METHOD FOR PRODUCING POLYURETHANE-RIGID FOAMS AND POLYISOCYANURATE RIGID FOAMS

摘要

The present invention One or more polyisocyanates A), b1) b11) from 50 to 100 mol%, based on the dicarboxylic acid composition, of at least one aromatic dicarboxylic acid or derivative thereof, b12) 0 to 50 mol% of at least one aliphatic dicarboxylic acid or derivative thereof based on the dicarboxylic acid composition b1) Of 10 to 70 mol% of a dicarboxylic acid composition b2) 2 to 30 mol% of one or more fatty acids and / or fatty acid derivatives, b3) from 10 to 70 mol% of at least one aliphatic or cycloaliphatic diol having from 2 to 18 carbon atoms or an alkoxylate thereof, b4) 2 to 50 mol% of a polyether polyol having 2 or more functionalities prepared by alkoxylating a polyol having two or more functionalities in the presence of an amine as a catalyst Aromatic dicarboxylic acid-based polyether ester polyols B) which can be obtained by esterification of Optionally further polyester polyols C) other than those of component B), and One or more polyether polyols D) Of the sum of the components B) and optionally C) to the component D) is not less than 7. The present invention also relates to the use of such hard foams and also for the production of sandwich elements having a hard or soft outer layer. The present invention also relates to a polyol component which forms the basis.