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US 11,473,218 B2Granted
Modified ethylene-vinyl alcohol copolymer fibers
AssigneeKuraray Co., Ltd.
InventorsShoji Onogi, Hitoshi Nakatsuka, Shinya Kawakado, Takayuki Ikeda
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Abstract
A modified ethylene-vinyl alcohol copolymer fiber includes an ethylene-vinyl alcohol copolymer containing 0.1 to 10 mol % of a modified component and 5 to 55 mol % of ethylene, and has a crystallinity of 25% to 50%.
Claims4
A modified ethylene-vinyl alcohol copolymer fiber comprising:
- a modified ethylene-vinyl alcohol copolymer containing 0.1 mol % to 10 mol % of the following structural unit (I), and 5 mol % to 55 mol % of ethylene, the modified ethylene-vinyl alcohol copolymer fiber having a crystallinity of 25% to 50%,
- wherein R′, R2, R3 and R4 represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 10 carbon atoms, an alicyclic hydrocarbon group having 3 to 10 carbon atoms, or an aromatic hydrocarbon group having 6 to 10 carbon atoms, R′, R2, R3 and R4 may be the same as or different from each other, R3 and R4 may be bonded to each other, and R′, R2, R3 and R4 may have a hydroxyl group, a carboxyl group, or a halogen atom.
Dependencies are inferred from the claim text.