Biodegradable shaped products and the method of preparation thereof
US5153037A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1348
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A biodegradable shaped product comprising an expanded modified flour product preferably having at least 40% by weight amylose content and containing about 2% or more by weight of an inorganic water soluble salt, 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 modified flour product, the flour preferably having at least 40% by weight amylose content and containing about 2% or more by weight of an inorganic water soluble salt, 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.