WO2016121175A1 - オルガノポリシロキサン、ゴム用配合剤、ゴム組成物及びタイヤ - Google Patents
オルガノポリシロキサン、ゴム用配合剤、ゴム組成物及びタイヤ Download PDFInfo
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- WO2016121175A1 WO2016121175A1 PCT/JP2015/079788 JP2015079788W WO2016121175A1 WO 2016121175 A1 WO2016121175 A1 WO 2016121175A1 JP 2015079788 W JP2015079788 W JP 2015079788W WO 2016121175 A1 WO2016121175 A1 WO 2016121175A1
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- carbon atoms
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- organopolysiloxane
- formula
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- 239000000203 mixture Substances 0.000 title claims abstract description 63
- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 53
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- 239000005060 rubber Substances 0.000 title claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 32
- 238000010058 rubber compounding Methods 0.000 title claims abstract description 23
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 30
- 125000000101 thioether group Chemical group 0.000 claims abstract description 19
- 125000000962 organic group Chemical group 0.000 claims abstract description 18
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 10
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 46
- 150000003961 organosilicon compounds Chemical class 0.000 claims description 27
- 125000000217 alkyl group Chemical group 0.000 claims description 18
- 125000003118 aryl group Chemical group 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 9
- 125000003342 alkenyl group Chemical group 0.000 claims description 8
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 5
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- 238000001914 filtration Methods 0.000 description 24
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 23
- 229910052717 sulfur Inorganic materials 0.000 description 22
- 239000011593 sulfur Substances 0.000 description 22
- 239000000377 silicon dioxide Substances 0.000 description 16
- 238000000921 elemental analysis Methods 0.000 description 14
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- 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 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
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- 238000010992 reflux Methods 0.000 description 12
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 238000013329 compounding Methods 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
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- 230000005494 condensation Effects 0.000 description 5
- 125000002704 decyl 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])* 0.000 description 5
- 125000002347 octyl 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])[H] 0.000 description 5
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- 244000043261 Hevea brasiliensis Species 0.000 description 4
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
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- 239000000654 additive Substances 0.000 description 3
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- 230000003712 anti-aging effect Effects 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 235000010216 calcium carbonate Nutrition 0.000 description 3
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- 150000001875 compounds Chemical class 0.000 description 3
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- 230000000694 effects Effects 0.000 description 3
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- 238000000034 method Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 3
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229940126062 Compound A Drugs 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 2
- 101000837626 Homo sapiens Thyroid hormone receptor alpha Proteins 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 102100028702 Thyroid hormone receptor alpha Human genes 0.000 description 2
- GPZLQABYHZCVJJ-UHFFFAOYSA-N [3-[3,3-bis(triethoxysilyl)propyldisulfanyl]-1-triethoxysilylpropyl]-triethoxysilane Chemical compound CCO[Si](OCC)(OCC)C([Si](OCC)(OCC)OCC)CCSSCCC([Si](OCC)(OCC)OCC)[Si](OCC)(OCC)OCC GPZLQABYHZCVJJ-UHFFFAOYSA-N 0.000 description 2
- IVLBGFRTARNACQ-UHFFFAOYSA-N [3-[3,3-bis(triethoxysilyl)propyltetrasulfanyl]-1-triethoxysilylpropyl]-triethoxysilane Chemical compound CCO[Si](OCC)(OCC)C([Si](OCC)(OCC)OCC)CCSSSSCCC([Si](OCC)(OCC)OCC)[Si](OCC)(OCC)OCC IVLBGFRTARNACQ-UHFFFAOYSA-N 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
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- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- GOIPELYWYGMEFQ-UHFFFAOYSA-N dimethoxy-methyl-octylsilane Chemical compound CCCCCCCC[Si](C)(OC)OC GOIPELYWYGMEFQ-UHFFFAOYSA-N 0.000 description 2
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
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- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- CZWLNMOIEMTDJY-UHFFFAOYSA-N hexyl(trimethoxy)silane Chemical compound CCCCCC[Si](OC)(OC)OC CZWLNMOIEMTDJY-UHFFFAOYSA-N 0.000 description 1
- APQKDJQPCPXLQL-UHFFFAOYSA-N hexyl-dimethoxy-methylsilane Chemical compound CCCCCC[Si](C)(OC)OC APQKDJQPCPXLQL-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000011968 lewis acid catalyst Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- DRRZZMBHJXLZRS-UHFFFAOYSA-N n-[3-[dimethoxy(methyl)silyl]propyl]cyclohexanamine Chemical compound CO[Si](C)(OC)CCCNC1CCCCC1 DRRZZMBHJXLZRS-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000006384 oligomerization reaction Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229960003975 potassium Drugs 0.000 description 1
- 235000007686 potassium Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- WUMSTCDLAYQDNO-UHFFFAOYSA-N triethoxy(hexyl)silane Chemical compound CCCCCC[Si](OCC)(OCC)OCC WUMSTCDLAYQDNO-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
- FHVAUDREWWXPRW-UHFFFAOYSA-N triethoxy(pentyl)silane Chemical compound CCCCC[Si](OCC)(OCC)OCC FHVAUDREWWXPRW-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
- 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
- HILHCDFHSDUYNX-UHFFFAOYSA-N trimethoxy(pentyl)silane Chemical compound CCCCC[Si](OC)(OC)OC HILHCDFHSDUYNX-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
- 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
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
Classifications
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/28—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen sulfur-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/48—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
-
- 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
- C08K5/54—Silicon-containing compounds
- C08K5/548—Silicon-containing compounds containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/14—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to a novel organopolysiloxane containing an organic group having a sulfide group, a rubber compounding agent, a rubber composition, and a tire.
- the sulfur-containing organosilicon compound is useful as an essential component for the production of a tire comprising a silica-filled rubber composition.
- Silica-filled tires are excellent in performance, particularly in abrasion resistance, rolling resistance and wet grip properties in automobile applications. Such performance improvement is closely related to improvement in fuel efficiency of tires, and has been actively studied recently.
- the silica filled rubber composition reduces the rolling resistance of the tire and improves wet grip, but has a high unvulcanized viscosity. Multi-step kneading is required and there is a problem in workability. Therefore, in a rubber composition in which an inorganic filler such as silica is simply blended, there is a problem that the dispersion of the filler is insufficient, and the fracture strength and wear resistance are greatly reduced.
- Patent Document 1 Japanese Patent Publication No. 51-20208.
- sulfur-containing organosilicon compounds compounds containing an alkoxysilyl group and a polysulfidesilyl group in the molecule, such as bis-triethoxysilylpropyl tetrasulfide and bis-triethoxysilylpropyl disulfide, are known to be effective.
- Patent Documents 2 to 5 JP-T-2004-525230, JP-A-2004-18511, JP-A-2002-145890, US Pat. No. 6,229,036).
- Patent Document 11 Patent No. 55744063
- Patent No. 55744063 has an example using a polysiloxane having a polysulfide group and a long-chain alkyl group, but the tire rubber has a large sulfide group equivalent and realizes a desired low fuel consumption. No composition has been obtained.
- the present invention has been made in view of the above circumstances, and provides an organopolysiloxane capable of realizing desired low fuel consumption at the time of tire manufacture and capable of greatly reducing the hysteresis loss of a cured rubber composition.
- Another object of the present invention is to provide a rubber compounding agent containing the organopolysiloxane, a rubber composition obtained by compounding the rubber compounding agent, and a tire formed using the rubber composition.
- a monovalent hydrocarbon group having 5 to 10 carbon atoms such as a sulfide group-containing organic group, a long-chain alkyl group, a hydrolyzable group and / or the like. It has been found that a rubber composition using a rubber compounding agent mainly composed of an organopolysiloxane containing a hydroxyl group and having a sulfide equivalent weight of 1,000 g / mol or less satisfies a desired low fuel consumption tire characteristic.
- the present invention has been made.
- the present invention provides the following organopolysiloxane, rubber compounding agent, rubber composition and tire.
- An organopolysiloxane comprising an organic group having a sulfide group represented by the following average composition formula (1) and having a sulfide equivalent of 1,000 g / mol or less.
- A is a sulfide group-containing divalent organic group
- B is a monovalent hydrocarbon group having 5 to 10 carbon atoms
- C is a hydrolyzable group and / or hydroxyl group
- R 1 is a carbon number 1 to 4 monovalent hydrocarbon groups
- a, b, c, d are 0 ⁇ 2a ⁇ 1, 0 ⁇ b ⁇ 1, 0 ⁇ c ⁇ 3, 0 ⁇ d ⁇ 2, and 0 ⁇ 2a + b + c + d ⁇ 4)
- the sulfide group-containing divalent organic group of A is represented by the following formula (2): * -(CH 2 ) n -S x- (CH 2 ) n- * (2) (In the formula, n is an integer of 1 to 10, and x is a statistical average value of 1 to 6.
- the C hydrolyzable group and / or hydroxyl group is represented by the following formula (3): * -OR 2 (3) (Wherein, R 2 represents an alkyl group, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, an alkenyl group or a hydrogen atom having 2 to 10 carbon atoms having 1 to 20 carbon atoms.
- the organopolysiloxane according to [1] which is represented by: [3] The organopolysiloxane according to [1] or [2], wherein, in the average composition formula (1), B is a monovalent hydrocarbon group having 8 to 10 carbon atoms. [4] The organopolysiloxane according to any one of [1] to [3], wherein the sulfide equivalent is 500 to 800 g / mol. [5] The following general formula (4) (In the formula, n is an integer of 1 to 10, and x is a statistical average value of 1 to 6.
- R 3 is an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, or the number of carbon atoms.
- R 4 is an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 10 carbon atoms
- y is an integer of 1 to 3 Represents.
- An organopolysiloxane comprising a cohydrolyzed condensate of 0 to 10 mol
- the rubber compounding agent according to [6] which is a ratio of 95.
- a rubber composition comprising the rubber compounding agent according to [6] or [7].
- the organopolysiloxane of the present invention has a sulfide group-containing organic group, a monovalent hydrocarbon group having 5 to 10 carbon atoms such as a long-chain alkyl group, a hydrolyzable group and / or a hydroxyl group, and a sulfide equivalent. Is relatively small and has a high content of sulfide groups, so that a tire formed using a rubber composition using a rubber compounding agent based on the organopolysiloxane satisfies the desired low fuel consumption tire characteristics. can do.
- Organopolysiloxanes each containing a monovalent hydrocarbon group having 5 to 10 carbon atoms such as an organic group having a sulfide group, a long-chain alkyl group, a hydrolyzable group and / or a hydroxyl group according to the present invention have the following average composition formula ( 1) and the sulfide equivalent is 1,000 g / mol or less.
- A is a sulfide group-containing divalent organic group
- B is a monovalent hydrocarbon group having 5 to 10 carbon atoms
- C is a hydrolyzable group and / or hydroxyl group
- R 1 is a carbon number 1 to 4 monovalent hydrocarbon groups
- a, b, c, d are 0 ⁇ 2a ⁇ 1, 0 ⁇ b ⁇ 1, 0 ⁇ c ⁇ 3, 0 ⁇ d ⁇ 2, and 0 ⁇ 2a + b + c + d ⁇ 4)
- A is a sulfide group-containing divalent organic group, and more specifically, one represented by the following formula (2) is preferable.
- * -(CH 2 ) n -S x- (CH 2 ) n- * (2) (In the formula, n is an integer of 1 to 10, preferably 2 to 4, and x is a statistical average value of 1 to 6, preferably 2 to 4. * ⁇ , ⁇ * represents a bond. )
- sulfide group-containing divalent organic group —CH 2 —S 2 —CH 2 —, -C 2 H 4 -S 2 -C 2 H 4 -, -C 3 H 6 -S 2 -C 3 H 6- , -C 4 H 8 -S 2 -C 4 H 8 -, —CH 2 —S 4 —CH 2 —, -C 2 H 4 -S 4 -C 2 H 4 -, -C 3 H 6 -S 4 -C 3 H 6- , -C 4 H 8 -S 4 -C 4 H 8 - Etc.
- B is a monovalent hydrocarbon group having 5 to 10 carbon atoms, preferably 8 to 10 carbon atoms, and examples of the monovalent hydrocarbon group include linear, branched or cyclic pentyl groups having 5 to 10 carbon atoms. Groups, hexyl groups, octyl groups, decyl groups and other alkyl groups, C6-C10 phenyl groups, tolyl groups, naphthyl groups and other aryl groups. Of these, an octyl group and a decyl group are preferred.
- C is a hydrolyzable group and / or a hydroxyl group, and more specifically, one represented by the following formula (3) is preferable.
- * -OR 2 (3) (Wherein R 2 is an alkyl group having 1 to 20, preferably 1 to 5, more preferably 1 to 3, carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, or 2 carbon atoms.
- examples of the alkyl group represented by R 2 include a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, an octyl group, a decyl group, an octadecyl group, and the like. , A tolyl group, a naphthyl group, and the like.
- examples of the aralkyl group include a benzyl group.
- examples of the alkenyl group include a vinyl group, a propenyl group, and a pentenyl group.
- R 2 is particularly preferably an ethyl group.
- R 1 is a monovalent hydrocarbon group having 1 to 4 carbon atoms, and examples of the monovalent hydrocarbon group include alkyl groups such as a methyl group, an ethyl group, and a propyl group. Of these, a methyl group is preferred.
- A, b, c, d are 0 ⁇ 2a ⁇ 1, 0 ⁇ b ⁇ 1, 0 ⁇ c ⁇ 3, 0 ⁇ d ⁇ 2, and 0 ⁇ 2a + b + c + d ⁇ 4, and the range of sulfide equivalents to be described later
- a, b, and d mean the average number of moles of each organic group when the total number of moles of silicon atoms is 1, and the average number of moles of each organic group contained in one molecule. It shows that. Since A represents a divalent organic group, it is represented as 2a. Further, c represents the average number of mol% of hydrolyzable groups contained on the silicon atom with respect to 1 mol of the silicon atom.
- the organopolysiloxane of the present invention has a sulfide equivalent of 1,000 g / mol or less, preferably a sulfide equivalent of 500 to 900 g / mol, more preferably a sulfide equivalent of 500 to 800 g / mol.
- the sulfide equivalent will be described.
- the sulfide equivalent means the mass of the organopolysiloxane containing 1 mol of sulfide groups, and is derived from the following formula.
- Sulfide equivalent 32.1 ⁇ e ⁇ 100 / f (g / mol) (In the formula, e is the average sulfur chain length of the sulfide group, and f is the sulfur content (% by mass) in the organopolysiloxane.) If the sulfide equivalent exceeds 1,000 g / mol, there may be insufficient dispersibility in rubber when used as a filler treatment agent, or the abrasion resistance and rolling property of a silica-filled tire may be inferior. The desired effect cannot be obtained.
- organopolysiloxane of the present invention in order to set the sulfide equivalent within the above range, it is preferable to set a to d in the above formula (1) within the above range. This can be achieved by adjusting the reaction ratio of various organosilicon compounds as raw materials in the range of a to d in the production of organopolysiloxane.
- the sulfur content in the organopolysiloxane of the present invention is preferably 6 to 30% by mass, and more preferably 7 to 28% by mass. If the sulfur content is too low, the above-mentioned sulfide equivalent becomes large, so that the desired rubber properties may not be obtained. If it is too high, the effect may be saturated and uneconomical.
- the sulfur content is a value measured by elemental analysis using CARLO ERBA Mod-1106 or the like.
- the viscosity of the organopolysiloxane of the present invention is preferably 2 mm 2 / s to 10,000 mm 2 / s, more preferably 10 mm 2 / s to 5,000 mm 2 / s. If the viscosity is too large, the processability may deteriorate.
- the viscosity is based on measurement at 25 ° C. using a capillary type kinematic viscometer.
- the organopolysiloxane of the present invention is produced by the following general formula (4).
- R 3 is an alkyl group having 1 to 20, preferably 1 to 5, more preferably 1 to 3, carbon atoms, an aryl group having 6 to 10 carbon atoms, An aralkyl group having 7 to 10 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms, preferably 2 to 4 carbon atoms
- R 4 is an alkyl group having 1 to 10 carbon atoms, preferably 1 to 3 carbon atoms, or 6 to 10 carbon atoms.
- An aryl group, y represents an integer of 1 to 3, particularly 2 or 3.
- an organic silicon compound represented by the following general formula (5) (Wherein R 3 , R 4 and y are as defined above, and p represents an integer of 5 to 10, preferably 8 to 10.)
- the following general formula (6) (Wherein R 3 , R 4 and y are the same as above, q represents an integer of 1 to 4, preferably 1 to 3) It is carried out by cohydrolytic condensation with an organosilicon compound represented by
- examples of the alkyl group represented by R 3 include a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, an octyl group, a decyl group, and an octadecyl group.
- the alkenyl group includes a vinyl group, a propenyl group, a pentenyl group, and the like, among which an ethyl group is preferable.
- Examples of the alkyl group for R 4 include a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, an octyl group, and a decyl group.
- Examples of the aryl group include a phenyl group, a tolyl group, and a naphthyl group. Of these, a methyl group is preferred.
- the organosilicon compound represented by the above formula (4) is not particularly limited. Specifically, bis (trimethoxysilylpropyl) tetrasulfide, bis (triethoxysilylpropyl) tetrasulfide, bis (trimethoxysilyl) Propyl) disulfide, bis (triethoxysilylpropyl) disulfide and the like.
- the organosilicon compound represented by the above formula (5) is not particularly limited, and specifically, pentyltrimethoxysilane, pentylmethyldimethoxysilane, pentyltriethoxysilane, pentylmethyldiethoxysilane, hexyltrimethoxysilane.
- the organosilicon compound represented by the above formula (6) is not particularly limited. Specifically, methyltrimethoxysilane, dimethyldimethoxysilane, methyltriethoxysilane, methylethyldiethoxysilane, propyltrimethoxysilane, Examples include propylmethyldimethoxysilane and propylmethyldiethoxysilane.
- the use amount of the organosilicon compounds of the above formulas (4), (5), and (6) is selected so that in the formula (1), a to d are the numbers described above.
- the organosilicon compound of the formula (4) is 20 to 95 mol%, particularly 30 to 95 mol%, especially 40 to 40% of the whole organosilicon compound of the formulas (4), (5) and (6).
- the organosilicon compound of the formula (5) is preferably 5 to 80 mol%, particularly preferably 5 to 70 mol%, particularly preferably 5 to 60 mol%
- the organosilicon compound of the formula (6) The compound is preferably 0 to 10 mol%, particularly 0 to 5 mol%.
- the cohydrolytic condensation can be performed by a known method, and the amount of water to be used can also be a known amount, and is usually 0 for a total of 1 mol of hydrolyzable silyl groups in the organosilicon compound. 0.5 to 0.99 mol, and more preferably 0.5 to 0.9 mol can be used.
- an organic solvent may be used as necessary.
- the solvent is not particularly limited, but specifically, aliphatic hydrocarbon solvents such as pentane, hexane, heptane, decane, ether solvents such as diethyl ether, tetrahydrofuran, 1,4-dioxane, formamide, dimethylformamide, Examples thereof include amide solvents such as N-methylpyrrolidone, aromatic hydrocarbon solvents such as benzene, toluene and xylene, alcohol solvents such as methanol, ethanol and propanol.
- the amount used is not particularly limited, but is preferably about twice or less the mass of the organosilicon compound, and preferably about the same as the mass of the organosilicon compound.
- a catalyst may be used as necessary for the production of the organopolysiloxane of the present invention.
- the catalyst is not particularly limited, and specifically, acidic catalysts such as hydrochloric acid and acetic acid, Lewis acid catalysts such as tetrabutyl orthotitanate and ammonium fluoride, sodium hydroxide, potassium hydroxide, sodium carbonate, sodium acetate, acetic acid Examples thereof include alkali metal salts such as potassium, sodium hydrogen carbonate, potassium carbonate, potassium hydrogen carbonate, calcium carbonate, sodium methoxide and sodium ethoxide, and amine compounds such as triethylamine, tributylamine, pyridine and 4-dimethylaminopyridine.
- the amount of the catalyst in the case where a silane hydrolysis reaction catalyst and a silanol condensation reaction catalyst are used in combination is a total of 1 hydrolyzable silyl groups in the organosilicon compound.
- the amount is preferably 0.001 to 0.05 (unit: molar equivalent) with respect to mole.
- the cohydrolytic condensation can usually be carried out at 20 to 100 ° C., particularly 60 to 85 ° C. for 30 minutes to 20 hours, particularly 1 minute to 10 hours.
- the rubber compounding agent of the present invention contains the organopolysiloxane (A) of the present invention. Moreover, it is also possible to use what mixed the organopolysiloxane (A) of this invention with the at least 1 sort (s) of powder (B) as a rubber compounding agent.
- the powder (B) include carbon black, talc, calcium carbonate, stearic acid, silica, aluminum hydroxide, alumina, and magnesium hydroxide. From the viewpoint of reinforcing properties, silica and aluminum hydroxide are preferable, and silica is particularly preferable.
- the blending amount of the powder (B) is preferably 70/30 to 5/95, more preferably 60/40 to 10 in terms of the mass ratio of the component (A) to the component (B) ((A) / (B)).
- the ratio is / 90. If the amount of the powder (B) is too small, the rubber compounding agent becomes liquid, and it may be difficult to prepare the rubber kneader. If the amount of the powder (B) is too large, the total amount may increase with respect to the effective amount of the rubber compounding agent, which may increase the transportation cost.
- the rubber compounding agent of the present invention is mixed with fatty acid, fatty acid salt, polyethylene, polypropylene, polyoxyalkylene, polyester, polyurethane, polystyrene, polybutadiene, polyisoprene, natural rubber, styrene-butadiene copolymer and other organic polymers and rubber. It is generally blended for tires such as vulcanizing agents, crosslinking agents, vulcanization accelerators, crosslinking accelerators, various oils, anti-aging agents, fillers, plasticizers, and other general rubbers. Various additives may be blended, and the form may be liquid or solid, further diluted with an organic solvent, or emulsified.
- the compounding agent for rubber of the present invention is suitably used for a rubber composition containing a filler, particularly silica.
- the rubber compounding agent is added in an amount of 0.2 to 30 parts by weight, particularly 1 to 20 parts by weight, based on 100 parts by weight of the filler compounded in the rubber composition. Is desirable. If the amount of organopolysiloxane added is too small, the desired rubber properties may not be obtained. On the contrary, if the amount is too large, the effect is saturated with respect to the amount added, which is uneconomical.
- any rubber conventionally compounded in various rubber compositions for example, natural rubber (NR) ), Isoprene rubber (IR), various styrene-butadiene copolymer rubbers (SBR), various polybutadiene rubbers (BR), acrylonitrile-butadiene copolymer rubbers (NBR), butyl rubber (IIR) and the like, and ethylene- Propylene copolymer rubber (EPR, EPDM) or the like can be used alone or as an arbitrary blend.
- natural rubber NR
- IR Isoprene rubber
- SBR various styrene-butadiene copolymer rubbers
- BR various polybutadiene rubbers
- BR acrylonitrile-butadiene copolymer rubbers
- IIR acrylonitrile-butadiene copolymer rubbers
- EPR ethylene- Propylene copolymer rubber
- Examples of the filler to be blended include silica, talc, clay, aluminum hydroxide, magnesium hydroxide, calcium carbonate, and titanium oxide.
- the compounding quantity of a filler can be made into the conventional general compounding quantity, unless it contradicts the objective of this invention.
- the rubber composition using the rubber compounding agent of the present invention includes carbon black, a vulcanizing agent, a crosslinking agent, a vulcanization accelerator, a crosslinking accelerator, various oils, an anti-aging agent, a plasticizer.
- Various additives generally blended for tires such as an agent and other general rubbers can be blended. The blending amounts of these additives can be set to conventional general blending amounts as long as the object of the present invention is not violated.
- the organopolysiloxane of the present invention can be used in place of a known silane coupling agent, but the addition of other silane coupling agents is optional and has been conventionally performed. You may add the arbitrary silane coupling agents used together with a silica filler.
- Typical examples thereof include vinyltrimethoxysilane, vinyltriethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyltriethoxysilane, ⁇ -aminopropyltriethoxysilane, ⁇ -aminoethyl- ⁇ -aminopropyltrimethoxysilane, ⁇ -aminoethyl- ⁇ -aminopropyltriethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -mercaptopropyltriethoxysilane, ⁇ -methacryloxypropyltrimethoxysilane, ⁇ -methacryloxy Propyltriethoxysilane, ⁇ -acryloxypropyltrimethoxysilane, ⁇ -acryloxypropyltriethoxysilane, bis-triethoxysilylpropyl tetrasulfide,
- the rubber composition obtained by compounding the rubber compounding agent of the present invention can be kneaded by a general method to obtain a composition, which can be used after vulcanization or crosslinking.
- the tire of the present invention is characterized by using the above rubber composition, and the above rubber composition is preferably used for a tread.
- the tire according to the present invention can achieve desired low fuel consumption because the rolling resistance is greatly reduced and the wear resistance is also greatly improved.
- the tire of the present invention has a conventionally known structure and is not particularly limited, and can be produced by a normal method.
- an inert gas such as nitrogen, argon, helium or the like can be used as the gas filled in the tire, in addition to normal or air with adjusted oxygen partial pressure.
- Example 1 Into a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer, 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-846) In addition, 165.9 g (0.6 mol) of octyltriethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-3083) and 162.0 g of ethanol were charged, and then 16.2 g of 0.5N hydrochloric acid water (water 0 .9 mol) was added dropwise.
- a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by
- the obtained silicone oligomer had a sulfur content of 14.7% by mass, a sulfide equivalent of 870 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “oligomer 1”. (—C 3 H 6 —S 4 —C 3 H 6 —) 0.25 (—C 8 H 17 ) 0.50 (—OC 2 H 5 ) 1.50 SiO 0.75
- Example 2 Into a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer, 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-846) In addition, 138.3 g (0.5 mol) of octyltriethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-3083) and 162.0 g of ethanol were placed, and then 14.9 g of 0.5N hydrochloric acid water (water 0) was added at room temperature.
- a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by Shin-Et
- Example 3 Into a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer, 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-846) In addition, 110.6 g (0.4 mol) of octyltriethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-3083) and 162.0 g of ethanol were charged, and then 13.5 g of 0.5N hydrochloric acid water (water 0 .75 mol) was added dropwise.
- a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by Shin-
- the obtained silicone oligomer had a sulfur content of 17.8% by mass, a sulfide equivalent of 723 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “oligomer 3”. (—C 3 H 6 —S 4 —C 3 H 6 —) 0.30 (—C 8 H 17 ) 0.40 (—OC 2 H 5 ) 1.50 SiO 0.75
- Example 4 Into a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer, 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-846) In addition, 83.0 g (0.3 mol) of octyltriethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-3083) and 162.0 g of ethanol were charged, and then 12.2 g of 0.5N hydrochloric acid water (water 0 .68 mol) was added dropwise.
- a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer 161.7 g (0.3 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by
- the obtained silicone oligomer had a sulfur content of 19.8% by mass, a sulfide equivalent of 649 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “Oligomer 4”. (-C 3 H 6 -S 4 -C 3 H 6 -) 0.33 (-C 8 H 17) 0.33 (-OC 2 H 5) 1.50 SiO 0.75
- the obtained silicone oligomer had a sulfur content of 20.9% by mass, a sulfide equivalent of 615 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “Oligomer 5”. (-C 3 H 6 -S 4 -C 3 H 6 -) 0.36 (-C 8 H 17) 0.28 (-OC 2 H 5) 1.67 SiO 0.67
- Example 6 In a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer, 231.8 g (0.43 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-846) In addition, 83.0 g (0.3 mol) of octyltriethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBE-3083) and 162.0 g of ethanol were charged, and then 13.9 g of 0.5N hydrochloric acid water (water 0 .77 mol) was added dropwise.
- a 1 L separable flask equipped with a stirrer, reflux condenser, dropping funnel and thermometer 231.8 g (0.43 mol) of bis (triethoxysilylpropyl) tetrasulfide (manufactured
- the obtained silicone oligomer had a sulfur content of 21.4% by mass, a sulfide equivalent of 599 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “Oligomer 6”. (-C 3 H 6 -S 4 -C 3 H 6 -) 0.37 (-C 8 H 17) 0.26 (-OC 2 H 5) 1.67 SiO 0.67
- the obtained silicone oligomer had a sulfur content of 21.8% by mass, a sulfide equivalent of 589 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “Oligomer 7”. (—C 3 H 6 —S 4 —C 3 H 6 —) 0.38 (—C 8 H 17 ) 0.25 (—OC 2 H 5 ) 1.67 SiO 0.67
- oligomer 8 (—C 3 H 6 —S 4 —C 3 H 6 —) 0.14 (—C 8 H 17 ) 0.71 (—OC 2 H 5 ) 1.50 SiO 0.75
- the obtained silicone oligomer had a sulfur content of 9.8% by mass, a sulfide equivalent of 1,312 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “Oligomer 9”. (—C 3 H 6 —S 4 —C 3 H 6 —) 0.17 (—C 8 H 17 ) 0.67 (—OC 2 H 5 ) 1.50 SiO 0.75
- the obtained silicone oligomer had a sulfur content of 11.8% by mass, a sulfide equivalent of 1,091 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “Oligomer 10”.
- the obtained silicone oligomer had a sulfur content of 22.2% by mass, a sulfide equivalent of 579 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “oligomer 11”. (-C 3 H 6 -S 4 -C 3 H 6 -) 0.33 (-C 3 H 7) 0.33 (-OC 2 H 5) 1.50 SiO 0.75
- the obtained silicone oligomer had a sulfur content of 23.6% by mass, a sulfide equivalent of 543 g / mol, and was represented by the following average composition formula.
- the obtained oligomer is referred to as “oligomer 12”.
- Examples 8 to 14, Comparative Examples 6 to 11 As shown in Tables 1 and 2, oil-extended emulsion polymerization SBR (JSR Co., Ltd. # 1712) 110 parts, NR (general RSS # 3 grade) 20 parts, carbon black (general N234 grade) 20 parts 50 parts of silica (Nippsil AQ manufactured by Nippon Silica Industry Co., Ltd.), oligomers of Examples 1 to 7 and Comparative Examples 1 to 5 or 6.5 parts of Comparative Compound A shown below, 1 part of stearic acid, anti-aging agent 6C ( A masterbatch was prepared by blending 1 part of Nouchi 6C) manufactured by Ouchi Shinsei Chemical Co., Ltd.
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Abstract
Description
〔1〕
下記平均組成式(1)で表されるスルフィド基を有する有機基を含有し、かつスルフィド当量が1,000g/mol以下であることを特徴とするオルガノポリシロキサン。
(A)a(B)b(C)c(R1)dSiO(4-2a-b-c-d)/2 (1)
(式中、Aはスルフィド基含有二価有機基であり、Bは炭素数5~10の一価炭化水素基であり、Cは加水分解性基及び/又は水酸基であり、R1は炭素数1~4の一価炭化水素基であり、a、b、c、dは、0<2a<1、0<b<1、0<c<3、0≦d<2、且つ0<2a+b+c+d<4である。)
〔2〕
前記Aのスルフィド基含有二価有機基が、下記式(2)
*-(CH2)n-Sx-(CH2)n-* (2)
(式中、nは1~10の整数であり、xは統計的平均値で1~6を表す。*-、-*は結合手を示す。)
で表され、前記Cの加水分解性基及び/又は水酸基が、下記式(3)
*-OR2 (3)
(式中、R2は炭素数1~20のアルキル基、炭素数6~10のアリール基、炭素数7~10のアラルキル基、炭素数2~10のアルケニル基又は水素原子を表す。*-は結合手を示す。)
で表されることを特徴とする〔1〕に記載のオルガノポリシロキサン。
〔3〕
上記平均組成式(1)において、Bが炭素数8~10の一価炭化水素基であることを特徴とする〔1〕又は〔2〕に記載のオルガノポリシロキサン。
〔4〕
スルフィド当量が500~800g/molであることを特徴とする〔1〕~〔3〕のいずれかに記載のオルガノポリシロキサン。
〔5〕
下記一般式(4)
で表される有機ケイ素化合物20~95モル%と、下記一般式(5)
で表される有機ケイ素化合物5~80モル%と、下記一般式(6)
で表される有機ケイ素化合物0~10モル%との共加水分解縮合物からなるオルガノポリシロキサン。
〔6〕
〔1〕~〔5〕のいずれかに記載のオルガノポリシロキサンを含んでなるゴム用配合剤。
〔7〕
更に、少なくとも1種の粉体を含有してなり、前記オルガノポリシロキサン(A)と少なくとも1種の粉体(B)の質量比が、(A)/(B)=70/30~5/95の割合である〔6〕に記載のゴム用配合剤。
〔8〕
〔6〕又は〔7〕に記載のゴム用配合剤を配合してなるゴム組成物。
〔9〕
〔8〕に記載のゴム組成物を用いて形成されたタイヤ。
(A)a(B)b(C)c(R1)dSiO(4-2a-b-c-d)/2 (1)
(式中、Aはスルフィド基含有二価有機基であり、Bは炭素数5~10の一価炭化水素基であり、Cは加水分解性基及び/又は水酸基であり、R1は炭素数1~4の一価炭化水素基であり、a、b、c、dは、0<2a<1、0<b<1、0<c<3、0≦d<2、且つ0<2a+b+c+d<4である。)
*-(CH2)n-Sx-(CH2)n-* (2)
(式中、nは1~10、好ましくは2~4の整数であり、xは統計的平均値で1~6、好ましくは2~4を表す。*-、-*は結合手を示す。)
-CH2-S2-CH2-、
-C2H4-S2-C2H4-、
-C3H6-S2-C3H6-、
-C4H8-S2-C4H8-、
-CH2-S4-CH2-、
-C2H4-S4-C2H4-、
-C3H6-S4-C3H6-、
-C4H8-S4-C4H8-
等が挙げられる。
*-OR2 (3)
(式中、R2は炭素数1~20、好ましくは1~5、より好ましくは1~3のアルキル基、炭素数6~10のアリール基、炭素数7~10のアラルキル基、炭素数2~10、好ましくは2~4のアルケニル基、又は水素原子を表す。*-は結合手を示す。この場合、-OR2中、R2が水素原子である-OH基の割合は、0~30モル%、特に0~10モル%であることが好ましい。)
ここで、a、b、dは、ケイ素原子の合計モル数を1とした場合の各有機基の平均モル数を意味しており、各有機基が一分子中に平均何モル%含まれているかを示している。Aは二価の有機基を示すため2aという表記になる。また、cはケイ素原子1モルに対し、ケイ素原子上に加水分解性基が平均何モル%含まれているかを示している。
ここで、スルフィド当量について説明する。スルフィド当量とは、スルフィド基1molを含むオルガノポリシロキサンの質量のことを示し、下記式により導き出される。
スルフィド当量=32.1×e×100/f (g/mol)
(式中、eはスルフィド基の平均硫黄鎖長であり、fはオルガノポリシロキサン中の硫黄含有量(質量%)を示す。)
スルフィド当量が1,000g/molを超えると、フィラーの処理剤として用いた際のゴム中への分散性が不足したり、シリカ充填タイヤの耐磨耗性や転がり性に劣る場合があるなど、所望の効果が得られない。なお、本発明のオルガノポリシロキサンにおいて、スルフィド当量を上記範囲とするためには、上述した式(1)中のa~dを上記範囲とすることが好ましく、この範囲とするためには、例えば、オルガノポリシロキサンを製造する際に、原料となる各種の有機ケイ素化合物の反応割合を上記a~dの範囲内となるように調整することで達成できる。
で表される有機ケイ素化合物と、下記一般式(5)
で表される有機ケイ素化合物と、必要により、下記一般式(6)
で表される有機ケイ素化合物とを共加水分解縮合することにより行われる。
R4のアルキル基としては、メチル基、エチル基、プロピル基、ブチル基、ヘキシル基、オクチル基、デシル基などが挙げられ、アリール基としては、フェニル基、トリル基、ナフチル基などが挙げられ、中でもメチル基が好ましい。
この場合、上記ゴム用配合剤の添加量はゴム組成物に配合されるフィラー100質量部に対して本発明のオルガノポリシロキサンを0.2~30質量部、特に1~20質量部添加するのが望ましい。オルガノポリシロキサンの添加量が少なすぎると所望のゴム物性が得られない場合がある。逆に多すぎると添加量に対して効果が飽和し、非経済的である。
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)161.7g(0.3mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)165.9g(0.6mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水16.2g(水0.9mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液7.8gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が80mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は14.7質量%であり、スルフィド当量は870g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー1とする。
(-C3H6-S4-C3H6-)0.25(-C8H17)0.50(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)161.7g(0.3mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)138.3g(0.5mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水14.9g(水0.83mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液7.2gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が220mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は16.1質量%であり、スルフィド当量は796g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー2とする。
(-C3H6-S4-C3H6-)0.27(-C8H17)0.45(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)161.7g(0.3mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)110.6g(0.4mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水13.5g(水0.75mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液6.5gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が800mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は17.8質量%であり、スルフィド当量は723g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー3とする。
(-C3H6-S4-C3H6-)0.30(-C8H17)0.40(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)161.7g(0.3mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)83.0g(0.3mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水12.2g(水0.68mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液5.9gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が2,000mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は19.8質量%であり、スルフィド当量は649g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー4とする。
(-C3H6-S4-C3H6-)0.33(-C8H17)0.33(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)210.2g(0.39mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)83.0g(0.3mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水13.0g(水0.72mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液6.3gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が70mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は20.9質量%であり、スルフィド当量は615g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー5とする。
(-C3H6-S4-C3H6-)0.36(-C8H17)0.28(-OC2H5)1.67SiO0.67
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)231.8g(0.43mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)83.0g(0.3mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水13.9g(水0.77mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液6.7gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が220mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は21.4質量%であり、スルフィド当量は599g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー6とする。
(-C3H6-S4-C3H6-)0.37(-C8H17)0.26(-OC2H5)1.67SiO0.67
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)247.9g(0.46mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)83.0g(0.3mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水14.6g(水0.81mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液7.0gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が2,600mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は21.8質量%であり、スルフィド当量は589g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー7とする。
(-C3H6-S4-C3H6-)0.38(-C8H17)0.25(-OC2H5)1.67SiO0.67
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)107.8g(0.2mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)276.5g(1.0mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水18.9g(水1.05mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液9.1gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が10mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は8.4質量%であり、スルフィド当量は1,533g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー8とする。
(-C3H6-S4-C3H6-)0.14(-C8H17)0.71(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)107.8g(0.2mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)221.2g(0.8mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水16.2g(水0.9mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液7.8gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が20mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は9.8質量%であり、スルフィド当量は1,312g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー9とする。
(-C3H6-S4-C3H6-)0.17(-C8H17)0.67(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)107.8g(0.2mol)、オクチルトリエトキシシラン(信越化学工業(株)製、KBE-3083)165.9g(0.6mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水13.5g(水0.75mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液6.5gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が35mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は11.8質量%であり、スルフィド当量は1,091g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー10とする。
(-C3H6-S4-C3H6-)0.20(-C8H17)0.60(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)161.7g(0.3mol)、プロピルトリエトキシシラン(信越化学工業(株)製、KBE-3033)61.9g(0.3mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水12.2g(水0.68mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液5.9gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が350mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は22.2質量%であり、スルフィド当量は579g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー11とする。
(-C3H6-S4-C3H6-)0.33(-C3H7)0.33(-OC2H5)1.50SiO0.75
撹拌機、還流冷却器、滴下ロート及び温度計を備えた1Lセパラブルフラスコにビス(トリエトキシシリルプロピル)テトラスルフィド(信越化学工業(株)製、KBE-846)247.9g(0.46mol)、プロピルトリエトキシシラン(信越化学工業(株)製、KBE-3033)61.9g(0.3mol)、エタノール162.0gを納めた後、室温にて0.5N塩酸水14.6g(水0.81mol)を滴下した。次いで、80℃にて2時間撹拌した。その後、濾過、5質量%KOH/EtOH溶液7.0gを滴下し、80℃で2時間撹拌した。更に、減圧濃縮、濾過することで、粘度が800mm2/sの褐色透明液体を得た。元素分析の結果、得られたシリコーンオリゴマーの硫黄含有量は23.6質量%であり、スルフィド当量は543g/molであり、下記平均組成式で示されるものであった。得られたオリゴマーをオリゴマー12とする。
(-C3H6-S4-C3H6-)0.38(-C3H7)0.25(-OC2H5)1.67SiO0.67
表1,2に示すように、油展エマルジョン重合SBR(JSR(株)製#1712)110部、NR(一般的なRSS#3グレード)20部、カーボンブラック(一般的なN234グレード)20部、シリカ(日本シリカ工業(株)製ニプシルAQ)50部、実施例1~7及び比較例1~5のオリゴマー又は下記に示す比較化合物A6.5部、ステアリン酸1部、老化防止剤6C(大内新興化学工業(株)製ノクラック6C)1部を配合してマスターバッチを調製した。これに亜鉛華3部、加硫促進剤DM(ジベンゾチアジルジスルフィド)0.5部、加硫促進剤NS(N-t-ブチル-2-ベンゾチアゾリルスルフェンアミド)1部、硫黄1.5部を加えて混練し、ゴム組成物を得た。
(1)ムーニー粘度
JIS K 6300に準拠し、余熱1分、測定4分、温度130℃にて測定し、比較例11を100として指数で表した。指数値が小さいほど、ムーニー粘度が低く加工性に優れている。
(2)動的粘弾性
粘弾性測定装置(レオメトリックス社製)を使用し、引張の動歪5%、周波数15Hz、60℃の条件にて測定した。なお、試験片は厚さ0.2cm、幅0.5cmのシートを用い、使用挟み間距離2cmとして初期荷重を160gとした。tanδの値は比較例11を100として指数で表した。指数値が小さいほど、ヒステリシスロスが小さく低発熱性である。
JIS K 6264-2:2005に準拠し、ランボーン型磨耗試験機を用いて室温、スリップ率25%の条件で試験を行い、比較例11の磨耗量の逆数を100として指数で表した。指数値が大きいほど、磨耗量が少なく耐磨耗性に優れることを示す。
Claims (9)
- 下記平均組成式(1)で表されるスルフィド基を有する有機基を含有し、かつスルフィド当量が1,000g/mol以下であることを特徴とするオルガノポリシロキサン。
(A)a(B)b(C)c(R1)dSiO(4-2a-b-c-d)/2 (1)
(式中、Aはスルフィド基含有二価有機基であり、Bは炭素数5~10の一価炭化水素基であり、Cは加水分解性基及び/又は水酸基であり、R1は炭素数1~4の一価炭化水素基であり、a、b、c、dは、0<2a<1、0<b<1、0<c<3、0≦d<2、且つ0<2a+b+c+d<4である。) - 前記Aのスルフィド基含有二価有機基が、下記式(2)
*-(CH2)n-Sx-(CH2)n-* (2)
(式中、nは1~10の整数であり、xは統計的平均値で1~6を表す。*-、-*は結合手を示す。)
で表され、前記Cの加水分解性基及び/又は水酸基が、下記式(3)
*-OR2 (3)
(式中、R2は炭素数1~20のアルキル基、炭素数6~10のアリール基、炭素数7~10のアラルキル基、炭素数2~10のアルケニル基、又は水素原子を表す。*-は結合手を示す。)
で表されることを特徴とする請求項1に記載のオルガノポリシロキサン。 - 上記平均組成式(1)において、Bが炭素数8~10の一価炭化水素基であることを特徴とする請求項1又は2に記載のオルガノポリシロキサン。
- スルフィド当量が500~800g/molであることを特徴とする請求項1~3のいずれか1項に記載のオルガノポリシロキサン。
- 下記一般式(4)
で表される有機ケイ素化合物20~95モル%と、下記一般式(5)
で表される有機ケイ素化合物5~80モル%と、下記一般式(6)
で表される有機ケイ素化合物0~10モル%との共加水分解縮合物からなるオルガノポリシロキサン。 - 請求項1~5のいずれか1項に記載のオルガノポリシロキサンを含んでなるゴム用配合剤。
- 更に、少なくとも1種の粉体を含有してなり、前記オルガノポリシロキサン(A)と少なくとも1種の粉体(B)の質量比が、(A)/(B)=70/30~5/95の割合である請求項6に記載のゴム用配合剤。
- 請求項6又は7に記載のゴム用配合剤を配合してなるゴム組成物。
- 請求項8に記載のゴム組成物を用いて形成されたタイヤ。
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CN103804724B (zh) * | 2012-11-08 | 2018-01-12 | 住友橡胶工业株式会社 | 橡胶组合物及充气轮胎 |
EP2960285A4 (en) * | 2013-02-25 | 2016-08-31 | Yokohama Rubber Co Ltd | TIRE RUBBER COMPOSITION FOR HEAVY LOADS AND PNEUMATIC TIRES |
DE112014001758B4 (de) * | 2013-03-29 | 2020-11-12 | The Yokohama Rubber Co., Ltd. | Verwendung einer Kautschukzusammensetzung zur Herstellung eines Schwerlast-Luftreifens und daraus hergestellter Schwerlast-Luftreifen |
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2015
- 2015-01-26 JP JP2015012317A patent/JP6384338B2/ja active Active
- 2015-10-22 US US15/546,242 patent/US20180022876A1/en not_active Abandoned
- 2015-10-22 EP EP15880068.0A patent/EP3252062B1/en active Active
- 2015-10-22 KR KR1020177022943A patent/KR102176683B1/ko active IP Right Grant
- 2015-10-22 WO PCT/JP2015/079788 patent/WO2016121175A1/ja active Application Filing
- 2015-10-22 CN CN201580074542.6A patent/CN107207542A/zh active Pending
Patent Citations (3)
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WO2014002750A1 (ja) * | 2012-06-27 | 2014-01-03 | 横浜ゴム株式会社 | タイヤトレッド用ゴム組成物および空気入りタイヤ |
JP2014028797A (ja) * | 2012-06-27 | 2014-02-13 | Shin Etsu Chem Co Ltd | オルガノポリシロキサン及びその製造方法 |
JP2014214091A (ja) * | 2013-04-23 | 2014-11-17 | 信越化学工業株式会社 | 有機官能基含有オルガノポリシロキサンの製造方法 |
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Also Published As
Publication number | Publication date |
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KR102176683B1 (ko) | 2020-11-09 |
JP2016138164A (ja) | 2016-08-04 |
EP3252062A1 (en) | 2017-12-06 |
CN107207542A (zh) | 2017-09-26 |
KR20170108980A (ko) | 2017-09-27 |
JP6384338B2 (ja) | 2018-09-05 |
EP3252062A4 (en) | 2018-09-19 |
EP3252062B1 (en) | 2022-11-30 |
US20180022876A1 (en) | 2018-01-25 |
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