Method of producing modified vinyl ether polymers

US6512058B1 · kind B1 · utility

Assignee

• BYJ-Chemie GmbH · DE

Inventors

• Karlheinz Haubennestel · Wesel, DE
• Alfred Bubat · Xanten, DE

Key dates

• Filing date: Mar 21, 2000
• Grant date: Jan 28, 2003
• Expiry date: Mar 21, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to a method of producing modified vinyl ether polymers, wherein vinyl ether polymers comprising recurring units of general formula (I) where R represents a C2-C4 alkyl group and x denotes an integer from 10 to 1000, are partially transetherified with compounds of general formula Y—OH, wherein Y represents aliphatic and/or cycloaliphatic hydrocarbon groups comprising 5 to 30 carbon atoms, the hydrogen atoms of which can be replaced at least in part by halogen atoms and/or aryl radicals, and/or represents aliphatic, cycloaliphatic and/or aromatic groups with a molecular weight of up to 6000 which contain at least one ether group —O— or an ester group —COO— within the molecule, in the presence of compounds of the platinum metals with the release of the corresponding C2-C4 alcohols, wherein statistically at least one R radical is replaced by a Y radical per molecule of vinyl ether polymer.