Oil-soluble phosphorus- and nitrogen-containing additives

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

1996-02-29

1996-11-12

Howard, Jacqueline V.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Compound of indeterminate structure, prepared by reacting a...

554 84, C10M12520

Patent

active

055736963

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 or a vegetable oil epoxide such as epoxidized soybean oil or methyl epoxy soyate, (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 additives are multifunctional in that they have limited slip properties, antiwear/extreme pressure properties, and corrosion inhibiting properties.

REFERENCES:
patent: 3197405 (1965-07-01), Le Suer
patent: 3197496 (1965-07-01), Le Suer
patent: 4155958 (1979-05-01), Fields
patent: 4435338 (1984-03-01), Michaelis et al.

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