Compositions and films comprising polylactic acid polymer, polyvinyl acetate polymer and plasticizer
US11254812B2 · kind B2 · utility
1Cited by
49References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2020 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Mar 13, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.