A resinous composition resistant to the action of the time having improved opacity and impact resistance.

摘要

Invention patent: b "resinous composition resistant to the action of the time having improved opacity and impact resistance" d .A thermoplastic molding composition is disclosed comprising a grafted rubber and a matrix co polymer.The composition is characterized by that its grafted rubber includes a substrate.A first phase grafted and grafted subsequ00b3ente phase which are grafted to the substrate sequ00b3encialmente referred to.The substrate contains a cross-linked elastomer is grafted with a first phase grafted and grafted with a phase subsequ00b3ente,Both phases containing copolymers of at least one monomer vinilaromu00e1tico and at least one member selected from the group consisting of (MET) acrylonitrile and (MET) alkyl acrylate.The relative proportions of the monomers consituindo phases copolimerizadas differ from one another.The rubber grafted is present in the form of very small particles having a weight average particle size of about 0.1 to 1.0 micron.The composition is characterized by improved resistance to impact and reduced opacity.