| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a two-part urethane resin composition for a foam whetstone for stably producing a molded article for a foam whetstone with a two-part mixing and casting machine and for producing a urethane foam whetstone excellent in mechanical properties as a foam whetstone and having high hydrophilicity, a polyurethane foam whetstone using the urethane resin composition, and a method for producing a polyurethane foam whetstone. <P>SOLUTION: The two-part urethane resin composition for the foam whetstone comprises a base resin containing an isocyanate group-terminated urethane prepolymer (1), a curing agent (2), and water (3), wherein the curing agent (2) comprises a polyaminochlorophenylmethane mixture (A) containing 80-100 wt.% of a dinuclear polyaminochlorophenylmethane compound represented by formula (wherein, X represents chlorine atom or hydrogen atom) and a polyethylene glycol (B). <P>COPYRIGHT: (C)2012,JPO&INPIT |
