ABS moulding compositions

US4009226A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karl-Heinz Ott
• Gert Humme
• Dietmar Kranz · Cologne, DE
• Harry Rohr · Frechen, DE

Key dates

• Filing date: Apr 22, 1975
• Grant date: Feb 22, 1977
• Expiry date: Apr 22, 1995

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/942
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Moulding compositions containing PA1 A. 6 to 30 parts by weight of graft polymer obtained by grafting 20 to 60 parts by weight of a mixture of styrene and acrylonitrile in a ratio by weight of 95 : 5 to 60 : 40 onto 80 to 40 parts by weight of polybutadiene or a butadiene copolymer with a butadiene content of at least 30% with an average particle diameter of 0.26 to 0.65.mu. and a grafting degree of 0.15 to 0.7; PA1 B. 14 to 45 parts by weight of a graft polymer obtained by polymerizing 40 to 60 parts by weight of a mixture of styrene and acrylonitrile in a ratio by weight of 95 : 5 to 60 : 40 onto 60 to 40 parts by weight of polybutadiene or a butadiene copolymer with a butadiene content of at least 30%, with an average particle diameter of 0.05 to 0.25.mu. and a grafting degree of 0.4 to 0.9; and PA1 C. 25 to 80 parts by weight of a copolymer of styrene and/or .alpha.-methyl styrene on the one hand and acrylonitrile on the other hand in a ratio by weight of 80 : 20 to 60 : 40 and an average molecular weight (mean weight) M.sub.w of 50,000 to 200,000 and a molecular heterogeneity of U = 4.5 to 1.0.