×

Impact-resistant polyoxymethylene molding materials and their preparation

  • US 4,639,488 A
  • Filed: 11/05/1985
  • Issued: 01/27/1987
  • Est. Priority Date: 11/14/1984
  • Status: Expired due to Fees
First Claim
Patent Images

1. An impact-resistant polyoxymethylene molding material 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 μ

  • m and are composed of1. 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 by one or more of isoprene, 2,3-dimethylbutadiene, styrene, p-methylstyrene, α

    -methylstyrene and (meth)acrylonitrile, and2. from 10 to 40% by weight of one or more grafted shells consisting of polymers of styrene, methyl methacrylate or mixtures thereof which not more than 30% 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,

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×