Thio-bis-(alkyl lactone acid esters) and thio-bis-(hydrocarbyl d

Details Thio-bis-(alkyl lactone acid esters) and thio-bis-(hydrocarbyl d Thio-bis-(alkyl lactone acid esters) and thio-bis-(hydrocarbyl d

1978-10-23

1980-12-16

Metz, Andrew

Compositions

Electrolytes for electrical devices

C10M 138

Patent

active

042396360

ABSTRACT:
Thio-bis-(hydrocarbyl substituted diacid materials), such as thio-bis-(polyalkyl lactone acid) and/or their precursors, the adducts of sulfur chloride and unsaturated diacid materials, e.g., 4,8-bis-polyalkyl-4,8-dichloro-6-thiaundecane-1,2,10,11-tetracarboxylic acid bis-anhydride and their dehydrochlorinated analogs, when esterified with an alcohol, preferably a polyol, such as pentaerythritol, polypentaerythritol or a polyalkylene glycol with or without acid catalysts and/or metal template reagents yield thio-bis-(alkyl lactone acid esters) and thio-bis-(hydrocarbyl diacid esters) which can be characterized in part, as macrocyclic and/or macrocyclic-like structures, are useful as stable additives in lubricating compositions, e.g. as varnish inhibiting dispersants for lubricating oils and fuels.

REFERENCES:
patent: 2649416 (1953-08-01), Richter et al.
patent: 3234131 (1966-02-01), Morway
patent: 3247109 (1966-04-01), Benoit, Jr.
patent: 3256187 (1966-06-01), Davis
patent: 3299121 (1967-01-01), Vineyard
patent: 3314888 (1967-04-01), Matson

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