COMPOSITION OF A STYRENE RESIN, AND A PRE-COMPOUNDED POLYMER SYSTEM COMPRISING A POLYOLEFIN AND A SELECTIVELY HYDROGENATED BLOCK COPOLYMER OF A VINYL AROMATIC COMPOUND AND AN OLEFINIC ELASTOMER

摘要

8CH-2704ABSTRACT OF THE DISCLOSUREThere are provided compositions comprising (a) a poly-styrene resin; and (b) a precompounded polymer system com-prising an olefinic resin and a selectively hydrogenatedelastomeric block copolymer resin alone, or in furthercombination with a styrene resin; and, (c) optionally, ahydrogenated elastomeric block copolymer resin. The useof (a) and (b) together provided high impact strengthwithout the delamination problems experience with theknown combinations of (a) and (c).