C | CHEMISTRY; METALLURGY |
08 | ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON |
F | MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS |
4 | Polymerisation catalysts |
42 | Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors |
44 | selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides |
60 | together with refractory metals, iron group metals, platinum group metals, manganese, technetium, rhenium, or compounds thereof |
62 | Refractory metals or compounds thereof |
64 | Titanium, zirconium, hafnium, or compounds thereof |
659 | Component covered by group C08F4/6455 |
6592 | containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring |