| abstract |
The invention relates to the polymerization catalyst industry. Catalyst obtained by dispersion on a hardly reducible mineral support, such as silica, of the reaction product of a chromium carboxylate with an organic nitrogen compound capable of forming a complex with chromium, followed by activation of the mixture at high temperature, under a non-oxidizing atmosphere. Application to the polymerization and copolymerization of 1-olefins. |