| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a porous sheet-like product which exhibits good wet coagulability, is bulky and flexible, and is high resistant to a secretion from human skin. <P>SOLUTION: The porous sheet-like product is prepared by subjecting, to the wet film formation, a polyurethane composition comprising (a) an aliphatic copolycarbonate diol, (b) an organic diisocyanate and (c) a chain extender, wherein the component (a) has a number-average molecular weight of 500-20,000 and is composed of respective recurring units of formulas (1) and (2) and terminal hydroxy groups with a molar ratio of the recurring units (1) to recurring units (2) being (60:40) to (99:1). <P>COPYRIGHT: (C)2009,JPO&INPIT |
