Tungsten-imido catalysts for ring-opening metathesis...

Details Tungsten-imido catalysts for ring-opening metathesis... Tungsten-imido catalysts for ring-opening metathesis...

C - Chemistry, Metallurgy

08

F

C08F 4/69 (2006.01) C08F 4/78 (2006.01) C08F 112/34 (2006.01) C08G 61/08 (2006.01)

Patent

CA 2078093

b:Bc118.fm Bell Case 8 TUNGSTEN-IMIDO CATALYSTS FOR RING-OPENING METATHESIS POLYMERIZATION OF CYCLOOLEFINS Abstract Of Disclosure This invention relates to a two component catalyst system for the polymerization of metathesis polymerizable polycyclic cycloolefins, comprising (a) a tungsten-imido compound having the formula W(NR1)X4-x(OR2)x?Ly wherein x=0, 1, 2, 3 or 4; y=0 or 1; R1 and R2 are alkyl, phenyl, phenyl- substituted phenyl, phenylalkyl or halogen-substituted derivatives of alkyl, phenyl, phenyl-substituted phenyl or phenylalkyl; X=Br or Cl; where alkyl has 1 to 8 carbon atoms, phenyl substituted phenyl has 12-18 carbon atoms and phenylalkyl has 7 to 20 carbon atoms; and L is a donor ligand; and (b) an activator compound. The catalyst system is used to prepare thermoset molded articles having low levels of residual monomer.

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