Compositions – Electrolytes for electrical devices
Patent
1988-12-15
1990-10-16
Chaudhuri, Olik
Compositions
Electrolytes for electrical devices
252 482, 252 486, 252 488, 252 50, 252 781, 252404, 252405, 252406, C10M13526, C10M13528
Patent
active
049632760
ABSTRACT:
Composition containing at least one lubricant, for example based on mineral oils, synthetic oils or mixtures thereof or a hydraulic fluid and a mixture of one or more compounds from series (A) and one or more compounds from series (B), the compounds of series (A) having the general formula ##STR1## and the compounds of series (B) having the general formula ##STR2## in which the radicals R.sup.1 and R.sup.1 ' are, for example, --H or alkyl having 1 to 24 C atoms and n is 0, 1 or 2, R.sup.2 and R.sup.3 are, for example, --H, alkyl having 1 to 24 C atoms or phenyl or R.sup.2 and R.sup.3 together are an alkylene group, and R.sup.4 is, for example, an alkyl group having 4-18 C atoms or a radical ##STR3## in which R.sup.5 can be an alkyl group, and R.sup.4' is an alkylene group and Y is O or S. The mixture imparts a high stability towards oxidative degradation to lubricant compositions.
REFERENCES:
patent: 3041284 (1962-06-01), Calhoun et al.
patent: 3944492 (1976-03-01), Wheeler
patent: 4248723 (1981-02-01), Schmidt
patent: 4394279 (1983-07-01), de Vries et al.
patent: 4704219 (1987-11-01), Shaw
patent: 4737300 (1988-04-01), Wirth et al.
Chaudhuri Olik
Ciba-Geigy Corporation
McAvoy Ellen
O'Brien Stephen V.
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