Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2008-10-01
2011-12-13
Lu, Caixia (Department: 1765)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S103000, C502S120000, C502S152000, C526S128000, C526S129000, C526S133000, C526S160000, C526S943000
Reexamination Certificate
active
08076259
ABSTRACT:
A process for the preparation of a catalyst paste comprising the following steps:a) obtaining a slurry in an organic solvent containing at least:a1) a support bearing functional groups;a2) a trialkylaluminum of formula (Ra)3Al wherein Ra, equal to or different from each other is a C1-C20hydrocarbon radical optional containing heteroatoms belonging to groups 13-17 of the periodic table of the elements;a3) a compound of formula (I)in-line-formulae description="In-line Formulae" end="lead"?(R1)x-A-(OH)y (I)in-line-formulae description="In-line Formulae" end="tail"?wherein:A is an atom of group 13 or 15 of the Periodic Table; R1equal to or different from each other, are C1-C40hydrocarbon radicals optionally containing heteroatoms belonging to groups 13-17 of the periodic table of the elements; Y is 1 or 2; X is 1 or 2; provided that x+y=3;a4) a transition metal organometallic compound;b) washing the resulting slurry one or more times with oil.
REFERENCES:
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patent: 2003/0004052 (2003-01-01), Lynch et al.
patent: 2006/0166813 (2006-07-01), Kratzer
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patent: 2007/0155919 (2007-07-01), Okumura et al.
Heike Gregorius
Richter Bodo
Basell Polyolefine GmbH
Dilworth IP LLC
Lu Caixia
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