Photosensitive mixture and photosensitive recording material with diazonium salt polycondensation product and free radical radiation polymerizable composition

US4659645A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hans-Dieter Frommeld · Wiesbaden, DE
• Walter Lutz · Wertheim, DE
• Hartmut Steppan · Wiesbaden, DE

Key dates

• Filing date: Jul 9, 1985
• Grant date: Apr 21, 1987
• Expiry date: Jul 9, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/016
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A photosensitive mixture comprised of PA0 (a) a diazonium salt polycondensation product comprising recurring units of the formulas A--N.sub.2 X and B, which units are linked by bivalent intermediate members derived from a carbonyl compound which is capable of condensation, wherein the A--N.sub.2 X units are derived from aromatic diazonium compounds that are capable of condensation with formaldehyde, and the B units are derived from compounds which are free from diazonium groups and are also capable of condensation with formaldehyde in a strongly acidic medium; PA0 (b) a compound which can be polymerized by a free-radical process; PA0 (c) a photopolymerization initiator; and PA0 (d) a polymeric binder that is insoluble in water, but soluble in organic solvents can be used in the production of photosensitive printing plates and photoresists.