Biodegradable polyester and natural polymer compositions and expanded articles therefrom
US5854345A · kind A · utility
14Cited by
41References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 4, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Sep 4, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/916
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Expanded articles have a compressible and resilient body including two biodegradable components. One component preferably is starch or a modified starch. Another component is a water insoluble, synthetic polymer, preferably a hydroxy-functional polyester. The article may be thermoformed, and has exterior surfaces with substantial resistance to moisture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.