Process for the production of cast films from polyaryl sulphone/polycarbonate mixtures

US4343756A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Leo Weber · Eschenried, DE
• Eckart Reese · Dormagen, DE
• Hans Kaloff · Neuss, DE
• Hans Fausten · Bad Sobernheim, DE

Key dates

• Filing date: Nov 17, 1980
• Grant date: Aug 10, 1982
• Expiry date: Nov 17, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/906
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Mixtures of polyaryl sulphones and polycarbonates solutions made stable by the introduction of solubilizing agents are used to prepare cast films of improved properties.