Title:
FILAMENT
Document Type and Number:
Japanese Patent JP2022126589
Kind Code:
A
Abstract:
To provide a biodegradable filament having an excellent flexibility and an excellent feeder transportability.SOLUTION: There is provided a filament having at least a sheath portion and a core portion, in which the sheath portion comprises a biodegradable polyester and/or a water-soluble polymer, and the core portion comprises a polyester copolymer. When the polyester copolymer has two types of ester bond-forming monomer residues as main structural units, and the two types of ester bond-forming monomers each are designated as "monomer A" and "monomer B", a certain relation is satisfied among a mole fraction (%) of the monomer A residue in the polyester copolymer, a mole fraction (%) of the monomer B residue in the polyester copolymer and a mole fraction (%) of structure in which the monomer A residue and the monomer B residue are adjacent in the polyester copolymer, in which a crystallization rate of at least one of the monomer A residue or the monomer B residue is less than 14%.SELECTED DRAWING: Figure 1
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Inventors:
FURUKAWA TAISUKE
KADOWAKI KOJI
NAKAMURA MASATAKA
KADOWAKI KOJI
NAKAMURA MASATAKA
Application Number:
JP2022004816A
Publication Date:
August 30, 2022
Filing Date:
January 17, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
D01F8/14; C08G63/06
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