Patent ID: 6180165
Filing Date: 2001-01-30
Classification: C07C,G03C

Abstract:
A process for producing a substantially light-insensitive thermographic recording material substantially exclusive of cationic surfactants in which at least one non-cationic surfactant is present, said thermographic recording material including a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, comprising the steps of: producing an aqueous dispersion of said substantially light-insensitive organic silver salt; producing one or more aqueous coating compositions containing together said aqueous dispersion of the substantially light-insensitive organic silver salt, said reducing agent and said binder; and applying said one or more aqueous coating compositions to said support thereby forming after drying said thermosensitive element, wherein one or more of said aqueous dispersion of said substantially light-insensitive organic silver salt and said one or more aqueous coating compositions aqueous contains a non-cationic surfactant and all said non-cationic surfactants present in the thermographic recording material together have a non-fluoro-halide ion concentration of 1500 ppm or less.