Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1988-08-08
1990-08-14
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502111, 502113, 502120, 502125, 526114, 526115, 526125, C08F 464
Patent
active
049487701
ABSTRACT:
Disclosed is a method for making crystalline magnesium halide particles usable for preparing catalyst and usable in the polymerization of alpha olefins having the formula MgnEmXp * y ROH wherein y is a value greater than 0 and up to 12, and which comprises the steps of:
contacting the components of a magnesium compound of the formula MgnEmXp, wherein Mg is the magnesium component, n is a value from 0.25 to 6, E is a metal, m is either 0 or 1, X is a halogen, and p is a value between 2n and (a*m+2n) (wherein a is the valence of the metal E) with an alcohol of the formula ROH, therein forming a solution;
heating the solution to a temperature to a temperature at about the boiling point of the alcohol and maintaining the solution at a temperature sufficient to allow for the azeotroping of any water present;
contacting the heated solution with a volume of an inert hydrocarbon liquid therein causing the formation of crystalline particles, and
optionally melting the crystalline particles, and adding appropriate amounts of silica to the molten particles therein forming supported particles.
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Garvin Patrick P.
Shell Oil Company
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