Two-layer system

US4914004A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Manfred Kohler · Bulle, CH
• Eike Poetsch · Mühltal, DE
• Jorg Ohngemach · Reinheim, DE
• Dieter Dorsch · Ober-Ramstadt, DE
• Rudolf Eidenschink · Mainz, DE
• Gerhard Greber · Bischofshofen, AT

Key dates

• Filing date: Aug 28, 1987
• Grant date: Apr 3, 1990
• Expiry date: Aug 28, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S522/905
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Radiation-curable two-layer systems containing immobilized photoinitiators are suitable for the production of coatings of constant thickness and good adhesion, and relief structures of high resolution and edge steepness.