Cyclodextrin-polyvinyl alcohol polymers and a process for the preparation thereof in a pearl, foil, fiber or block form
US4274985A · kind A · utility
35Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1979 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Jul 9, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L5/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention concerns new cyclodextrin-polyvinyl alcohol polymers capable of forming inclusion complexes. The preparation of said polymers by cross-linking a cyclodextrin, a mixture of cyclodextrins, or carbohydrate mixtures containing cyclodextrins in the presence of polyvinyl alcohol, polyvinyl acetate or a polyvinyl alcohol-polyvinyl acetate copolymer, with a polyfunctional coupling reactant capable of reacting with the cyclodextrins and with the polymers present is also within the scope of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.