Smectite clay/organic chemical/polymer compositions useful as nanocomposites
US6521690B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1999 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | May 25, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/346
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention is of a composition comprised of a smectite clay modified with an organic chemical composition and a polymer. The composition consists of an organic chemical/smectite clay intercalate that has been ion-exchanged and reacted and intercalated with one or more quarternary ammonium compounds and an anionic material and further blended into a polymer resin to make a nanocomposite composition. This material can be blended into a wide variety of polymers. This kind of system gives improved dispersion over conventional organoclays, intercalates or hybrid clays described in the literature, especially in non-polar resins. The defined organoclay has been found to be highly dispersible in a variety of polymers, whether polar or non-polar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.