Intercalates formed via coupling agent-reaction and onium ion-intercalation pre-treatment of layered material for polymer intercalation
US6407155B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Mar 1, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Intercalated layered materials prepared by reacting the layered material with a coupling agent and co-intercalating an onium ion and an oligomer or 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 å, preferably at least about 5 å, usually preferably to a d-spacing of about 15-20 å, e.g., 18 å with the onium ion spacing/compatibilizing agent. The intercalation of the oligomer or polymer then increases the spacing of adjacent layers an additional at least 3 å, e.g., to at least about 20 å, preferably about 25 å to about 30 å, generally about 28 å, and provides a nanocomposite having increased tensile strength, flexibility, and ductility (less brittle).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.