| 摘要 |
<p>Inorganic salts generate in the production of metal salts of hydrocarbonsulfonic acids, metal salts of hydrocarbon sulfuric acids, and metal salts of hydrocarbon phosphoric acids. When such an organic salt containing an inorganic salt is added as an antistatic ingredient to a polymer for polyurethane fiber production and this polymer is spun, then fiber breakage or pack clogging occurs due to the inorganic salt. Those antistatic ingredients have high hygroscopicity and contain a slight amount of water. When such an antistatic ingredient is added during polymerization for polyurethane formation, an alcohol and the water react with the isocyanate to result in a reduced degree of polymerization and in oligomer formation. Spinning this polyurethane also results in decreases of elongation and strength. The material for elastic polyurethane fibers of the invention, which eliminates the above troubles, comprises a mixture of 5 to 95 wt.% at least one of the antistatic ingredients and 95 to 5 wt.% isocyanate-free starting material for elastic fibers.</p> |
