COPOLYAMIDES FROM BIS(AMINOPHENYL)SULFONE

摘要

The hydrolytic stability (and especially the resistance to immersion in boiling water) of polyamides of bis(amino-phenyl)sulphones (or mixtures thereof with up to 20 mole percent of at least one other diamine) and alpha , omega -polymethylene dicarboxylic acids having from six to 16 carbon atoms in all is improved by replacing from 3 to 36 mole percent of the dicarboxylic acid with a carbocyclic dicarboxylic acid. The products are useful as thermoplastic moulding materials and for conversion of films and fibers.