Color photographic recording material containing non-diffusing e

Details Color photographic recording material containing non-diffusing e Color photographic recording material containing non-diffusing e

1981-02-17

1982-12-28

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430223, 430242, 430440, 430483, G03C 554, G07C 4962, G09B 5300

Patent

active

043662404

ABSTRACT:
5- or 6-membered .alpha.-lactones of phenolic compounds, in which the phenyl ring carries a hydroxyl or amino group in its 2- or 4-position to the lactonized phenolic hydroxyl group and in which the lactone ring carries an electron accepting substituent, so that the lactone ring is readily cleavable at pH values of from 10 to 13 to form an electron donor compound (ED-compound) having a redox potential of less than +0.255 V determined against a normal calomel electrode at pH 0 are useful ED precursor compounds for non-diffusing reducible color providing compounds.

REFERENCES:
patent: 4139379 (1979-02-01), Chasman

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