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公开(公告)号：DE69315587T2
公开(公告)日：1998-04-16
申请号：DE69315587
申请日：1993-07-14
Applicant: BRIDGESTONE CORP
Inventor： NAKANE SHINSUKE , KANOU KAZUHIKO , HASHIMOTO TAKATSUGU
Abstract: A tire tread rubber composition comprising: 100 parts by weight of a natural rubber and/or a synthetic diene rubber, 40 to 100 parts by weight or carbon black having a cetyltrimethylammonium bromide (CTAB) adsorption specific surface area of 90-220m /g and a 24MADBP absorption number of 90-140 ml/100 g, and 0.1 to 20 parts by weight of unsaturated fatty acids each having at least two carbon-carbon double bonds in its molecule, said acids involving at least 10 wt.% of a conjugated dienoic acid having at least one pair of carbon-carbon double bonds conjugated with each other in its molecule. The composition is suitable for the production of pneumatic tires, in particular, heavy-load pneumatic tires having excellent wear resistance.
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公开(公告)号：ES2111549T3
公开(公告)日：1998-03-16
申请号：ES91115926
申请日：1991-09-19
Applicant: BRIDGESTONE CORP , BRIDGESTONE FIRESTONE INC
Inventor： JOYNER DWAYNE A , KANG JUNG W , HASHIMOTO TAKATSUGU , YUTO KAZUAKI , STUCK BONNIE L
Abstract: High-performance tires comprising treads made of elastomer compositions comprising (A) ultra high molecular weight copolymer compositions of 1,3-conjugated dienes and aromatic vinyl compounds having a weight average molecular weight of greater than about 1,000,000; (B) extender oil; and (C) carbon black are described. The ultra high molecular weight copolymer compositions which are also characterized as having an intrinsic viscosity in tetrahydrofuran of at least about 4.0 may be obtained by a process which comprises polymerizing a 1,3-conjugated diene and a vinyl aromatic compound in a hydrocarbon solvent in the presence of a trimetalated 1 -alkyne catalyst which comprises the reaction product of a 1-alkyne containing at least 4 carbon atoms, an organo metallic compound R DEG M and a 1,3-conjugated diene wherein R DEG is a hydrocarbyl group, M is an alkali metal, the mole ratio of R DEG M to 1-alkyne is about 3:1 and the mole ratio of conjugated diene to 1-alkyne is from about 2:1 to about 30:1.
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公开(公告)号：DE69118229T2
公开(公告)日：1996-08-29
申请号：DE69118229
申请日：1991-04-16
Applicant: BRIDGESTONE FIRESTONE INC , BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU , OBERSTER ARTHUR E , ROGGEMAN DAVID M , KANG JUNG W
Abstract: A method for incorporating metal salts of alpha , beta -ethylenically unsaturated carboxylic acids into polymers and improving the cured physical properties of vulcanizable rubber compositions based on such polymers. The method includes the steps of preparing a polymer cement in a suitable organic solvent, forming a suspension of the metal salt of an alpha , beta -ethylenically unsaturated carboxylic acid in a suitable aliphatic hydrocarbon solvent miscible with the organic solvent, mixing the polymer cement and the suspension together and thereafter removing the solvents to provide the metal salt uniformly dispersed within the polymer.
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公开(公告)号：ES2082879T3
公开(公告)日：1996-04-01
申请号：ES91106050
申请日：1991-04-16
Applicant: BRIDGESTONE FIRESTONE INC , BRIDGESTONE CORP
Inventor： OBERSTER ARTHUR E , HASHIMOTO TAKATSUGU
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公开(公告)号：ES2080874T3
公开(公告)日：1996-02-16
申请号：ES91115967
申请日：1991-09-19
Applicant: BRIDGESTONE CORP
Inventor： KANG JUNG W , SEAVER GARY B , HASHIMOTO TAKATSUGU
Abstract: Elastomer compositions comprising (A) ultra high molecular weight copolymer compositions of 1,3-conjugated dienes and aromatic vinyl compounds having a weight average molecular weight of greater than about 1,000,000 and (B) oil are described. The ultra high molecular weight copolymer compositions which are also characterized as having an intrinsic viscosity in tetrahydrofuran of at least about 4.0 may be obtained by a process which comprises polymerizing a 1,3-conjugated diene and a vinyl aromatic compound in a hydrocarbon solvent in the presence of a trimetalated 1-alkyne catalyst which comprises the reaction product of a 1-alkyne containing at least 4 carbon atoms, an organo metallic compound R DEG M and a 1,3-conjugated diene wherein R DEG is a hydrocarbyl group, M is an alkali metal, the mole ratio of R DEG M to 1-alkyne is about 3:1 and the mole ratio of conjugated diene to 1-alkyne is from about 2:1 to about 30:1. The oil extended elastomer compositions of the present invention preferably contain large amounts of oil such as 80 parts or higher per 100 parts of copolymer.
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Patent Agency Ranking
公开(公告)号：DE69110020T2
公开(公告)日：1995-09-28
申请号：DE69110020
申请日：1991-12-03
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU , WATANABE SHUICHI , MAKINO YOSHIHIRO , KANG JUNG W
IPC: B60C1/00 , C08F4/42 , C08F4/48 , C08F236/10 , C08F297/06 , C08K3/04 , C08L7/00 , C08L9/06 , C08L21/00
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公开(公告)号：CA2051921A1
公开(公告)日：1992-03-22
申请号：CA2051921
申请日：1991-09-20
Applicant: BRIDGESTONE CORP
Inventor： KANG JUNG W , SEAVER GARY B , HASHIMOTO TAKATSUGU
Abstract: Elastomer compositions comprising (A) ultra high molecular weight copolymer compositions of 1,3-conjugated dienes and aromatic vinyl compounds having a weight average molecular weight of greater than about 1,000,000 and (B) oil are described. The ultra high molecular weight copolymer composition s which are also characterized as having an intrinsic viscosity in tetrahydrofuran of at least about 4.0 may be obtained by a process which comprises polymerizing a 1,3-conjugated diene and a vinyl aromatic compound in a hydrocarbon solven t in the presence of a trimetalated 1-alkyne catalyst which comprises the reaction product of a 1-alkyne containing at least 4 carbon atoms, an organo metallic compound R.degree.M and a 1,3-conjugated diene wherein R.degree. is a hydrocarbyl group, M is an alkali metal, the mole ratio of R.degree.M to 1-alkyne is about 3:1 an d the mole ratio of conjugated diene to 1-alkyne is from about 2:1 to about 30:1. The o il extended elastomer compositions of the present invention preferably contain large amounts of oil such as 80 parts or higher per 100 parts of copolymer.
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公开(公告)号：GB2227020A
公开(公告)日：1990-07-18
申请号：GB8927264
申请日：1989-12-01
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU , FUKUTA YASUNORI
Abstract: A mechanochemical actuator capable of producing mechanical energy in response to stimuli such as change in pH or salt concentration comprises a polymer composed of hydrophobic polymeric segments and hydrophilic polymeric segments, said hydrophobic polymeric segments being derived from either (1) a copolymer formed from a hydrophobic polymerizable monomer and a polymerizable monomer capable of forming hydrophilic polymeric segments after copolymerization with said hydrophobic polymerizable monomer and, if necessary, polymer modification, or (2) a modified product of said copolymer. Examples include a saponified product of an ethylene-acrylic acid copolymer or butadiene-acrylic acid copolymer, or a maleic acid-modified product of EPDM or polybutadiene, or a sulfone-modified product of EPDM or polybutadiene. The actuator can be used in small machines (eg robots), medical appliances and prosthetic devices.
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公开(公告)号：AU598814B2
公开(公告)日：1990-07-05
申请号：AU7349487
申请日：1987-05-28
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU , TOMITA SEISUKE
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公开(公告)号：CA2051937C
公开(公告)日：2005-08-09
申请号：CA2051937
申请日：1991-09-20
Applicant: BRIDGESTONE CORP , BRIDGESTONE FIRESTONE INC
Inventor： JOYNER DWAYNE A , KANG JUNG W , HASHIMOTO TAKATSUGU , YUTO KAZUAKI , STUCK BONNIE L
IPC: B60C1/00 , C08F4/46 , C08F236/10 , C08K3/04 , C08L9/06 , C08L21/00 , C08L91/00 , C08F212/04 , C08L9/00 , C08F236/04
Abstract: High-performance tires comprising treads made of elastomer compositions comprising (A) ultra high molecular weight copolymer compositio ns of 1,3-conjugated dienes and aromatic vinyl compounds having a weight averag e molecular weight of greater than about 1,000,000; (B) extender oil; and (C) carbon black are described. The ultra high molecular weight copolymer compositions which are also characterised as having an intrinsic viscosity i n tetrahydrofuran of at least about 4.0 may be obtained by a process which comprises polymerizing a 1,3-conjugated diene and a vinyl aromatic compound in a hydrocarbon solvent in the presence of a trimetalated 1-alkyne catalyst which comprises the reaction product of a 1-alkyne containing at least 4 carbon atoms, an organo metallic compound R~M and a 1,3-conjugated diene wherein R~ is a hydrocarbyl group, M is an alkali metal, the mole ratio of R~M to 1- alkyne is about 3:1 and the mole ratio of conjugated diene to 1-alkyne is from abou t 2:1 to about 30:1.
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