Clays pre-activated with intercalated polymerization initiation sites
US7781509B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Oct 16, 2008 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Oct 16, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/88
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A modified clay may be made by contacting a clay with an unsaturated cationic compound and an alkoxyamine, or an adduct thereof. The resulting pre-activated clay, which contains a cationic alkoxyamine bound to the clay, may be further treated with a monomer to provide a polymer that is bound to the clay, thereby forming a nanocomposite material. The nanocomposite material may in turn be blended with another polymer prepared from the same or a different monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.