C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 61/08 (2006.01)
Patent
CA 2124349
2124349 9313171 PCTABS00024 Polymerization of ring-strained cyclic olefins takes place in the presence of a one-part or two-part catalyst which is air and moisture stable and which comprises a transition metal-containing compound. The one-part transition metal-containing catalyst is selected from the group consisting of (a) compounds of the formula: (L1) (L2)Q wherein Q represents Mo or W; L1 represents one to six CO (carbonyl) ligands; L2 represents none to 5 ligands, each of which is a non-ionic compound or unit of a polymer which can be the same or different, each contributes two, four, or six electrons to the metal and is different from L1; wherein the sum of the valence electrons of Q and the electrons contributed by the ligands L1 and L2 is 18, (b) at least one of cationic ruthenium and osmium-containing organometallic salts having at least one polyene ligand, and (c) [Ir(RO2CHC=CHCO2R)2Cl]2 wherein each R independently is hydrogen or lower alkyl (C1 to C4), provided that the oxidation state of the metal is in the range of +3 to 0, and that cocatalysts containing C-halogen bonds are not present. The two-part catalyst comprises (a) a transition metal-containing catalyst, provided that the oxidation state of the transition metal is in the range of +3 to 0, and (b) a cocatalyst selected from the group consisting of (i) terminal or silyl alkynes, (ii) organosilanes containing at least one of .alpha. and .beta. groups, (iii) oxidative salts or oxidative compounds containing an oxygen atom to non-oxygen atom double bond, and (iv) heteroatom-containing alkenes. The polymerized composition is useful to provide molded articles, elastomers, dielectric supports, ionophoric or biologically active materials, composite materials, and the like.
Boardman Larry D.
Brown-Wensley Katherine A.
Gozum John E.
Lamanna William M.
Mccormick Fred B.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
Polymerizable compositions containing olefin metathesis... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymerizable compositions containing olefin metathesis..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymerizable compositions containing olefin metathesis... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1585207