Thick polyimide-metal laminates with high peel strength

US4522880A · kind A · utility

Assignee

• Akzona Incorporated · US

Inventors

• Werner Klostermeier · Dippoldiswalde, DE
• Jeffery D. Lasher · Tolland, US
• Gerhard Meyer · Erlangen, DE
• Hans Zengel · Kleinwallstadt, DE

Key dates

• Filing date: Sep 21, 1983
• Grant date: Jun 11, 1985
• Expiry date: Sep 21, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31721
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A laminate comprising an insoluble, intractable relatively thick layer of a polyimide bonded tightly onto a metallic substrate without the necessity for an intermediate adhesive bonding layer and a process for preparing such by directly extruding a polyamic acid polyimide-precursor onto said substrate and converting said polyamic acid to the polyimide in a single pass in at least two heating stages.