公开(公告)号：WO9319578A3

公开(公告)日：1993-11-25

申请号：PCT/JP9300971

申请日：1993-07-14

Applicant: BRIDGESTONE CORP

Inventor： NAKANE SHINSUKE ,  KANOU KAZUHIKO ,  HASHIMOTO TAKATSUGU

IPC: B60C1/00 ,  C08K3/04 ,  C08K5/09 ,  C08L7/00 ,  C08L9/00

CPC classification number: C08K3/04 ,  B60C1/0016 ,  C08K5/09 ,  C08L21/00

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 90-220 m2/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.

公开(公告)号：WO0238667A3

公开(公告)日：2003-03-20

申请号：PCT/JP0109552

申请日：2001-10-31

Applicant: BRIDGESTONE CORP ,  TORATANI HIROTOSHI ,  IWAFUNE SEIICHIRO ,  KIJIMA KEN ,  MAEDA HIROMI ,  HASHIMOTO TAKATSUGU ,  YANAGISAMA KAZUHIRO

Inventor： TORATANI HIROTOSHI ,  IWAFUNE SEIICHIRO ,  KIJIMA KEN ,  MAEDA HIROMI ,  HASHIMOTO TAKATSUGU ,  YANAGISAMA KAZUHIRO

IPC: C08K3/00 ,  B29B13/06 ,  C08C1/075 ,  C08C1/12 ,  C08K3/22 ,  C08K5/10 ,  C08K5/12 ,  C08K5/25 ,  C08L7/00 ,  C08L7/02 ,  C08J3/00

CPC classification number: B29B13/06 ,  B29K2007/00 ,  B29K2105/0064 ,  B29K2105/16 ,  C08C1/12 ,  C08K3/22 ,  C08K5/10 ,  C08K5/25 ,  C08L7/02 ,  C08L7/00

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 rubber-filler 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.

Abstract translation: 提供通过干燥聚集的天然橡胶胶乳而不凝结而获得的天然橡胶，其中使用滚筒式干燥机和/或输送式干燥机进行干燥。 此外，提供了通过向天然橡胶胶乳中加入至少一种炭黑和无机填料制备的天然橡胶填料混合物的制备方法，天然橡胶中加入了包含酰肼化合物或芳族或脂族多元羧酸酯的粘度稳定剂 这些天然橡胶和天然橡胶填料混合物的衍生物，以及使用上述天然橡胶制备并且生产率，耐磨性和耐断裂性优异的橡胶组合物。

公开(公告)号：WO9735462A3

公开(公告)日：1997-11-20

申请号：PCT/JP9702244

申请日：1997-06-27

Applicant: BRIDGESTONE CORP ,  HASHIMOTO TAKATSUGU

Inventor： HASHIMOTO TAKATSUGU

IPC: C07C7/10 ,  C08K5/01 ,  C08L21/00 ,  C10G1/00

CPC classification number: C08K5/01 ,  C08L21/00

Abstract: A high-aromatic oil which has a glass transition point of -45 to -20 °C, an aromatics content of 55 to 90 % by weight as measured by the clay gel method, and a polycyclic aromatic compound content of less than 3 % by weight, based on the whole hydrocarbon component contained in the oil component, as measured by the IP346 method. This oil is suitable for use in preparing various rubber compositions for tires, rubber vibration isolators, antiglare materials and the like, oil extended synthetic rubbers, and printing inks, inks for writing utensils, and the like.

公开(公告)号：EP0661343A4

公开(公告)日：1995-12-06

申请号：EP93916158

申请日：1993-07-14

Applicant: BRIDGESTONE CORP

Inventor： NAKANE SHINSUKE ,  KANOU KAZUHIKO ,  HASHIMOTO TAKATSUGU

IPC: B60C1/00 ,  C08K3/04 ,  C08K5/09 ,  C08L7/00 ,  C08L9/00

CPC classification number: C08K3/04 ,  B60C1/0016 ,  C08K5/09 ,  C08L21/00

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 90-220 m2/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.

公开(公告)号：EP0940462A4

公开(公告)日：2005-03-02

申请号：EP97928506

申请日：1997-06-27

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU

IPC: C07C7/10 ,  C08K5/01 ,  C08L21/00 ,  C10G1/00

CPC classification number: C08K5/01 ,  C08L21/00

Abstract: A high-aromatic oil which has a glass transition point of -45 to -20 °C, an aromatics content of 55 to 90 % by weight as measured by the clay gel method, and a polycyclic aromatic compound content of less than 3 % by weight, based on the whole hydrocarbon component contained in the oil component, as measured by the IP346 method. This oil is suitable for use in preparing various rubber compositions for tires, rubber vibration isolators, antiglare materials and the like, oil extended synthetic rubbers, and printing inks, inks for writing utensils, and the like.

公开(公告)号：CA2040504C

公开(公告)日：1998-09-22

申请号：CA2040504

申请日：1991-04-15

Applicant: BRIDGESTONE FIRESTONE INC ,  BRIDGESTONE CORP

Inventor： OBERSTER ARTHUR E ,  HASHIMOTO TAKATSUGU

IPC: C07C51/41 ,  C07C57/03 ,  C07C57/04 ,  C07F1/08 ,  C07F3/06 ,  C07F15/02 ,  C08K5/04 ,  C08K5/09 ,  C08K5/098 ,  C08L21/00 ,  C08L7/00

Abstract: A reinforcing agent for vulcanizable rubber compounds comprises an anhydrous metal salt of an .alpha.,.beta.-ethylenically unsaturated carboxylic a cid having a crystalline structure consisting essentially of plates and fibers. Vulcanizable rubber compounds containing such reinforcing agents have improved physical properties over rubber compounds containing conventional metal carboxylic acid salts. Methods for the preparation of such anhydrous metal salts and methods for the reinforcement of vulcanizable rubber compounds therewith are also provided.

公开(公告)号：DE69128862T2

公开(公告)日：1998-05-28

申请号：DE69128862

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

IPC: B60C1/00 ,  C08F4/46 ,  C08F236/10 ,  C08K3/04 ,  C08L9/06 ,  C08L21/00 ,  C08L91/00

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.

公开(公告)号：DE69212435T2

公开(公告)日：1996-12-19

申请号：DE69212435

申请日：1992-11-16

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  AKUTAGAWA KEIZO ,  YAGAWA KAZUO ,  TANAKA MAKOTO ,  YAMAGISHI JUNICHI ,  HACHIYA KAZUO

IPC: B60C1/00 ,  B60C11/00

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.

公开(公告)号：ES2071896T3

公开(公告)日：1995-07-01

申请号：ES91120773

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

公开(公告)号：CA2082129A1

公开(公告)日：1993-05-08

申请号：CA2082129

申请日：1992-11-04

Applicant: BRIDGESTONE CORP

Inventor： YAGAWA KAZUO ,  HASHIMOTO TAKATSUGU ,  YAMAGISHI JUNICHI ,  HACHIYA KAZUO ,  TAKEZAWA SATOSHI

IPC: C08K3/02 ,  C08L21/00 ,  C08L35/04

Abstract: FLAME-RETARDANT RUBBER COMPOSITIONS A flame-retardant rubber composition has an oxygen index of 19.8-27.5 and comprises not more than 24% by weight of red phosphorus as a flame retardant based on the rubber composition and a nitrile groupcontaining elastomer as a flame-retardant polymer component as a part of rubber ingredients constituting the rubber composition. Such flame-retardant rubber compositions are very useful in applications such as industrial goods, tire and the like strongly requiring the fire preventing function.