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. 31, 2019
Filed:
Nov. 04, 2016
Applicant:
The Lubrizol Corporation, Wickliffe, OH (US);
Inventors:
Suzanne Patterson, Seven Hills, OH (US);
Brian B. Filippini, University Heights, OH (US);
Tomoya Higuchi, Tokyo, JP;
William R. S. Barton, Belper, GB;
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 137/08 (2006.01); C10M 135/36 (2006.01); C10M 129/56 (2006.01); C10M 107/02 (2006.01); C10M 141/10 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 107/02 (2013.01); C10M 129/56 (2013.01); C10M 135/36 (2013.01); C10M 137/08 (2013.01); C10M 141/10 (2013.01); C10M 2203/10 (2013.01); C10M 2205/0206 (2013.01); C10M 2205/0285 (2013.01); C10M 2207/26 (2013.01); C10M 2219/022 (2013.01); C10M 2219/106 (2013.01); C10M 2223/043 (2013.01); C10N 2210/02 (2013.01); C10N 2220/022 (2013.01); C10N 2230/02 (2013.01); C10N 2230/04 (2013.01); C10N 2230/06 (2013.01); C10N 2230/12 (2013.01); C10N 2230/42 (2013.01); C10N 2230/43 (2013.01); C10N 2240/04 (2013.01); C10N 2240/044 (2013.01); C10N 2270/00 (2013.01);
Abstract
A lubricant composition comprising an oil of lubricating viscosity and 0.01 to 5 percent by weight of a substantially sulfur-free alkyl phosphate amine salt, where at least 30 mole percent of the phosphorus atoms are in an alkyl pyrophosphate salt structure, exhibits good antiwear performance, even in the presence of corrosion inhibitor additives. In the phosphate amine salt, at least 80 mole percent of the alkyl groups are typically secondary alkyl groups of 3 to 12 carbon atoms.