Optically non-linear polymeric coatings

US5447662A · kind A · utility

Assignee

• Hoffmann-La Roche Inc. · US

Inventors

• Rolf-Peter Herr · Glückstadt, DE
• Martin Schadt · Seltisberg, CH
• Klaus Schmitt · Lörrach, DE

Key dates

• Filing date: Dec 18, 1991
• Grant date: Sep 5, 1995
• Expiry date: Dec 18, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/146
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polymeric coatings having optically non-linear or optically anisotropic properties in selected areas and of any arbitrary shape including a pattern. These zones are sharply defined from surfaces having centro-symmetrical or isotropic configurations or from surfaces with different optically non-linear or anisotropic properties. The polymeric coating has optically non-linear and/or mesogenic side chains, selected surface areas of which are cross-linked by the action of light, the zones which have optically non-linear or anisotropic properties being subjected to the influence or orienting fields or forces during the cross-linking process. The distances between optically different zones are limited to typically about 1 .mu.m.