Thermoplastic moulding compositions of the ABS type

US5696204A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Herbert Eichenauer · Dormagen, DE
• Edgar Leitz · Dormagen, DE
• Karl-Erwin Piejko · Bensberg, DE
• Heinrich Alberts

Key dates

• Filing date: Feb 26, 1996
• Grant date: Dec 9, 1997
• Expiry date: Feb 26, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L55/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermoplastic moulding compositions comprising PA1 A) 1 to 60 parts by weight of at least one particulate graft rubber polymer of the ABS type which is produced by emulsion polymerisation, in which at least 50% of the graft rubber particles (number) have a structure detectable via transmission electron microscopy photographs in which the individual particles contain irregular cellular inclusions of resin-forming polymer and the surface of the particles has an irregular jagged structure such that 5 to 30 of such peaks are present per depicted particle, which particles differ from an idealised round particle (having a diameter d) by a diameter d+d/x, where x=3 to 15, PA1 B) 40 to 99 parts by weight of at least one particulate graft rubber polymer of the ABS type which is produced by solution or bulk polymerisation and which has the morphology which is characteristic of bulk types of ABS, and optionally PA1 C) 0 to 200 parts by weight of at least one thermoplastic, rubber-free resin.