| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a polyurethane and polyurethane urea having low adhesiveness and high removability from a polyether polyol, a polyisocyanate compound and a chain extender. <P>SOLUTION: The method for producing a polyurethane from (a) a polyhydroxy hydrocarbon polymer having at least one hydroxy group at an end of the molecule, (b) the polyether polyol, (c) the polyisocyanate compound and (d) the chain extender is characterized by producing the polyurethane in the presence of an aprotic polar solvent. <P>COPYRIGHT: (C)2011,JPO&INPIT |
