Separation of plant oil triglyceride mixtures by solid bed adsorption

US7097770B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Zenon Lysenko · Midland, US
• Sanjeev Katti · Jamkhed, IN
• Richard T. Stringfield · Midland, US
• Thomas D. Gregory · Midland, US
• George J. Quarderer · Midland, US

Key dates

• Filing date: Mar 21, 2002
• Grant date: Aug 29, 2006
• Expiry date: Apr 27, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11B7/0058
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A solid bed adsorptive process for separating a seed oil into two substantially pure triglyceride fractions. The process involves contacting a seed oil, such as castor oil, preferably as a concentrate, with an adsorbent in a bed, the adsorbent having a particle size greater than about 40 microns, and thereafter contacting the adsorbent with a desorbent material, preferably under minimal flow conditions, to obtain a raffinate output stream containing predominantly a second triglyceride and an extract output stream containing predominantly a first triglyceride. Purified fatty acid triglyceride esters obtainable from castor, vernonia, and lesquerella plant oils provide renewable, non-petroleum-based sources of chemical feedstocks.