Heat curable, one-component polyurethane reactive compositions

摘要

The present invention relates to a heat curable, one-component polyurethane reactive compositions containing A) surface-modified, finely divided polyisocyanates in which 0.1 to 25 equivalent percent, based on the total number of NCO groups, of the NCO groups are deactivated and B) a mixture of relatively high molecular weight compounds having isocyanate-reactive groups containing 1) 5 to 40 wt. %, based on the weight of component B), of one or more aliphatic polyether polyamines and 2) 60 to 95 wt. %, based on the weight of component B), of a polyol mixture containing i) 10 to 60 wt. %, based on the weight of component B2), of at least one polyester polyol and ii) 40 to 90 wt. %, based on the weight of component B2), of at least one polyether polyol with predominantly primary hydroxyl groups. The present invention also relates to use of the heat curable, one-component polyurethane reactive compositions to prepare coatings, adhesives, anti-drumming products and sealants, especially seam sealants.