| 摘要 |
PURPOSE:Elastic yarn having improved elasticity, chemical resistance, strength, etc., obtained by reacting a polymer diol with an organic diisocyanate to give an intermediate polymer, reacting the polymer with a specific amount of an amino compound, spinning the reaction product, winding it, heat-treating it. CONSTITUTION:(i) A polymer such as polyoxyethylene glycol, etc. having 500- 6,000 molecular weight is reacted with (ii) excess mole of an organic diisocyanate such as p-phenylene diisocyanate, etc. to obtain a terminal isocyanate group-containing middle polymer. Then, this intermediate polymer is reacted with an amino compound in an amount to satisfy the equation (A is equivalent of isocyanate group in the middle polymer; B is equivalent of polyfunctional amino compound; C is equivalent of monofunctional amino compound), to give a polymer. Then, the polymer is spun, wound, heat-treated at 50-100 deg.C for >=2hr, to give the desired high-molecular weight elastic yarn.
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