Water stable compositions and articles comprising starch and methods of making the same
US8530557B2 · kind B2 · utility
3Cited by
56References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2012 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Jul 18, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/696
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Thermoplastic polymer compositions comprising starch and articles made therefrom are water stable or may be rendered so. One method of making water stable thermoplastic compositions comprises the steps of mixing destructured starch with polyhydric alcohol and acid, and forming an ester condensation reaction product from at least a portion of the polyhydric alcohol and acid. In some embodiments, a pre-polymer formed from the ester condensation reaction may be provided as a pre-polymer that is mixed with the starch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.