CPC C08F 110/02 (2013.01) | 9 Claims |
1. A process for preparation of a catalyst for polymerization of olefins, the process comprising:
(a) contacting a liquid magnesium complex, an electron donor compound and a titanium halide compound to form a solution at a temperature ranging from 0-25° C. for 1-10 hours;
(b) precipitating the solution to obtain catalyst particles by
(i) providing a first temperature ramp of 0.1-10° C./minute at a temperature ranging from 5-25° C.
(ii) holding for at least 15 minutes;
(iii) providing a second temperature ramp of 0.1-10° C./minute at a temperature ranging from 25-45° C.;
(iv) holding for at least 30 minutes;
(v) providing a third temperature ramp of 0.1-10° C./minute at a temperature ranging from 45-110° C.; and
(vi) holding for at least 15 minutes at a temperature of 75° C.; and
(c) washing the catalyst particles with an inert solvent to obtain a solid uniform catalyst.
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