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:
Nov. 23, 2010
Filed:
Nov. 03, 2004
Nathan E. Houser, Afton, VA (US);
Gordon W. Selling, Dunlap, IL (US);
Beverly Jean Selle, Wilmington, DE (US);
Steven Peter Pardini, Waynesboro, VA (US);
Robert Dewhurst, Gloucester, GB;
Elizabeth Todd Singewald, Wilmington, DE (US);
Nathan E. Houser, Afton, VA (US);
Gordon W. Selling, Dunlap, IL (US);
Beverly Jean Selle, Wilmington, DE (US);
Steven Peter Pardini, Waynesboro, VA (US);
Robert Dewhurst, Gloucester, GB;
Elizabeth Todd Singewald, Wilmington, DE (US);
INVISTA North America s.àr.l., Wilmington, DE (US);
Abstract
Commercial spandex can be prepared with greater efficiency, improved consistency and at lower costs from a high-solids content polyurethaneurea polymer solution. The polyurethaneurea is prepared using a combination of 4,4'-MDI and 2,4′-MDI, and an amount of chain extenders and chain terminators such that the polymer solution, prior to spinning, is highly soluble and has an appropriate pre-spun IV and primary amine content. Such spandex fibers, and the fabrics and garments comprising them, have good dyeability and colorfastness, as well as other desirable characteristics.