Antihalation and filter dyes for photographic materials

Details Antihalation and filter dyes for photographic materials Antihalation and filter dyes for photographic materials

1975-11-04

1976-10-05

Brammer, Jack P.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

260310A, 2602402, G03C 184, C09B 2300, C07D23100

Patent

active

039842460

ABSTRACT:
Photographic materials containing in at least one photographic layer as antihalation- or filter-dyes mono-, tri- or pentamethineoxonoles of 1-sulfolanyl pyrazolones, which dyes can be easily decolorized and washed out on treatment of the photographic material in photographic processing.

REFERENCES:
patent: 2274782 (1942-03-01), Gaspar
patent: 3647460 (1972-03-01), Hofman et al.
patent: 3726682 (1973-04-01), Paesschen et al.
patent: 3795519 (1974-03-01), Miyazako et al.
patent: 3865817 (1975-02-01), Kobayaski et al.
patent: 3932188 (1976-01-01), Tanaka et al.

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