Ethylene-vinyl alcohol copolymer and producing method thereof
US10975181B1 · kind B1 · utility
1Cited by
2References
24Claims
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Key dates
| Filing date | Dec 30, 2020 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Dec 30, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2329/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Pellets of ethylene-vinyl alcohol copolymer having lamellar stacks of ethylene-vinyl alcohol copolymer with a long period determined by small-angle X-ray scattering of at least 8.35 nm. The lamellar stacks of ethylene-vinyl alcohol copolymer may have an average crystalline lamellar thickness of at least 6 nm. Additionally or alternatively, the lamellar stacks of ethylene-vinyl alcohol copolymer may have an average amorphous lamellar thickness of at least 2.35 nm. Methods are also provided for producing pellets of ethylene-vinyl alcohol copolymer, such as those having preferable lamellar stack properties, as described above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.