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. 22, 1977
Filed:
May. 17, 1973
Fred Lowery Johnson, Jr, Austin, TX (US);
Texaco Development Corporation, New York, NY (US);
Abstract
An improved process for preparing olefin sulfonic acids and sulfonates by the reaction of sulfur trioxide and an olefin mixture having 14 to 16 carbon atoms per molecule which includes at least 30 percent by weight dimer olefins is disclosed. The olefin mixture and sulfur trioxide are mixed and reacted in a reaction zone of a continuous falling film reactor apparatus having a segregated cooling jacket, wherein the upper 1/8 to 1/3 of the reaction zone is operated and maintained at a constant temperature of between about 0.degree. to below about 27.degree. C and the lower 7/8 to 2/3 of the reaction zone is operated and maintained at a higher constant temperature of between about 25.degree. to about 40.degree. C. The acidic reactor effluent is then aged prior to neutralization. The improved process produces a resulting product having a low oil content and low color at increased production rates while greatly reducing the off gas plume for improved air pollution abatement.