公开(公告)号：JPH04252241A

公开(公告)日：1992-09-08

申请号：JP26882891

申请日：1991-09-20

Applicant: BRIDGESTONE CORP

Inventor： JIYANGU DABURIYUU KANGU ,  GEIRII BII SHIIBAA ,  HASHIMOTO TAKATSUGU

IPC: C08F4/00 ,  C08F4/42 ,  C08F4/46 ,  C08F4/48 ,  C08F236/10 ,  C08L9/06 ,  C08L21/00

Abstract: PURPOSE:To provide the composition of an ultrahigh molecular weight copolymer of a conjugated diene with an aromatic vinyl compound, the copolymer having a weight-average molecular weight of approximately >=1000000. CONSTITUTION:The composition of an ultrahigh molecular weight copolymer characterized by its having an intrinsic viscosity of at least approximately 4.0 in tetrahydrofuran is produced by a method which comprises copolymerizing a 1,3-conjugated diene with a vinylic aromatic compound in a hydrocarbon solvent in the presence of a trimetallized 1-alkine catalyst comprising the reaction product of a >=4C 1-alkine, an organometallic compound R M and a 1,3-conjugated diene wherein R is hydrocarbyl group; M is alkali metal; the molar ratio of the R M to the 1-alkine is approximately 3:1; and the molar ratio of the conjugated diene to the 1-alkine is approximately 2:1 to approximately 30:1.

公开(公告)号：JPH0414130B2

公开(公告)日：1992-03-11

申请号：JP7123183

申请日：1983-04-22

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  SUZUKI AKIRA ,  KATAOKA NOBUYUKI ,  SAITO TASUKU ,  OOHASHI TAKASHI

IPC: C08J9/06 ,  C08J9/04

公开(公告)号：JPH02153266A

公开(公告)日：1990-06-12

申请号：JP30812088

申请日：1988-12-06

Applicant: BRIDGESTONE CORP

Inventor： FUKUDA TAISUKE ,  HASHIMOTO TAKATSUGU

IPC: F03G7/00

Abstract: PURPOSE:To enable the generation of a high output through a device is small by a method wherein a reversible resilient mechanochemical actuator to fetch mechanical energy by means of a chemical external stimulus, e.g., pH or salt concentration conversion, serving as an output medium is incorporated. CONSTITUTION:A mechanochemical actuator device 10 is formed with a body 11 having double tube structure and a moving table 13 having a spring 12A being the working point of mechanical energy from the inside. An electrode 14A is mounted to the inner cylindrical part of the body 11 and is filled with an electrolytic solution 15A to form a first electrode chamber 16A. A mechanochemical actuator 17 is contained in the electrode chamber 16A in a state that the one end is coupled to the moving table 13 and the other end to a bottom 11a. Meanwhile, an electrode 14B is mounted to the annular part on the outer periphery side of the body 11 and filled with an electrolytic solution 15B to form a second electrode chamber 16B. The two electrode chambers 16A and 16B are partitioned from each other by means of a porous film 18 mounted to the lower part of the first electrode chamber 16A.

公开(公告)号：JPH01306446A

公开(公告)日：1989-12-11

申请号：JP13714988

申请日：1988-06-03

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  TOMITA SEISUKE

IPC: C08L21/00 ,  A63B53/14 ,  A63B60/08 ,  A63B102/02 ,  A63B102/32 ,  C08L89/00 ,  C08L89/06

Abstract: PURPOSE:To obtain the title product as grips of golf clubs, etc., having good touch, excellent appearance, slightly slipping even in getting wet, containing a specific amount of leather powder having specific particle size. CONSTITUTION:The aimed rubber product containing 5-65wt.%, preferably 20-50wt.% leather powder having 40-300 meshes, preferably 70-220 meshes. The rubber product is obtained by a rubber component (preferably one having glass transition temperature of

公开(公告)号：JPS6485239A

公开(公告)日：1989-03-30

申请号：JP23998087

申请日：1987-09-26

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  KOJIMA TAKAHIKO ,  TOMITA SEISUKE

IPC: C08K5/54 ,  C08K5/00 ,  C08L21/00

Abstract: PURPOSE:To provide a rubber composition which gives a vulcanizate excellent in tensile strength, modulus, Shore hardness, etc. and is suitable for a tire etc., by adding two specified organosilicon compounds to a base comprising a carbon- carbon double bond-containing polymer. CONSTITUTION:A main component comprising a carbon-carbon double bond- containing polymer (A) (e.g., natural rubber) is compounded with an organosilicon compound (B) of formula I (wherein X is a hydrolyzable group, R is a linear or branched alkyl, a cycloalkyl, an aralkyl, a phenyl which may be substituted, or the like group, Z is a functional group reactive with a carbon- carbon double bond, m>=1 and 0

公开(公告)号：JPS63125541A

公开(公告)日：1988-05-28

申请号：JP27173286

申请日：1986-11-17

Applicant: BRIDGESTONE CORP ,  TOSHIBA SILICONE ,  JAPAN SYNTHETIC RUBBER CO LTD

Inventor： HASHIMOTO TAKATSUGU ,  KOJIMA TAKAHIKO ,  TOMITA SEISUKE ,  WATANABE JUNICHIRO ,  FUNAHASHI YUICHI ,  UMEDA ITSUKI ,  TAKASHIMA MASAAKI ,  ZAMA YOSHIAKI

IPC: C08K3/04 ,  C08L15/00 ,  C08L21/00 ,  C08L83/04

Abstract: PURPOSE:To obtain a flexible article excellent in heat, weathering and ozone resistances, by molding a composition based on a rubber composition containing a specified crosslinked rubber mixture and carbon black. CONSTITUTION:A flexible article based on a rubber composition comprising a crosslinked rubber containing rubber and carbon black, wherein said rubber component is based on a rubber composition comprising 5-95wt% organic rubber (A), 0-90wt% polyorganosiloxane (B) and 5-95wt% silicone-modified organic rubber (C) formed by modifying an organic rubber with a silicone compound containing Si-H groups in the molecule. The flexible articles are, for example, flexible rubber articles such as rubber hoses, rubber joints, vibration- proof rubbers, transmission belts and O-rings. The organic rubber used in component (C) is preferably the same organic rubber as component A or one having similar main chain structure.

公开(公告)号：JPS62271710A

公开(公告)日：1987-11-26

申请号：JP11685386

申请日：1986-05-21

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  TOMITA SEISUKE

IPC: C23F11/00 ,  B29C33/38 ,  B29C33/56 ,  B29C33/64 ,  B29K21/00 ,  B29L30/00

Abstract: PURPOSE:To improve mold release ability of a rubber or plastic molded product as contamination of a mold is prevented as much as possible and the number of washing times of the mold can be reduced drastically, by performing molding by making use of the mold surface-treated with a surface treatment agent containing a denatured silicone compound having specific chemical structure. CONSTITUTION:A mold at least a part of the inner surface of which is surface- treated with a surface treatment agent containing a denatured silicone compound shown by an expression (1) is used as the mold, in a method of manufacturing a rubber or plastic molded product by supplying a rubber or plastic molding material into the mold. Provided that, l and (m) in the expression are integral numbers satisfying l+m>=10, l/(l+m)>=0.03. When the mold is surface-treated by making use of the surface treatment agent containing the denatured silicone compound having specific chemical structure of the expression (1) as the surface treatment agent, a surface treatment film is formed firmly on the surface of the mold. The surface of the mold surface-treated like this is inert and a washing term of the mold can be extended remarkably by preventing the contamination effectively.

公开(公告)号：JPS62115020A

公开(公告)日：1987-05-26

申请号：JP25645085

申请日：1985-11-14

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  TOMITA SEISUKE

IPC: C08G18/00 ,  C08G18/77

Abstract: PURPOSE:To obtain polyurethane excellent in water repellency, mold release and heat resistance and extremely low in water absorption, by reacting a polyol component with a specified isocyanate component. CONSTITUTION:An isocyanate component is obtained by mixing 0.1-100pts.wt. isocyanate compound having silicon in the molecule, such as a compound of formula I or II [wherein n is 1-4, m is 1-3, R is an (un)saturated aliphatic or aromatic hydrocarbon group unsubstituted or substituted with methyl, ethyl, vinyl or phenyl and A is a bivalent hydrocarbon group such as alkylene, O, S or the like] with, optionally, 100pts.wt. monoisocyanate compound such as ethyl isocyanate or polyisocyanate such as tolylene diisocyanate. This component is reacted with a polyol having at least two alcoholic hydroxyl groups in the molecule (e.g., polyester polyol) in the presence of, optionally, a chain extender, crosslinking agent and 0.01-5wt% (based on polyol) catalyst.

公开(公告)号：JPS62113518A

公开(公告)日：1987-05-25

申请号：JP25644985

申请日：1985-11-14

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  KOJIMA TAKAHIKO ,  TOMITA SEISUKE

IPC: B29C33/56 ,  B29C33/64

Abstract: PURPOSE:To prevent the contamination of a mold, which is generated especially by pressurizing and heating upon molding, by a method wherein the mold, whose surface is treated by a surface treating agent consisting of a compound including the atom of silicon and isocyanate group in the molecule thereof or a composition blended with said compound, is employed. CONSTITUTION:The cause of contamination of a mold is the combination of metal oxide or metal hydroxide, existing on the surface of the mold, and a chemically active functional group, such as vinyl group, alcohol or phenol hydroxide group, amino group, nitro group or the like, for example. Accordingly, the surface of the mold is treated by surface treating agent consisting of a substance which interrupts the combination of said functional group or a compound including both of the atom of silicon and isocyanate group in the molecule thereof or a composition blended with said compound. According to this method, contamination upon molding the molded product of rubber or plastic may be reduced remarkably and the molded products may be molded efficiently.

公开(公告)号：JPS61100416A

公开(公告)日：1986-05-19

申请号：JP22180584

申请日：1984-10-22

Applicant: Bridgestone Corp

Inventor： TOMITA SEISUKE ,  HASHIMOTO TAKATSUGU

IPC: C08L7/00 ,  B29C33/04 ,  B29C33/40 ,  B29C33/64 ,  B29C35/04 ,  B29D30/00 ,  B29K21/00 ,  B29K83/00 ,  B29K105/24 ,  B29L30/00 ,  C08J7/04 ,  C08L1/00 ,  C08L21/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L101/00

CPC classification number: B29L2030/00

Abstract: PURPOSE:To contrive an improvement in physical properties such as strength of a machine and mold release characteristics, by forming a vulcanizing bladder with a rubber composite containing organic rubber and polyorgano siloxane. CONSTITUTION:Co-crosslinking of organic rubber based on various kinds of vulcanizer and polyorgano siloxane become possible by a method wherein as for polyorgano siloxane, at least two pieces of organic groups out of the whole number of the organic groups to be selected from a monovalent replacement and nonreplacement hydrocarbon radicals which are bonded with a silicon atom possess more than four pieces of carbon atoms, contains monovalent hydrocatbon radicals having C=C double bond through at least one piece of a carbon atom from a silicon atom and contains the double-bond hydrocarbon radical like this in a molecule consisting of 5-100wt% polyorgano siloxane whose polymerization degree is more than 20 and 90-0wt% polyorgano siloxane whose polymerization degree is more than 20 and containing the other crosslinking radical. A compound ratio between the organic rubber and polyorgano silxane is made into 95/5-5/95. Based on the above, the title product is superior in mold release properties and plysical properties such as mechanical strength.

Abstract translation: 目的：通过用含有机橡胶和聚有机硅氧烷的橡胶复合物形成硫化气囊，来改善物理性能如机械强度和脱模特性。 构成：可以通过以下方法使基于各种硫化剂和聚有机硅氧烷的有机橡胶的共交联：其中对于聚有机硅氧烷，选自全部数目的有机基团中的至少两个有机基团可以选自单价 与硅原子键合的取代基和非位置烃基具有多于四个碳原子，含有通过来自硅原子的至少一个碳原子具有C = C双键的单价氢化
碳原子，并含有双键 在由聚合度大于20的5-100重量％聚有机硅氧烷和聚合度大于20并含有其它交联基团的聚有机硅氧烷90重量％的分子组成的烃基。 有机橡胶与聚有机硅氧烷的配合比为95 / 5-5 / 95。 基于上述，标题产品在脱模性能和机械强度等特性方面优异。