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. 28, 2003
Filed:
Jul. 03, 2000
Applicant:
Inventors:
Eli Ruckenstein, Amherst, NY (US);
Hongmin Zhang, Amherst, NY (US);
Assignee:
The Research Foundation of State University of New York, Amherst, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
C08F / ;
Abstract
The present invention provides a method for the preparation of graft, block, and star-shaped copolymers. The method involves in situ coupling reaction between a living anionic backbone polymer possessing epoxy side chains and other living anionic polymers. The present method is simple, the coupling reaction is fast, pure copolymers are produced and the molecular weight, graft number and grafting position can be controlled to a greater extent than in existing methods.