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公开(公告)号：JPS63182355A
公开(公告)日：1988-07-27
申请号：JP1485887
申请日：1987-01-23
Applicant: BRIDGESTONE CORP
Inventor： ITO MICHIO , SUGAWARA TOSHIO , OKAMURA NOBUYUKI
Abstract: PURPOSE:To provide the title compsn. which has excellent stability against scorching and resistance to reversion during processing and vulcanization and exhibits excellent thermal aging resistance, high-temperature physical properties and high-speed durability after vulcanization, by blending a rubbery polymer with a specified bismaleimide compd., a triazine compd. and sulfure. CONSTITUTION:100pts.wt. rubbery polymer (A) composed of natural and/or synthetic diene rubber is blended with 0.2-5pts.wt. bismaleimide compd. (B) of formula I [wherein R is phenylene or a group of formula II (wherein n is 2-8)], 0.1-3.0pts.wt. triazine compd. (C) of formula III [wherein R1 is NR'2 (wherein R' is a 2-4C alkyl) or NHR''2 (wherein R'' is R' or phenyl): R2 is SH or a group of formula IV or V; R3 is H or a group of formula VI or VII] and 0.5-5.0pts.wt. sulfur (D).
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公开(公告)号：JPS62146936A
公开(公告)日：1987-06-30
申请号：JP28546685
申请日：1985-12-20
Applicant: BRIDGESTONE CORP
Inventor： HIRATA YASUSHI , KONDO HITOSHI , ITO MICHIO
Abstract: PURPOSE:To obtain a rubber composition for bonding steel cord excellent in capability of bonding and age resistance, by mixing natural rubber or synthetic polyisoprene rubber with cobalt resinate and a specified cobalt compound. CONSTITUTION:A rubber composition formed by mixing 100pts.wt. rubber containing at least 70pts.wt. at least either natural rubber or synthetic polyisoprene rubber with cobalt resinate and at least one cobalt compound selected from cobalt acetylacetonate and a boron-cobalt compound of the formula in an amount of 0.05-0.7pt.wt. in terms of cobalt. In the formula, R1, R2 and R3 are each a resin acid residue, a naphthenic acid group or a 3-24C aliphatic monocarboxylic acid group. The ratio of the amount of the cobalt resinate used to that of the cobalt compound used is preferably 9/1-1/9 in terms of a cobalt content.
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公开(公告)号：JPS627739A
公开(公告)日：1987-01-14
申请号：JP14444585
申请日：1985-07-03
Applicant: BRIDGESTONE CORP
Inventor： SAITO TADASHI , ITO MICHIO , MASUNAGA MIKIO
Abstract: PURPOSE:To obtain the titled composite of firm bonding between rubber and steel wire, with outstanding creep characteristics, by covering steel cord with a rubber composition prepared by incorporating a feedstock rubber with both straight chain alkylene maleimide and abietic acid metal salt. CONSTITUTION:The objective composite can be obtained by covering steel cord with a rubber composition prepared by incorporating (A) 100pts.wt. at least one kind of feedstock rubber selected from natural rubber, synthetic polyisoprene rubber, styrene-butadiene copolymer rubber and polybutadiene rubber with (B) 0.1-10 (pref. 0.3-3) pts.wt. of a straight chain alkylene maleimide of formula (n is pref. 1-6), (C) 0.5-10 (pref. 2-4) pts.wt. of an abietic acid metal salt (pref. cobalt abietate) and (D) other ingredients such as sulfur (as curing agent), zinc oxide and curing accelerator.
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公开(公告)号：JP2009269787A
公开(公告)日：2009-11-19
申请号：JP2008121446
申请日：2008-05-07
Applicant: Bridgestone Corp , 株式会社ブリヂストン
Inventor： ITO MICHIO
IPC: C01B31/36
Abstract: PROBLEM TO BE SOLVED: To enhance quality while suppressing decrease of productivity when silicon carbide powder is produced by drying a silicon carbide precursor by vacuum drying.
SOLUTION: In a method for producing silicon carbide powder including a step S1 of forming a silicon carbide precursor by crosslinking or polymerizing a raw material mixture comprising a silicon-containing raw material and a carbon-containing raw material, in which at least one of the silicon-containing raw material and the carbon-containing raw material is liquid and the silicon-containing raw material and the carbon-containing raw material are mixed, a step S2 of drying the silicon carbide precursor, and a step S3 of firing the silicon carbide precursor dried by the step S2 in an atmosphere of an inert gas, at the step S2, a degree of vacuum of a location space where the silicon carbide precursor is located is lowered as drying time of the silicon carbide precursor passes.
COPYRIGHT: (C)2010,JPO&INPITAbstract translation: 要解决的问题：为了提高质量，同时通过真空干燥干燥碳化硅前体来制造碳化硅粉末时的生产率降低。 解决方案：在一种生产碳化硅粉末的方法中，包括通过交联或聚合包含含硅原料的原料混合物和含碳原料形成碳化硅前体的步骤S1，其中至少 含硅原料和含碳原料中的一种是液体，并且含硅原料和含碳原料混合，干燥碳化硅前体的步骤S2和烧成步骤S3 在惰性气体气氛下，通过步骤S2干燥的碳化硅前体在步骤S2中，碳化硅前驱体的干燥时间经过时，碳化硅前体所在的位置空间的真空度降低。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2000053409A
公开(公告)日：2000-02-22
申请号：JP22307498
申请日：1998-08-06
Applicant: BRIDGESTONE CORP
Inventor： ITO MICHIO , WADA HIROAKI
IPC: C04B35/626 , B01J19/00 , C01B31/36 , C04B35/64 , G05D5/04
Abstract: PROBLEM TO BE SOLVED: To provide a producing method of a particulate compd. by which the particulate compd. having a uniform particle size can be obtd. by the reaction of two or more kinds of compds. and the particle size can be easily controlled. SOLUTION: Two kinds of compds. which react with each other by heating while producing a gas, for example, a silicon-contg. compd. and a carbon-contg. compd. are reacted by calcining them in an inert atmosphere to produce the particulate objective compd., preferably silicon carbide. In this process, the amt. of the gas produced during calcination is detected and the calcination temp. is raised or decreased according to the detected amt. to control the particle size of the particles of the objective compd. Preferably, the average particle size of particulate silicon carbide obtd. by the reaction of the silicon-contg. compd. and the carbon-contg. compd. ranges from 0.1 μm to 10 μm, and the ratio (D90O/D10) of the diameter at 90% accumulation (D90) to the diameter at 10% accumulation (D10) calculated from the grain size distribution is
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Patent Agency Ranking
公开(公告)号：JPH0732374A
公开(公告)日：1995-02-03
申请号：JP17706693
申请日：1993-07-16
Applicant: BRIDGESTONE CORP
Inventor： ITO MICHIO , IWATA TOSHIRO , KONO HIROSHI , HIRUKAWA TETSUYA
IPC: B29C35/02 , B29C35/16 , B29K21/00 , B29K105/24 , B29L30/00
Abstract: PURPOSE:To set at least either one vulcanization degree of a fastest part and a slowest part of a material to be vulcanized to a vulcanization degree of a predetermined range by controlling a post-vulcanization degree of the material to be vulcanized such as a tire to a predetermined vulcanization degree. CONSTITUTION:Vulcanizing conditions of a post-vulcanization are decided in response to those of vulcanization until post-vulcanization is conducted. A vulcanization controller controls a vulcanizing machine based on the vulcanizing conditions of the vulcanization to conduct the vulcanization. A tire 50 vulcanized to a predetermined vulcanization degree by the vulcanization is contained in a box 40 of a vulcanization controller 10b. A temperature controller 64 calculates the post-vulcanization based on the vulcanization degree input from the controller at the time of finishing the vulcanization and a target vulcanization degree, and estimates a temperature of a fastest part. The controller 64 so control a cooler/heater 56 that the vulcanization degree from start to end of the vulcanization of the fastest part becomes the target degree based on the post-vulcanization degree and the estimated temperature of the fastest part. This control is repeated at each predetermined time up to a cycle time.
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公开(公告)号：JPH0468337B2
公开(公告)日：1992-11-02
申请号：JP27583287
申请日：1987-11-02
Applicant: BRIDGESTONE CORP
Inventor： YAMAMOTO HISAO , ITO MICHIO , WATANABE YOICHI , ISEDA YUTAKA
IPC: C08K5/34 , C08K5/00 , C08K5/04 , C08K5/07 , C08K5/3415 , C08K5/3417 , C08K5/56 , C08L7/00 , C08L9/00 , C08L21/00
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公开(公告)号：JPH02227304A
公开(公告)日：1990-09-10
申请号：JP4924589
申请日：1989-02-28
Applicant: BRIDGESTONE CORP
Inventor： WATANABE YOICHI , ITO MICHIO
Abstract: PURPOSE:To improve water resistance, prevention against drop in adhesive property and improve the anticorrosion fatigue property of a steel cord by constituting an inner liner with an inner layer containing a specified amount of a water absorptive polymer and an outer layer consisting of halogenated butyl rubber. CONSTITUTION:An inner liner 5 is formed into a two-layer structure consisting of an inner layer 5B stuck close to a carcass layer 3 and an outer layer 5A contacting with air in a tire at the outside of this inner layer 5B. This outer layer 5A is formed with halogenated butyl rubber, and the inner layer 5B is formed with rubber containing a water absorptive polymer, for example, an acrylic acid-vinyl alcohol copolymer as much as 2 - 30 weight parts to rubber 100 weight parts. With this constitution, water resistance is improved, and the anticorrosion fatigue property of a steel cord and anticorrosion destructivity are also improved and drop in adhesive property can be prevented.
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公开(公告)号：JPH0267342A
公开(公告)日：1990-03-07
申请号：JP21856788
申请日：1988-09-02
Applicant: BRIDGESTONE CORP
Inventor： OKAMURA NOBUYUKI , ITO MICHIO
Abstract: PURPOSE:To obtain high elastic modulus, fracture strength and heat resistance at high temp. by compounding a rubbery polymer with a bismaleimide compd., 4,4'-dithiobismorpholine and sulfur each of a specified wt. CONSTITUTION:100pts.wt. at least one rubbery polymer selected from the group consisting of natural rubbers and diene synthetic rubbers, such as polyisoprene rubbers, polybutadiene rubbers and styrene-butadiene copolymer rubbers, is compounded with 0.2-5.0pts.wt. bismaleimide of the formula (wherein R is a 2-18C divalent org. group and may contain optionally at least one atom among O, N, S and halogen atoms), 0.1-10.0pts.wt. 4,4'-dithiobismorpholine and 0.2-5.0pts. wt. sulfur.
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公开(公告)号：JPH0121177B2
公开(公告)日：1989-04-20
申请号：JP10384882
申请日：1982-06-18
Applicant: BRIDGESTONE CORP
Inventor： ITO MICHIO , KAWAGUCHI YASUMI , WATANABE SHUICHI
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