Multilayer structures containing biopolymers

US10518508B2 · kind B2 · utility

Assignee

• ARKEMA FRANCE · FR

Inventors

• Florence Mehlmann · King of Prussia, US
• Robert John Barsotti · Drexel Hill, US
• Charles C. Crabb · Royersford, US
• Thomas H. Richards · Forest Park, US
• Steven B. Lacock · Boyertown, US
• Mark A. Aubart · West Chester, US
• Adam N. Toft · Norristown, US

Key dates

• Filing date: Jul 26, 2013
• Grant date: Dec 31, 2019
• Expiry date: Jul 26, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31928
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a multi-layer structure having at least one inner layer containing an alloy of a biopolymer and an acrylic polymer and at least one outer layer containing a thermoplastic or thermoset polar polymer matrix. The combination of outer polar layer and an inner biopolymer/acrylic layer provides improved properties, such as improved adhesion, and improved mechanical properties. The multi-layer structure may be in the form of a sheet, a film, a tube or pipe, or a profile, and could be used by itself or as a cap-layer over a substrate.