Biodegradable composition and shaped article obtained therefrom
US5306550A · kind A · utility
39Cited by
3References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 28, 1991 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Jun 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/614
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A biodegradable film or the like shaped article is formed from a composition including 100 parts by weight of cellulose fibers having a length of 3 mm or less and a diameter of 50 .mu.m or less, 10-600 parts by weight of a thermoplastic resin and 2-100 parts by weight of chitosan. A mixture containing (a) an aqueous solution of an acid salt of chitosan, (b) an aqueous dispersion or solution of a thermoplastic resin and (c) fine cellulose fibers is dried and shaped to obtain such a biodegradable shaped article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.