High stability and low metals esters based on 3,5,5-trimethyl-1-

Details High stability and low metals esters based on 3,5,5-trimethyl-1- High stability and low metals esters based on 3,5,5-trimethyl-1-

1996-01-16

1998-08-25

Kelly, C. H.

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507139, 507100, 507116, 508478, 508482, 508496, 508498, C09K 700, C10M10532

Patent

active

057983194

ABSTRACT:
A lubricant which is prepared from at least one synthetic ester composition exhibiting thermal and oxidative stability which comprises the reaction product of 3,5,5-trimethyl-1-hexanol and an acid or anhydride; and a lubricant additive package; whereby the incorporation of an antioxidant in the lubricant additive package for the purpose of maintaining oxidative and thermal stability of the crankcase lubricating oil formulation to at least 20 minutes as measured by HPDSC at 220.degree. C., 3.445 MPa air and 0.5 wt. % dioctyl diphenyl amine can be either reduced or eliminated. The synthetic ester composition preferably exhibits the following additional properties: a metals content of 10 ppm or less metals based on the total synthetic ester composition, an ash content of 15 ppm or less ash based on the total synthetic ester composition, a total acid number of 0.05 mg KOH/g or less, and a volume resistivity of at least about 1.times.10.sup.11 ohm cm.

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Database Crossfire--Beilstein Informationssysteme GmbH, BRN-3429005; XP002031015; see abstract & Ind. Eng. Chem, vol. 41, 1949, pp. 2860-2861, Bruner.

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