Appeal No. 1999-1832
Application No. 08/474,233
APPENDIX
Claim 14
14. A process for the polymerization of propylene
comprising:
(a) selecting a conventional Ziegler-Natta
catalyst component consisting essentially of
about 1.5-6.0% by weight or [sic, of]
titanium, about 10-20% by weight of
magnesium, about 40-70% by weight of a halide
selected from the group consisting of
chlorine, bromine, and iodine; about 5-25% by
weight of a polycarboxylic ester selected
from the group consisting of the esters of
aliphatic, aromatic and alicyclic
polycarboxylic acids; and about 0.1-2.5% by
weight of an organic phosphorus compound
selected from the group consisting of
hydrocarbon esters of phosphoric acid and
phosphorus acid wherein each hydrocarbon
group has 1 to 6 carbon atoms, said catalyst
component being prepared by a process having
the following steps:
a) dissolving a magnesium halide compound
selected from the group consisting of magnesium
halide complexes of magnesium halide with water or
alcohol and derivatives of magnesium halide
wherein a halogen atom is replaced by a
hydrocarboxyl group or a halohydrocarboxyl group
in a solvent mixture consisting of an organic
epoxy compound, selected from the group consisting
of oxides of aliphatic olefins and diolefins,
oxides of halogenated aliphatic olefins and
diolefins and glycidyl ethers, all having 2 to 8
carbon atoms, and an organic phosphorus compound
selected from the group consisting of alkyl
phosphates, aryl phosphates, aralkyl phosphates,
12
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