Dibenzoxaphosphorin compounds

Details Dibenzoxaphosphorin compounds Dibenzoxaphosphorin compounds

1986-11-18

1988-03-22

Sutto, Anton H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

558 82, C07F 908

Patent

active

047329971

ABSTRACT:
Photographic material containing magenta coupler is stabilized by incorporating a dibenzoxaphosphorin of the formula ##STR1## into the emulsion layer containing the coupler or into an adjoining colloid layer. The yellowing on dark storage of such material is substantially reduced as a result.
The symbols A and n are defined in claim 1.

REFERENCES:
patent: 4185006 (1980-01-01), Rasberger et al.
patent: 4276232 (1981-06-01), Rasberger
patent: 4407935 (1983-10-01), Fryberg et al.

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