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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.:

US 5677270 B1

PDFFull Text
Date of Patent:
Oct. 14, 1997

Filed:

May. 14, 1996

Methods for preparing normal and overbased phenates

Applicant:
Inventors:

Vernon R Small, Jr, Rodeo, CA (US);

William Woodford Willis, Jr, Pinole, CA (US);

John McDonald, Emeryville, CA (US);

Torrey A Pennebaker, El Sobrante, CA (US);

Jean Louis Le Coent, Le Havre, FR;

Assignee:

Chevron Chemical Company, San Ramon, CA (US);

Attorney:

Schaal; Ernest A.

Primary Examiner:

Jacqueline V Howard

Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
508574 ;
Abstract

Processes for preparing normal and overbased metal sulfurized alkylphenates. The processes am characterized by a sulfurization reaction using a lower carboxylic acid catalyst which does not use a polyol promoter, e.g., ethylene glycol. The process affords a metal sulfurized phenate product which is essentially free of polyol oxidation products. The products are useful as additives for lubricating oils.

Find Patent Forward Citations

Small, Jr, Vernon. (1997). Methods for preparing normal and overbased phenates (U.S. Patent No. 5677270). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5677270

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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