Method for preparing active carrier particles of equal size...

Details Method for preparing active carrier particles of equal size... Method for preparing active carrier particles of equal size...

C - Chemistry, Metallurgy

08

F

C08F 4/02 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2109834

The active carrier particles of even size of the polymerization catalyst are prepared so that a melt of a complex composition is provided having the formula (I): MgCl2 nROH mED, in which ROH depicts an aliphatic alco- hol, R is a C1-C6 alkyl, ED de- picts an electron donor, n is 1 to 6 and m is 0 to I ; the melt pro- vided is fed to a nozzle (4); the melt is sprayed from the nozzle (4) to the spraying area (5), in which it is divided into fine mel droplets and possibly partly so- lidifies; the possibly partly so- lidified melt particles are trans- ferred to a cooled crystallization area (6), where they crystallize to solid carrier particles; and the solid carrier particles are rec- overed. The melt mentioned is sprayed through a nozzle (4), which is rotated or which has attached to it a member that ro- tates and throws melt outwards from the rotating center to the spraying area (5).

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