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:
Sep. 19, 2006
Filed:
Apr. 18, 2003
Graeme Moad, Victoria, AU;
Ezio Rizzardo, Victoria, AU;
Catherine Louise Moad, Victoria, AU;
Steven Dale Ittel, Wilmington, DE (US);
Lech Wilczek, Wilmington, DE (US);
Alexei A. Gridnev, Wilmington, DE (US);
Graeme Moad, Victoria, AU;
Ezio Rizzardo, Victoria, AU;
Catherine Louise Moad, Victoria, AU;
Steven Dale Ittel, Wilmington, DE (US);
Lech Wilczek, Wilmington, DE (US);
Alexei A. Gridnev, Wilmington, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Commonwealth Scientific and Industrial Research Organisation, Victoria, AU;
Abstract
This invention relates to a process for controlling the architecture of copolymers of at least two unsaturated monomers, made by free-radical polymerization in the presence of a cobalt-containing chain transfer agent, including the control of molecular weight, degree of branching and vinyl end group termination, by varying at least one of the variables of molar ratio of monomers, their relative chain transfer constants, polymerization temperature and degree of conversion and amount of cobalt chain transfer agent; and polymers made thereby.