Consolidated polymer film

US12065551B2 · kind B2 · utility

Assignee

• DUPONT ELECTRONICS, INC. · US

Inventors

• Leopoldo Alejandro Carbajal · Newark, US
• Mark Allan Lamontia · Landenberg, US
• Ross S. Johnson · Hudsonville, US
• Kostantinos Kourtakis · Media, US
• Aref Samadidooki · Wilmington, US
• Mobin Yahyazadehfar · West Chester, US
• Heidi Elizabeth Burch · Parkersburg, US

Key dates

• Filing date: Oct 4, 2021
• Grant date: Aug 20, 2024
• Expiry date: Aug 31, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/192
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

In a first aspect, a consolidated polymer film includes a first polymer layer having a first elastic modulus, wherein the first polymer layer comprises a non-melt-processible polymer comprising a polyimide, a poly(amide-imide), a block copolymer of a polyimide or a poly(amide-imide) or a mixture thereof, and a second polymer layer having a second elastic modulus, wherein the second polymer layer comprises a polyimide, a poly(amide-imide), a block copolymer of a polyimide or a poly(amide-imide) or a mixture thereof. A minor surface of the first polymer layer is in contact with a minor surface of the second polymer layer. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation.