公开(公告)号：DE3441547A1

公开(公告)日：1986-05-15

申请号：DE3441547

申请日：1984-11-14

Applicant: BASF AG

Inventor： SCHUETTE WILHELM DR ,  MC KEE EDMUND DR ,  HILT ALBRECHT DR ,  GOERRISSEN HEINER DR ,  HEINZ GERHARD DR

IPC: C08L51/00 ,  C08L1/00 ,  C08L7/00 ,  C08L21/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L51/02 ,  C08L51/04 ,  C08L59/00 ,  C08L59/02 ,  C08L9/00 ,  C08J3/20

Abstract: Impact-resistant polyoxymethylene molding materials containing (A) from 30 to 95% by weight of one or more polyoxymethylenes and (B) from 5 to 70% by weight of one or more elastomeric graft polymers which are prepared by emulsion polymerization, are dispersed in component A, have a mean particle diameter of from 0.08 to 2 mu m and are composed of 1. from 60 to 90% by weight of a grafting base of crosslinked polybutadiene in which not more than 30% by weight of the butadiene may be replaced with isoprene, 2,3-dimethylbutadiene, styrene, p-methylstyrene, alpha -methylstyrene and/or (meth)acrylonitrile, and 2. from 10 to 40% by weight of one or more grafted shells consisting of polymers of styrene and/or methyl methacrylate, in which not more than 15% by weight of the said monomers 2 may be replaced with acrylonitrile or a C1-C8-alkyl acrylate, the percentages A and B and the percentages 1 and 2 summing to 100, with or without (C) effective amounts of assistants, and a process for their preparation.