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:
Oct. 04, 1983
Filed:
Mar. 25, 1981
Applicant:
Inventors:
Reinoud J Gaymans, Enschede, NL;
Edmond H Bour, Limbricht, NL;
Assignee:
Stamicarbon BV, Geleen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528335 ; 528336 ;
Abstract
A process for the preparation of white nylon 4,6 polyamide of high molecular weight from a tetramethylenediamine adipic acid prepolymer, formed under controlled conditions of temperature and water vapor pressure and wherein the plurality of cyclical end-groups in the prepolymer does not exceed 0.20 mg. equivalent per gram of prepolymer.