Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-03-01
2005-03-01
Bell, Mark L. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S169000, C568S851000, C526S124300, C526S124500, C526S124200
Reexamination Certificate
active
06861385
ABSTRACT:
A process for preparing spherical support particles used in the preparation of catalytic components for the polymerization of olefins by (a) forming an emulsion of an adduct of a Mg dihalide and a Lewis base compound in a liquid medium, and (b) cooling the emulsion by transferring it into a cooling bath containing a cooling liquid in motion wherein the cooling liquid is moving inside a tubular zone and the ratio Ve/Vrefof the velocity (Ve) of the emulsion coming from step (a) to the velocity of the cooling liquid (Vref) of step (b) is between 0.25 and 4. The resulting spherical support particles have a very narrow size distribution and particularly regular morphology.
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Arletti Arrigo
Fait Anna
Basell Poliolefine Italia S.p.A.
Bell Mark L.
Brown Jennine
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