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. 13, 1976
Filed:
Nov. 18, 1974
Applicant:
Inventors:
Dennis G Petrille, Naperville, IL (US);
Robert E Karll, Batavia, IL (US);
Assignee:
Standard Oil Company, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
Viscous liquid propene or butene polymers having number average molecular weights of about 250-500 are converted to the corresponding oil-soluble ammonium alkenyl sulfonates by treatment of the polymer with gaseous sulfur trioxide in a falling-film reactor, separation of the oil-soluble polymer sulfonic acids and oil-soluble polymer sultones from the sulfonation product mixture, and neutralization of the sulfonic acids and sultones with anhydrous ammonia.