Patent ID: 6613861
Filing Date: 2003-09-02
Classification: C08G

Abstract:
A polyaddition product containing hydroxyl and uretdione groups obtained by reactingI. from 40 to 85% by weight of an uretdione of isophorone diisocyanate and II. from 60 to 15% by weight of two or more different diols, and one or more chain extenders, wherein the polyaddition product has one or more terminal hydroxyl groups, a hydroxyl functionality of 2 and a molecular mass of from 4,500 to 10,000, wherein said two or more different diols are selected from the group consisting of ethylene glycol, butane-1,4-diol, pentane-1,5-diol, hexane-1,6-diol, 3-methylpentane-1,5-diol, 2,2,4(2,4,4)-trimethylhexanediol (isomer mixture) and neopentylglycol hydroxypivalate.