Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1977-09-23
1980-10-14
Daus, Donald G.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
544 35, 544 62, 544 95, 544 98, 544133, 544135, 544368, 544 586, 544 587, 546 94, 546198, 548207, C07D27506, C07D41710, C07D27902, C09B 1704
Patent
active
042280753
ABSTRACT:
This invention relates to phenol sulfam(na)phthaleins possessing a ##STR1## group wherein R is selected from lower alkyl and phenyl, unsubstituted or substituted with at least one electron-withdrawing group on the N atom of the sulfam(na)phthalein ring, which compounds find utility as photographic optical filter agents and filter agent precursors.
REFERENCES:
patent: 3702244 (1972-11-01), Bloom et al.
Dutt; S. J. Chem. Soc., 121, pp. 2389-2394 (1922).
Abramovitch, R. J. Chem. Soc. Perkin Translation I, 22 pp. 2589-2594 (1974).
Bloom Stanley M.
Borror Alan L.
Foley James W.
Campbell Sybil A.
Daus Donald G.
Jones Lisa
Polaroid Corporation
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