Patent ID: 8303873

Claim:
A process for producing a multilayer composite, comprising: preparing a first molding composition that is a mixture of: (a) 100 parts by weight of at least one polyamide and (b) from 0.005 to 10 parts by weight of a compound having at least two carbonate units based on 100 parts by weight of the polyamide; and coextruding the first molding composition and a second molding composition comprising a high-melting-point polymer having a crystallite melting point Tm of at least 275° C.; wherein the at least one polyamide and the at least one compound having at least two carbonate units are not melted together until the first molding composition and the second molding composition are coextruded and wherein the first molding composition comprises one or more polyamides selected from the group consisting of PA6, PA610, PA66/6, PA612, PA1010, PA1012, PA1212, PA613, PA614, PA1014, PA11, and PA12.