METHOD FOR MANUFACTURING ELASTIC YARN HAVING HIGH POWER AND HIGH POWER ELASTIC YARN MANUFACTURED USING SAME

摘要

The present invention relates to a method for manufacturing polyurethane-urea elastic yarn having high power, characterized by comprising: 1) manufacturing a prepolymer using ether-based glycol, which has a number average molecular weight of about 600 to 1300 daltons, and diisocyanate; and 2) obtaining polyurethane-urea polymer by adding a chain extender to the prepolymer, then spinning the result after ripening a polyurethane-urea spinning solution obtained by stirring the polyurethane-urea polymer. The polyurethane-urea elastic yarn manufactured by the method exhibits high power and a textile using the elastic yarn exhibits high power.