒(TiO2n−1)、酸化カルシウム(CaO)、水酸化カルシウム[Ca(OH)2]、酸化アルミニウムマグネシウム(MgO・Al2O3)、クレー(Al2O3・2SiO2)、カオリン(Al2O3・2SiO2・2H2O)、パイロフィライト(Al2O3・4SiO2・H2O)、ベントナイト(Al2O3・4SiO2・2H2O)、ケイ酸アルミニウム(Al2SiO5、Al4・3SiO4・5H2O等)、ケイ酸マグネシウム(Mg2SiO4、MgSiO3等)、ケイ酸カルシウム(Ca2・SiO4等)、ケイ酸アルミニウムカルシウム(Al2O3・CaO・2SiO2等)、ケイ酸マグネシウムカルシウム(CaMgSiO4)、炭酸カルシウム(CaCO3)、酸化ジルコニウム(ZrO2)、水酸化ジルコニウム[ZrO(OH)2・nH2O]、炭酸ジルコニウム[Zr(CO3)2]、各種ゼオライトのように電荷を補正する水素、アルカリ金属又はアルカリ土類金属を含む結晶性アルミノケイ酸塩等が挙げられる。これらの無機充填材は、ゴム成分との親和性を向上させるために、該無機充填材の表面が有機処理されていてもよい。
カーボンブラックとしては、特に制限はなく、例えば、市販品のカーボンブラック、Carbon-Silica Dual phase filler等が挙げられる。
本明細書において、含水酸化チタンは、「酸化チタン水和物」、「メタチタン酸」、「β−チタン酸」、「水酸化チタン」、「オルソチタン酸」、「α−チタン酸」等と称される化合物と同様の組成を有するものであり、分子式はTiO(OH)2、TiO2・H2O、Ti(OH)4、TiO2・2H2O等で示され、硫酸チタン、塩化チタン等の水溶性チタン化合物の加水分解物として知られている。含水酸化チタンは、X線回折において、アナターゼ型の酸化チタンと似たピークパターンを有するが、酸化チタンとは異なり、低結晶性の化合物である。本明細書において、「低結晶性」とは、X線回折において、アモルファスの場合と異なり、ピークの存在は確認できるものの、結晶性の化合物で示されるような急峻なピークとはピーク幅が異なること、すなわち、アモルファスと結晶性の化合物との中間的なピークを有することをいう。中間的なピークとは、2θ=20°〜30°の範囲内にある酸化チタンの結晶面に対応するピークの半値幅が0.1°以上であるピークをいう。なお、2θ=20°〜30°の範囲内に複数のピークが存在するときは、最大ピークの半値幅が0.1°以上である。半値幅は、好ましくは0.1°〜2°であり、より好ましくは0.45°〜1.8°である。半値幅をこのような範囲に調整することにより、より一層優れた制動特性を有するゴム組成物を得ることができる。なお、本明細書において、「半値幅」とは、X線回折によって得られたピーク強度の1/2の箇所の2θ軸での幅を意味する。
本発明のゴム組成物には、上記テトラジン化合物(1)、並びに無機充填材及び/又はカーボンブラック以外にも、ゴム工業界で通常使用される配合剤、例えば、老化防止剤、オゾン防止剤、軟化剤、加工助剤、ワックス、樹脂、発泡剤、オイル、ステアリン酸、亜鉛華(ZnO)、加硫促進剤、加硫遅延剤、加硫剤(硫黄)等を、本発明の目的を害しない範囲内で適宜選択して配合することができる。これら配合剤としては、市販品を好適に使用することができる。
本発明のゴム組成物の用途としては、タイヤトレッドが挙げられる。
本発明のゴム組成物の製造方法としては、特に制限されない。本発明のゴム組成物の製造方法は、例えば、ゴム成分、本発明の添加剤、並びに無機充填材及び/又はカーボンブラックを含む原料成分を混練する工程(A)、並びに工程(A)で得られる混合物、及び加硫剤を混練する工程(B)を含んでいる。
工程(A)は、ゴム成分、本発明の添加剤、並びに無機充填材及び/又はカーボンブラック、必要に応じて、含水酸化チタンを含む原料成分を混練する工程であり、加硫剤を配合する前の工程であることを意味している。工程(A)では、さらに必要に応じて、上記のその他の配合剤等を配合することができる。
ゴム成分が液状(液体)である場合は、該ゴム成分の溶液又は乳液(懸濁液)と、テトラジン化合物(1)とを加熱条件下で混合する方法(液状混合方法)等が挙げられる。
工程(B)は、工程(A)で得られる混合物、及び加硫剤を混合する工程(B)であり、混練の最終段階を意味している。
本発明のタイヤは、上記本発明のゴム組成物を用いて作製されたタイヤである。
200mL四つ口フラスコに、3−シアノピリジン24g(0.23モル)、水加ヒドラジン15g(1.3当量)、及びメタノール48mLを加え、室温で撹拌した。次いで、この混合物に、硫黄3.6g(15重量%)を加え、還流管を装着して外温70℃にて一晩加熱撹拌した。この反応液を氷冷し、結晶を濾過して少量の冷メタノールで洗浄した。粗結晶を減圧下乾燥し、橙色のジヒドロテトラジン粗結晶19gを得た。
融点:200℃、
1H−NMR(300MHz,CDCl3,δppm):
7.59(ddd,J =0.9,5.1,7.8 Hz,2H),8.92(m,4H),9.88(dd,J =0.9,2.4Hz,2H)
ゴム成分(S−SBR)100部に対してテトラジン化合物(1b)1部を、バンバリーミキサーを用いて混練した。混合物の温度が120〜150℃に達した時点から、その温度を維持するように調整しながら約3分間混練し、その後ロールミルで冷却して変性ポリマーを製造した。
硫酸法酸化チタンの製造工程において得られた含水酸化チタンA’(平均粒子径3μm)100gを脱イオン水10Lに分散し、分散液を得た。得られた分散液に48質量%水酸化カリウム水溶液を分散液のpHが7になるように添加し、撹拌した。撹拌した後、固体を濾取、乾燥、及び篩い通しし、500℃で6時間焼成することで含水酸化チタンAを得た。
硫酸法酸化チタンの製造工程において得られた含水酸化チタンB’(平均粒子径1μm)100gを脱イオン水10Lに分散し、分散液を得た。得られた分散液に48質量%水酸化カリウム水溶液を分散液のpHが7になるように添加し、撹拌した。撹拌した後、固体を濾取、乾燥、及び篩い通しし、500℃で6時間焼成することで含水酸化チタンBを得た。
実施例(表中)において使用する原料を以下に示す。
※1: 溶液重合SBR(S−SBR)、PetroChina Dushanzi Petrochemical Company製、商品名「RC2557S」
※2: ブタジエンゴム(BR)、Sinopec Qilu Petrochemical Co., Ltd.製、商品名「BR9000」
※3: 天然ゴム(NR)、GUANGKEN RUBBER社製、商品名「TSR20」
※4: 製造例2で製造した変性S−SBR
※5: Quechen Silicon Chemical Co., Ltd.製、商品名「HD165MP」
※6: Evonik Industries AG社製、商品名「Si69」
※7: カーボンブラック、Cabot社製、商品名「N234」
※8: Kemai Chemical Co., Ltd.製、商品名「6−PPD」
※9: 酸化亜鉛、Dalian Zinc Oxide Co., Ltd.製
※10: ステアリン酸、Sichuan Tianyu Grease Chemical Co., Ltd.製
※11: Hansen & Rosenthal社製、商品名「Vivatec 700」
※12: テトラジン化合物(1a):3,6−ビス(3−ピリジル)−1,2,4,5−テトラジン(製造例1で製造した化合物)
※13: テトラジン化合物(1b):3,6−ビス(2−ピリジル)−1,2,4,5−テトラジン、東京化成工業株式会社製
※14: テトラジン化合物(1c):3,6−ビス(4−ピリジル)−1,2,4,5−テトラジン、東京化成工業株式会社製
※15: 硫黄、Shanghai Jinghai Chemical Co.,Ltd.製
※16: Kemai Chemical Co., Ltd.製、商品名「DPG」
※17: Kemai Chemical Co., Ltd.製、商品名「CBS」
※18: SBR、旭化成株式会社製、商品名「タフデン2000R」
※19: 天然ゴム(NR)、中化国際社製、商品名「RSS#3」
※20: 東ソー・シリカ株式会社製、商品名「Nipsil(銘柄AQ)」
※21: Evonik Industries AG製、商品名「Si75」
※22: カーボンブラック、東海カーボン株式会社製、商品名「シースト3」
※23: 老化防止剤、川口化学工業株式会社製、商品名「Antage 6C」
※24: 酸化亜鉛、堺化学工業株式会社製、銘柄「1種」
※25: 加工助剤、ストラクトール社製、商品名「HT254」
※26: プロセスオイル、三共油化工業社製、商品名「SNH220」
※27: 硫黄、細井化学工業株式会社製、商品名「HK200−5」
※28: 加硫促進剤、大内新興化学工業株式会社製、商品名「ノクセラ−D」
※29: 加硫促進剤、大内新興化学工業株式会社製、商品名「ノクセラ−CZ−G」
下記表1〜4の工程(A)に記載の各成分をその割合(質量部)で混合し、バンバリーミキサーで混合物の最高温度が160℃になるように回転数を調整しながら5分間混練した。混合物の温度が80℃以下になるまで養生させた後、表1〜4の工程(B)に記載の各成分をその割合(質量部)で投入し、混合物の最高温度が110℃以下になるよう調整しながら混練して、ゴム組成物を製造した。
粘弾性測定装置(Metravib社製)を使用し、温度0℃、動歪0.25%、周波数10Hzの条件に低加硫ゴムのtanδ値を測定した。この値から下記式により制動性能指数を算出した。この値が高いほど制動特性に優れていることを示す。
アクロン式摩耗試験機を使用して、サンプル回転速度76rpm/min、砥石回転速度34rpm/min、傾角15°、及び荷重1700gの条件下で、摩耗量を測定した。この値から下記式により耐摩耗性指数を算出した。この値が大きいほど耐摩耗特性に優れていることを示す。
Claims (11)
- X1及びX2が、複素環基である請求項1に記載の添加剤。
- ゴム成分、請求項1又は2に記載の添加剤、並びに無機充填材及び/又はカーボンブラックを含むタイヤトレッド用ゴム組成物。
- 更に含水酸化チタンを含む請求項3に記載のタイヤトレッド用ゴム組成物。
- ゴム成分100質量部に対して、請求項1又は2に記載の添加剤を0.1〜10質量部、並びに無機充填材及び/又はカーボンブラックを合計量で20〜150質量部含む請求項3に記載のタイヤトレッド用ゴム組成物。
- ゴム成分100質量部に対して、含水酸化チタンを0.5〜80質量部含む請求項4又は5に記載のタイヤトレッド用ゴム組成物。
- ゴム成分100質量部中、ジエン系ゴムが50質量部以上含まれる、請求項5又は6に記載のタイヤトレッド用ゴム組成物。
- ジエン系ゴム中の50重量%以上が、ガラス転移点が−70℃から−20℃の範囲にあるジエン系ゴムである請求項7に記載のタイヤトレッド用ゴム組成物。
- ゴム成分に請求項1又は2に記載の添加剤を処理して得られる変性ポリマー、並びに無機充填材及び/又はカーボンブラックを含むタイヤトレッド用ゴム組成物。
- 更に含水酸化チタンを含む請求項9に記載のタイヤトレッド用ゴム組成物。
- 請求項3〜10のいずれか一項に記載のタイヤトレッド用ゴム組成物を用いて作製されたタイヤトレッドを有するタイヤ。
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