Manufacturing polyacrylate esters with long-chain hydrocarbon and polyoxyalkylene groups

US5133898A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Jurgen Fock · Goldkronach, DE
• Eberhard Esselborn · Essen, DE
• Dietmar Schaefer · Hattingen, DE

Key dates

• Filing date: Jan 29, 1990
• Grant date: Jul 28, 1992
• Expiry date: Jan 29, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S516/918
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polyacrylate esters with long-chain hydrocarbon and polyoxyalkylene groups are disclosed, which are prepared by transesterification of polyacrylate alkyl esters, the alkyl groups of which have 1 to 4 carbon atoms and which were obtained by free radical polymerization, wherein the transesterification is carried out with a mixture of selected alcohols and polyoxyalkylene monools. Compared to products obtained by copolymerization, the transesterification products are largely free of undesirable low molecular weight components, have a narrow molecular weight distribution and exhibit excellent surfactant properties. They are useful especially as W/O emulsifiers for natural and synthetic oils.