Process of preparing a polymerization catalyst and preparation of ethylene polymers with this catalyst

Claim 1

Process of preparing a chromium-containing catalyst component, which upon activation with heat at a temperature of from 200° to 1200° C. will effect the polymerization of alpha-olefins, comprising depositing jointly or subsequently from solution onto an inert, particulate, inorganic support the following components: (a) a first component which is a chromium complex comprising the reaction product of: (1) a chromium compound, and (2) a group II or III element hydrocarbyl compound wherein the hydrocarbyl group contains 1-20 carbon atoms; and (b) at least one second component selected from the group consisting of (1) a transition metal complex which is the reaction product of: (a) a transition metal compound wherein the metal is selected from the group consisting of nickel, molybdenum, and titanium, and (b) a group II or III metal hydrocarbyl compound wherein the hydrocarbyl groups contain 1-20 carbon atoms, and (2) a transition metal alkoxide or carboxylic acid salt wherein the metal is selected from the group consisting of nickel, molybdenum, and titanium.