Heat bleachable dye systems

Radiation imagery chemistry: process – composition – or product th – Dye image from radiation sensitive dye or dye former by dry... – Composition or product

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430517, 430522, 430618, 430619, 430620, 428913, G03C 102, G03C 172

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active

045943125

ABSTRACT:
Photothermographic elements containing heat bleachable acutance/antihalation dyes and thermographic elements employing heat bleachable dyes of the formula: ##STR1## in which: n is 2, 3, 4 or 5,

REFERENCES:
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patent: 3745009 (1973-07-01), Jenkins et al.
patent: 3852093 (1974-12-01), O'Leary
J. C. McGowan--The Preparation of Bases from the Coloured Compounds Formed by Condensation of Furfuraldehyde with Aromatic Amines, pp. 777-779 (1949).
Elliot N. Marvell et al.--Formation of Phenylpyridinium Chloride from 5-5-Anilino-N-Phenyl-2,4-Pentadienylidenimium Chloride in Acidic Media, pp. 2089-2092, Tetrahedron Letters No. 23, Pergamon Press.
K. G. Lewis et al.--Aspects of the Formation and Use of Stenhouse Salts and Related Compounds, pp. 463-475, Tetrahedron Report No. 26, Pergamon Press.
Journal of American Chemical Society, vol. 72, May 1950.
Chao-Tung Chen et al.--Dyes Derived from Furfural, Aniline, and Organic Acids--pp. 49-60.
Elliot N. Marvell et al.--Formation of Phenylpyridinium Chloride from 5-Anilino-N-Phenyl-2,4-Pentadienylideniminium Chloride, Kinetics in Basic Media, pp. 5641-5649.
Elliot N. Marvell--Mechanism of the Formation of Phenylpyridinium Chloride From 1,7-Dipenyl-1,7-Diazahepta-1,3,5-Triene-pp. 277-280, Tetrahedron Letters No. 3, Pergamon Press Ltd.

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