Polymerizable compositions containing olefin metathesis catalysts and cocatalysts, and methods of use therefor
US5198511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1991 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Dec 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
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 PA1 (a) compounds of the formula EQU (L.sup.1) (L.sup.2)Q PA1 wherein PA2 Q represents Mo or W; PA2 L.sup.1 represents one to six CO (carbonyl) ligands; PA2 L.sup.2 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 L.sup.1 ; PA2 wherein the sum of the valence electrons of Q and the electrons contributed by the ligands L.sup.1 and L.sup.2 is 18, PA1 (b) at least one of cationic ruthenium and osmium-containing organometallic salts having at least one polyene ligand, and PA1 (c) [Ir(RO.sub.2 CHC=CHCO.sub.2 R).sub.2 Cl].sub.2 wherein each R independently is hydrogen or lower alkyl (C.sub.1 to C.sub.4), 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 t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.