Interference No. 103,303
where n is at least 5, operating under conditions where the
ratio of butene to the total constitutional monomer units of
the copolymer is from 1 to 24 mole %, and the polymerization
is conducted in the liquid phase, at a temperature of from -
100EC to 100EC.
Galimberti et al.'s claim 2 is directed to a process for
the preparation of copolymers of propylene and 1-butene
comprising the polymerization of gaseous mixtures of propylene
and 1-butene with a hafnium or zirconium dichloride catalyst
wherein the 1-butene molar content in the gas mixture being
continuously fed is from 1.5 to 10% and the polymerization is
conducted in the liquid phase at a temperature of from -30E to
70EC.
Asanuma et al.'s claim 16 is directed to a process for
the preparation of copolymers of propylene and butene
comprising the polymerization of propylene and 1-butene with
the same hafnium or zirconium dichloride catalyst as claimed
by Galimberti et al. wherein the ratio of butene to the total
constitutional monomer units of the copolymer is 1 to 24 mole
% and the polymerization is conducted in the liquid phase at a
temperature of from -100E to 100EC.
On page 15 of its main brief, the party Galimberti et al.
states:
-22-
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