Organopolysiloxanes having quaternary ammonium groups and processes for the preparation thereof

US6730766B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Wolfgang Schattenmann · Burghausen, DE
• Michael Messner · Diedorf, DE
• Renate Minigshofer · Amberg, DE
• Evelyn Richter · Freising, DE

Key dates

• Filing date: Jul 25, 2002
• Grant date: May 4, 2004
• Expiry date: Jul 25, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Organopolysiloxanes bearing quaternary ammonium groups and containing units of the general formula—[R2—(SiR2—O)b—SiR2—R2—N+R12]n—·nX−  (I′)whereR are identical or different monovalent, SiC-bonded, optionally substituted C1-12 hydrocarbon radicals,R1 are identical or different monovalent, optionally substituted C1-12 hydrocarbon radicals or are a bridging alkylene radical,X is an organic or inorganic anion,R2 is a divalent hydrocarbon radical having at least 4 carbon atoms which contains at least one hydroxyl group and is optionally interrupted by one or more oxygens,b is an integer from 1 to 200 andn is an integer from 1 to 50.and processes for the preparation thereof.