公开(公告)号：JPH0832799B2

公开(公告)日：1996-03-29

申请号：JP1629687

申请日：1987-01-28

Applicant: BRIDGESTONE CORP

Inventor： MATSUKA AKIHIKO ,  HATANAKA TAKASHI

IPC: C08K3/04 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00 ,  C09C1/48

公开(公告)号：JPH0468339B2

公开(公告)日：1992-11-02

申请号：JP9236086

申请日：1986-04-23

Applicant: BRIDGESTONE CORP

Inventor： HATANAKA TAKASHI ,  TAKESHITA MICHITAKA

IPC: C08K3/04 ,  C08K9/00 ,  C08K9/04 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00 ,  C09C1/56

公开(公告)号：JPS62250042A

公开(公告)日：1987-10-30

申请号：JP9236086

申请日：1986-04-23

Applicant: BRIDGESTONE CORP

Inventor： HATANAKA TAKASHI ,  TAKESHITA MICHITAKA

IPC: C08K3/04 ,  C08K9/00 ,  C08K9/04 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00 ,  C09C1/56

Abstract: PURPOSE:To obtain a rubber composition having high reinforcing property and improved dispersibility without lowering the reinforcing property, by carrying out the addition surface-treatment of carbon black having large surface area with an amine compound and/or quinoline compound and compounding the treated carbon black to a rubber. CONSTITUTION:(A) 100pts.(wt.) of carbon black having a specific surface area of >=130m /g determined by nitrogen adsorption is granulated by pouring (B) an organic solvent solution or aqueous dispersion containing 0.5-5pts. of an amin compound (e.g. naphthylamine compound, diphenylamine compound, etc.) and/or a quinoline compound to the component A in a wet granulator for carbon black. The obtained granule is heated at 105-200 deg.C to remove the solvent or water to dryness. The resultant surface-treated carbon black is added to a rubber composed of a natural rubber and/or a synthetic diene rubber at an amount of 30-140pts. per 100pts. of the rubber.

公开(公告)号：JPS61285105A

公开(公告)日：1986-12-15

申请号：JP12645785

申请日：1985-06-11

Applicant: BRIDGESTONE CORP

Inventor： WATANABE TOSHIYUKI ,  YAMAGUCHI HIROSHI ,  KISHINAMI SHIGETO ,  KONISHI SATORU ,  HATANAKA TAKASHI

IPC: B60C11/00 ,  B60C11/11 ,  B60C11/117

Abstract: PURPOSE:To improve the durability and moving performance of a lug tire of a large vehicle formed with multiple lateral grooves from both shoulders toward the center of a tread by devising the shape of lateral grooves and specifying the dynamic elastic modulus or the like of the tread rubber. CONSTITUTION:A lug tire is formed with multiple lateral grooves 5 from both shoulders 3 toward the center 4 in turn and point-symmetrically across the center 4 on a tread section 2. In this case, each lateral groove 5 is formed with a straight-line region 10 located on the shoulder 3 side having a crossed axes angle theta between an edge line 6 on the opening side and the meridian L of the tire within a range of -5 deg.-5 deg. and a slant region 11 having a crossed axes angle alpha between the center line M in the width direction and the meridian L within a range of -40 deg.--20 deg. or within a range of 20 deg.-40 deg.. The tread section 2 is formed with rubber having a dynamic elastic modulus within a range of 7.8X10 -9.5X10 (kg/mm ), a loss tangent within a range of 0.18-0.23, and a value of the loss tangent divided by the dynamic elastic modulus within a range of 2.0X10 -2.5X10 (mm /kg).

公开(公告)号：JPS63186746A

公开(公告)日：1988-08-02

申请号：JP1629687

申请日：1987-01-28

Applicant: BRIDGESTONE CORP

Inventor： MATSUKA AKIHIKO ,  HATANAKA TAKASHI

IPC: C08K3/04 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00 ,  C09C1/48

Abstract: PURPOSE:To make it possible to form a highly abrasion-resistant rubber composition free from lowering in the workability due to viscosity increase, by adding an SAF carbon black of specified property requirements to a natural rubber and/or a diene synthetic rubber. CONSTITUTION:A carbon black satisfying all of the following property requirements: (i) N2SA>=145m /g (wherein N2SA: nitrogen adsorption specific surface area), (ii) N2SA/IA =0 (wherein AREA: microscopically deter mined projection area), (iv) N2SA-CTAB

公开(公告)号：JPS62290738A

公开(公告)日：1987-12-17

申请号：JP13392586

申请日：1986-06-11

Applicant: BRIDGESTONE CORP

Inventor： HATANAKA TAKASHI ,  MATSUKA AKIHIKO

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

Abstract: PURPOSE:To provide the title compsn. which has an excellent reinforcing effect and excellent wear resistance and processability, gives only reduced heat buildup and is suitable for use as a material for tired, conveyor belts, etc., by blending natural rubber and/or synthetic diene rubber with carbon black having a specified performance. CONSTITUTION:100pts.wt. natural rubber and/or synthetic diene rubber (A) are/is blended with 40-120pts.wt. carbon black (B) having such a sharp aggregate distribution and characteristics that the nitrogen adsorption surface are N2SA is 100-125m /g, dibutyl phthalate absorption is 105-130ml/100g, the ratio of the half width DELTAD50 of the particle size distribution of aggregates to the modal diameter Dst thereof is 0.7-1.0 and the ratio of the N2SA to the iodine adsorption surface are IA is 0.90-1.05.

公开(公告)号：JPS62277443A

公开(公告)日：1987-12-02

申请号：JP11904386

申请日：1986-05-26

Applicant: BRIDGESTONE CORP

Inventor： HATANAKA TAKASHI ,  MATSUKA AKIHIKO

IPC: C08L7/00 ,  C08K3/04 ,  C08L3/04 ,  C08L9/00

Abstract: PURPOSE:A composition suitable as tires or hoses, having both high reinforcing properties and high wear resistance and improved heat build-up, obtained by blending rubber such as natural rubber, etc., with specific carbon black. CONSTITUTION:(A)100pts.wt. one or more kinds of rubber selected from natural rubber and diene synthetic rubber are blended with (B) 40-120pts.wt. carbon black which has 130-160m /g specific surface area of nitrogen adsorption (N2 SA), 110-150ml/100g oil absorption amount of dibutyl phthalate (DBP), >=121 specific tinting power (TINT), 0.7-1.0 ratio of DELTAD50/Dst of half-value width (DELTAD50) of aggregate diameter distribution and most frequency value (Dst) of aggregate diameter distribution, 1.20-1.45 ratio of Dw/Dn of weight-average particle diameter (Dw) by electron microscope and arithmetical means particle diameter (Dn) and