Sanyo Chemical Industries, Ltd.

Toyota Jidosha Kogyo Kabushiki Kaisha

Sanyo Chemical Ind., Ltd.

Kozaburo Nagata

Isao Ishikawa

Takao Nomura

Yoshio Taguchi

Takayuki Tsuji

Masahiro Matsuoka

Takao Ando

Motonao Kaku

Tetsuya Samura

Futoshi Kitatani

Toru Nakanishi

Takuji Isaka

Hidefumi Ohta

Kohei Maeda

Kazuya Otani

Water-absorbent resin dispersion and polyurethane composition

The present invention is directed to flexible polyurethane foams useful as seat cushioning material for vehicles, aircraft, furniture and the like. The polyurethane foams are characterized by improved wet compression set properties, improved firmness, resilience and elongation. The foams are made by a process which comprises reacting a polyol having a hydroxyl equivalent of from 800-10,000, a glycerin derivative having oxyethylene groups thereon but characterized by having a significant number of unreacted secondary hydroxyl groups of glycerin, (c) water and (d) an organic polyisocyanate.

Process for manufacturing polyurethane foams

High-density polyisocyanurate resins having improved rigidity, heat resistance and/or impact resistance can be obtained by reacting a polyisocyanate with a polymer polyol derived from a polyol having a molecular weight of at least 4500, and optionally a crosslinker, in the presence of trimerization catalyst, using isocyanate index of 200-5000.

Polyisocyanurate resin and process for making the same

A flexible polyurethane foam which produces a reduced amount of smoke when in contact with a flame and which has flame resistant properties is produced by reacting, under foaming conditions, a polyetherpolyol having a hydroxyl number of 25 - 80 and, a primary hydroxyl group content of at least 10% and a liquid mixture of a polyoxyethylenepolyol modified polyisocyanate and a polyisocyanate monomer.

Flexible polyurethane foam

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Kusatsu, Japan

Kozaburo Nagata