Patent ID: 6706851
Filing Date: 2004-03-16
Classification: C08G,C08L

Abstract:
Polyetheresteramides (B) containing polyamide blocks comprising condensing dicarboxylic acid sulphonates either as chain limiters for the polyamide block or with a diamine as one of the constituent monomers of the polyamide block wherein a polyamide sequence comprises oligomers made by condensing one or more &agr;,&ohgr;-aminocarboxylic acids and/or of one or more lactams containing from 6 to 12 carbon atoms in the presence of a dicarboxylic acid sulphonate and optionally of a dicarboxylic acid containing from 4 to 12 carbon atoms, and the oligomers are of molecular mass {overscore (Mn)} between 400 and 900, and containing polyether blocks consisting essentially of alkylene oxide units.