Process of preparing light-sensitive naphthoquinonediazidesulfonic acid ester

US4555469A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Fritz Erdmann · Eltville am Rhein, DE
• Ulrich Simon · Kahla, DE

Key dates

• Filing date: Oct 14, 1983
• Grant date: Nov 26, 1985
• Expiry date: Oct 14, 2003

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/023
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A light-sensitive mixture comprising a water-insoluble binder soluble in aqueous alkaline solutions, and the reaction product of a naphthoquinonediazidesulfonyl halide with a mixture composed of a low molecular weight compound having a definite structure and molecular size containing at least one phenolic hydroxyl group, and of a polymeric compound having recurring units, each of which contains at least one phenolic hydroxyl group. The mixture is useful in producing printing plates and photoresists and has the advantage that the naphthoquinonediazidesulfonic acid ester contained therein is non-explosive.