LAYERED COMPOSITIONS WITH MULTI-CHARGED ONIUM IONS AS EXCHANGE CATIONS, AND THEIR APPLICATION TO PREPARE MONOMER, OLIGOMER, AND POLYMER INTERCALATES AND NANOCOMPOSITES PREPARED WITH THE LAYERED COMPOSITIONS OF THE INTERCALATES

US6399690B2 · kind B2 · utility

Assignee

• AMCOL INTERNATIONAL CORPORATION · US

Inventors

• Tie Lan · Lake Zurich, US
• Erin K. Westphal · Oakwood Hills, US
• Vasiliki Psihogios · Wheeling, US
• Ying Liang · Lake Zurich, US

Key dates

• Filing date: Mar 7, 2001
• Grant date: Jun 4, 2002
• Expiry date: Mar 7, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/269
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Intercalated layered materials prepared by co-intercalation of a multi-charged onium ion spacing/coupling agent and a matrix polymer between the planar layers of a swellable layered material, such as a phyllosilicate, preferably a smectite clay. The spacing of adjacent layers of the layered materials is expanded at least about 3 å, preferably at least about 5 å, usually to about 15-20 å, e.g., 18 å with the di-charged onium ion spacing/coupling agent. The intercalation of the matrix polymer then increases the spacing between adjacent layers to at least about 15 å, preferably to about 20 å to about 30 å.