Biodegradable water-sensitive films
US8329977B2 · kind B2 · utility
6Cited by
133References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2007 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Sep 21, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A film that is biodegradable and water-sensitive (e.g., water-soluble, water-dispersible, etc.) in that it loses its integrity over time in the presence of water is provided. The film contains a biodegradable polyester, starch, water-soluble polymer, and plasticizer. The desired water-sensitive attributes of film may be achieved in the present invention by selectively controlling a variety of aspects of the film construction, such as the nature of the components employed, the relative amount of each component, the manner in which the film is formed, and so forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.