Patent ID: 6297343
Filing Date: 2001-10-02
Classification: C08G

Abstract:
A polyaddition compound which is solid below 40.degree. C. and liquid above 125.degree. C., is prepared by the reaction of an isocyanate component containing uretdione groups with a polyol containing ester and/or carbonate groups, other than hydroxypivalic acid neopentylglycol ester, and hasa) an average isocyanate functionality of 2.0 to 8.0, and a content of free isocyanate groups (calculated as NCO; molecular weight=42) of 2.1 to 6.0 wt. %,b) a content of uretdione groups (calculated as C.sub.2,N.sub.2 O.sub.2 ; molecular weight=84) of 10 to 19 wt. %,c) a content of urethane groups (calculated as --NH--CO--O; molecular weight=59) of 10 to 17 wt. % andd) a content of ester groups --CO--O (calculated as --CO--O; molecular weight=44) and/or carbonate groups --O--CO--O (calculated as --CO--O; molecular weight=44) of 1 to 17 wt. %.