| abstract |
The present invention relates to prepolymers which have been prepared by reacting resins with organophosphorus compounds based on phosphinic acid derivatives, and their use for the production of flame-resistant polymers, in particular duromers, and the polymers produced therewith.n n n In particular, the invention relates to a prepolymer for flame-resistant polymers, in particular duromers, which is obtained by reacting at least one phosphinic acid derivative of the formula I. (R 1 O) (R 2 ) P (O) -R 3 , wherein R 1 and R 2 independently represent an optionally substituted alkyl, aryl, arylalkyl, alkylaryl or alkylarylalkyl group having 1 to 20 carbon atoms, R 3 represents hydrogen or an optionally substituted alkyl, aryl, arylalkyl, alkylaryl or alkylarylalkyl group having 1 to 20 carbon atoms, with at least one resin, preferably selected from the group consisting of an epoxy resin, cyanate resin, an unsaturated polyester, vinyl ester, phenolic resin and a bismaleimide. |