The Yokohama Rubber Co., Ltd.

Shigeo Omote

Misao Hiza

Hajime Yamazaki

Kunio Kageyama

Toshinobu Takahashi

Mimuo Kawaguchi

Youichi Taguchi

Hazime Yamazaki

Kiyonaga Yamaguchi

An adhesive composition comprising, by weight, (1) 100 parts of triglycidyl ether of trisphenol, (2) 0-40 parts of a polyfunctional epoxy resin, (3) a diamine type curing agent selected from (a) an aromatic diamine compound and (b) a reaction product having an amino group at each terminal thereof, prepared by reacting together an aromatic diamine compound, divinylsilane compound and bismaleimide compound, and, if desired, (4) a powdery inorganic filler.

Adhesive compositions

Epoxy resin composition

There is disclosed a corrosion preventive resin composition comprising an epoxy resin and at least one curing agent therefor. The epoxy resin comprises at least 40 wt % of a specific type of urethane-modified epoxy resin which is obtained by reaction between a compound having at least one epoxy group and at least one hydroxyl group and a urethane bond-bearing compound having isocyanate end groups and obtained by reaction between a polyhydroxyl compound and a polyisocyanate compound. The curing agent for the epoxy resin is at least one member selected from the group consisting of polyamines, polyamides and polymercaptans, all of which are sparingly soluble in water.

Corrosion preventive resin composition

A cured puncture sealant for a tire which comprises (1) either a copolymer of at least one acrylate selected from 2-ethylhexyl acrylate and n-butyl acrylate, and a glycidyl monomer, or a copolymer of at least one of the above acrylates, a glycidyl monomer, and at least one other acrylic monomer, and (2) a curing agent for epoxy resin. The sealant may optionally further include a polymer whose solubility parameter to the above copolymer is in the range of .+-.0.5. The sealant is most effective as a puncture sealant for a tubeless tire.

Puncture sealant for a tire

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Hiratsuka, Japan

Shigeo Omote