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:
Mar. 08, 2016
Filed:
Jan. 05, 2011
Applicant:
Steven P. Pardini, Harrisonburg, VA (US);
Inventor:
Steven P. Pardini, Harrisonburg, VA (US);
Assignee:
INVISTA North America S.a.r.l., Wilimington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/00 (2006.01); C08G 18/08 (2006.01); C08G 18/10 (2006.01); C08G 18/28 (2006.01); C08G 18/30 (2006.01); C08G 18/32 (2006.01); C08G 18/60 (2006.01); C08J 5/00 (2006.01); C08L 75/00 (2006.01); D01F 6/00 (2006.01); D03D 9/00 (2006.01); D03D 13/00 (2006.01); D03D 15/00 (2006.01); D03D 15/08 (2006.01); D03D 17/00 (2006.01); D03D 19/00 (2006.01); D04B 1/18 (2006.01); D04B 1/22 (2006.01); D04B 7/16 (2006.01); D04B 7/24 (2006.01); D04B 9/24 (2006.01); D04B 11/12 (2006.01); D04B 21/14 (2006.01); D04B 21/20 (2006.01); D01F 6/70 (2006.01); D01F 6/72 (2006.01);
U.S. Cl.
CPC ...
D01F 6/70 (2013.01); C08G 18/10 (2013.01); C08G 18/2865 (2013.01); C08G 18/3228 (2013.01); D01F 6/72 (2013.01); Y10T 442/40 (2015.04);
Abstract
Disclosed herein are a highly uniform spandex and process for making such spandex. More particularly, the polyurethaneurea of which such spandex is prepared has both dialkylurea and cycloalkylurea ends, wherein a chain terminator composition includes a dialkylamine such as diethylamine and a cylcoalkylamine such as cyclohexylamine.