POLYHYDROXYALKYL POLYCARBONAMIDES FOR THE PRODUCTION OF FLAME-RESISTANT POLYURETHANE RIGID FOAMS AND INTEGRAL FOAMS

摘要

POLYHYDROXYALKYL POLYCARBONAMIDES FOR THE PRODUCTION OF FLAME-RESISTANT POLYURETHANE RIGID FOAMS AND INTEGRAL FOAMS The invention relates to the use of poly-N,N-di-(hydroxyalkyl)-polycarbonamides of aliphatic or cycloaliphatic polycarboxylic acids as reactive flameretardants for polyurethane foams, and in particular polyurethane integral skin foams and polyurethane rigid foams which are produced with the aid of organic blowing agents. These reactive flame-retardants are added in quantities of from 11.5 to 50 parts by weight, and most preferably from 12 to 25 parts by weight, based on 100 parts of the relatively high molecular weight polyol used for the preparation of the foam. The integral skin or rigid foams produced are flame-resistant and because of their reduced flammability are capable of passing various regulation fire tests, and in particular those testing foams for use in vehicles for transport.