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:
Sep. 11, 1990
Filed:
Apr. 12, 1988
Applicant:
Inventors:
Alain L Lenack, Bonsecours, FR;
Fernand J Kech, Mont-Saint-Aignan, FR;
Assignee:
Exxon Chemical Patents Inc., Linden, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 495 ; 252 496 ; 252 73 ; 252 781 ; 72 42 ;
Abstract
The use of a water-soluble hydroxyl di- or tri-carboxylic acid, generally in combination with an alkanolamine in an oil water fluid especially metal working or hydraulic fluids results in a fluid having excellent hard water compatibility, low foaming tendency in soft water and a good biostability; other additives such as emulsifiers, copper passivators and the like are generally present.