Appeal 2007-0075
Application 10/759,299
I. APPEALED SUBJECT MATTER
The subject matter on appeal is directed to conjugated diene polymers
and a method of producing the same (Specification 1). The conjugated diene
polymers produced by the method are said to have “excellent wear resistance
and mechanical properties and a reduced cold flow…(id.)” This appealed
subject matter is related to the subject matter considered in Appeal No.
2002-0166 (Application No. 09/033,685) decided on February 4, 2003.
Details of the appealed subject matter are recited in representative claims 1
and 20, which are reproduced below:
1. A method of producing a conjugated diene polymer which
comprises polymerizing a conjugated diene compound with a catalyst
consisting essentially of the following components (a) to (d) in an organic
hydrocarbon solvent; and then reacting with at least one compound selected
from the group consisting of the following components (i) and (j).
component (a): a compound containing a rare earth element of atomic
number 57-71 in the Periodic Table or a compound obtained by reacting the
compound with a Lewis base;
component (b): a compound containing at least one halogen atom;
component (c): an aluminxane;
component (d): an organoaluminum compound represented by the
following general formula (1):
AIR1R2R3 (I)
wherein R1 and R2 are the same or different and are a hydrocarbon
group having a carbon number of 1-10 or a hydrogen atom, and R3 is a
hydrocarbon group having a carbon number of 1-10 provided that R3 is the
same as or different from R1 ro R2;
2
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