Latent photoactivatable precatalysts for metathesis polymerization
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United States of America Patent
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Oct 16, 2012
Grant Date -
Jan 6, 2011
app pub date -
Jan 16, 2009
filing date -
Feb 8, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
Latent photoactivatable precatalysts are provided for metathesis polymerization and has the general formula (Ru(NHC)n(X1)m(L)0p+((X2)−)p. Wherein NHC is an N-heterocyclic carbene, n=1 or 2; X1 is a C1-C18 mono or polyhalogenized carbolic acid or trifluoromethane sulfate; X2 is a C1-C18 mono or polyhalogenized carbolic acid, trifluoromethane sulfate, tetrafluoroborate, hexafluorophosphate, or hexafluoroantimonate; m=0, 1, or 2 and L=a C4-C18 carbolic acid nitrile or a C4-C18 carbolic acid di or trinitrile; o=6−n−m or 5−n−m and p=2−m.
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