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. 09, 2003
Filed:
Jun. 13, 2001
Dominick A. Burlone, Asheville, NC (US);
Matthew B. Hoyt, Brownstown Township, MI (US);
Charles F. Helms, Jr., Greenwood, SC (US);
John A. Hodan, Arden, NC (US);
Richard Kotek, Raleigh, NC (US);
Carol W. Morgan, Asheville, NC (US);
Randall A. Sferrazza, Asheville, NC (US);
Fang A. Wang, Arden, NC (US);
Otto M. Ilg, Asheville, NC (US);
Terry D. Roberts, Candler, SC (US);
Ronald G. Morrow, Enka, NC (US);
BASF Corporation, Mt. Olive, NJ (US);
Abstract
Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions in the reactor zone to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. A spinneret zone downstream of the reactor zone thus receives the molten polycaprolactam directly from the reactor zone and forms a fiber therefrom by extruding it through the spinneret's fiber-spinning orifice.