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公开(公告)号：MY136828A
公开(公告)日：2008-11-28
申请号：MYPI20015059
申请日：2001-11-01
Applicant: BRIDGESTONE CORP
Inventor： TORATANI HIROTOSHI , IWAFUNE SEIICHIRO , KIJIMA KEN , MAEDA HIROMI , HASHIMOTO TAKATSUGU , YANAGISAWA KAZUHIRO
IPC: C08K3/00 , B29B13/06 , C08C1/075 , C08C1/12 , C08K3/22 , C08K5/10 , C08K5/12 , C08K5/25 , C08L7/00 , C08L7/02
Abstract: PROVIDED IS A NATURAL RUBBER OBTAINED BY DRYING A GATHERED NATURAL RUBBER LATEX WITHOUT COAGULATING, WHEREIN A DRUM DRYER AND/OR A CONVEYOR TYPE DRYER ARE USED FOR DRYING. FURTHER, PROVIDED ARE A PRODUCTION PROCESS FOR A NATURAL RUBBERFILLER MIXTURE PREPARED BY ADDING AT LEAST ONE OF CARBON BLACK AND INORGANIC FILLERS TO A NATURAL RUBBER LATEX, A NATURAL RUBBER ADDED A VISCOSITY STABILIZER COMPRISING HYDRAZIDE COMPOUNDS OR ESTERS OF AROMATIC OR ALIPHATIC POLYCARBOXYLIC ACID DERIVATIVES TO THESE NATURAL RUBBER AND NATURAL RUBBER-FILLER MIXTURE, AND A RUBBER COMPOSITION WHICH IS PREPARED USING THE ABOVE NATURAL RUBBERS AND WHICH IS EXCELLENT IN PRODUCTIVITY, ABRASION RESISTANCE AND FRACTURE RESISTANCE.
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公开(公告)号：ES2111759T3
公开(公告)日：1998-03-16
申请号：ES93916158
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：DE69315587D1
公开(公告)日：1998-01-15
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：CA2040488C
公开(公告)日：1997-03-18
申请号：CA2040488
申请日：1991-04-15
Applicant: BRIDGESTONE FIRESTONE INC , BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU , ROGGEMAN DAVID M , OBERSTER ARTHUR E , 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：DE69115193D1
公开(公告)日：1996-01-18
申请号：DE69115193
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：MX9206505A
公开(公告)日：1994-06-30
申请号：MX9206505
申请日：1992-11-12
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO , YAMAGISHI JUNICHI , HACHIYA KAZUO , HASHIMOTO TAKATSUGU , AKUTAGAWA KEIZO , YAGAWA KAZUO
Abstract: The invention provides a flame-retardant rubber tire comprising an outer rubber body portion consisting essentially of a tread rubber layer 2, a sidewall rubber layer 3 extending inwardly from each side edge of the tread rubber layer 2 toward the vicinity of a bead portion 8 in a radial direction and a rubber chafer layer arranged in the vicinity of the bead portion 8. A flame-retardant rubber composition having an oxygen index of not less than 19.8 but not more than 27.5 is disposed so as to amount to at least 20% by weight of the tread rubber layer 2. Such rubber tires are used in electric vehicles, automobiles, airplanes and the like and having excellent self-extinguishing property and flame-delaying property without damaging other rubber properties.
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公开(公告)号：AU7349487A
公开(公告)日：1987-12-03
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：DE69920302T2
公开(公告)日：2005-11-24
申请号：DE69920302
申请日：1999-02-22
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU
IPC: C08L21/00
Abstract: A rubber composition is a mixture of 100 parts by weight of at least one rubber component selected from a natural rubber and a synthetic rubber and 1 to 120 parts by weight of a softening agent containing 0.1 to 4% by weight of asphaltene. The rubber composition simultaneously has a high high-loss property, a high fracture property and a good workability.
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公开(公告)号：ES2227969T3
公开(公告)日：2005-04-01
申请号：ES99301268
申请日：1999-02-22
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU
IPC: C08L21/00
Abstract: LA INVENCION SE REFIERE A UNA COMPOSICION DE CAUCHO QUE ES UNA MEZCLA DE 100 PARTES EN PESO DE AL MENOS UN COMPONENTE DE CAUCHO SELECCIONADO A PARTIR DE UN CAUCHO NATURAL Y UN CAUCHO SINTETICO, Y DE 1 A 120 PARTES EN PESO DE UN AGENTE ABLANDADOR QUE CONTIENE DEL 0,1 AL 4 % EN PESO DE ASFALTENO. DICHA COMPOSICION DE CAUCHO PRESENTA SIMULTANEAMENTE UNA PROPIEDAD INCREMENTADA DE MERMA ELEVADA, UNA PROPIEDAD DE ELEVADA FRACTURA Y UNA BUENA PROCESABILIDAD.
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公开(公告)号：DE69920302D1
公开(公告)日：2004-10-28
申请号：DE69920302
申请日：1999-02-22
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU
IPC: C08L21/00
Abstract: A rubber composition is a mixture of 100 parts by weight of at least one rubber component selected from a natural rubber and a synthetic rubber and 1 to 120 parts by weight of a softening agent containing 0.1 to 4% by weight of asphaltene. The rubber composition simultaneously has a high high-loss property, a high fracture property and a good workability.
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