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:
Nov. 26, 1991
Filed:
Jul. 26, 1990
Applicant:
Inventors:
James E Borland, Baton Rouge, LA (US);
Y-D. Mark Chen, Baton Rouge, LA (US);
Joe D Sauer, Baton Rouge, LA (US);
Kim R Smith, Baton Rouge, LA (US);
Rebecca F Smith, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564298 ; 564297 ; 20415782 ;
Abstract
Amine oxides, such as amine oxide dihydrates, which have become discolored by being prepared from tert-amines and hydrogen peroxide in a liquid medium constituting not more than 50% of the weight of the reaction mixture and in the presence of carbon dioxide are bleached by exposing them to visible light, preferably incandescent light having a luminosity of at least about 1750 lumens.