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:
Aug. 07, 2018
Filed:
Oct. 26, 2010
Hiroshi Takayama, Shiga, JP;
Toshihiro Tanaka, Shiga, JP;
Masashi Hara, Shiga, JP;
Hong Liu, Waynesboro, VA (US);
Hiroshi Takayama, Shiga, JP;
Toshihiro Tanaka, Shiga, JP;
Masashi Hara, Shiga, JP;
Hong Liu, Waynesboro, VA (US);
INVISTA North America S.a r.l., Wilmington, DE (US);
Abstract
[Problem] To provide a polyurethane elastic yarn which has the high strength and ductility sought in polyurethane elastic yarn, and also has excellent durability and heat resistance, as well as little fatigue at low temperature; and a production method thereof. [Means of Resolution] A polyurethane elastic yarn made from polyurethane which has polymer diol and diisocyanate as starting substances, wherein said polyurethane comprises a polyurethane A containing a polybutadiene structure in which the proportion of 1,2-bonded butadiene structure to 1,4-bonded butadiene structure in the molecule is in the range from 91:9 to 20:80.