Elastic film containing a renewable starch polymer
US8889945B2 · kind B2 · utility
19Cited by
75References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2010 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jun 6, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A film that contains a thermoplastic composition having a substantial portion of a renewable, natural starch polymer, and yet is elastic and exhibits good strength properties, is provided. Although starch is normally chemically incompatible with most elastomeric polymers due to their different polarities, the present inventors have discovered that phase separation may be minimized by selectively controlling certain aspects of the film, such as the nature of the elastomeric polymer and the starch polymer, and other film components, the relative amount of the film components, and the process for making the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.