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. 28, 2002
Filed:
Jan. 31, 2001
Applicant:
Inventors:
Jacobus A. Loontjens, Meerssen, NL;
Bartholomeus J. M. Plum, Meerssen, NL;
Assignee:
DSM N.V., , NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 6/914 ; C08G 6/916 ; C08F 8/00 ;
U.S. Cl.
CPC ...
C08G 6/914 ; C08G 6/916 ; C08F 8/00 ;
Abstract
A high molecular weight polyester-amide block copolymer is produced by reacting a mixture of lower molecular weight polyester and polyamide in the melt with a carbonyl bislactam, especially carbonyl biscaprolactam. The higher molecular weight block copolymer may be obtained in as short a time as 2 minutes, whereas, at least about 10 minutes is required in a conventional process, under comparable conditions, using a bislactam.