Method of making biodegradable polymer compositions

US6630543B1 · kind B1 · utility

Assignees

• Biotechnology Research and Development Corporation · US
• The United States of America, as represented by the Secretary of Agriculture · US

Inventors

• William M. Doane · Morton, US
• Wayne Xu · Westerville, US
• Michael N. Mang · Midland, US
• Jerry E. White · Lake Jackson, US
• Julious L. Willett · Morton, US

Key dates

• Filing date: May 30, 2001
• Grant date: Oct 7, 2003
• Expiry date: May 30, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L3/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method of making a biodegradable polymer composition including the steps of providing a first component being either one of a thermoplastic poly(hydroxy ester ether) or a synthetic, hydroxy-functional polymer and providing a second component being a natural polymer. The method includes the steps of mixing the first component and second component together to form a mixture, compounding the mixture, and pelletizing the compounded mixture to form pellets of a biodegradable polymer composition.