Oil-soluble phosphorus- and nitrogen-containing additives

Details Oil-soluble phosphorus- and nitrogen-containing additives Oil-soluble phosphorus- and nitrogen-containing additives

1995-03-31

1996-03-19

McKane, Joseph K.

Compositions

Electrolytes for electrical devices

252 466, 558158, C10M12520

Patent

active

055001408

ABSTRACT:
Additives are produced by (i) reacting an O,O-dihydrocarbyl phosphorodithioic acid with a monoepoxide or mixture of monoepoxides having in the range of 20 to about 30 carbon atoms in the molecule, (ii) reacting the product with phosphorus pentoxide to produce an acid phosphate intermediate, and (iii) neutralizing the intermediate with at least one amine. At least 50 mole % , and preferably all, of the hydrocarbyl groups of the O,O-dihydrocarbyl phosphorodithioic acid are secondary acyclic hydrocarbyl groups free of acetylenic unsaturation. The balance, if any, of such hydrocarbyl groups are primary acyclic hydrocarbyl groups free of acetylenic unsaturation. The additives are multifunctional in that they have limited slip properties, antiwear/extreme pressure properties, and corrosion inhibiting properties.

REFERENCES:
patent: 3197405 (1965-07-01), LeSuer
patent: 3197496 (1965-07-01), LeSuer
patent: 4155958 (1979-05-01), Fields
patent: 4435338 (1984-03-01), Michaelis et al.
CA91:90647x Beta-phosphosulfoxy alcohols. Fields, p. 696, 1979.

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