Light-sensitive copying material and method for the production of colored relief images

Claim 1

In a light-sensitive copying material, the copying layer of which comprises a water-soluble, curable binder and a diazonium salt polycondensation product of recurring units of the general types (A-N.sub.2 X) 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 reaction, in which A is the radical of a compound of the formula (R.sub.1 -R.sub.3 -).sub.p R.sub.2 -N.sub.2 X wherein X denotes the anion of an acid which forms a water-soluble salt with the condensation product, p denotes an integer from 1 to 3, R 1 denotes an aromatic radical with at least one position capable of entering into a condensation reaction, R 2 denotes a phenylene group which is unsubstituted or substituted by halogen atoms or carboxyl, sulfonyl, alkyl or alkoxy groups, and R 3 denotes a single bond or one of the groups: --(CH 2 ) q --NR 4 -- --o--(ch 2 ) r --NR 4 -- --s--(ch 2 ) r --NR 4 -- --s--ch 2 co--nr 4 -- --o--r 5 --o-- --o-- --s-- or --CO--NR 4 --, in which q is a number from 0 to 5, r is a number from 2 to 5, R 4 is hydrogen, an alkyl group with 1 to 5 carbon atoms, an aralkyl group with 7 to 12 carbon atoms or an aryl group with 6 to 12 carbon atoms, and R 5 is an arylene group with 6 to 12 carbon atoms, and 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, which compound is selected from the group consisting of aromtic amines, phenols, thiophenols, phenol ethers, aromatic thioethers, aromatic hydrocarbons, aromatic heterocyclic compounds and organic acid amides, the improvement that fish glue is the water-soluble, curable binder.