Polymeric blend

Claim 1

A polymeric blend composition comprising: A. a first ABS type polyblend prepared by polymerizing a solution of a first conjugated diene rubber dissolved in alkenyl aromatic and alkenyl nitrile monomers, having first grafted conjugated diene rubber particles with a particle size of about 0.7 to 10 microns, said first diene rubber particles having present about 1 to 5 parts of a monoalkenyl aromatic-alkenyl nitrile copolymer as grafted and occluded copolymer, said first polyblend having a rubber moiety present in an amount of about 1 to 15% by weight based on said first ABS polyblend, B. a second ABS type polyblend prepared by polymerizing alkenyl aromatic and alkenyl nitrile monomers in the presence of a second conjugated diene rubber dispersed as rubber particles in an aqueous latex, having second grafted conjugated diene rubber particles with a particle size of about 0.01 to 0.50 microns, said second diene rubber particles being grafted with said copolymer as a superstrate in an amount of about 0.10 to 2.5 parts per part of diene rubber, said second polyblend having a rubber moiety present in an amount of about 2 to 50% by weight of said second ABS polyblend, C. a grafted conjugated diene rubber terpolymer said diene rubber grafted with alkenyl aromatic and alkyl alkacrylate monomers and a rubber moiety of about 10 to 70% by weight, D. a block copolymer rubber of conjugated diene and alkenyl aromatic monomers, said diene monomer being present in at least 55% by weight of said copolymer, and E. a matrix copolymer of said alkenyl aromatic and alkenyl nitrile monomers, said polymeric blend having by weight, 10 to 15 parts of (A), 35 to 50 parts of (B), 3 to 15 parts of (C), 5 to 20 parts of (D), and 15 to 25 parts of (E), and having improved ductility at low temperatures.