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. 03, 2013
Filed:
Oct. 06, 2010
Applicants:
Guido D. Frey, Riedstadt, DE;
Thorsten Kreickmann, Oberhausen, DE;
Heinz Strutz, Moers, DE;
Inventors:
Assignee:
Oxea GmbH, Oberhausen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 69/003 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with ozone or ozone-containing gases and an immediately subsequent steam treatment with subsequent drying.