Patent Number: 8,575,269

Title: Transparent, tough and rigid molding compositions based on styrene-butadiene block copolymer mixtures

Abstract: A mixture which contains a) a copolymer or block copolymer A comprising one or more copolymer blocks (B/S)A which are respectively composed of from 65 to 95% by weight of vinylaromatic monomers and of from 35 to 5% by weight of dienes, and whose glass transition temperature TgA is in the range from 40.degree. to 90.degree. C., b) a block copolymer B comprising at least one hard block S which is composed of vinylaromatic monomers, and comprising one or more copolymer blocks (B/S)B which are respectively composed of from 20 to 60% by weight of vinylaromatic monomers and of from 80 to 40% by weight of dienes, and whose glass transition temperature TgB is in the range from -70.degree. to 0.degree. C., c) a polystyrene C, and its use for the production of packaging for electronics components.

Inventors: Knoll; Konrad (Mannheim, DE), Koch; Jurgen (Neuhofen, DE), Charoensirisomboon; Piyada (Mannheim, DE), Wagner; Daniel (Bad Durkheim, DE)

Assignee: Styrolution GmbH

International Classification: C08L 53/02 (20060101); B32B 3/12 (20060101); B32B 1/08 (20060101)

Expiration Date: 1/05/12017