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. 19, 1997
Filed:
Mar. 24, 1995
Applicant:
Inventor:
Ian Macpherson, Richmond, VA (US);
Assignee:
Ethyl Corporation, , VA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
508491 ;
Abstract
The invention involves the use of biodegradable polyalpha olefins ('PAOs') to treat biodegradable industrial fluids, such as lubricants, hydraulic fluids, fuel oils, and the like, to: (a) reduce their pour point; (b) improve their oxidation stability performance; and/or, (c) improve their hydrolytic stability performance. A preferred industrial fluid is mixture of vegetable oil and branched alkane where the average molecular weight of the alkane is about 200-400, and the alkane additionally has a sufficient degree of branching to have a pour point of about -25.degree. C. or lower.