One-pot, one-step in situ living polymerization from silicate anchored multifunctional initiator
US7902321B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Nov 9, 2005 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Sep 30, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/442
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Silicate anchored multifunctional initiator has moiety initiating ring opening living polymerization of lactone or ethylene oxide or cyclic siloxane monomer and other moiety for initiating living free radical polymerization of ethylenically unsaturated monomer. The monomers are reacted with the initiator in a one-pot, one-step reaction to cause living polymerization of both monomers and exfoliation of silicate layers to provide dispersed block copolymer silicate nanocomposite, with the junction of the two blocks being anchored to silicate layer and each block dangling therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.