Acetal polymer compositions having improved impact strength

摘要

The invention relates to acetal polymer molding compositions having improved impact strength and containing lower amounts than the acetal polymer of a thermoplastic polyurethane, e.g. a polyether- or polyester- based polyurethane, and a multiphase composite interpolymer, e.g. comprising an elastomeric acrylic phase onto which is grafted a rigid thermoplastic polymeric phase. The composition is preferably blended at a shear rate of less than about 5000 sec-1.