Ruthenium polymerisation catalysts
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United States of America Patent
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Nov 14, 2017
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app pub date -
Sep 28, 2012
filing date -
Sep 28, 2011
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Abstract
Cis and trans ruthenium complexes that can be used as catalysts for ring opening metathesis polymerization (ROMP) are described. The complexes are generally square pyramidal in nature, having two anionic ligands X. Corresponding cationic complexes where one or both of the anionic ligands X are replaced by a non-co-ordinating anionic ligand are also described. Polymers such as polydicyclopentadiene (PDCPD) can be prepared using the catalysts.
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