公开(公告)号：DE68912622D1

公开(公告)日：1994-03-10

申请号：DE68912622

申请日：1989-02-13

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO ,  HATAKEYAMA KAZUYA ,  HIRATA YASUSHI

IPC: C08K3/04 ,  C08K5/45 ,  C08K5/46 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

Abstract: A low heat generation type rubber composition comprises at least one rubber selected from natural rubber and synthetic diene rubbers, a reinforcing filler, and a thiadiazole compound expressed by the following general formula: in which R1 and R2, which may be the same as or different from each other, denote a mercapto group, an amino group, or a trifluoromethyl group. The reinforcing filler and the thiadiazole compound are contained in amounts of 20 to 150 parts by weight and 0.1 to 10 parts by weight, respectively.

公开(公告)号：DE68912622T2

公开(公告)日：1994-06-23

申请号：DE68912622

申请日：1989-02-13

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO ,  HATAKEYAMA KAZUYA ,  HIRATA YASUSHI

IPC: C08K3/04 ,  C08K5/45 ,  C08K5/46 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

Abstract: A low heat generation type rubber composition comprises at least one rubber selected from natural rubber and synthetic diene rubbers, a reinforcing filler, and a thiadiazole compound expressed by the following general formula: in which R1 and R2, which may be the same as or different from each other, denote a mercapto group, an amino group, or a trifluoromethyl group. The reinforcing filler and the thiadiazole compound are contained in amounts of 20 to 150 parts by weight and 0.1 to 10 parts by weight, respectively.

公开(公告)号：ES2061971T3

公开(公告)日：1994-12-16

申请号：ES89301355

申请日：1989-02-13

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO ,  HATAKEYAMA KAZUYA ,  HIRATA YASUSHI

IPC: C08K3/04 ,  C08K5/45 ,  C08K5/46 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

Abstract: A low heat generation type rubber composition comprises at least one rubber selected from natural rubber and synthetic diene rubbers, a reinforcing filler, and a thiadiazole compound expressed by the following general formula: in which R1 and R2, which may be the same as or different from each other, denote a mercapto group, an amino group, or a trifluoromethyl group. The reinforcing filler and the thiadiazole compound are contained in amounts of 20 to 150 parts by weight and 0.1 to 10 parts by weight, respectively.

公开(公告)号：JP2001240707A

公开(公告)日：2001-09-04

申请号：JP2000052884

申请日：2000-02-29

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO

IPC: B60C1/00 ,  B60C9/20 ,  B60C11/00 ,  C08L21/00

Abstract: PROBLEM TO BE SOLVED: To provide a rubber composition which has low heat build-up properties and fracture resistance compatibilized with each other. SOLUTION: This rubber composition gives a base rubber having a tensile stress at 100% elongation M100 (100% modulus) of 2.5-3.5 Mpa, satisfies the relation represented by the relation M100(Ca)

公开(公告)号：JPH0384049A

公开(公告)日：1991-04-09

申请号：JP21856989

申请日：1989-08-28

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO ,  OHARA MASASHI ,  SATO SUSUMU

IPC: B60C1/00 ,  B60C11/00 ,  C08K3/00 ,  C08K3/04 ,  C08K3/36 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

Abstract: PURPOSE:To obtain a tread rubber composition for large-sized pneumatic tires improved in appearance on bad roads and abrasion resistance by blending natural rubber and/or isoprene rubber with specific carbon black and silica. CONSTITUTION:A tread rubber composition for large-sized pneumatic tires, obtained by blending (A) 100 pts.wt. natural rubber and/or isoprene rubber with (B) 40-50 pts.wt. carbon black having 150-175m /g nitrogen adsorption specific surface area (N2SA) and 105-130ml/100g dibutyl phthalate oil absorption (DBP oil absorption) and (C) 5-15 pts.wt. silica, preferably silica prepared by a wet process and having 60-65 hardness and 450-600% maximum elongation after vulcanization in tensile tests.

公开(公告)号：JPH07102115A

公开(公告)日：1995-04-18

申请号：JP25300693

申请日：1993-10-08

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO

IPC: B60C1/00 ,  B60C5/00 ,  C08K3/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/00 ,  C08K5/09 ,  C08K5/54 ,  C08K5/548 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

Abstract: PURPOSE:To obtain a composition, good in operating efficiency and having both low heat buildup and fracture resistance and capable of providing a belt coating rubber by blending a rubber component containing natural rubber, etc., with specific silica, carbon black and a silane coupling agent. CONSTITUTION:This rubber composition is obtained by blending 100 pts.wt. rubber component containing natural rubber or polyisoprene rubber with 30-70 pts.wt. total amount of silica and carbon black in which the amount of the silica is 10-50wt.%. based on the total amount and a silane coupling agent in an amount of 10-30wt.% based on the silica. The carbon black has 80-160m /g specific surface area (N2SA value) measured by the nitrogen adsorption method and 70-100ml/100g dibutyl phthalate oil absorption volume (DBP value). An organic unsaturated fatty acid containing >=10wt.% conjugated dienoic acid containing at least one set of two double bonds between carbon atoms in a conjugated relationship in the molecule and >=2 double bonds between carbon atoms in the molecule in an amount of 0.5 pts.wt. may be blended therewith. A belt coating rubber has g 40 fracture index and >=63% resilience at 25'C and provides a large-sized pneumatic radial tire for construction.

公开(公告)号：JPH01207337A

公开(公告)日：1989-08-21

申请号：JP3186888

申请日：1988-02-16

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO ,  HATAYAMA KAZUYA ,  HIRATA YASUSHI

IPC: C08K3/04 ,  C08K5/45 ,  C08K5/46 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

Abstract: PURPOSE:To obtain the title composition for tyre, etc., exhibiting heat release improving effect without peptizing a polymer, by blending a natural rubber and diene-based synthetic rubber with a reinforcing filler and specific thiadiazole compound each at specific ratio. CONSTITUTION:The aimed composition obtained by blending (A) 100 pts.wt. natural rubber and/or diene-based synthetic rubber with (B) 20-150 pts.wt. reinforcing filler (e.g., carbon black) and (C) 0.1-10 pts.wt., preferably 0.25-2 pts.wt. thiadiazole (e.g., 2,5-dimercapto-1,3,4-thiadiazole or 2-amino-5- mercapto-1,3,4-thiadiazole) expressed by the formula (R1 and R2 are mercapto, amino or trifluoromethyl).

公开(公告)号：JP2007031489A

公开(公告)日：2007-02-08

申请号：JP2005213119

申请日：2005-07-22

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： NAKAJIMA ICHIRO

IPC: C08L21/00 ,  B60C1/00 ,  B60C9/20

Abstract: PROBLEM TO BE SOLVED: To provide a low heat buildup rubber composition by optimizing a relation between the modulus of elasticity of a breaker coating rubber and the modulus of elasticity of a carcass ply coating rubber, and to provide a large-sized pneumatic bias tire using the same and excellent in weather resistance.
SOLUTION: The invention relates to the rubber composition for breaker coating (A) and for carcass ply coating (B) of the large-sized pneumatic bias tire satisfying following terms, (a) the coating rubber (A) manifests ≥2.5 MPa of tensile stress at 100% of elongation (100% Mod) and ≥500% of fracture elongation, (b) the coating rubber (B) manifests ≥2.5 MPa of tensile stress at 100% of elongation (100% Mod) and ≥350% of fracture elongation, and (c) the ratio R of tensile stress at 100% elongation of the coating rubber (B) to that of the coating rubber (A) [100% Mod(B)/100% Mod(A)] is 1.0≤R≤1.6.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了通过优化破碎涂层橡胶的弹性模量与胎体帘布层橡胶的弹性模量之间的关系来提供低发热橡胶组合物，并且提供大尺寸气动 使用相同的轮胎和耐候性优异。 解决方案：本发明涉及满足以下条件的大型气动偏压轮胎的破碎机涂层（A）和胎体帘布层（B）的橡胶组合物，（a）涂层橡胶（A）显示≥2.5 伸长100％时的拉伸应力MPa（100％Mod）和断裂伸长率≥500％，（b）涂布橡胶（B）在100％伸长率（100％Mod）下≥25MPa拉伸应力≥≥5MPa 350％的断裂伸长率，（c）涂布橡胶（B）的100％伸长率与涂布橡胶（A）的拉伸应力的比率R为100％Mod（B）/ 100％Mod（A） ]为1.0≤R≤1.6。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JPH05117450A

公开(公告)日：1993-05-14

申请号：JP30821091

申请日：1991-10-29

Applicant: BRIDGESTONE CORP

Inventor： NAKAJIMA ICHIRO ,  OHARA MASASHI

IPC: B60C1/00 ,  C08K3/04 ,  C08L7/00 ,  C08L9/00 ,  C08L9/06 ,  C08L21/00

Abstract: PURPOSE:To remarkably improve the resistance to damage, such as cutting or chipping, during running on a bad road while retaining a high abrasion resistance and a low heat buildup. CONSTITUTION:100 pts.wt. rubber component comprising 30-60 pts.wt. SBR having a combined styrene content of 25-50wt.% and a vinyl group content in butadiene parts of 15-35wt.% and prepd. by the soln. polymn. in the presence of an organolithium compd. as a polymn. initiator, 40-70 pts.wt. natural or polyisoprene rubber, and 0-30 pts.wt. polybutadiene rubber is compounded with 40-65 pts.wt. carbon black having an N2SA of 150-200m /g and a DBP adsorption of 90-130ml/100g to give the title compsn., which gives a vulcanizate having an elongation at break of 500% or higher, a spring hardness of 60 or higher, and an impact resilience of 40 or higher.

公开(公告)号：JPH0551492A

公开(公告)日：1993-03-02

申请号：JP23700991

申请日：1991-08-23

Applicant: BRIDGESTONE CORP

Inventor： OHARA MASASHI ,  NAKAJIMA ICHIRO

IPC: B60C1/00 ,  B60C11/01 ,  C08K3/00 ,  C08K3/04 ,  C08L9/06 ,  C08L21/00

Abstract: PURPOSE:To provide a heavy-duty pneumatic tire having excellent abrasion resistance and partial abrasion resistance. CONSTITUTION:The composition for the objective tire is produced by compounding (A) 100 pts.wt. of a rubber component consisting of (A1) 80-30 pts.wt. of natural rubber, polyisoprene rubber and/or polybutadiene rubber and (A2) 20-70 pts.wt. of an emulsion-polymerized styrene-butadiene copolymer rubber having an average styrene content of 15-50wt.% and a distribution width of the bonded styrene composition of >=20% with (B) 40-70 pts.wt. of carbon black having a specific surface area of 130-158m /g (determined by cetyltrimethylammonium bromide adsorption), dibutyl phthalate absorption of 110-140ml/100g, coloring power of >=137, an agglomerate void volume of 105-140cc/100g and average diameter of agglomerate void of 200-250Angstrom .