Pour point depressants for paraffin solutions

US4650596A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Kaspar Schlueter · Solingen, DE
• Wolfgang Zoellner · Goldkronach, DE

Key dates

• Filing date: Jun 17, 1985
• Grant date: Mar 17, 1987
• Expiry date: Jun 17, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/524
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An ester/amide copolymer useful as a pour-point depressant, wherein: the ester comonomer is at least one acrylic acid or methacrylic acid--C.sub.16-24 aliphatic alcohol ester; the amide comonomer is at least one acrylamide or methacrylamide, unsubstituted or substituted at the nitrogen atom; and the mol ratio of ester to amide is about 2-10:1.