Production of open-cellular rigid urethane foam

Abstract

Abstract PURPOSE:To obtain the titled urethane foam low in hygroscopicity and water absorptivity and excellent in heat resistance and low-temperature resistance, by using a polyol containing a specified ester of a higher fatty acid with a polyalcohol and a polyisocyanate as principal materials. CONSTITUTION:In the production of an open-cellular urethane foam by using a polyol and a polyisocyanate as principal materials, said polyol component contains at least 5wt%, based on the total polyol component, ester having at least one OH group, prepared by reacting a polyalcohol with an 8C or higher (un)saturated fatty acid (a product obtained by esterification of glycerin and soybean oil). It is possible to obtain an open-cellular rigid urethane foam low in hygroscopicity and water absorptivity and excellent in heat resistance and low-temperature resistance.

Inventors

• 👤 Takahito Sasaki
• 👤 隆人 佐々木
• 👤 Yutaka Ueno
• 👤 豊 上野
• 👤 Yasuji Tsunekawa
• 👤 恒川　保治

Bibliographic Details