POLYMERIC MATERIAL Russian patent published in 1997 - IPC

FIELD: chemistry of polymers. SUBSTANCE: composition comprising polystyrene reinforced with diene rubber and linear diene-styrene block copolymer. The polystyrene is polystyrene reinforced with 5-12% polybutadiene rubber and 0.5-5% linear block copolymer with molecular weight of 75.000 containing 25- 75% polystyrene, and diene-styrene block copolymer is linear block copolymer containing 20-80% polybutadiene having molecular weight of 5000-150.000 and 80-20% polystyrene having molecular weight of 5000-150.000, the ratio of components being as follows (wt%): 10-90 reinforced polystyrene; 5-50 polyethylene; 5-40 linear block copolymer. EFFECT: improved properties of the polymeric composition. 4 tbl