Polyvinyl chloride fiber, process for producing the same, and use thereof

Abstract

Polyvinyl chloride fibers which are reduced in heat shrinkage even in an atmosphere of 100 DEG C or higher and are obtained from a composition retaining the spinnability possessed by conventional compositions. The fibers are suitable for use in applications such as artificial hair. The polyvinyl chloride fibers are characterized by being obtained by forming a resin composition comprising 100 parts by mass of a polyvinyl chloride resin, 3 to 20 parts by mass of a compatible chlorinated polyvinyl chloride resin, 10 to 30 parts by mass of a heat-resistant chlorinated polyvinyl chloride resin, and 0.1 to 10 parts by mass of a heat stabilizer into fibers, the compatible chlorinated polyvinyl chloride resin having a chlorine content of 57 to 64 wt.% and an average degree of polymerization of 450 to 800 and the heat-resistant chlorinated polyvinyl chloride resin having a chlorine content of 65 to 71 wt.% and an average degree of polymerization of 450 to 1,100.

Description

technical field [0001] The present invention relates to polyvinyl chloride fibers, especially polyvinyl chloride having small heat shrinkage and maintaining conventional spinning characteristics even in an atmosphere of 100°C or higher, and to a method for producing the polyvinyl chloride and to the production of the polyvinyl chloride application. Background technique [0002] Vinyl chloride resin is used in various applications as a typical general-purpose plastic because of its excellent transparency, flame retardancy, chemical resistance, and low price. Among them, polyvinyl chloride fibers are close to natural hair in strength, ductility, etc., and therefore, are generally used as fibers for artificial hair instead of hair. PVC shrinks more than necessary due to heat in secondary processing. As a method of solving such a problem, a method of producing a polyvinyl chloride fiber made of a composition of a vinyl chloride-containing resin and a heat-resistant chlorinated...

AI Technical Summary

Problems solved by technology

[0007] However, since the thermal shrinkage of the ethylene-vinyl acetate / vinyl chloride graft polymer itself is equal to that of the vinyl chloride resin, even if the compatibility between the vinyl chloride resin and the chlorinated vinyl chloride resin is improved, the resin composition Self-heat shrinkage will also increase, therefore, this method is not preferred

While improving the compatibility between vinyl chloride resins and chlorinated vinyl chloride resins, it is necessary to select a resin that itself has a certain degree of heat resistance, but still no satisfactory resin has been selected.