Magnesium oxide process

Details Magnesium oxide process Magnesium oxide process

1973-11-30

1977-12-27

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

252 18, 252 33, C10M 140

Patent

active

040653960

ABSTRACT:
It has been discovered that, whereas magnesium oxide of commerce, usually made by roasting hydrated magnesia, is inert to the action of CO.sub.2 and methanol, when the oxide is made by roasting magnesium carbonate at a critical temperature in the range of 600.degree.-1200.degree. F., it dissolves rapidly in anhydrous methanol under CO.sub.2 pressure, to form a methylate-carbonate. The complex can be emulsified with lubricating oil in the presence of an oil soluble surface active agent, particularly magnesium mahogany sulfonate, to produce an additive for lubricating oil having a high alkali value in the range of 100-400 mg. KOH per gram.

REFERENCES:
patent: 2839470 (1958-06-01), Warren et al.
patent: 3155616 (1964-11-01), Vorhees
patent: 3262880 (1966-07-01), Vorhees
patent: 3384585 (1968-05-01), Gragson et al.
patent: 3629109 (1971-12-01), Gergel et al.
patent: 3865737 (1975-02-01), Kemp
Hackh's Chemical Dictionary, 1969, p. 402, "Magnesium Oxide".

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