Antioxidants for low ash and medium ash lubricating oils

Details Antioxidants for low ash and medium ash lubricating oils Antioxidants for low ash and medium ash lubricating oils

1977-12-23

1979-05-08

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

252400A, 260137, 260934, C10M 148

Patent

active

041535626

ABSTRACT:
Highly effective antioxidants that are particularly useful in crankcase lubricating oil formulations of relatively low ash content are prepared by the condensation of phosphorodithioates of alkyl phenol sulfides with compounds having activated double bonds, particularly with styrene, alkyl styrenes, highly reactive olefins, vinyl esters and acrylate esters.

REFERENCES:
patent: 2226334 (1940-12-01), Cantrell et al.
patent: 2226336 (1940-12-01), Cantrell et al.
patent: 2253228 (1941-08-01), Cantrell et al.
patent: 2357211 (1944-08-01), Lincoln et al.
patent: 2619482 (1952-11-01), Beare et al.
patent: 2665295 (1954-01-01), Augustine
patent: 3135692 (1964-06-01), Kjonaas
patent: 3145176 (1964-08-01), Knapp et al.
patent: 3310491 (1967-03-01), Jones et al.
patent: 3558490 (1971-01-01), Lowe

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