Hydrolysis-resistant copolyether-esteramides

摘要

Hydrolysis-resistant copolyether-esteramides according to this invention are terminated, at one chain end, by a hydrocarbon radical and at the other chain end by a hydroxyl group. The sequential linear aliphatic copolyether-esteramides according to the invention are obtained by a polycondensation reaction of linear aliphatic dicarboxylic polyamide oligomers having a molecular weight comprised between 300 and 15,000, with omega - omega '-dihydroxyl polyoxyalkylene sequences having a molecular weight comprised between 100 and 6000 in the presence of a linear aliphatic monocarboxylic polyamide oligomer having a carboxyl group at one end of the macromolecular chain and a hydrocarbon radical at the other end thereof.