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:
Jul. 19, 1994
Filed:
Sep. 02, 1992
Applicant:
Inventors:
Robert H Wollenberg, Orinda, CA (US);
Richard J Nelson, Pinole, CA (US);
John McDonald, Emeryville, CA (US);
Susanne G Ruelas, San Pablo, CA (US);
Curtis B Campbell, Hercules, CA (US);
Kathryn E Matera, Northford, CT (US);
Assignee:
Chevron Research and Technology Company, San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 18 ; 252 33 ; 562 82 ;
Abstract
This invention is directed to neutral and low overbased alkylphenoxy sulfonates derived from alkylphenols prepared by alkylating phenol with an acidic alkylation catalyst having a Hammett (H.sub.o) acidity function of about -2.3 or less (more negative).