Homogeneous compositions prepared from dimercaptothiadiazoles

Details Homogeneous compositions prepared from dimercaptothiadiazoles Homogeneous compositions prepared from dimercaptothiadiazoles

1974-05-16

1979-01-23

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

252 47, 252391, C10M 138

Patent

active

041360435

ABSTRACT:
Compositions which form homogeneous blends with lubricating oils and the like are produced by preparing a mixture of an oil-soluble dispersant (preferably a substantially neutral or acidic carboxylic dispersant) and a dimercaptothiadiazole, preferably 2,5-dimercapto-1,3,4-thiadiazole, usually with a diluent, especially a lubricant base liquid, and heating said mixture above about 100.degree. C. The compositions often contain dimercaptothiadiazole moieties in amounts substantially greater than stoichiometric. They are useful for suppression of copper activity and "lead paint" deposition in lubricants.

REFERENCES:
patent: 2157380 (1939-05-01), Abrams
patent: 2764547 (1956-09-01), Fields
patent: 2844541 (1958-07-01), Work
patent: 2910439 (1959-10-01), Fields
patent: 3032430 (1962-05-01), Heller
patent: 3219666 (1965-11-01), Norman et al.
patent: 3533943 (1970-10-01), Papay
patent: 3775321 (1973-11-01), Turnquest et al.
patent: 3840549 (1974-10-01), Blaha et al.

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