THERMOPLASTISCHE FORMMASSE.

摘要

The compsns. (I) contain, on wt. A + B, A) 98-80 wt% at least one polymer (II) contg styrene or substd styrene; and B) 2-20 wt% at least one linear, hydrogenated block copolymer (II) of wt average mol wt 50,000-200,000 contg styrene and butadiene. Total styrene content of (III) is 40-60 wt%, 5-25 wt% (III) being as block polystyrene and remainder of styrene being statistically distributed in the 60-40 wt% hydrogenated butadiene. (I) consists of A) and B). (I) contain 96-86 wt% (II) and 4-14 wt% (III). (II) is impact-resistant polystyrene contg 3-20 wt%, on wt A), polybutadiene grafted with styrene. Total styrene content of (III) is 50-55 wt% and wt ave mol wt of (II) is 75,000-150,000. (I) contain C) 0.05-25 pts wt conventional additives per 100 pts A + B + C.