Vinylalkoholeinheiten enthaltende Polymerfasern mit grosser Feuchtigkeitsabsorption und hoher Wasserabsorption sowie Verfahren zu deren Herstellung.

摘要

Fibers composed of a vinyl alcohol unit-containing polymer, or composite fibers, yarns or fiber products composed of the phase of the vinyl alcohol unit-containing polymer and the other fiber-forming polymer phase are acetalized with at least one of aldehyde compounds represented by the formulas, OHC-CH2-C(R<1>)(R<2>)-COOB and OHC-C(R<3>)(R<4>)-COOB wherein B is a hydrogen atom or an alkyl group, R<1>, R<2>, R<3> and R<4>, independently from each other, denote a hydrogen atom or an alkyl group, and at least one of R<1> and R<2> and at least one of R<3> and R<4> are alkyl groups, and a carboxyl group is then converted into a salt to form fibers, yarns or fiber products having high moisture absorption and high water absorption. According to this invention, there are provided fibers, yarns and fiber products which have durability, high moisture absorption and high water absorption that are not lost even by dyeing treatment or cleaning, and which are soft and well bulky and have good feeling like natural fibers; besides they can be produced without causing troubles in the fiberization step or allowing coloration.