公开(公告)号：US20170183489A1

公开(公告)日：2017-06-29

申请号：US15300389

申请日：2015-04-01

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Jordan KOPPING ,  Philipp BOECKMANN ,  Norbert NIESSNER ,  Lydia BEHRING

IPC: C08L25/12 ,  C08F265/06

CPC classification number: C08L25/12 ,  C08F265/04 ,  C08F265/06 ,  C08L2203/12 ,  C08L2203/16 ,  C08L51/04 ,  C08F212/10

Abstract: The invention relates to a process for producing moulding compositions containing: a) from 55 to 85% by weight of copolymer A composed of vinylaromatic monomer A1 and a,B-unsaturated monomer A2; b) from 15 to 45% by weight of graft copolymer B with particle size from 50 to 550 nm composed of: B 1: from 60 to 80% by weight of rubbery graft base B 1 composed of: B11: from 80 to 99% by weight of at least one C2-C8-alkyl acrylate, B12: from 0.5 to 2.5% by weight of cyclic crosslinking agent, B13: from 0 to 2% by weight of non-cyclic crosslinking agent, B2: from 20 to 40% by weight of at least one graft shell B2 composed of: B21: from 60 to 75% by weight of a styrene, B22: from 25 to 40% by weight of acrylonitrile, c) from 0 to 10% by weight of additives C; where the reaction time of the polymerization for producing the graft base B 1 is in the range from 2 to 5 h, and the addition of the starting materials takes place over at least two chronological segments.