Patent · US Expired

Process for preparing a high barrier amorphous polyamide-clay nanocomposite

US6552114B2 · kind B2 · utility

15Cited by

133References

19Claims

0Family size

Assignee

The University of South Carolina Research Foundation · 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	May 13, 2002
Grant date	Apr 22, 2003
Priority date	—
Expiry date	May 13, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S977/902
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to a process for preparing an amorphous polyamide-clay nanocomposite comprising the steps of:a. melt mixing a layered clay material with an oligomeric polyamide resin to form an oligomeric polyamide resin-clay composite, andb. mixing the oligomeric resin-clay composite with a high molecular weight amorphous matrix polyamide comprising (i) a residue of at least two dicarboxylic acid components and (ii) a residue of at least one diamine component,wherein the layered clay material has been cation exchanged with an onium cation of the formula:

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.