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:
Dec. 23, 2014
Filed:
Mar. 20, 2011
Pierre Tequi, Nointot, FR;
Curt B. Campbell, Hercules, CA (US);
Gilles P. Sinquin, Saint Martin du Manoir, FR;
Christine Boemare Gandon, Montivilliers, FR;
Kyle J. Frederic, Marrero, LA (US);
Eugene E. Spalla, Fairfield, CA (US);
Pierre Tequi, Nointot, FR;
Curt B. Campbell, Hercules, CA (US);
Gilles P. Sinquin, Saint Martin du Manoir, FR;
Christine Boemare Gandon, Montivilliers, FR;
Kyle J. Frederic, Marrero, LA (US);
Eugene E. Spalla, Fairfield, CA (US);
Chevron Oronite Company LLC, San Ramon, CA (US);
Abstract
Disclosed is a method for improving filtration in the preparation of an alkaline earth metal alkyltoluene sulfonate concentrate by selectively controlling the meta, ortho, para isomer distribution of the alkyl group of the alkyltoluene produced by the process comprising alkylating toluene with at least one isomerized normal alpha olefin, having from about 18 to about 30 carbon atoms and having from 20% to 100% branching in an alkylation process which includes monitoring % isomer formation and adjusting an alkylation process parameter in order to provide a target specified isomer content of less than 38% meta-isomer content; and thereafter sulfonating and neutralizing to produce a low base number sulfonated alkyltoluene concentrate having a Base Number of about 2 to 60 (ASTM D 2896).