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:
Dec. 10, 1996
Filed:
Dec. 22, 1995
Jeenok T Kim, Holmdel, NJ (US);
Richard S Polizzotti, Milford, NJ (US);
Stanley J Brois, Westfield, NJ (US);
Stephen D Cameron, Milford, NJ (US);
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additive of the present invention is alkylthiosuccinic acid, preferably C.sub.4 -C.sub.12 linear alkyl thiosuccinic acid and the P-containing additive is one or more amine phosphate(s). The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than or equivalent to that obtained when each additive was used alone at a comparable treat rate to the total P/S additive combination treat rate, and this lower concentration requirement of the P and S additives allows the turbo oil composition to meet or exceed US Navy MIL-L-23699 requirements including Oxidation and Corrosion Stability and Si seal compatibility.