Photographically useful chalcogenazolium polymethine dyes

Details Photographically useful chalcogenazolium polymethine dyes Photographically useful chalcogenazolium polymethine dyes

1985-02-19

1986-03-11

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430570, 430578, 430581, 430592, G03C 102

Patent

active

045754837

ABSTRACT:
Polymethine dyes are disclosed containing a tellurazolium nucleus which is substituted at its 2-position with methine chain which is in turn substituted at its .beta. position with a dye property modifier. These dyes can be used in photographic elements to facilitate image formation.

REFERENCES:
patent: 2323503 (1943-07-01), Wilson
patent: 2339094 (1944-01-01), Middleton
patent: 4115122 (1978-09-01), Adachi et al.
patent: 4239284 (1982-05-01), Detty et al.
patent: 4272614 (1981-06-01), Mifune et al.
patent: 4365016 (1982-12-01), Detty et al.
patent: 4365017 (1982-12-01), Detty et al.
patent: 4451557 (1984-05-01), Lok et al.
patent: 4471044 (1984-09-01), Parton et al.
"Un Nouvel Heterocycle Tellure: le Benzisotellurazole-1,2", Campsteyn et al., Journal of Heterocyclic Chemistry, vol. 15, Aug. 1978, pp. 745-748.
U.S. Ser. No. 660,155, filed Oct. 12, 1984, commonly assigned, entitled Photographically Useful Chalcogenazoles, Chalcogenazolines, and Chalcogenazolinium and Chalcogenazolium Salts.

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