Title: Fire-resistant hydraulic fluid

Abstract: A water-in-oil emulsion finding use as a stable functional fluid comprises about 19 to about 50 weight percent water, about 80 to about 49 weight percent mineral oil and a small amount of a hydrocarbyl-substituted succinic acid mono ester of a polyoxyethylene mono-ol. The mono-ol has an average molecular weight of about 200-1,000 and the hydrocarbyl substituent is from about 750 to about 2,000 average molecular weight.

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Inventors: Goldschmidt, Alfred (El Cerrito, CA, US)
Stayner, Robert A. (Lafayette, CA, US)

Application Number: 454638
Filing Date: 1974-03-25
Publication_date: 1976-02-17
Assignee: Chevron Research Company (San Francisco, CA)
Primary Class(es): 252/79 252/76, 508/497, 516/29
Other Classes:
US Patent Ref:

3255108	Jun, 1966	Wiese	252/49.
3525693	Aug, 1970	Lyle et al.	252/56.
3838052	Sep, 1974	Miller	252/56.

Other Refs:
Primary Examiner: Pitlick, Harris A.
Assistant Examiner:
Attorney: Magdeburger; G. F., Tonkin; C. J., Brooks; J. T.