Appeal No. 95-3484
Application 08/098,236
recited in those claims. The Stearns copolymers are prepared
using a two-component catalyst wherein one component is an
aluminum alkyl halide and the other component can be a
vanadium compound having the formula VOCl (RO) , wherein R is
3-n n
an alkyl radical and n is 0 to 2 (col. 4, lines 14-24).
Appellants also use a two-component catalyst wherein one
component is an organoaluminum compound which can be an
aluminum alkyl halide, and the other component can be a
vanadium compound having the formula VO(OR) X , where R is an
n 3-n
aliphatic hydrocarbon group having 1-20 carbon atoms, X is a
halogen atom, and n is a number from 0 to 3 (specification,
page 3, line 27 - page 4, line 3; page 5, lines 1-23). The
Al/V ratio of Stearns’ catalyst is 1-14 (col. 6, lines 18-19),
whereas that of appellants is 2-50, preferably 3-20
(specification, page
7, lines 18-21). Stearns’ preferred reaction temperature is
15-55EC (col. 4, lines 59-60), whereas that of appellants is
20-80EC (specification, page 8, lines 21-23), and both
reactions are carried out in the liquid phase (Stearns, col.
-9-9
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