Abstract: The present invention provides finishes for elastic fiber, which produce elastic fiber yarn having superior antistatic, unwinding, package buildup performance and lubricity properties. The present finishes further minimize fly sticking on the elastic fiber during the knitting operation of elastic fiber yarn and cotton spun yarn. The finishes of the present invention contain 80 to 99.99 parts by weight of at least one base component selected from the group consisting of silicone oils, mineral oils and ester oils, 0.01 to 10 parts by weight of amino-modified silicones and 0.0001 to 10 parts by weight of phosphate esters containing an acidic hydroxyl group and at least one hydrocarbon or oxyalkylene group per molecule. The elastic fiber of the present invention is characterized with the application of the finish in an amount of 0.1 to 15 weight percent of the fiber.

Abstract: The present invention provides finishes for elastic fiber, which attain elastic fiber yarn having superior antistaticity, unwinding and package buildup performance and lubricity, and minimize fly sticking on elastic fiber yarn in knitting operation of elastic fiber yarn and cotton spun yarn to enable high-speed knitting operation of fine elastic fiber yarn and cotton spun yarn; and also provides elastic fiber applied therewith. The finishes of the present invention contain 60 to 99.99 parts by weight of at least one of base components selected from the group consisting of silicone oils, mineral oils and ester oils, 0.01 to 20 parts by weight of amino-modified silicones and 0.0001 to 20 parts by weight of phosphate esters containing at least one hydrocarbon group or oxyalkylene group per a molecule. The elastic fiber of the present invention is characterized by the application of the said finish with 0.1 to 15 weight percent of fiber.