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:
Apr. 18, 1978
Filed:
May. 23, 1977
Applicant:
Inventor:
Gunter Caspari, Wheaton, IL (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ; C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 / ; 252 33 ; 252 34 ; 252 35 ; 252 39 ; 2524 / ;
Abstract
Disclosed are a process for manufacturing metal dithiophospates, and metal dithiophosphate compositions. The process for manufacturing zinc, barium, cadmium, magnesium or nickel dithiophosphates comprises reacting phosphorus pentasulfide with one or more alcohols to form a dithiophosphoric acid; neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of an acidic promoter; and reacting a substantial portion of the excess acidic promoter with a weak base. The metal dithiophosphates and lubricating oils containing said dithiophosphates are also disclosed.