Nisshinbo Industries, Inc.

Shiro Nagahata

Yasuo Imashiro

Eiji Sasaki

Kiyotake Morimoto

Tatsuya Okutani

A process for preparation of a polyurethane-polycarbodiimide foam which comprises reacting a polyol component containing a benzylic ether type phenol resin having hydroxymethyl groups with an organic polyisocyanate component in the presence of an organotin catalyst for urethane formation and a carbodiimidating catalyt. According to this process, it is unnecessary to use fluorine-containing halogenated hydrocarbons as a blowing agent, and blowing on the spot is possible using a spray blowing machine or the like.

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Tokyo, Japan

Shiro Nagahata