Developing solvent for layers which are crosslinkable by photopolymerization and process for the production of relief forms

US5516623A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Hans-Joachim Schlosser · Wiesbaden, DE
• Guenther Schoen · Wiesbaden, DE

Key dates

• Filing date: Feb 23, 1995
• Grant date: May 14, 1996
• Expiry date: Feb 23, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/325
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention describes a developing solvent for layers which are crosslinkable by photopolymerization and contain a binder based on an elastomeric polymer, a photopolymerizable monomer compatible therewith and a photoinitiator. The developing solvent comprises an aromatic compound of the general formula I ##STR1## wherein R.sup.1 to R.sup.4 are the same or different and denote hydrogen, (C.sub.1 -C.sub.5)n-alkyl or iso-alkyl and R.sup.1 and R.sup.2, provided that R.sup.1 and R.sup.2 are directly adjacent, may also form a cycloaliphatic or aromatic ring having 5 or 6 carbon atoms as ring members which are preferably non-substituted, provided that the sum of carbon atoms of the substituents and ring members is from 9 to 13. Compared with solvents of the prior art, the developing solvent of the present invention is non-toxic, can quickly be removed from the layer, has a high capacity for layer components and is capable of developing plates based on nitrile rubber.