Blends of a polylactic acid and a water soluble polymer
US9085660B2 · kind B2 · utility
0Cited by
21References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Mar 29, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to water-dispersive biodegradable compositions which may be formed into films and fibers. The present invention also relates to polymer blends comprising polylactide and water-soluble polymers. More particularly, the present invention relates to the use of grafted copolymers (PLA-grafted water-soluble polymers) for the compatibilization of PLA and water-soluble polymers. Such reactive compatibilization of immiscible polymer blends is achieved in such a way that main blend components are covalently bonded. In addition, such reactive compatibilization can be carried out by reactive extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.