公开(公告)号：US20170152325A1

公开(公告)日：2017-06-01

申请号：US15319837

申请日：2015-06-17

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Roland WALKER ,  Sabine OEPEN ,  Gisbert MICHELS

IPC: C08C1/04 ,  C08L25/12 ,  C08L33/20 ,  C08F279/04

CPC classification number: C08C1/04 ,  C08F6/22 ,  C08F279/04 ,  C08L25/12 ,  C08L33/20 ,  C08L55/02

Abstract: A process for preparing an ABS graft copolymer, which comprises a step for isolating the graft copolymer B present in an aqueous dispersion by means of a precipitant which is an aqueous solution of a mixture of MgSO4, Al2(SO4) and/or H2SO4, is described. The ABS molding compositions obtained have an improved yellowness index and high surface gloss.