Impact-resistant molding compound made of styrene polymers

US6346572B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Wolfgang Loth · Bad Dürkheim, DE
• Konrad Knoll · Mannheim, DE
• Hermann Gausepohl · Mutterstadt, DE

Key dates

• Filing date: Dec 23, 1997
• Grant date: Feb 12, 2002
• Expiry date: Dec 23, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L53/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A molding material as based on from 60 to 98% by weight of a hard matrix A comprising polymerized or copolymerized units of at least one vinylaromatic monomer or at least one vinylaromatic monomer and at least one polar comonomer and from 2 to 40% by weight, the percentages in each case being based on the molding material comprising A and B, of a soft phase B formed from a hydrogenated or unhydrogenated block copolymer prepared by anionic polymerization and comprising a vinylaromatic monomer V and a diene D, having at least one random or quasi-random block (V/D) of vinylaromatic monomer and diene and containing from 10 to 80% by weight, based on the soft phase B, of occlusions of matrix material (a) formed during the polymerization of the hard matrix A in the presence of the block rubber, and said molding material is used for the production of films, sheets or moldings.