Thermoplastic ABS moulding compositions

US5708079A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Herbert Eichenauer · Dormagen, DE
• Edgar Leitz · Dormagen, DE
• Karl-Erwin Piejko · Bensberg, DE
• Peter Kruger · Lübeck, DE

Key dates

• Filing date: May 6, 1996
• Grant date: Jan 13, 1998
• Expiry date: May 6, 2016

Classification

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

Abstract

Thermoplastic moulding compositions containing PA1 A) 5 to 95 parts by wt of at least one particle-shaped graft rubber polymer of the ABS type manufactured by emulsion polymerization, in which the graft rubber particles have such a structure detectable by transmission electron microscope photographs, in which the individual particles contain irregular cell-shaped inclusions of resin-forming polymer and the surface of the particles shows such an irregular toothed structure, that for every particle imaged 5 to 30 of such teeth are present, which are distinguished from an idealized round particle (with a diameter d) by a diameter d+d/x with x=3 to 15, PA1 B) 95 to 5 parts by wt of at least one particle-shaped graft rubber polymer of the ABS type manufactured by emulsion polymerization, in which the graft rubber particles have such a structure detectable by transmission electron microscope photographs, in which the individual particles do not have a pronounced inner structure as in A) and possess a round particle shape with completely tooth-free surface and optionally PA1 C) 0 to 300 parts by wt of at least one thermoplastic rubber-free resin.