Plasticized polymer compositions

Abstract

The invention relates to compositions comprising at least one polymer and at least one plasticizer, in which compositions the polymer is semi-crystalline and exhibits a processing temperature equal to or greater than 220° C., preferably 250° C., and the plasticizer is an aromatic benzenesulphonamide represented by the general formula (I) 1 in which R1 represents a hydrogen atom, a C1-C4 alkyl group or a C1-C4 alkoxy group, X represents a linear or branched C2-C10 alkylene group, or a cycloaliphatic group, or an aromatic group, Y represents one of the groups OH or 2 R2 representing a C1-C4 alkyl group or an aromatic group, these groups optionally themselves being substituted by an OH or C1-C4 alkyl group. The aromatic benzenesulphonamides have little volatility and exhibit good thermal stability, which makes it possible to effectively plasticize polyamides which are processed at high temperatures, such as polyamides-6, -6,6, -4,6, -6,9, -6,10, -6,12 and MDX-6 and polyketones, but also polyamides-11 and -12, polyoxymethylene and poly(vinylidene fluoride).

Dependencies are inferred from the claim text.