High barrier amorphous polyamide-clay nanocomposite and a process for preparing same

US6417262B1 · kind B1 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• Sam Richard Turner · Kingsport, US
• Gary Wayne Connell · Church Hill, US
• John Walker Gilmer · Kingsport, US
• Vasiliki Psihogios · Wheeling, US
• James C. Matayabas, Jr. · Chandler, US
• Tie Lan · Lake Zurich, US
• Shriram Bagrodia · Kingsport, US

Key dates

• Filing date: Dec 1, 1999
• Grant date: Jul 9, 2002
• Expiry date: Dec 1, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2377/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention is directed to a polyamide-clay nanocomposite, products produced from the nanocomposite, and a process for preparing a polyamide-clay nanocomposite. The polyamide-clay nanocomposite comprises (a) an amorphous matrix polyamide comprising (i) a residue of a dicarboxylic acid component comprising at least two diacids and (ii) a residue of a diamine component, and (b) a layered clay material, wherein the layered clay material is dispersed in the matrix polyamide.