| 摘要 |
PURPOSE:To manufacture a synthetic fiber having perfect sea-and-islands structure in cross-section, easily, without using a particular spinneret, by dissolving an acrylic resin composition and a vinyl chloride resin or chlorinated vinyl chloride resin composition in a common solvent and spinning the obtained dope. CONSTITUTION:A spinning dope is prepared by dissolving (A) 20-80pts.(wt.) of an acrylic resin composition composed mainly of acrylonitrile and (B) 80- 20pts. of a vinyl chloride resin and/or a chlorinated vinyl chloride resin composition having a chlorine content of <=68wt%, in (C) a common solvent (e.g. acetone). The spinning dope is extruded in a coagulation bath or in air, drawn, and dried to obtain a synthetic fiber consisting of a bundle of ultrafine filaments. EFFECT:It gives cotton having excellent heat-insulation, a filter capable of removing fine dust, a cloth having bulky and soft feeling, etc.
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