Process for esterifying or transesterifying side chains in polymers

US8273555B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Dietmar Haering · Edingen-Neckarhausen, DE
• Lidcay Herrera Taboada · Barcelona, ES
• Bernhard Hauer · Neheim, DE
• Thomas Friedrich · Darmstadt, DE
• Alexander Goethlich · Mannheim, DE

Key dates

• Filing date: Nov 24, 2006
• Grant date: Sep 25, 2012
• Expiry date: Mar 8, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/62
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Provided is a process for esterifying or transesterifying side chains in polymers, which involves esterifying or transesterifying the carboxyl group having the R4 radical of a copolymer obtained by polymerizing a (meth)acrylate of formula (I), and a monomer of formula (II):wherein R1 and R3 are independently H or CH3, R2 and R4 are independently H or an alkyl radical which is optionally substituted by functional groups such as acryloyl, ether, amino, epoxy, halogen or sulfonic acid groups, and n is from 1 to 40, with an alcohol in the presence of an enzyme which catalyzes the esterifying or transesterifying. Further provided is the esterified or transesterified polymer product and its use.