The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Jan. 10, 2017
Applicant:
Hyosung Tnc Corporation, Seoul, KR;
Inventors:
Assignee:
HYOSUNG TNC CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 1/10 (2006.01); D02G 3/32 (2006.01); D02G 3/44 (2006.01); D01D 1/02 (2006.01); D01D 5/04 (2006.01); D01F 6/70 (2006.01); D01D 1/06 (2006.01); C08L 75/08 (2006.01); D01F 6/94 (2006.01);
U.S. Cl.
CPC ...
D01F 1/10 (2013.01); C08L 75/08 (2013.01); D01D 1/02 (2013.01); D01D 1/06 (2013.01); D01D 5/04 (2013.01); D01F 6/70 (2013.01); D02G 3/32 (2013.01); D02G 3/44 (2013.01); D01F 6/94 (2013.01); D10B 2321/121 (2013.01); D10B 2331/10 (2013.01); D10B 2331/12 (2013.01); D10B 2509/00 (2013.01);
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.