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. 10, 1979
Filed:
Apr. 13, 1976
Marvin L Nussbaum, Skokie, IL (US);
Edward A Knaggs, Deerfield, IL (US);
Stepan Chemical Company, Northfield, IL (US);
Abstract
A technique for sulfonating petroleum oil feed stocks which materially increases the extent of reaction between the sulfonatable components present in the feed stock and sulfur trioxide, and yields an improved sulfonated product. The invention provides a method which includes forming a liquid mixture of a petroleum oil feed stock and an organic additive, feeding such mixture to a reaction zone, and contacting the mixture with a reactable sulfur trioxide material. The additive appears to promote continuity of materials during the reaction in such a way that substantially homogeneous product compositions are obtained. The invention also includes the so-attained reaction products. Methods of neutralizing, digesting, purifying and other treatments to improve product utility are taught.