USE OF AMPHIPHILIC COPOLYMERS AS AGENTS ENHANCING THE THERMAL STABILITY AND UV RESISTANCE OF CHLORINATED THERMOPLASTIC MATERIALS AND LOADS, METHOD OF MANUFACTURING THESE MATERIALS

摘要

The present invention consists in the use, in a chlorinated and filled thermoplastic composition containing at least one chlorinated thermoplastic resin and at least one mineral filler, as an agent improving the thermal stability and the UV resistance of said composition, of an amphiphilic copolymer characterized in that: - it consists of at least one hydrophilic monomer and at least one hydrophobic monomer, - it has a weight average molecular weight of between 5,000 g / mol and 20,000 g / mol and a polymolecularity index of less than or equal to 3, and preferably a weight-average molar mass of between 10 000 g / mol and 15 000 g / mol and a polydispersity index of less than or equal to 2.5. It also relates to a process for producing a chlorinated and charged thermoplastic composition using said copolymer, as well as the composition obtained directly by said process.