Stabilizer combination for dye oxidation

Details Stabilizer combination for dye oxidation Stabilizer combination for dye oxidation

1982-02-24

1983-12-27

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

Composition or product

430341, 430336, 430340, G03C 152

Patent

active

044231393

ABSTRACT:
Synergistic combinations for use in stabilizing thermographic imaging systems comprise (1) one or more aromatic compounds which form quinones, diimines, or quinonimines upon oxidation in combinaton with (2) 1-phenyl-3-pyrazolidinone, or derivatives or 1-phenyl-3-pyrazolidinone. When used in a thermographic imaging system comprising a nitrate salt, and a leuco dye in a binder these stabilizing combinations prevent oxidation and premature reaction of the leuco dye.

REFERENCES:
patent: 3042515 (1962-07-01), Wainer
patent: 3460964 (1969-08-01), Dunham
patent: 3974147 (1976-08-01), Tiers et al.
patent: 3986880 (1976-10-01), Wainer et al.
patent: 4066459 (1978-01-01), Bachman et al.
L.F.A. Mason "Photographic Processing Chemistry," The Focal Press, London, 15-17, 1966.
Mees and James, "The Theory of the Photographic Process," 3rd ed., pages 283-284 and 390-391.
Kosar, "Light Sensitive Systems," 367 and 370-380, 1965.

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