Graft copolymers having improved phase binding between the graft base and the grafted-on polymer phase

US5384381A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Klaus Kohlhammer · Marktl, DE
• Hermann Petersen · Burghausen, DE
• Walter Dobler · Schwetzingen, DE

Key dates

• Filing date: Nov 15, 1993
• Grant date: Jan 24, 1995
• Expiry date: Nov 15, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F293/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Graft copolymers having improved phase binding between the graft base and the grafted-on polymer, are prepared from: PA0 a) a grafted-on polymer phase containing one or more monomers from the group consisting of (meth)acrylates of alcohols having 1 to 10 carbon atoms, vinyl esters of saturated aliphatic carboxylic acids having 2 to 10 carbon atoms, olefins, vinyl halides, styrene and styrene derivatives, and PA0 b) a peroxy group-containing copolymer phase containing from 0.01 to 20% by weight of an olefinically unsaturated peroxy compound of the general formula I or II ##STR1## where R.sup.1 is a chemical bond or a linear or branched alkyl chain having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms, R.sup.2 and R.sup.3 are an alkyl group having 1 to 4 carbon atoms, R.sup.4 is an alkyl group or an alkyl-substituted phenyl group having 3 to 12 carbon atoms, and R.sup.5 is a cycloalkyl group having 3 to 12 carbon atoms, and from 80 to 99.9% by weight of one or more comonomers from the group consisting of the (meth)acrylates of alcohols having 1 to 10 carbon atoms, vinyl esters of saturated aliphatic carboxylic acids having 2 to 10 carbon atoms, olefins, vinyla…