Vinylcyclohexane-based block copolymers

US6492468B1 · kind B1 · utility

Assignees

• BAYER HEALTHCARE LLC · DE
• TEIJIN LIMITED · JP

Inventors

• Yun Chen · Krefeld, DE
• Friedrich-Karl Bruder · Krefeld, DE
• Volker Wege · Neuss, DE
• Konstadinos Douzinas · Recklinghausen, DE
• Ralf Dujardin · Willich, DE

Key dates

• Filing date: May 22, 2001
• Grant date: Dec 10, 2002
• Expiry date: May 22, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B11/10586
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

The present invention relates to block copolymers which are predominantly based on vinylcyclohexane and to a process for producing them. The block copolymers can be processed to form mouldings by extrusion or injection moulding. The mouldings which result therefrom are distinguished by their high resistance to thermal deformation, good mechanical properties, high transparency in the visible and near UV range, and by their particularly low birefringence and water absorption.