Kao Corporation

Mitsuru Sakai

Masayoshi Morii

Atsushi Ishikawa

Masayuki Kato

Akito Itoi

Shigeo Nakai

Kazunari Takemura

Makoto Okubo

Shoichiro Harada

Kazuhiko Kiuchi

Masuo Sawa

Shinya Nomura

Process for producing polyurethane

Process for producing polyurethane foam

A semi-rigid polyurethane foam having a strength retention of not less than 70% when allowing it to stand at 120&deg; C. for 24 hours, and a Haze value of not more than 2 as determined by Fogging test, prepared by mixing a polyol mixture comprising a polyol, water and a catalyst with a polyisocyanate, and foaming the resulting mixture, and a process for preparing the same. The semi-rigid polyurethane foam would not cause fogging under high-temperature conditions, and can be suitably used for interior materials of automobiles such as headrests and armrests.

Semi-rigid polyurethane foam

Urethane foam for shoe soles

A polyester-polyol prepared by polycondensation of an acid component comprising terephthalic acid and adipic acid, and a polyhydric alcohol component, wherein the molar ratio of the terephthalic acid/adipic acid is 0.05 to 0.3; a process for preparing a polyurethane foam comprising reacting a polyisocyanate component and a polyol component, wherein the polyol component contains the above polyester-polyol; and a process for preparing a polyurethane foam comprising reacting an isocyanate prepolymer made of a polyisocyanate component and a polyol component (I) with a polyol component (II), wherein the polyol component (I) comprises the above polyester-polyol.

Process for preparing polyurethane foam

Sand compositions containing a binder composition and a curing agent, in which the binder composition comprises (a) a binder comprising an acid-curable resin and (b) from 0.5 to 63.0% by weight, based on the binder composition, of at least one curing accelerator selected from compounds represented by formula (1): ##STR1## wherein X.sub.1, X.sub.2 each represent a hydrogen atom, a methyl group or an ethyl group; exhibit an increased curing rate to provide a casting mold having an increased initial strength.

Binder composition for mold making, binder/curing agent composition for

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Wakayama, Japan

Mitsuru Sakai