Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2006-10-03
2006-10-03
Nazario-Gonzalez, Porfirio (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S012000, C556S019000, C556S052000, C556S053000
Reexamination Certificate
active
07115761
ABSTRACT:
A process for preparing dihalide or monohalide metallocene compounds comprising contacting a compound of formula (II) (Cp)(ZR1m)n(A)rML′y(II) wherein Cp is a cyclopentadienyl radical; (ZR1m)nis a divalent bridging group between Cp and A; A is a cyclopentadienyl radical or O, S, NR2, PR2wherein R2is an hydrocarbon radical, M is zirconium, titanium or hafnium. L′ is an hydrocarbon radical, r ranges from 0 to 2 and y is equal to 4; with an halogenating agent selected from the group consisting of: T1Lw1wherein T1is a metal of groups 3–13 of the periodic table; L is halogen and w1is equal to the oxidation state of the metal T1; T2Lw2wherein T2is a nonmetal element of groups 13–16 of the periodic table (new IUPAC version); and w2is equal to the oxidation state of the element T2; O=T3Lw3where T3is a selected from the group consisting of C, P and S; O is an oxygen atom bonded to T3through a double bond; and w3is equal to the oxidation state of the element T3minus 2; R6C(O)L, wherein R6is an hydrocarbon radical; L2and HL.
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Balboni Davide
Resconi Luigi
Basell Polyolefine GmbH
Nazario-Gonzalez Porfirio
Raphael Jarrod N.
Reid William R.
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