Dithiophosphonates, their preparation and use as anti-oxidants

Details Dithiophosphonates, their preparation and use as anti-oxidants Dithiophosphonates, their preparation and use as anti-oxidants

1989-12-19

1991-11-12

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524132, 524134, 524137, C08K 55398

Patent

active

050648861

ABSTRACT:
Certain novel dithiophosphonate derivatives, particularly monoesters, may be prepared inexpensively from hindered phenol compounds and are useful as anti-oxidants for example in lubricants and/or polymer materials.

REFERENCES:
patent: 3293208 (1966-12-01), Millionis et al.
patent: 3310575 (1967-03-01), Spivack
patent: 3347790 (1967-10-01), Meinhardt
patent: 3401185 (1968-09-01), Meinhardt
patent: 3558747 (1971-01-01), Meltsner
patent: 3801681 (1974-04-01), Grayson
patent: 4076690 (1978-02-01), Rosenberger
patent: 4778840 (1988-10-01), Linhart et al.
patent: 4900852 (1990-02-01), Colclough et al.

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