Biodegradable compositions produced by reactive blending of synthetic and naturally occurring polymers
US5446078A · kind A · utility
37Cited by
15References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1994 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Mar 8, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2003/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A biodegradable interpolymer and composition is prepared by the reactive blending of a synthetic polymer having functional groups with a naturally occurring biodegradable polymer such as a carbohydrate or protein compound. During reactive blending, the synthetic polymer can undergo a chemical reaction with the biodegradable natural polymer which results in covalent and physical bonding between the two polymers, thereby forming an interpolymer. By this process, a biodegradable interpolymer composition is produced that is suitable for molding various articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.