Synthetic diester lubricating oils containing overbased calcium

Details Synthetic diester lubricating oils containing overbased calcium Synthetic diester lubricating oils containing overbased calcium

1978-04-03

1979-02-06

Vaughn, Irving

Compositions

Electrolytes for electrical devices

252 52A, 252389R, C10M 140, C10M 334, C10M 522, C10M 738

Patent

active

041383478

ABSTRACT:
Small amounts of adducts of nonylphenol and ethylene oxide defined by the general formula: ##STR1## wherein n ranges from 1 to 9.5 are found to have a dispersing and/or solubilizing action on overbased calcium sulfonates in 100 percent synthetic diester base lubricating oils. Best results are obtained where an adduct in which n is 6 is used in an oil comprising essentially di(2-ethylhexyl)azelate.
The concentration of adduct basis oil ranges from about 0.5 weight percent to 1.5 wt. %.

REFERENCES:
patent: 2681315 (1954-06-01), Longberg et al.
patent: 3872048 (1975-03-01), Brown

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