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:
Oct. 30, 1979
Filed:
Mar. 11, 1975
Applicant:
Inventors:
Marcel Prillieux, Mont-Saint-Aignan, FR;
Marcel Robert, Mont-Saint-Aignan, FR;
Robert Tirtiaux, Mont-Saint-Aignan, FR;
Assignee:
Exxon Research & Engineering Co., Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
The development of color of a concentrate of alkarylsulphonic acids is reduced by adding to and dissolving in the freshly prepared concentrate up to 5% of its weight of an organic compound having at least one ether group therein, the partial vapor pressure of the compound thus dissolved in the concentrate being negligible at the temperatures at which the concentrate is stored or transported. Examples of suitable organic compounds are aliphatic or phenolic monoethers, e.g. diethylene glycol.