| 摘要 |
To provide a raw material composition capable of producing an integral skin foam having high productivity and maintaining the applicability of a plant-derived castor oil and/or castor oil derivative as high as 40 weight % or more in polyol mixture. Provided is a composition for a polyurethane integral skin foam, which is a composition for producing an integral skin foam with a density of 0.2 to 0.8 g/cm3 by a reactive injection molding process from polyisocyanate (A) and a polyol mixture (B) including polyol, a cross-linking agent, a foaming agent, and a catalyst, characterized in that (1) the polyol contains 40 parts by weight or more of castor oil and/or castor oil derivative relative to 100 parts by weight of polyol mixture, and the castor oil derivative has an average number of functional groups of 2.0 to 2.7 and a hydroxyl value of 30 to 170 mg KOH/g, and (2) the catalyst contains both tertiary amine and metal catalyst. |
