Graft polymers having a mat surface

US4668737A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Herbert Eichenauer · Dormagen, DE
• Karl Zabrocki · Waldbröl, DE
• Joachim D/o/ ring · Cologne, DE
• Karl-Heinz Ott
• Ludwig Bottenbruch · Krefeld, DE

Key dates

• Filing date: May 30, 1985
• Grant date: May 26, 1987
• Expiry date: May 30, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L51/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A graft product of from 40 to 99.8 parts by weight of styrene, .alpha.-methyl styrene, p-methyl styrene, vinyl toluene, methyl methacrylate or mixtures thereof, from 20 to 0.1 part by weight of a vinyl-group-containing, preferably heterocyclic nitrogen base, from 20 to 0.1 part by weight of a mono- or di-acid containing a polymerizable double bond and from 0 to 49 parts by weight of acrylonitrile on a particulate rubber having an average particle diameter (d.sub.50) of from 0.05 to 20.0 .mu.m and a glass temperature of .ltoreq.10.degree. C., the total rubber content amounting to between 5 and 80% by weight.