POWDER COATING COMPOSITIONS CONTAINING POLYURETHANES HAVING (METH)ACRYLOYL GROUPS AS BINDERS

摘要

The present invention relates to powder coating compositions which can be cured in the presence of heat and/or high energy radiation and contain polyurethanes which melt at temperatures of 50 to 180.degree.C, have 3 to 10% by weight of olefinic double bonds in the form of (meth)acryloyl groups (calculated as =C=C=, molecular weight = 24) and are based on the reaction product of A) 40 to 80 parts by weight of one or more organic polyisocyanates with B) 15 to 50 parts by weight of one or more monohydric alcohols containing (meth)acryloyl groups and C) 2 to 20 parts by weight one or more compounds which are free from (meth)acryloyl groups and contain isocyanate reactive groups.