Radiation imagery chemistry: process – composition – or product th – Thermographic process – Heat applied after imaging
Patent
1982-09-30
1983-11-29
Brown, J. Travis
Radiation imagery chemistry: process, composition, or product th
Thermographic process
Heat applied after imaging
430203, 430496, 430523, 430564, 430961, G03C 524
Patent
active
044181396
ABSTRACT:
Solid compositions are disclosed comprising a complex of water; a benzotriazole of the formula ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, a monovalent organic radical, halogen, or nitro; and at least one water-soluble base having a basicity greater than that of the benzotriazole and capable of dissociating to provide an anion and a monovalent or divalent metal cation. The compositions have melting ranges above 35.degree. C. and are capable of releasing a substantial portion of the water contained therein to the surrounding environment when melted. The compositions can be employed in thermally developable photographic film units as thermally induced water-releasing materials which provide water to the internal environment of the film unit when the film unit is heated sufficiently to melt the composition.
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Eckert Robert D.
Rogers Howard G.
Sahatjian Ronald A.
Sulesky Robert A.
Brown J. Travis
Polaroid Corporation
Xiarhos Louis G.
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