Polyimides based on diamines containing cycloaliphatic units

US5496915A · kind A · utility

Assignee

• BASF SE

Inventors

• Christian Fischer · Waldbronn, DE
• Karin Elbl-Weiser · Schriesheim, DE
• Ju/ rgen Koch · Schifferstadt, DE

Key dates

• Filing date: Feb 13, 1995
• Grant date: Mar 5, 1996
• Expiry date: Feb 13, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31721
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyimides are obtainable by reacting a dianhydride component with a diamine component, at least one diamine containing cycloaliphatic units, with the proviso that the dianhydride component is a mixture of different dianhydrides if the diamine component consists only of one diamine containing cycloaliphatic units and the diamine component is a mixture of different diamines if the dianhydride component consists of only one dianhydride.