Water-based process for the preparation of polymer-clay nanocomposites
US7625985B1 · kind B1 · utility
4Cited by
10References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 2, 2006 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jul 29, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to an aqueous based process for the preparation of intercalated and/or exfoliated natural or synthetic clays using block copolymers in latex form containing at least one non-polar block and one or more cationic blocks, wherein the block copolymers are prepared by an emulsion controlled free radical polymerization method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.