Chitosan films with reduced shrinkage and laminates made therefrom
US8404342B2 · kind B2 · utility
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3References
13Claims
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Key dates
| Filing date | Apr 24, 2009 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Apr 12, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Inclusion of a needle structured sepiolite clay in a chitosan film in an amount of about 0.5 weight percent to about 8 weight percent was found to reduce shrinkage of the film. The clay is processed into a substantially dispersed form. Laminates fabricated from this chitosan film including dispersed sepiolite clay can be used in making a variety of finished articles that can be used to provide protection from hazardous chemical and biological agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.