Starch-polyester biodegradable graft copolyers and a method of preparation thereof
US7629405B2 · kind B2 · utility
5Cited by
27References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Mar 17, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A starch-polyester graft copolymer and chemically modified starch-polyester graft copolymer composition comprising a chemically modified starch or chemically modified starch-nanoclay product is described. The composition can be produced continuously in a twin-screw co-rotating extruder. The starch-polyester graft copolymer can be solvent cast, melt cast and blown into clear transparent film particularly for use in single use disposable applications and can be biodegradable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.