The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2003
Filed:
Jun. 05, 2000
Applicant:
Inventors:
A. Fred Elsasser, Cincinnati, OH (US);
C. William Blewett, Lakeside Park, KY (US);
Assignee:
Cognis Corporation, Gulph Mills, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/00 ; C09F 5/12 ; C11B 3/14 ; C07C 2/980 ;
U.S. Cl.
CPC ...
B01D 3/00 ; C09F 5/12 ; C11B 3/14 ; C07C 2/980 ;
Abstract
Methods of recovering free fatty acids having a low ester content from alkanol-containing solutions and oil mixtures containing tocopherols are disclosed which involve atmospheric or vacuum stripping at low temperatures. The recovered fatty acids have a high acid value, and have high commercial value in the production of high quality (high acid value) products, e.g., dimerized fatty acids, useful in polyamide resins.