Appeal No. 95-2745
Application 08/008,256
We disagree with the examiner’s position. Manyik ('099 and '550) set forth a
minimum of five (5) process parameters that can be varied to vary the “properties of the
polyolefin produced." As noted by appellants, there are a substantial number of important
properties for polyolefins, (Reply brief, page 3). We agree with appellants that the Manyik
('099 and '550) statements would include a large number of process variables and
properties. Properties of polymers are influenced by their structure and thus, there is
some interrelationship between polymer structure and polymer properties. For example,
it is known that melt index and solubility are inversely proportional to the molecular weight
of the polymer. Manyik ('099 and '550) note that the melt index of the polymer product can
be controlled by controlling the temperature of the process. However, contrary to the
examiner’s position, Manyik ('099 and '055) do not teach how MWD interrelates with any
of the named process parameters. The examiner's position that it would have been
obvious to optimize the process of Manyik ('990 and '550) by selecting a change in ratio of
the catalysts employed is unsupported since the examiner has failed to adduce evidence
of a relationship between the ratio of catalysts employed and MWD.
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