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:
Jun. 12, 2012
Filed:
Nov. 29, 2007
James J. Harrison, Novato, CA (US);
John Mcdonald, Emeryville, CA (US);
James J. Harrison, Novato, CA (US);
John McDonald, Emeryville, CA (US);
Chevron Oronite Company LLC, San Ramon, CA (US);
Abstract
Provided herein are sulfurized metal alkyl phenate compositions having a low alkyl phenol content. The sulfurized metal alkyl phenate compositions can be prepared by reacting a phenol compound of Formula (I) disclosed herein with an aldehyde to form a phenolic resin of Formula (II) disclosed herein and then by reacting the phenolic resin simultaneously with a metal base and a first sulfurizing agent. The sulfurized metal alkyl phenate compositions and the overbased sulfurized metal alkyl phenate compositions disclosed herein may be used as detergents for formulating lubricating oil compositions. The lubricating oil compositions disclosed herein have a reduced amount of the free phenol compound and a salt thereof.