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Here are some champion documents of our database: The longest title: PRODUCTION OF A 5-(2-CHLORO-4-(TRIFLUOROMETHYL)PHENOXY)-2-NITROBENZOIC ACID OR 7-CHLORO-3-METHYLLQUINOLINE-8-CARBOXYLIC ACID-TOLERANT PLANT BY EXPRESSING AN EXOGENOUS 5-(2-CHLORO-4-(TRIFLUOROMETHYL)PHENOXY)-2-NITROBENZOIC ACID OR 7-CHLORO-3-METHYLLQUINOLINE-8-CARBOXYLIC ACID-BINDING ANTIBODY IN THE PLANT Patent No. 6472587 Inventors: Lerchl, Jens; Moller, Achim; Schmidt, Ralf-Michael;
Schiffer, Helmut; Rabe, Udo; Conrad, Udo This invention relates to metallocene compositions and their use in
the preparation of catalyst systems for olefin polymerization,
particularly propylene polymerization. In one embodiment, the
metallocenes of the present invention may be represented by the formula:
##STR1## wherein: M is a metal of Group 4, 5, or 6 of the Periodic
Table; R.sup.1 and R.sup.2 are identical or different, and are one of a
hydrogen atom, a C.sub.1 -C.sub.10 alkyl group, a C.sub.1 -C.sub.10
alkoxy group, a C.sub.6 -C.sub.10 aryl group, a C.sub.6 -C.sub.10
aryloxy group, a C.sub.2 -C.sub.40 alkenyl group, a C.sub.7 -C.sub.40
arylalkyl group a C.sub.7 -C.sub.40 alkylaryl group, a C.sub.8 -C.sub.40
arylalkenyl group, or a halogen atom, or are a conjugated diene which is
optionally substituted with one or more hydrocarbyl,
tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups,
said diene having up to 30 atoms not counting hydrogen; R.sup.5 and
R.sup.6 are identical or different, are one of a hydrogen atom, a
halogen atom, a C.sub.1 -C.sub.10 alkyl group, which may be halogenated,
a C.sub.6 -C.sub.10 aryl group, which may be halogenated, a C.sub.2
-C.sub.10 alkenyl group, a C.sub.7 -C.sub.40 -arylalkyl group, a C.sub.7
-C.sub.40 alkylaryl group, a C.sub.8 -C.sub.40 arylalkenyl group, a
--NR.sub.2.sup.15, --SR.sup.15, --OR.sup.15, --OSiR.sub.3.sup.15 or
--PR.sub.2.sup.15 radical, wherein: R.sup.15 is one of a halogen atom, a
C.sub.1 -C.sub.10 alkyl group, or a C.sub.6 -C.sub.10 aryl group;
R.sup.7 is ##STR2## wherein: R.sup.17 to R.sup.24 are as defined for
R.sup.1 and R.sup.2, or two or more adjacent radicals R.sup.17 to
R.sup.24, including R.sup.20 and R.sup.21, together with the atoms
connecting them form one or more rings; M.sup.2 is carbon, silicon,
germanium or tin; the radicals R.sup.3, R.sup.4, and R.sup.10 are
identical or different and have the meanings stated for R.sup.5 and
R.sup.6 ; or two adjacent R.sup.10 radicals can be joined together to
form a ring system. Alkyl refers to straight or branched chain
substituents. Halogen (halogenated) refers to fluorine, chlorine,
bromine or iodine atoms, preferably fluorine or chlorine. The
metallocene compositions may also be represented by the formula:
##STR3## wherein: M.sup.1 is selected from the group consisting of
titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium,
molybdenum and tungsten; R.sup.1 and R.sup.2 are identical or different,
and are one of a hydrogen atom, a C.sub.1 -C.sub.10 alkyl group, a
C.sub.1 -C.sub.10 alkoxy group, a C.sub.6 -C.sub.10 aryl group, a
C.sub.6 -C.sub.10 aryloxy group, a C.sub.2 -C.sub.10 alkenyl group, a
C.sub.2 -C.sub.40 alkenyl group, a C.sub.7 -C.sub.40 arylalkyl group, a
C.sub.7 -C.sub.40 alkylaryl group, a C.sub.8 -C.sub.40 arylalkenyl
group, an OH group or a halogen atom, or are a conjugated diene which is
optionally substituted with one or more hydrocaxbyl,
tri(hydrocarbyl)silyl groups or hydrocarbyl,
tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30
atoms not counting hydrogen; R.sup.3 are identical or different and are
each a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 alkyl group
which may be halogenated, a C.sub.6 -C.sub.10 aryl group which may be
halogenated, a C.sub.2 -C.sub.10 alkenyl group, a C.sub.7 -C.sub.40 -arylalkyl
group, a C.sub.7 -C.sub.40 alkylaryl group, a C.sub.8 -C.sub.40
arylalkenyl group, a --NR'.sub.2, --SR', --OR', --OSiR'.sub.3 or
--PR'.sub.2 radical, wherein: R' is one of a halogen atom, a C.sub.1
-C.sub.10 alkyl group, or a C.sub.6 -C.sub.10 aryl group; preferably
R.sup.3 is not a hydrogen atom; R.sup.13 is represented by the formula:
##STR4## wherein: R.sup.17 to R.sup.24 are as defined for R.sup.1 and
R.sup.2, or two or more adjacent radicals R.sup.17 to R.sup.24,
including R.sup.20 and R.sup.21, together with the atoms connecting them
form one or more rings; preferably, R.sup.17 to R.sup.24 are hydrogen;
M.sup.2 is carbon, silicon, germanium or tin, preferably silicon; and
R.sup.8, R.sup.9, R.sup.10, R.sup.11 and R.sup.12 are identical or
different and have the meanings stated for R.sup.4 to R.sup.7. Inventors: Kuchta, Matthew C.; Stehling, Udo M.; Li, Robert T.;
Haygood, Jr., William T.; Burkhardt, Terry J. |
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