Thermoplastic molding material

US4647621A · kind A · utility

Assignee

• BASF SE

Inventors

• Juergen Pohrt · Mannheim, DE
• Ruediger Matern · Ilvesheim, DE
• Helmut Jenne · Schriesheim, DE
• Hermann Gausepohl · Mutterstadt, DE
• Karl Gerberding · Monsheim, DE

Key dates

• Filing date: Jun 28, 1984
• Grant date: Mar 3, 1987
• Expiry date: Jun 28, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/905
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic molding material comprises copolymers I and II. Copolymer I is a high-impact (graft) copolymer which is derived from a monovinyl-aromatic monomer and a polymer or copolymer predominantly containing polymerized 1,3-diene units, and is present in a proportion of 0.1-1.0% by weight, based on the molding material. Copolymer II is a block copolymer with star-shaped branching, ie. a radial block copolymer, having an average of more than two branches per molecule. It is substantially derived from 55-80% by weight of a monovinyl-aromatic monomer and 20-45% by weight of a 1,3-diene monomer. The molding material may contain conventional assistants and is used for the production of blown film.