Polybenzoxazine nanocomposites of clay and method for making same
US6323270A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Nov 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L61/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A nanocomposite composition is disclosed which comprises clay and an effective amount of a benzoxazine monomer, oligomer, and/or polymer. In one embodiment, the presence of the benzoxazine monomer, oligomer, and/or polymer in the clay results in an at least about 5% increase in the spacing between the platelets of the clay. In another embodiment, the presence of the presence of the benzoxazine monomer, oligomer, and/or polymer in the clay results in at least about 5 wt. % of the clay being exfoliated. Also disclosed are a method for making (1) an intercalated nanocomposite clay composition which comprises clay and an effective amount of a benzoxazine monomer, oligomer, and/or polymer; (2) an exfoliated nanocomposite clay composition which comprises clay and an effective amount of a benzoxazine monomer, oligomer, and/or polymer; and (3) a method for making a nanocomposite clay composition that is both exfoliated and intercalated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.