JP2012525460A - シランにより変性したエラストマー組成物 - Google Patents
シランにより変性したエラストマー組成物 Download PDFInfo
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- JP2012525460A JP2012525460A JP2012507738A JP2012507738A JP2012525460A JP 2012525460 A JP2012525460 A JP 2012525460A JP 2012507738 A JP2012507738 A JP 2012507738A JP 2012507738 A JP2012507738 A JP 2012507738A JP 2012525460 A JP2012525460 A JP 2012525460A
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- JP
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- Prior art keywords
- silane
- diene elastomer
- elastomer
- group
- diene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 133
- 239000000203 mixture Substances 0.000 title claims abstract description 101
- 239000000806 elastomer Substances 0.000 title claims abstract description 79
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910000077 silane Inorganic materials 0.000 title claims abstract description 46
- 150000004756 silanes Chemical class 0.000 claims abstract description 67
- 229920003244 diene elastomer Polymers 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 45
- 150000003254 radicals Chemical class 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000007822 coupling agent Substances 0.000 claims abstract description 23
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 20
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 125000004429 atom Chemical group 0.000 claims abstract description 7
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 6
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000005060 rubber Substances 0.000 claims description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 48
- 239000000945 filler Substances 0.000 claims description 48
- -1 acryloxy groups Chemical group 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 claims description 25
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 23
- 150000001993 dienes Chemical class 0.000 claims description 23
- 229920003052 natural elastomer Polymers 0.000 claims description 22
- 229920001194 natural rubber Polymers 0.000 claims description 22
- 244000043261 Hevea brasiliensis Species 0.000 claims description 21
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- 238000002156 mixing Methods 0.000 claims description 20
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 239000011593 sulfur Substances 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 13
- KBQVDAIIQCXKPI-UHFFFAOYSA-N 3-trimethoxysilylpropyl prop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C=C KBQVDAIIQCXKPI-UHFFFAOYSA-N 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 12
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- XDQWJFXZTAWJST-UHFFFAOYSA-N 3-triethoxysilylpropyl prop-2-enoate Chemical compound CCO[Si](OCC)(OCC)CCCOC(=O)C=C XDQWJFXZTAWJST-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 229920001519 homopolymer Polymers 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 claims description 3
- 229920001059 synthetic polymer Polymers 0.000 claims description 3
- JPPHEZSCZWYTOP-UHFFFAOYSA-N trimethoxysilylmethyl prop-2-enoate Chemical compound CO[Si](OC)(OC)COC(=O)C=C JPPHEZSCZWYTOP-UHFFFAOYSA-N 0.000 claims description 3
- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 claims description 2
- WDUXKFKVDQRWJN-UHFFFAOYSA-N triethoxysilylmethyl prop-2-enoate Chemical compound CCO[Si](OCC)(OCC)COC(=O)C=C WDUXKFKVDQRWJN-UHFFFAOYSA-N 0.000 claims description 2
- LIBWSLLLJZULCP-UHFFFAOYSA-N n-(3-triethoxysilylpropyl)aniline Chemical compound CCO[Si](OCC)(OCC)CCCNC1=CC=CC=C1 LIBWSLLLJZULCP-UHFFFAOYSA-N 0.000 claims 2
- DTPZJXALAREFEY-UHFFFAOYSA-N n-methyl-3-triethoxysilylpropan-1-amine Chemical compound CCO[Si](OCC)(OCC)CCCNC DTPZJXALAREFEY-UHFFFAOYSA-N 0.000 claims 2
- RWLDCNACDPTRMY-UHFFFAOYSA-N 3-triethoxysilyl-n-(3-triethoxysilylpropyl)propan-1-amine Chemical compound CCO[Si](OCC)(OCC)CCCNCCC[Si](OCC)(OCC)OCC RWLDCNACDPTRMY-UHFFFAOYSA-N 0.000 claims 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims 1
- 150000003464 sulfur compounds Chemical class 0.000 claims 1
- 239000003999 initiator Substances 0.000 abstract description 16
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 31
- 239000003795 chemical substances by application Substances 0.000 description 18
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- 238000004898 kneading Methods 0.000 description 13
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 12
- 230000000930 thermomechanical effect Effects 0.000 description 12
- 239000006229 carbon black Substances 0.000 description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
- 238000012545 processing Methods 0.000 description 10
- 229920003048 styrene butadiene rubber Polymers 0.000 description 10
- 239000002174 Styrene-butadiene Substances 0.000 description 9
- 125000000217 alkyl group Chemical group 0.000 description 9
- 230000000875 corresponding effect Effects 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 229910000323 aluminium silicate Inorganic materials 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000005062 Polybutadiene Substances 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 150000007942 carboxylates Chemical class 0.000 description 5
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 125000006575 electron-withdrawing group Chemical group 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000007792 addition Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000010923 batch production Methods 0.000 description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 4
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
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- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical class S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- MCDBEBOBROAQSH-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propyl prop-2-enoate Chemical compound CO[Si](C)(OC)CCCOC(=O)C=C MCDBEBOBROAQSH-UHFFFAOYSA-N 0.000 description 3
- ZCRUJAKCJLCJCP-UHFFFAOYSA-N 3-[methoxy(dimethyl)silyl]propyl prop-2-enoate Chemical compound CO[Si](C)(C)CCCOC(=O)C=C ZCRUJAKCJLCJCP-UHFFFAOYSA-N 0.000 description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
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- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 3
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- 125000003277 amino group Chemical group 0.000 description 2
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- LSZKGNJKKQYFLR-UHFFFAOYSA-J tri(butanoyloxy)stannyl butanoate Chemical compound [Sn+4].CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O LSZKGNJKKQYFLR-UHFFFAOYSA-J 0.000 description 1
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- 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
- 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 1
- CPRPKIMXLHBUGA-UHFFFAOYSA-N triethyltin Chemical compound CC[Sn](CC)CC CPRPKIMXLHBUGA-UHFFFAOYSA-N 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F253/00—Macromolecular compounds obtained by polymerising monomers on to natural rubbers or derivatives thereof
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/25—Incorporating silicon atoms into the molecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/28—Reaction with compounds containing carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
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Abstract
R”-CH=CH-C(O)X-Y-SiRaR’(3−a) (I)または
R”-C≡C-C(O)X-Y-SiRaR’(3−a) (II)
(式中、Rは加水分解性基を表し;R’は1〜6個の炭素原子を有するヒドロカルビル基を表し;aは1〜3を含めた範囲内の値を有し;Yは結合-C(O)X-とSi原子とを隔てている少なくとも1つの炭素原子を含む二価の有機スペーサー結合を表し、XはSまたはOから選択され、;かつR”は水素、または-CH=CH-または-C≡C-結合に関して電子求引性効果を有する基を表す)。本発明は、フリーラジカル開始剤の存在下でジエンエラストマーと効率的に反応することができるシランを提供する。
Description
国際公開第01/49781号に記載されている方法は、ラジカル開始剤の存在を必要とする。特開2008-184545号公報および国際公開第02/22728号に記載されている特定のシランは、おそらくはコストおよび/または安定性の問題から市販されていない。
R”-CH=CH-C(O)X-Y-SiRaR’(3−a)(I)または
R”-C≡C-C(O)X-Y-SiRaR’(3−a)(II)
(式中、Rは加水分解性基を表し;R’は1〜6個の炭素原子を有するヒドロカルビル基を表し;aは1〜3を含めた範囲内の値を有し;Yは結合-C(O)X-とSi原子とを隔てている少なくとも1つの炭素原子を含む二価の有機スペーサー結合を表し、XはSまたはOから選択され;および、R”は水素、または-CH=CH-もしくは-C≡C-結合に関して電子求引性効果を有する基を表す)を有する。
式R”-CH(P)-CH2-C(O)X-Y-SiRaR’(3−a)および/または
式R”-CH2-CH(P)-C(O)X-Y-SiRaR’(3−a)および/または
式R”-C(P)=CH-C(O)X-Y-SiRaR’(3−a)および/または
式R”-CH=C(P)-C(O)X-Y-SiRaR’(3−a)
(式中、Pはジエンエラストマーポリマー残基を表し、Y、X、R、R’、R”およびaは上で定義する)の基でグラフトする。
R”-CH=CH-C(O)X-Y-SiRaR’(3−a) (I)または
R”-C≡C-C(O)X-Y-SiRaR’(3−a) (II)
(式中、R、R’、a、Y、XおよびR”は上で定義する)を有するシランの使用も含む。
R”-CH=CH-C(O)X-Y-SiRaR’(3−a) (I)または
R”-C≡C-C(O)X-Y-SiRaR’(3−a) (II)
の不飽和シランの-SiRaR’(3−a)基中の各加水分解性基Rは、同一または異なっていてもよく、好ましくはアルコキシ基であるが、アシルオキシ基などの他の加水分解性基、例えばアセトキシ基、ケトオキシム基、アミノ基、アミド基、アミノキシ基またはアルケニルオキシ基も用いることができる。Rがアルコキシ基を含む場合、各Rはまた一般的に1〜6個の炭素原子の直線状もしくは分枝状のアルキル鎖、またはエチレングリコールポリマー鎖を含む。しかしながら、もっとも好ましくは、各Rがメトキシ基またはエトキシ基である。シラン(I)または(II)中のaの値は、例えば3とすることができ、例えばシランがトリメトキシシランまたはトリエトキシシランであって、アルコキシシラン由来の反応部位を用いて硬化が行われる場合、最大数の架橋部位を与えることができる。しかしながら、各アルコキシ基は加水分解されるときに揮発性有機アルコールを生成し、シラン(I)または(II)中のaの値は、2であるかまたは1ですらあって加工、架橋もしくは加硫の間または硬化もしくは粗製ゴムコンパウンドの寿命の間に放出される揮発性有機物質を最小限にすることが好まれる場合がある。R’基は、存在するならば、好ましくはメチル基、エチル基またはフェニル基である。Si原子上の別の置換基は、次の特許文献、国際公開第2004/078813号、国際公開第2005/007066号、米国特許出願公開第20090036701号明細書、独国特許出願公開第10223073号明細書および欧州特許出願公開第1683801号明細書または米国特許出願公開第20060161015号明細書に基づくことができる。
R”-CH=CH-C(O)X-Y-SiRaR’(3−a) (I)または
R”-C≡C-C(O)X-Y-SiRaR’(3−a) (II)
の不飽和シランにおいて、スペーサー結合Yは一般には少なくとも1つの炭素原子を含む二価の有機基、例えば、メチレン、エチレンもしくはプロピレンなどのアルキレン基またはアリーレン基とすることができる。しかしながら、上述したように、YはまたS、OおよびNなどのヘテロ原子を含んでもよい。R”基が水素を表しYがアルキレン結合である場合、不飽和シラン(I)中の部分R”-CH=CH-C(O)X-Y-はアクリルオキシアルキル基である。我々はアクリルオキシアルキルシランが他の不飽和シラン、例えばメタクリルオキシアルキルシランよりもさらに容易にジエンエラストマーに対しグラフトすることを見出した。
加工および寿命の間の有毒メタノール放出を減少させるため、メトキシシランよりもエトキシシランが好まれる。
RaR’(3−a)Si-Y-X(O)C-CH=CH-C(O)X-Y-SiRaR’(3−a)、または
RaR’(3−a)Si-Y-X(O)C-C≡C-C(O)X-Y-SiRaR’(3−a)
とすることができる。
RaR’(3−a)Si-Y-X(O)C-CH=CH-C(O)X-Y-SiRaR’(3−a)、または
RaR’(3−a)Si-Y-X(O)C-C≡C-C(O)X-Y-SiRaR’(3−a)が、例えば分子の各側で異なっているY、Rおよび/またはR’を有する非対称であってもよい。
(a)4〜12個の炭素原子を有する共役ジエンモノマーの重合によって得られる任意のホモポリマー;
(b)互いに共役した1種以上のジエンのまたは8〜20個の炭素原子を有する1種以上のビニル芳香族化合物との共重合によって得られる任意のコポリマー;
(c)例えば、エチレンまたはプロピレンと前述の種類の非共役ジエンモノマー、具体的には1,4-ヘキサジエン、エチリデンノルボルネンまたはジシクロペンタジエンなどとから得られるエラストマーなどの、エチレンまたは3〜6個の炭素原子を有する[α]-オレフィンと6〜12個の炭素原子を有する非共役ジエンモノマーとの共重合によって得られる三元共重合体;
(d)イソブテンとイソプレンとのコポリマー(ブチルゴム)、およびこの種類の型のコポリマーがハロゲン化、具体的には塩素化または臭素化されたもの。
実施例1ならびに比較例C1およびC2のゴム製品を、下に記載する成分を用いて、下に記載する手順に従って調製した。ゴム100部あたりの割合(phr)で表現した量を表1に記載する。
・NR SVR 10,CV60 − 天然ゴムの標準ベトナムゴム、純度等級10、一定粘性(CV) 60m.u.(ムーニー単位)
・シリカ − Rhodiaから入手したゼオシル(登録商標)1165MP
・シラン1 − γ-アクリルオキシプロピルトリメトキシシラン
・シラン2 − ビニルトリメトキシシラン
・ACST − ステアリン酸
・ZnO − 酸化亜鉛
・6PPD − N-1,3-ジメチルブチル-N-フェニル-パラ-フェニレンジアミン(“サントフレックス(登録商標)6-PPD”)
・S − 元素状硫黄
・CBS − N-シクロヘキシル-2-ベンゾチアジルスルフェンアミド(Flexsysから入手した“サントキュア(Santocure、登録商標)CBS”)
・TMQ − 重合した2,2,4-トリメチル-1,2-ヒドロキノリン
・ルペロックス(Luperox、登録商標)230XL40 − CaCO3上に担持されたn-ブチル-4,4’-ジ(tert-ブチルペルオキシ)バレラート(Arkemaから入手)
・ルペロックス(登録商標)A75,75% −CaCO3上に担持されたベンゾイルペルオキシド(Arkemaから入手)
・N330、N234−ASTM D1765に準拠した通常のカーボンブラック
− ひずみ掃引:加硫した組成物のサンプル(厚さ2.5mmおよび断面40mm2)を55℃の温度管理下で10Hzの周波数の交互の単純正弦波せん断応力に供した応答を記録する。0.1〜50%の変形の振幅でスキャニングを行い、損失係数tan dの最大実測値を記録し、その値をtanδ6%と表す。tanδ6%値はタイヤの転がり抵抗とよく相関しており、より低減した転がり抵抗はより低いtanδ6%となり、タイヤ性能はより良好となるであろう。G’0は、挙動が応力に対して直線的であるときに非常に低いひずみで測定した弾性率である。G’maxは50%ひずみでの弾性率である。0.1〜50%の第一ひずみ掃引(G’0)の後の動的特性を記録し、次いで50%〜0.1%の第二ひずみ掃引も記録する。第一ひずみ掃引での弾性率と低ひずみへの戻り(return)の後の弾性率(G’0 return)の間の差をΔG’0と表し、これは応力下でのタイヤのハンドリング安定性とよく相関している。第二ひずみ掃引後のG’0 returnとG’maxの間の差をΔG’returnと表す。tanδ6%、第二ひずみ掃引値は、第二ひずみ掃引の間の最大の損失係数tan(δ)に対応している。tanδ6%とtanδ6%、第二ひずみ掃引の両方の減少は、ゴム組成物から製造したタイヤの転がり抵抗の低減とよく相関している。
− 温度掃引:加硫した組成物のサンプル(厚さ2.5mm、高さ14mmおよび長さ4.0mm)を1.25マイクロメートル(ミクロン)の制御変位下で10Hzの周波数の交互の単純正弦波せん断応力に供した応答。サンプルを室温におき、5℃/分の速度で−100℃まで冷却する。次いで温度を20分間−100℃に安定させて、サンプルが平衡温度状態となるのを可能にする。次いで温度を5℃/分の速度で100℃まで上昇させる。損失係数および剛性は弾性率およびtan(δ)を与える。tanδmaxおよび/または0℃での値(tanδ0℃)はウエットスキッド性能に関連する。tanδmaxおよび0℃でのtan(δ)の値(tanδ0℃)における増加は、改善したウエットスキッド性能を示す。
実施例1に記載した成分を表6に記載した量で用いて、以下に示す手順に従って、実施例2および比較例C3のゴム製品を調製した。
実施例2の手順に従って、以下の表9に示す配合に従って変性ゴム組成物を調製した。表9の成分は実施例1で提示する通りである。
実施例2の手順に従って、以下の表11に示す配合に従って変性ゴム組成物を調製した。表11中の成分は実施例1で提示する通りである。
Claims (24)
- ジエンエラストマー中に遊離基を発生させることのできる化合物の存在下で、ケイ素に結合した少なくとも1つの加水分解性基を有するオレフィン性不飽和シランを用いた反応によってジエンエラストマーを変性する方法であって、
前記シランが式:
R”-CH=CH-C(O)X-Y-SiRaR’(3−a) (I)または
R”-C≡C-C(O)X-Y-SiRaR’ (3−a) (II)
(式中、Rは加水分解性基を表し;R’は1〜6個の炭素原子を有するヒドロカルビル基を表し;aは1〜3を含めた範囲内の値を有し;Yは結合-C(O)X-とSi原子とを隔てている少なくとも1つの炭素原子を含む二価の有機スペーサー結合を表し;R”は水素、または-CH=CH-もしくは-C≡C-結合に関して電子求引性効果を有する基を表し;XはSおよびOから選択される)
を有することを特徴とする前記方法。 - 不飽和シラン(I)または(II)の各R基がアルコキシ基であることを特徴とする、請求項1に記載の方法。
- 不飽和シラン(I)または(II)が部分的に加水分解してオリゴマーへ縮合していることを特徴とする、請求項1または2に記載の方法。
- 不飽和シラン(I)がγ-アクリルオキシプロピルトリメトキシシランおよび/またはγ-アクリルオキシプロピルトリエトキシシランを含むことを特徴とする、請求項1〜3のいずれか1項に記載の方法。
- 不飽和シラン(I)がアクリルオキシメチルトリメトキシシランおよび/またはアクリルオキシメチルトリエトキシシランを含むことを特徴とする、請求項1〜3のいずれか1項に記載の方法。
- 前記シランが、二級アミノ官能性アルコキシシランまたはメルカプト-プロピル-アルコキシシランと少なくとも2つのアクリルオキシ基を含む多官能性有機部分とを混合することにより得られることを特徴とする、請求項1〜3のいずれか1項に記載の方法。
- 前記シランが、ペンタエリスリトールテトラアクリレートとN-メチル-アミノプロピルトリエトキシシラン、N-フェニル-アミノプロピルトリエトキシシラン、ビス-(トリエトキシシリルプロピル)アミンまたはメルカプトプロピルトリエトキシシランとを1:1〜1:3.5(アクリレート:シラン)のモル比で混合することにより得られることを特徴とする、請求項6項に記載の方法。
- 前記シランがトリメチロールプロパントリアクリレートとN-メチル-アミノプロピルトリエトキシシランまたはN-フェニル-アミノプロピルトリエトキシシランまたはメルカプトプロピルトリエトキシシランとを1:1〜1:2.5のモル比で混合することにより得られることを特徴とする、請求項6に記載の方法。
- ジエンエラストマーがイソプレン系ゴム、好ましくは天然ゴムを含むことを特徴とする、請求項1〜8のいずれか1項に記載の方法。
- ジエンエラストマーがジエンモノマーのホモポリマーまたはコポリマーである合成ポリマーであることを特徴とする、請求項1〜9のいずれか1項に記載の方法。
- 不飽和シラン(I)または(II)が、反応の間、ジエンエラストマーを基準として0.5〜15.0重量%存在することを特徴とする、請求項1〜10のいずれか1項に記載の方法。
- 該ポリマー中に遊離基を発生させることのできる化合物が有機ペルオキシドであって、グラフト化反応の間に該ポリマーを基準として0.01〜2重量%存在することを特徴とする、請求項1〜11のいずれか1項に記載の方法。
- ジエンエラストマーと不飽和シラン(I)または(II)とが90℃〜200℃、好ましくは120℃〜180℃の温度で反応することを特徴とする、請求項1〜12のいずれか1項に記載の方法。
- ジエンエラストマーと不飽和シラン(I)または(II)との反応の間に充填剤が存在し、それによって不飽和シラン(I)または(II)が充填剤とジエンエラストマーとの間のカップリング剤として作用することを特徴とする、請求項1〜13のいずれか1項に記載の方法。
- 充填剤がシリカであることを特徴とする、請求項14に記載の方法。
- 請求項14または15に記載の方法によって調製した充填エラストマー組成物を成形および硬化することを特徴とする、ゴム物品の生産方法。
- 充填エラストマー組成物を硫黄、硫黄化合物またはペルオキシドによって硬化することを特徴とする、請求項16に記載の方法。
- 充填エラストマー組成物をシラノール縮合触媒の存在下で水分に曝露して硬化することを特徴とする、請求項16に記載の方法。
- Yが1つ以上のヘテロ原子を含むおよび/またはXがOである、請求項1〜18のいずれか1項に記載の方法。
- ジエンエラストマー中に遊離基部位を発生させることのできる化合物の存在下で、補強性充填剤を含むジエンエラストマー組成物用のカップリング剤としての式:
R”-CH=CH-C(O)X-Y-SiRaR’(3−a) (I)または
R”-C≡C-C(O)X-Y-SiRaR’ (3−a) (II)
(式中、Rは加水分解性基を表し;R’は1〜6個の炭素原子を有するヒドロカルビル基を表し;aは1〜3を含めた範囲内の値を有し;Yは結合-C(O)X-とSi原子とを隔てている少なくとも1つの炭素原子を含む二価の有機スペーサー結合を表し;R”は水素、または-CH=CH-もしくは-C≡C-結合に関して電子求引性効果を有する基を表し;XはSおよびOから選択される)
を有するシランの使用。 - タイヤもしくはその任意の部分または工業用のゴム製品、ベルトもしくはホースの生産における、請求項1〜19のいずれか1項に記載の方法によって生成した変性ジエンエラストマー組成物の使用。
- Yが1つ以上のヘテロ原子を含むおよび/またはXがOである、請求項21に記載の使用。
- ジエンエラストマー、ケイ素に結合した少なくとも1つの加水分解性基を有するオレフィン性不飽和シラン、およびジエンエラストマー中に遊離基部位を発生させることのできる化合物から得た硬化性ジエンエラストマー組成物であって、
前記シランが式:
R”-CH=CH-C(O)X-Y-SiRaR’(3−a) (I)または
R”-C≡C-C(O)X-Y-SiRaR’ (3−a) (II)
(式中、Rは加水分解性基を表し;R’は1〜6個の炭素原子を有するヒドロカルビル基を表し;aは1〜3を含めた範囲内の値を有し;Yは結合-C(O)X-とSi原子とを隔てている少なくとも1つの炭素原子を含む二価の有機スペーサー結合を表し;R”は水素、または-CH=CH-もしくは-C≡C-結合に関して電子求引性効果を有する基を表し;XはSおよびOから選択される)
を有することを特徴とする前記組成物。 - Yが1つ以上のヘテロ原子を含むおよび/またはXがOである、請求項23に記載の硬化性ジエンエラストマー。
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GB0907448A GB0907448D0 (en) | 2009-04-30 | 2009-04-30 | Elastomer compositions modified by silanes |
GBGB1000108.9A GB201000108D0 (en) | 2010-01-06 | 2010-01-06 | Elastometer compositions modified by silanes |
GB1000108.9 | 2010-01-06 | ||
PCT/EP2010/055757 WO2010125124A1 (en) | 2009-04-30 | 2010-04-28 | Elastomer compositions modified by silanes |
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EP (1) | EP2424739A1 (ja) |
JP (1) | JP2012525460A (ja) |
KR (1) | KR20120023724A (ja) |
CN (1) | CN102414034A (ja) |
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WO2010125124A1 (en) | 2010-11-04 |
RU2011141342A (ru) | 2013-06-10 |
KR20120023724A (ko) | 2012-03-13 |
EP2424739A1 (en) | 2012-03-07 |
CN102414034A (zh) | 2012-04-11 |
US20120065319A1 (en) | 2012-03-15 |
BRPI1014302A2 (pt) | 2019-09-24 |
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