Coated optically isotropic or monoaxially film of plastic

US4629637A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Werner Waldenrath · Cologne, DE
• Hans-Leo Weber · Eschenried, DE
• Uwe Claussen · Leverkusen, DE

Key dates

• Filing date: Apr 18, 1985
• Grant date: Dec 16, 1986
• Expiry date: Apr 18, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31935
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Optically monoaxial film of plastic which is coated with a product formed by hardening a mixture of a prepolymer, containing at least two (meth)acryloyl groups, and a (meth)acrylic acid ester of a monohydric or polyhydric aliphatic alcohol and/or an aliphatic vinyl compound, and the use of this film in liquid crystal visual displays.