Light-sensitive, diazonium group-containing polycondensation product, process for its production, and light-sensitive recording material containing this polycondensation product

US4661432A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Lutz · Wertheim, DE
• Hartmut Steppan · Wiesbaden, DE

Key dates

• Filing date: Jan 23, 1986
• Grant date: Apr 28, 1987
• Expiry date: Jan 23, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G61/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A light-sensitive, diazonium group-containing polycondensation product is described which comprises PA0 (a) an optionally substituted diphenylamine-dianzonium salt I. PA0 (b) a compound corresponding to the formula II EQU R.sup.4 --O--CH.sub.2 --R.sup.5 (II) PA0 wherein PA1 R.sup.4 is H, alkyl or acyl, and PA1 R.sup.5 is an optionally substituted aromatic radical, and PA0 (c) a compound corresponding to the formula III EQU R.sup.6 --O--CH.sub.2 --R.sup.8 --CH.sub.2 --O--R.sup.7 (III) PA0 wherein PA1 R.sup.6 and R.sup.7 are H, alkyl, or acyl and PA1 R.sup.8 is the radical of a compound selected from the group consisting of aromatic hydrocarbons, phenols, phenolethers, aromatic thioethers, aromatic heterocyclic compounds, and organic acid amides, with the radicals resulting from compound II being directing linked to the units of the diazonium salt I. In the production of the polycondensation product, I is first condensed with II and then with III. The product is suitable for use as a light-sensitive substance in recording materials, particularly in printing plates, and yields light-hardening products which have an increased oleophilicity.