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:
Jul. 16, 2002
Filed:
Jul. 16, 1999
Applicant:
Inventors:
Richard Neil Cawthorne, North Yorkshire, GB;
Robert William Humble, East Yorkshire, GB;
David Andrew Parker, Hull, GB;
Assignee:
Croda International PLC, North Humberside, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11B 3/00 ;
U.S. Cl.
CPC ...
C11B 3/00 ;
Abstract
A process for recovering 18-methyl eicosanoic acid (18-MEA) and/or alpha hydroxy acids (AHAs) from woolwax acids or derivatives thereof comprises the steps of heating the woolwax acids or derivatives thereof to 100 to 230° C. to form estolides and polymeric species; distilling to obtain a distillate (D1) and a residue (R1); and recovering 18-MEA from the distillate and/or recovering AHAs from the residue.