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:
Jan. 04, 2005
Filed:
Mar. 25, 2002
Andrew Bell, Lakewood, OH (US);
Robert H. Grubbs, South Pasadena, CA (US);
John P Morgan, Pasadena, CA (US);
Jason L. Moore, Huntsville, TX (US);
Andrew Bell, Lakewood, OH (US);
Robert H. Grubbs, South Pasadena, CA (US);
John P Morgan, Pasadena, CA (US);
Jason L. Moore, Huntsville, TX (US);
Cymetech, LLC, Huntsville, TX (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
The invention provides a method for converting a less active or slower to initiate system to a higher activity system so that at the end of a polymerization the most active species is present in the system. The invention generally relates to a process for converting a less active or slower to initiate catalyst system to a higher activity catalyst system wherein the process comprises contacting a protected N-heterocyclic carbene with a metathesis catalyst and an olefin in the presence of energy. One of the benefits of the invention is that the amount of catalyst required is less than or lowered in the presence of the protected N-heterocyclic carbene as compared to the amount of catalyst required in the absence of the protected N-heterocyclic carbene. The protected N-heterocyclic carbene can be unsaturated or saturated. In addition, the invention describes novel ruthenium initiators and methods of making the same.