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
US6262162A · kind A · utility
47Cited by
81References
53Claims
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Key dates
| Filing date | Mar 19, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Mar 19, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/269
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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 .ANG., preferably at least about 5 .ANG., usually to about 15-20 .ANG., e.g., 18 .ANG. 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 .ANG., preferably to about 20 .ANG. to about 30 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.