Bridgestone Tire Company Limited

Ryozo Sakata

Takashi Ohashi

Toru Okuyama

Minoru Kojima

Katsuhiko Arai

Yoshiko Taniguchi

Masako Yoshida

Akira Suzuki

Masumi Saito

Hideki Sugihara

Masashi Dobashi

Hirobumi Ohwada

A laminate having excellent flameproofing and low-smoke development is disclosed. The laminate comprises an urethane modified polyisocyanurate foam as a core material and an aluminum foil or sheet as a surface material piled on at least one surface of the foam through a self-adhesion of the foam and passes Grade 2 incombustibility according to Japanese Industrial Standard (JIS) A-1321 combustion test.

Urethane modified polyisocyanurate foam surfaced with aluminum foil or

A process for producing a rigid polyurethane foam having excellent flame retardance and low-smoke development is disclosed. When the rigid polyurethane foam is produced by reacting a polyhydroxyl compound with an organic polyisocyanate in the presence of a blowing agent, a surfactant, a catalyst and other additives, 3-methylpentane-1,3,5-triol is used as a part of the polyhydroxyl compound.

Process for producing a rigid polyurethane foam having excellent flame

Polyisocyanurate foams having excellent heat resistance and flame resistance are produced by using no common organic silicone surfactant or using less than 0.2% by weight based on an organic polyisocyanate, of said organic silicone surfactant, when producing a polyisocyanurate foam by reacting an organic polyisocyanate, a blowing agent and a catalyst for trimerizing isocyanate and if necessary a surfactant, a modifier and the other additives.

Method for producing heat resistant and flame resistant polyisocyanurate

An excellent flame- and smoke-retardant non-shrinkable polyurethane foam is prepared by reacting a polyhydroxyl compound consisting of

Excellent flame-and smoke-retardant non-shrinkable polyurethane foam

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Higashiyamato, Japan

Ryozo Sakata