Interference 103,482
formula RCH=CHR’ in which R and R’ are identical or different
and are an alkyl radical having 1 to 14 carbon atoms”
(Application 08/147,006, spec., p. 3, l. 5-8). The complete
statement is reproduced below (Application 08/147,006, spec.,
p. 3, l. 5, to p. 4, l. 25):
The present invention accordingly provides a syndio-
isoblock polymer of a 1-olefin of the formula RCH=CHR’
in which R and R’ are identical or different and are
an alkyl radical having 1 to 14 carbon atoms or R and R’,
with the carbon atoms joining them, form a ring, and the
said polymer has molecular chains in which syndiotactic
and isotactic sequences are present and the sequence
length is 3 to 50 monomer units.
Furthermore, the invention provides a process for the
preparation of the abovementioned syndio-isoblock
polymers
by polymerization of a 1-olefin of the formula RCH = CHR’
in which R and R’ have the abovementioned meaning, at a
temperature of -60 to 100 C, a pressure of 0.5 to 100 bar,O
in solution, suspension or in the gas phase, in the
presence
of a catalyst which is composed of a metallocene and an
aluminoxane, wherein the metallocene is a compound of the
formula I . . . .
We find that all compounds of formula RCH=CHR’ in which R
and R’ are identical or different and each is an alkyl radical
having 1 to 14 carbon atoms, or R and R’, with the carbon
atoms joining them, form a ring, are olefins. However, we
find that none of the compounds of formula RCH=CHR’ in which R
and R’ are identical or different and each is an alkyl radical
having 1
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Last modified: November 3, 2007