Patent ID: 6313065
Filing Date: 2001-11-06
Classification: G03C

Abstract:
A substantially light-insensitive black and white mono sheet thermographic recording material comprising a support and a thermosensitive element provided with a protective layer, said thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxy-benzene derivative in thermal working relationship therewith and a polymer having active hydrogen atoms at least part of which has reacted with a polyisocyanate selected from the group consisting of: hexamethylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, naphthylene diisocyanate and triphenylmethane-p, p', p""-trityl triisocyanate; wherein said protective layer being exclusive of fluorine-containing compounds and wherein said thermosensitive element being exclusive of propenenitrile compounds.