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:
Apr. 20, 1976
Filed:
Sep. 25, 1974
Applicant:
Inventors:
Alan E Straus, El Cerrito, CA (US);
William A Sweeney, Larkspur, CA (US);
Ralph House, El Sobrante, CA (US);
Samuel H Sharman, Kensington, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; E21B / ;
U.S. Cl.
CPC ...
252 / ; 166309 ; 175 69 ; 252 / ; 252307 ; 252530 ; 252535 ; 252549 ; 252554 ; 2605 / ;
Abstract
Organic disulfonic acids are produced by heating a sulfonate monomer at a temperature above 110.degree.C. in the substantial absence of water. Olefin sulfonation product mixtures, hydroxyalkane sulfonic acids, alkane sultones, alkene sulfonic acids and mixtures thereof are oligomerized under these conditions.