Biodegradable shaped products and the method of preparation thereof
US5043196A · kind A · utility
128Cited by
27References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1989 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Dec 5, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1376
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A biodegradable shaped product comprising an expanded high amylose starch product having at least 45% by weight amylose content, said expanded product having a low density, closed cell structure with good resilience and compressibility. Another embodiment provides a biodegradable packaging material comprising an expanded, low density, closed cell starch product, the starch having at least 45% by weight amylose content and the expanded product having a bulk density of less than about 2.0 lb/ft.sup.3, a resiliency of at least about 50%, and a compressibility of from about 100 to 800 g/cm.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.