G - Physics – 03 – C
Patent
G - Physics
03
C
96/161, 96/269
G03C 5/00 (2006.01) G03F 3/10 (2006.01) G03F 7/021 (2006.01)
Patent
CA 1111697
Abstract of the Disclosure This invention relates to an improvement in a tight-sensitive copying material the copying layer of which comprises a water-soluble, curable binder and a diazonium salt polycondensation product of recurr- ing units of the general types (A-N2X) and (B) which are linked to one another by intermediate members which have two bonds and are derived from a carbonyl compound capable of undergoing a condensation reac- tion wherein A is the radical of a compound which contains at least two isocyclic or heterocyclic aromatic rings and is able to undergo a con- densation reaction, at least at one point in the molecule, with formalde- hyde in an acid medium B is the radical of a compound which is free of diazonium groups and is able to undergo a condensation reaction, at least at one point in the molecule, with formaldehyde In an acid medium, and X is the union of an acid which forms a watsr-soluble salt with the con- densation product, the improvement being that fish glue Is the water- soluble, curable binder. The invention also relates to a process for the production of colored relief images.
285060
Ruckert Hans
Unholz Rainer
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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