Patent ID: 6153553
Filing Date: 2000-11-28
Classification: B01J,Y10S

Abstract:
An olefin polymerization catalyst prepared by depositing an active catalytic component upon an amorphous aluminophosphate having a phosphorus to aluminum mole ratio of less than one, said aluminophosphate having been prepared by a process which comprises:(a) forming a first acidic aqueous solution of Al.sup.+3 and PO.sub.4.sup.-3 of the phosphorus ions to the aluminum ions is 1:1 or less;(b) forming a second basic aqueous solution capable of neutralizing said first aqueous solution;(c) contacting said first and second aqueous solutions in a mixer-reactor under mixing conditions with sufficient shear to produce an alumino-phosphate precipitate having In its microstructure both sheets and spheres of aluminophosphate, and wherein the apparent Average shear rate is at least 0.5.times.10.sup.4 sec.sup.-1.