| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a polyurethane resin, capable of providing a polyurethane resin product, using diphenylmethane diisocyanate as a polyisocyanate, with good productivity and hardenability and without an odor problem, toxicity or an environmental problem. <P>SOLUTION: The method for producing a polyurethane resin includes reacting a polyol component with an isocyanate component in the presence of an urethanation catalyst. The urethanation catalyst contains an amine compound represented by general formula (1), wherein X represents hydroxyl, hydroxymethyl or hydroxyethyl. The isocyanate component contains diphenylmethane diisocyanate, and the content of 4,4'-diphenylmethane diisocyanate in the diphenylmethane diisocyanate is 90 wt.% or more. <P>COPYRIGHT: (C)2012,JPO&INPIT |
