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:
Feb. 20, 2007
Filed:
Feb. 14, 2005
Charles L. Mccormick, Hattiesburg, MS (US);
Michael S. Donovan, Hattiesburg, MS (US);
Andrew B. Lowe, Hattiesburg, MS (US);
Brent S. Sumerlin, Hattiesburg, MS (US);
David B. Thomas, Hattiesburg, MS (US);
Charles L. McCormick, Hattiesburg, MS (US);
Michael S. Donovan, Hattiesburg, MS (US);
Andrew B. Lowe, Hattiesburg, MS (US);
Brent S. Sumerlin, Hattiesburg, MS (US);
David B. Thomas, Hattiesburg, MS (US);
University of Southern Mississippi, Hattiesburg, MS (US);
Abstract
Polymers and copolymers synthesized by means that yield a narrow range of molecular weights can have different properties than polymers synthesized by conventional means. In order to obtain such polymers, however, polymerization must be controlled. One type of controlled polymerization is the reversible addition-fragmentation chain transfer (RAFT) process, which has characteristics of a living polymerization. The present invention discloses a group of dithioesters and trithioesters suitable as chain transfer agents for RAFT polymerization. The present invention also discloses RAFT polymerizations conducted in aqueous media.