Foam compositions comprising polylactic acid polymer, polyvinyl acetate polymer and plasticizer, articles, and methods of making and using same
US11407872B2 · kind B2 · utility
1Cited by
11References
11Claims
0Family size
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Key dates
| Filing date | Jun 14, 2017 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Jul 28, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Foam compositions are provided including a polylactic acid polymer; second (e.g., polyvinyl acetate) polymer having a glass transition temperature (Tg) of at least 25° C.; and plasticizer. Also described are articles comprising the foam compositions, such as a sheet or hearing protection article. Methods of making and using the foam compositions are further described herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.