Substituted hydroxyaromatic acid esters and lubricants containin

Details Substituted hydroxyaromatic acid esters and lubricants containin Substituted hydroxyaromatic acid esters and lubricants containin

1975-06-16

1978-07-04

Wyman, Daniel E.

Compositions

Electrolytes for electrical devices

252 56R, 560 67, C10M 132

Patent

active

040987086

ABSTRACT:
Esters of alkyl-substituted hydroxyaromatic carboxylic acids (especially alkyl-substituted salicylic acids) and the like, in which the alkyl substituent contains at least about 10 carbon atoms, are useful as dispersant additives for lubricants and fuels. Particularly useful are esters in which the substituent is derived from propylene, 1-butene or isobutene and has a molecular weight of about 150-1750, and in which the alkyl moiety is derived from pentaerythritol. Such esters are preferably prepared by the reaction of the corresponding organic hydroxy compound with a vic-hydroxyalkyl ester of the salicylic acid.

REFERENCES:
patent: 3736357 (1973-05-01), Piasek et al.
patent: 3936480 (1976-02-01), Demoures

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