公开(公告)号：US10550260B2

公开(公告)日：2020-02-04

申请号：US15558293

申请日：2016-03-17

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Thomas W. Cochran ,  John A. Morris

IPC: C08L51/04 ,  F25D23/06

Abstract: Polymer blends comprising components A), B) and C): A) 80 to 96% by weight of an impact modified styrenic polymer A), B) 1 to 7% by weight of a polymer blend B) comprising B1) 25 to 75% by weight of polyisobutylene and B2) 25 to 75% by weight of a polyolefin, C) 3 to 13% by weight of an elastomeric block copolymer C) of structure (A-(B/A))n-A, where A is a vinylaromatic block, (B/A) is a random copolymer block of vinylaromatic monomer and diene, and n is 1 to 10, exhibit improved environmental stress crack resistance properties in presence of hydrofluoro olefins.