Thermal diazo composition

Details Thermal diazo composition Thermal diazo composition

1985-12-05

1987-11-10

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430160, 430162, 430176, 430177, G03C 160, G03C 152, G03C 158

Patent

active

047057360

ABSTRACT:
A diazotype sheet is developable solely by heat, the sheet comprising in at least one layer a heat-softenable, organic solvent-soluble resin, an acid-stabilized diazonium salt, at least one azo-coupler compound capable of reacting to form a dye, and an acid neutralizing component immobilized either by encapsulation or by coating as a separate layer with or without a binder. The sheet has incorporated therein at least one plasticizer which is either liquid at room temperature (i.e., 20.degree. to 25.degree. C.) or fusible at a temperature between room temperature and the development temperature.

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