US 4,392,983 A · Transition metal composition, production and use

Abstract

A transition metal composition has the composition M.sub.m,X.sub.p,TYn'Z where M is a metal of Groups Ib, IIa, IIIb, VIIa or VIII of the Periodic Table, X is an anion, T is a transition metal of Groups IVA--VIA of the Periodic Table, Y is an anion, Z is a melt-producing compound, m' is greater than zero and less than 100, n' is greater than zero and less than 8 (m'+1), and p' is m' x(valency of M)/(valency of X). The compositions of this type may be transformed into a liquid by heating and the hot liquid sprayed and the spray cooled. The sprayed material has a useful particle form and may be used as a component of a polymerization catalyst to polymerize an unsaturated monomer such as ethylene.

Claims12

Dependent claims

A process for the production of a transition metal composition which process comprises spraying a material which comprises a hot single phase liquid and cooling the spray so formed so as to obtain essentially spheroidal particles characterised in that the said single phase liquid has a composition represented by the general formula:

M.sub.m X.sub.p TY.nZ (I)
where
M, where present, represents at least one metal of Groups Ib, IIa, IIIb, VIIa, VIII or the lanthanide series of the Periodic Table,
X, where present, represents at least one anion,
T represents at least one transition metal of Groups IVA, VA or VIA of the Periodic Table,
Y represents at least one of the following atoms or groups:
halide, oxyhalide, amino, alkoxide, thioalkoxide, carboxylate or sulphonate in an amount to satisfy the valency which T has in the composition,
Z, where present, represents at least one melt-producing compound which, on heating with the transition metal compound TY, forms a single phase liquid,
m is zero or a number less than 100;
n is zero or a number less than 8 (m+one);
and ##EQU3##

8 more elements

Dependencies are inferred from the claim text.

Transition metal composition, production and use

Life of this patent

Transition metal composition, production and use

Life of this patent

Abstract

Claims12