Patent ID: 6326408
Filing Date: 2001-12-04
Classification: C08J,Y02W

Abstract:
A process for the conversion of a polymer consisting of an expanded styrenic polymer or an expanded styrenic copolymer, characterised in that:said polymer is treated with a conversion solution comprising:a major proportion of a solvent making it possible to modify the physical state of said polymer from an expanded solid state to a non-expanded amorphous state such as to obtain a magma,a minor proportion of a non-greasy lubricant consisting of glycerine or a polytetrafluoroethylene in a sufficient amount to give said magma a non-sticky surface state and, if necessary,a minor proportion of an alcohol in a sufficient amount to bind said solvent and said lubricant in said solution,said magma is recovered and, if necessary,all or part of said solvent is evaporated.