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. 22, 2011
Filed:
Mar. 07, 2005
Krzysztof Matyjaszewski, Pittsburgh, PA (US);
Lindsay Bombalski, Pittsburgh, PA (US);
Wojciech Jakubowski, Pittsburgh, PA (US);
KE Min, Pittsburgh, PA (US);
James Spanswick, Wheaton, IL (US);
Nicolay V. Tsarevsky, Pittsburgh, PA (US);
Krzysztof Matyjaszewski, Pittsburgh, PA (US);
Lindsay Bombalski, Pittsburgh, PA (US);
Wojciech Jakubowski, Pittsburgh, PA (US);
Ke Min, Pittsburgh, PA (US);
James Spanswick, Wheaton, IL (US);
Nicolay V. Tsarevsky, Pittsburgh, PA (US);
Carnegie Mellon University, Pittsburgh, PA (US);
Abstract
Embodiments of the polymerization process of the present invention are directed to polymerizing free radically polymerizable monomers in the presence of a polymerization medium initially comprising at least one transition metal catalyst and an atom transfer radical polymerization initiator. The polymerization medium may additionally comprise a reducing agent. The reducing agent may be added initially or during the polymerization process in a continuous or intermittent manner. The polymerization process may further comprise reacting the reducing agent with at least one of the transition metal catalyst in an oxidized state and a compound comprising a radically transferable atom or group to form a compound that does not participate significantly in control of the polymerization process. Embodiments of the present invention comprise reacting a reducing agent with at least one of catalyst in an oxidized state and a compound comprising a radically transferable atom or group to initiate and/or maintain catalytic activity throughout the polymerization process.