| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane resin which contains cellulose, a reproducible natural resource with small environmental load, and has high strength.SOLUTION: The polyurethane resin (I) is obtained by the reaction of an active hydrogen component (A) for polyurethane resin production containing crystalline cellulose (b) having crystallinity of 65% or more and an active hydrogen compound (a) with a polyisocyanate component (C). Preferably, the crystalline cellulose (b) is dispersed in the active hydrogen compound (a), and an average fiber length of (b) is 5-1,000 μm. Preferably, (a) is polyoxyalkylene polyol. The polyurethane resin molding is composed of the polyurethane resin (I) obtained by the reaction of the active hydrogen component (A) with the polyisocyanate component (C). |
