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:
May. 30, 2000
Filed:
Aug. 17, 1998
Applicant:
Inventors:
Albert Walter Alsop, Wilmington, DE (US);
Elwood Neal Blanchard, Wilmington, DE (US);
Jeffrey D Cohen, Kennett Square, PA (US);
John Maurice Iwasyk, Wilmington, DE (US);
Clara Young Lin, Hockessin, DE (US);
David Neil Marks, Newark, DE (US);
Jan M Stouffer, Washington, WV (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528310 ; 528312 ; 528323 ; 528326 ; 528332 ; 528335 ; 528336 ; 528342 ;
Abstract
Disclosed is a process for the preparation of polyamide polymers via prepolymer formation in a reactor system comprising a reactor, flasher and separator, crystallization of the prepolymer under controlled temperature conditions and the subsequent conversion of these crystallized prepolymers to high molecular weight polymer.