Thermoplastic or elastomeric compositions based on esters of a starchy material and method for preparing such compositions
US8795745B2 · kind B2 · utility
2Cited by
9References
14Claims
0Family size
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Key dates
| Filing date | Oct 13, 2009 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Apr 24, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic or elastomeric composition, is characterized in that: a) it exhibits a degree of biodegradability of less than 50%, preferably less than 30%, and b) it contains at least 0.5% and at most 99.95% by weight of an ester of a starchy material, which has a degree of ester substitution (DS) of between 1.6 and 3, and at least 0.05% by weight and at most 99.5% by weight of a polymer other than starch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.