Anhydride-functional organo/(poly)siloxanes, a process for preparing the same and uses thereof

US5015700A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Christian Herzig · Waging am See, DE
• Josef Esterbauer · Bodelshausen, DE

Key dates

• Filing date: Aug 6, 1990
• Grant date: May 14, 1991
• Expiry date: Aug 6, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/38
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Anhydride-functional organo(poly)siloxanes having average units of the general formula ##EQU1## in which the R(s) are the same or different and represent a monovalent hydrocarbon radical or a monovalent halogenated hydrocarbon radical having from 1 to 18 carbon atom(s) per radical, A represents a radical of the formula ##STR1## in which R.sup.1 represents a hydrogen atom or a monovalent hydrocarbon radical or a monovalent halogenated hydrocarbon radical having from 1 to 12 carbon atom(s) per radical and R.sup.2 represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 12 carbon atom(s) per radical, or the two radicals R and R.sup.2 together represent a divalent hyrocarbon radical having from 3 to 5 carbon atoms per radical, R.sup.3 represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 4 carbon atom(s) per radical, with the proviso that R.sup.3 is a hydrogen atom if the two radicals R.sup.1 and R.sup.2 together represent a divalent hydrocarbon radical having from 3 to 5 carbon atoms per radical, R.sup.4, which may be the same or different, represent a hydrogen atom, a halogen atom or a cyano radical, a is 0 or 1, with an average of fro…