ABS resins and process for making them

摘要

A polyblend of a high graft copolymer, a low graft copolymer and a matrix interpolymer is made by: (A) mixing a latex of the high graft copolymer and a latex of the low graft copolymer to provide a mixture thereof; (B) coagulating and at least partially dewatering the mixture of step (A); (C) melt blending the mixture of step (B) to provide a first polyblend; and (D) melt blending the first polyblend of step (C) with matrix interpolymer to provide a second polyblend.