Compositions – Electrolytes for electrical devices
Patent
1973-07-26
1977-12-20
Gantz, Delbert E.
Compositions
Electrolytes for electrical devices
C10M 124
Patent
active
040640582
ABSTRACT:
Disclosed is a grease base stock characterized by outstanding thermal and oxidation stability, low volatility, and high viscosity index. It comprises a blend of (1) a normally liquid pentaerythritol ester product consisting essentially of pentaerythritol material selected from the group consisting of pentaerythritol and polypentaerythritols, completely esterified by C.sub.4 -C.sub.12 alkanoic acid material, and (2) a neopentyl glycol ester product having a substantially higher 77.degree. F. viscosity than the pentaerythritol ester product and consisting essentially of the reaction product of neopentyl glycol, C.sub.4 -C.sub.12 alkanedioic acid material and C.sub.4 -C.sub.12 alkanol material substantially at mole ratios of n:(n+1):2, n being a whole number in the range from 1 to 12. The weight ratio of the pentaerythritol ester product to the neopentyl glycol ester product is generally in a range from about 2:3 to about 9:1.
REFERENCES:
patent: 2448567 (1948-09-01), Zisman
patent: 2782166 (1957-02-01), Kolfenbach et al.
patent: 3278586 (1966-10-01), Ovist
patent: 3360465 (1967-12-01), Warman
patent: 3505230 (1970-04-01), Thompson
patent: 3562300 (1971-02-01), Chao et al.
Gantz Delbert E.
Hercules Incorporated
Hopkins George H.
Metz Andrew H.
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