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:
Dec. 31, 1991
Filed:
Jun. 01, 1990
Applicant:
Inventor:
Jack A Dellinger, Weaverville, NC (US);
Assignee:
BASF Corporation, Parsippany, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528323 ; 526 67 ; 526 70 ; 528481 ; 528499 ;
Abstract
A process for preparing polyamides of substantially constant cyclic dimer concentration from amide monomers includes extracting unreacted amide monomers and oligomers, reducing the oligomer concentration relative to the concentration of total extractants and then returning the extract to the reaction vessel in substantially the same total proportion as extracted.
Dellinger, Jack. (1991). Constant compositioin recycle of nylon 6 polymerization wash water (U.S. Patent No. 5077381). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5077381
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile