Highly flexible starch-based films
US6649188B2 · kind B2 · utility
18Cited by
21References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Apr 7, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31975
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Film-forming compositions are disclosed that can comprise, on a dry solids basis, 25 to 75 percent by weight of certain starch derivatives and 25 to 75% primary external plasticizer. The starch derivatives can be chemically modified starches that range in molecular weight from 100,000 to 2,000,000. The high levels of plasticizer in the films give excellent film flexibility and integrity. The films are also resistant to penetration by water, oil and/or grease.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.