PURPOSE: To obtain the subject raw yarn useful for obtaining electrically transplanted products comprising favorable ultrafine fibers, consisting of splittable fibers produced by conjugating a hot water-soluble polymer component and a hot water-insoluble polymer component dyeable at normal pressures in specific mode.
CONSTITUTION: The objective pile raw yarns consist of splittable fibers produced by confluently conjugating a hot water-soluble polymer component (e.g. 5-sodium sulfoisophthalate-copolymerized polyester) and a hot water-insoluble polymer component dyeable at normal pressure (e.g. a polyester modified so as to be dyeable with cationic dyes by copolymerizing e.g. a polyalkylene glycol). At least part of the hot water-soluble polymer component represents the surface of the fibers, and both hot water treatment and dyeing after electric transplantation can be conducted at <100°C without the need for using any organic solvent or strong alkali. The ultrafine piles of the resultant electrically transplanted products are excellent both in denseness and uniformity.
SASAMOTO FUTOSHI
TAKAHASHI NOBORU
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