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:
May. 01, 2001
Filed:
Jul. 19, 1994
Applicant:
Inventors:
Herve Hinnekens, Wetteren, BE;
Andre Demoulin, Beauvechanin, BE;
Assignee:
Fina Research, S.A., Feluy, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ; C07C 6/934 ; C09K 5/04 ;
U.S. Cl.
CPC ...
C10M / ; C10M / ; C07C 6/934 ; C09K 5/04 ;
Abstract
The present invention provides a lubricating oil or a lubricating oil additive, particularly suitable for a R-134a (1,1,1,2-tetrafluoroethane) or R-134 (1,1,2,2-tetrafluoroethane) refrigerant, consisting of a compound (X) that can be prepared by esterification of a polyoxyethoxylated glycerol with at least one polycarboxylic acid compound having from 2 to 20 carbon atoms, preferably from 4 to 13 carbon atoms, and at least one monocarboxylic acid compound having from 2 to 20 carbon atoms, preferably from 6 to 13 carbon atoms.