Process for preparing superalkalinized detergent-dispersant addi

Details Process for preparing superalkalinized detergent-dispersant addi Process for preparing superalkalinized detergent-dispersant addi

1988-09-20

1991-07-30

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 39, 252 40, C10M13506

Patent

active

050358162

ABSTRACT:
A process for preparing alkylsalicylate superalkalinized detergent-dispersant lubricating oil additives: (a) by the acid catalyzed neutralization of C.sub.12 -C.sub.30 alkylphenol with alkaline earth base in the presence of an azeotropic solvent for the water of reaction; (b) by the carboxylation of the first product with CO.sub.2 to partially convert the alkylphenate to alkylsalicylate; and (c) by sulfurization-superalkalinization of the product in the presence of sulfur, alkaline earth base, azeotropic solvent and added CO.sub.2.

REFERENCES:
patent: 3036971 (1962-05-01), Otto
patent: 3372116 (1968-03-01), Meinhardt
patent: 3410798 (1968-11-01), Cohen
patent: 3437595 (1969-04-01), Coupland
patent: 3493516 (1970-02-01), Allphin
patent: 3595791 (1971-07-01), Cohen
patent: 4751010 (1988-06-01), Leone

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