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:
Aug. 06, 2024
Filed:
Mar. 31, 2023
Applicant:
Afton Chemical Corporation, Richmond, VA (US);
Inventors:
Brandon Knouse, Moseley, VA (US);
David Edwards, Richmond, VA (US);
Magdalena Makowska, Mechanicsville, VA (US);
Assignee:
Afton Chemical Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C07F 9/17 (2006.01); C10M 137/10 (2006.01); C10N 30/06 (2006.01); C10N 40/08 (2006.01);
U.S. Cl.
CPC ...
C10M 137/105 (2013.01); C07F 9/17 (2013.01); C10M 169/04 (2013.01); C10M 2203/003 (2013.01); C10M 2223/047 (2013.01); C10N 2030/06 (2013.01); C10N 2040/08 (2013.01);
Abstract
An oil-soluble phosphorus antiwear additive and a lubricating composition including the ashless antiwear additive having improved copper corrosion performance obtained by reacting an organic hydroxy compound with phosphorus pentasulfide to form a reaction product, distilling the reaction product and recovering a condensate, and reacting the condensate with an unsaturated ester of a carboxylic acid to form an oil-soluble phosphorus antiwear additive.