Patent ID: 7976749
Filing Date: 2011-07-12
Classification: B29C,B32B,Y10T

Abstract:
1. An injection moulding process for making a completely recyclable, multilayered article consisting of: i) a rigid layer formed of a thermoplastic polymer which comprises ii) a foamed skin layer formed of a thermoplastic polymer compatible with the material of the rigid layer, wherein in the process consists essentially of wherein the foamed skin layer forming thermoplastic polymer comprising polybutylene terephthalate, wherein the foamed skin layer forming thermoplastic polymer has a multiplicity of repeating long-chain ester units as soft segments and a multiplicity of repeating short-chain ester units as hard segments, said short-chain units being represented by the general formula (I): said long-chain ester units being represented by the general formulas (IIa) and/or (IIb): wherein: g. A is a divalent radical remaining after the removal of the carboxyl groups from an unsaturated or saturated long chain dicarboxylic acid having from 1 to 25 carbon atoms and h. O is oxygen wherein component B comprises