公开(公告)号：US20210172090A1

公开(公告)日：2021-06-10

申请号：US16769215

申请日：2018-09-21

Applicant: HYOSUNG TNC CORPORATION

Inventor： Tae Heon Kim ,  Ho Young Jeong ,  Yeon Soo Kang

IPC: D01F6/70 ,  D01D5/04 ,  D01F1/10 ,  D04B1/18 ,  C08G18/48 ,  C08G18/12

Abstract: The present invention relates to a polyurethane urea elastic yarn having improved dyeability and a manufacturing method therefor. Through a process of forming a prepolymer by mixing polyethyleneglycol with polyol and then adding diisocyanate to the same in a prepolymer manufacturing step during the manufacture of a polyurethane urea elastic yarn, the hydrophilicity of the polyurethane urea elastic yarn is improved such that the accessibility of an acid dye is enhanced, thereby enabling the dyeability of the polyurethane urea elastic yarn to be enhanced and an advantage of dye color deepening of a fabric, in which nylon and a polyurethane urea elastic yarn are knitted together, to be expected.

公开(公告)号：US12030978B2

公开(公告)日：2024-07-09

申请号：US18004969

申请日：2020-09-25

Applicant: HYOSUNG TNC CORPORATION

Inventor： Ji Young Kang ,  Yeon Soo Kang ,  Tae Heon Kim ,  Seong Bin Cho

IPC: D01F1/00 ,  C08G18/12 ,  C08G18/28 ,  C08G18/32 ,  C08G18/76 ,  D01F1/10 ,  D01F6/78 ,  D02G3/02 ,  D02G3/32 ,  D06P3/02

CPC classification number: C08G18/12 ,  C08G18/2865 ,  C08G18/3228 ,  C08G18/7671 ,  D01F1/10 ,  D01F6/78 ,  D02G3/02 ,  D02G3/328 ,  D06P3/028 ,  D10B2331/30 ,  D10B2401/061 ,  D10B2401/14

Abstract: The present invention is directed to a reactive dye-dyeable polyurethane-urea elastic yarn including a reaction product of at least two polyols, a diisocyanate compound, a diamine chain extender, an amine chain terminator, and a diethylenetriamine compound, wherein one of the polyols is polyethylene glycol, which is included in an amount of 20 to 30.0 mol % based on the total amount of the polyols, a polyurethane-urea polymer includes 10 meq/kg to 45 meq/kg of primary amine ends, and the capping ratio (CR) of the diisocyanate to the polyols is 1.8 to 2.0.

公开(公告)号：US11629437B2

公开(公告)日：2023-04-18

申请号：US16769215

申请日：2018-09-21

Applicant: HYOSUNG TNC CORPORATION

Inventor： Tae Heon Kim ,  Ho Young Jeong ,  Yeon Soo Kang

IPC: C08G18/12 ,  D01F6/70 ,  C08G18/48 ,  D01D5/04 ,  D01F1/10 ,  D04B1/18

Abstract: The present invention relates to a polyurethane urea elastic yarn having improved dyeability and a manufacturing method therefor. Through a process of forming a prepolymer by mixing polyethyleneglycol with polyol and then adding diisocyanate to the same in a prepolymer manufacturing step during the manufacture of a polyurethane urea elastic yarn, the hydrophilicity of the polyurethane urea elastic yarn is improved such that the accessibility of an acid dye is enhanced, thereby enabling the dyeability of the polyurethane urea elastic yarn to be enhanced and an advantage of dye color deepening of a fabric, in which nylon and a polyurethane urea elastic yarn are knitted together, to be expected.

公开(公告)号：US10662554B2

公开(公告)日：2020-05-26

申请号：US16069515

申请日：2017-01-10

Applicant: HYOSUNG TNC CORPORATION

Inventor： Hyun Gee Jung ,  Joo Hyun Cho ,  Yeon Soo Kang

IPC: D01F1/10 ,  D02G3/32 ,  D02G3/44 ,  D01D1/02 ,  D01D5/04 ,  D01F6/70 ,  D01D1/06 ,  C08L75/08 ,  D01F6/94

Abstract: The present invention relates to a method for preparing spandex having improved unwinding properties and enhanced adhesive properties with a hot melt adhesive and, more specifically, to a method for preparing spandex by means of adding a polystyrene polymer to a polyurethane-urea solution which is a spinning solution. Therefore, when spandex is unwound, irregular ballooning, tension spikes and the like can be effectively improved and other physical properties are unaffected. And the adhesive properties with a hot melt adhesive are enhanced.