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. 02, 1989
Filed:
Oct. 16, 1986
Dale D Carr, Morristown, NJ (US);
Nicholas DeGeorge, deceased, late of Metuchen, NJ (US);
Hatco Chemical Corporation, Fords, NJ (US);
Abstract
An improved synthetic ester lubricant base stock formed by reacting at least one of trimethylolpropane and monopentaerythritol with a mixture of aliphatic monocarboxylic acids is provided. The mixture of acids including straight-chain acids having from 5 to 10 carbon atoms and an iso-acid having from 6 to 10 carbon atoms, preferably iso-nonanoic acid. The base stock is mixed with a conventional ester lubricant additive package to form a lubricant having a viscosity at 210.degree. F. of at leasts 5.0 centistokes and pour point of at least as low as -65.degree. F. The resulting lubricants have a decreased tendency to form deposits in gas turbine engines.