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:
Sep. 05, 2006
Filed:
Mar. 18, 2005
Andy C. Chang, Houston, TX (US);
Hong Peng, Lake Jackson, TX (US);
Jozef J. I. Van Dun, Bellaire, TX (US);
Randy E. Pepper, Lake Jackson, TX (US);
Edward N. Knickerbocker, Lake Jackson, TX (US);
Antonios K. Doufas, Lake Jackson, TX (US);
Rajen M. Patel, Lake Jackson, TX (US);
Lizhi Liu, Lake Jackson, TX (US);
Byron P. Day, Canton, GA (US);
Stephen M. Englebert, Woodstock, GA (US);
Joy F. Jordan, Marietta, GA (US);
Renette E. Richard, Dunwoody, GA (US);
Christian L. Sanders, Decatur, GA (US);
Varunesh Sharma, Atlanta, GA (US);
Andy C. Chang, Houston, TX (US);
Hong Peng, Lake Jackson, TX (US);
Jozef J. I. Van Dun, Bellaire, TX (US);
Randy E. Pepper, Lake Jackson, TX (US);
Edward N. Knickerbocker, Lake Jackson, TX (US);
Antonios K. Doufas, Lake Jackson, TX (US);
Rajen M. Patel, Lake Jackson, TX (US);
Lizhi Liu, Lake Jackson, TX (US);
Byron P. Day, Canton, GA (US);
Stephen M. Englebert, Woodstock, GA (US);
Joy F. Jordan, Marietta, GA (US);
Renette E. Richard, Dunwoody, GA (US);
Christian L. Sanders, Decatur, GA (US);
Varunesh Sharma, Atlanta, GA (US);
Dow Global Technologies Inc., Midland, MI (US);
Abstract
Fibers that exhibit good elasticity or extensibility and tenacity, and low modulus are prepared from propylene-based copolymers. The propylene-based copolymers comprise at least about 50 weight percent (wt %) of units derived from propylene and at least about 8 wt % of units derived from one or more comonomers other than propylene, e.g., ethylene. Particularly preferred propylene copolymers are characterized as havingC NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In one aspect of the invention, fibers are subjected to stress-induced crystallization by subjecting the fiber to tensile elongation during draw.