PROCESS FOR THE PREPARATION OF A CATALYST FOR OLEFIN POLYMERIZATION
IMPROVEMENTS OR MODIFICATIONS OF EARLIER PROCESS FOR PREPARING CHROMIUM-CONTAINING COMPOUNDS, SUCH AS, FOR EXAMPLE, CHROMIUM PYRROLIDES, BY FORMING A MIXTURE OF A CHROMIUM SALT, A METAL AMIDE, PARTICULARLY A PYRROLIDE, AND AN ELECTRON PAIR DONOR SOLVENT, SUCH AS, FOR EXAMPLE, AN ETHER, AND REACTION...
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