COMPOSITION AND METHOD FOR IMPROVING THERMAL STABILITY AND/OR WEATHERING STABILITY OF SEGMENTED POLYURETHANE

摘要

PROBLEM TO BE SOLVED: To provide a composition and a method for improving thermal stability and/or weathering stability of a segmented polyurethane.;SOLUTION: The composition stabilizes of the segmented polyurethane by addition of combination of an antioxidant with benzofuranone and/or a sterically hindered amine and hydrazine or hydrazide. The composition comprises the segmented polyurethane and (a) one or more kinds of phenolic antioxidants, (b) a benzofuranone stabilizer and/or the sterically hindered amine and (c) a hydrazine or hydrazide stabilizer.;COPYRIGHT: (C)2006,JPO&NCIPI