Hydrophobic linear polyrotaxane molecule and crosslinked polyrotaxane
US7893168B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Aug 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
To provide a hydrophobic linear polyrotaxane molecule which is soluble in an organic solvent, and a crosslinked polyrotaxane using the same.A hydrophobic linear polyrotaxane molecule has a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule. The linear molecule is hydrophobic. The linear molecule is polycaprolactone and has a molecular weight ranging from 5,000 to 100,000. The cyclic molecule is α-cyclodextrin, β-cyclodextrin or γ-cyclodextrin.A crosslinked polyrotaxane is formed by combining the hydrophobic linear polyrotaxane molecule and a polymer through the cyclic molecule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.