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:
Apr. 26, 2005
Filed:
Aug. 29, 2002
Robert H. Grubbs, South Pasadena, CA (US);
Oren A. Scherman, Pasadena, CA (US);
Hyunjin M. Kim, Pasadena, CA (US);
Robert H. Grubbs, South Pasadena, CA (US);
Oren A. Scherman, Pasadena, CA (US);
Hyunjin M. Kim, Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
A method is provided for synthesizing a polymer in a controlled fashion using a ring-opening metathesis polymerization (ROMP) reaction, wherein polymerization is carried out using a catalytically effective amount of an olefin metathesis catalyst and a bridged bicyclic or polycyclic olefin monomer that contains at least two heteroatoms directly or indirectly linked to each other. Preferred catalysts are Group 8 transition metal complexes, particularly complexes of Ru and Os. Such complexes include the ruthenium bisphosphine complex (PCy)(Cl)Ru═CHPh (1) and the ruthenium carbene complex (IMesH)(PCy)(Cl)Ru═CHPh (2). The invention also provides novel regioregular polymers synthesized using the aforementioned methodology, wherein the polymers may be saturated, unsaturated, protected, and/or telechelic. An exemplary polymer is poly((vinyl alcohol)-alt-methylene)(MVOH).