Polyimide, polyisoindoloquinazoline dione, polyoxazine dione and polyquinazoline dione precursor stages and the manufacture

US4385165A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Hellmut Ahne · Königsee, DE
• Eberhard Kuhn · Hemhofen, DE
• Roland Rubner · Königsee, DE

Key dates

• Filing date: Aug 19, 1980
• Grant date: May 24, 1983
• Expiry date: Aug 19, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L79/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to oligomeric and/or polymeric radiation-reactive precursor stages of polyimides, polyisoindoloquinazoline diones, polyoxazine diones and polyquinazoline diones as well as to a method for the preparation of these radiation-reactive precursor stages. The invention provides addition products of olefinically unsaturated monoepoxides on carboxyl group-containing polyaddition products of aromatic and/or heterocyclic tetracarboxylic-acid dianhydrides and diamino compounds or diamino compounds with at least one ortho-position amido group, or on carboxyl group-containing polyaddition products of aromatic and/or heterocyclic dihdyroxy dicarboxylic acids or corresponding diaminodicarboxylic acids and diisocyanates. The radiation-reactive precursor stages according to the invention are suitable, for example, for the manufacture of highly heat-resistant relief structures.