Naphthalide indicator dyes

Details Naphthalide indicator dyes Naphthalide indicator dyes

1974-11-04

1977-03-01

Sutto, Anton H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603434, C07D30514

Patent

active

040101681

ABSTRACT:
This invention relates to 1-naphthol (na)phthalide indicator dyes substituted with a particular class of hydrogen bonding groups, such as, perhaloalkyl carbinols. These dyes are useful as optical filter agents in photographic processes to protect a selectively exposed photosensitive material from further exposure during processing in the presence of incident light.

REFERENCES:
patent: 3772338 (1973-11-01), Greenwald
patent: 3772339 (1973-11-01), Greenwald
patent: 3833615 (1974-09-01), Simon et al.

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