Polyester fiber, method for producing the same, cloth, textile product, and polyester formed article

摘要

Disclosed are a polyester fiber having excellent antibacterial performance, deodorizing performance, and stain resistance together with sufficient durability; a method for producing the same; a cloth; a textile product; and a polyester formed article. The polyester fiber, cloth, or polyester formed article has a pH of less than 7.0 achieved by subjecting a polyester fiber, a cloth, or a polyester formed article containing a polyester copolymerized with an ester-forming metal sulfonate compound and/or an ester-forming phosphonium sulfonate compound to an acid treatment, or alternatively by applying a processing liquid having a pH of less than 7.0 to a polyester fiber, a cloth, or a polyester formed article.

主权项

1. A polyester fiber comprising a polyester, characterized in that the polyester fiber has a pH of 4.0 to 6.6 and the polyester fiber is hydrophilized and a single-fiber fineness of the polyester fiber is 0.001 to 1.5 dtex and the polyester fiber contains a polyester copolymerized with an ester-forming metal sulfonate compound represented by the following general formula (1) and/or an ester-forming phosphonium sulfonate compound represented by the following general formula (2): wherein A1 represents an aromatic group or an aliphatic group, X1 represents an ester-forming functional group, X2 represents an ester-forming functional group the same as or different from X1 or a hydrogen atom, M represents a metal, and m represents a positive integer; wherein A2 represents an aromatic group or an aliphatic group, X3 represents an ester-forming functional group, X4 represents an ester-forming functional group the same as or different from X3 or a hydrogen atom, R1, R2, R3, and R4 represent the same or different groups selected from the group consisting of alkyl and aryl groups, and n represents a positive integer.