METAL COMPOUNDS CONTAINING NEUTRAL MULTIDENTATE AZACYCLIC LIGANDS CATALYSTS USING THEM OLEFIN POLYMERIZATION METHODS USING THEM

摘要

The present invention relates to complexes of the cyclic polyhydric aza neutral ligands, and mixtures thereof and a Group 3-10 metal and a lanthanide. The ligands formula R _a -A- (L) _b a, In the formula R is hydrogen or hydrocarbyl, A is silicon, germanium, tin or lead, and each L is pyrazolyl, triazolyl or pyridazinyl group tetra-O and a a = 0 to 2, b = 2 to 4, a + b = 4. If the active body normal activity, the metal complex is to polymerize an olefin.