The Yokohama Rubber Co., Ltd.

Masamichi Danjo

Yoshiaki Hashimura

Eiji Nishi

Hirohisa Hazama

Norifumi Kameda

Hirokazu Shibata

Naoyuki Morooka

Hideyuki Matsuda

Yoshinobu Ohashi

Koichi Kano

Tetsuji Kitamura

Hitoshi Saito

Etuo Okada

Takayuki Kabasawa

Provided is a method of manufacturing a pneumatic tire which enables an inner liner layer made of a thermoplastic resin or a thermoplastic elastomer composition to be formed without decreasing the productivity and deterioration the working environment. Powderof a thermoplastic resin or a thermoplastic elastomer composition having an average particle diameter of not more than 1 mm is sprayed and adhered onto the inner surface of an uncured tire or a cured tire. Thereafter, the inner surface of the tire is heated under pressure so as to thermally fuse the powderand bond the powderto the inner surface of the tire, thereby forming an inner liner layer

Method of manufacturing pneumatic tire

Primer composition containing polyisocyanate and phosphate for bonding

A moisture-curable urethane-based sealing composition is made up of an urethane prepolymer and a polyurethane compound blended together in specified amounts. The urethane prepolymer is derivable by reacting a selected class of polyether polyols with a selected class of polyisocyanate compounds. The polyurethane compound is available by reacting a selected class of polyether or polyester polyols with a selected class of polyisocyanate compounds, followed by reaction of the resulting prepolymer with a selected class of monoalcohols to thereby binder all isocyanate groups in the prepolymer. The ultimate sealant is adequate in initial adhesion strength, low in glass transition temperature and resistant to moist heat.

Moisture-curable urethane-based sealing composition

There is disclosed a process for preparing a one-component type sealant, comprising the steps of mixing powdery raw material such as prepolymer and additives admixed or not admixed with a predetermined amount of plasticizer in a mixer in a hermetically closed system, continuously degassing the mixed pasty material in a degassing line, and mixing the degassed mixture with catalyst admixed or not admixed with plasticizer.

Process for preparing one-component type sealant

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Hadano, Japan

Masamichi Danjo