Method for producing technical oleic acid methyl esters

US7064223B2 · kind B2 · utility

Assignee

• Cognis France S.A.S. · FR

Inventors

• Stephan Heck · Pulheim, DE
• Volker Winterhoff · Ratingen, DE
• Bernhard Gutsche · Hilden, DE
• Georg Fieg · Hamburg, DE
• Uwe Mueller · Jena, DE
• Jean-Pierre Rigal · Annecy, FR
• Thomas Kapala · Ratingen, DE

Key dates

• Filing date: Nov 21, 2002
• Grant date: Jun 20, 2006
• Expiry date: Nov 21, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11B3/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for making technical oleic acid methyl esters having a stearic acid methyl ester content of less than about 2% by weight, and a palmitic acid methyl ester content of less than about 5%, comprising: (a) providing a C8-18 palm kernel oil fatty acid methyl ester; (b) fractionally distilling said C8-18 palm kernel oil fatty acid methyl ester to form a C8-14 head product and a C16-18 bottom product; (c) fractionally distilling the C16-18 bottom product to form a short-chain C16 head product and a long-chain and unsaturated C18 bottom product; (d) fractionally distilling the long-chain and unsaturated C18 bottom product to form a predominantly unsaturated head product having a high palmitic acid methyl ester content and a predominantly unsaturated bottom product have a minimal palmitic acid methyl ester content; and (e) fractionally distilling the predominantly unsaturated bottom product have a minimal palmitic acid methyl ester content to form a head product rich in oleic acid methyl ester and poor in stearic acid methyl ester and a bottom product rich in both oleic acid methyl ester and stearic acid methyl ester.