Process for the production of monohalide or dihalide metallocene compounds
US6987196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2002 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Jul 2, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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)n is a divalent bridging group between Cp and A; A is a cyclopentadienyl radical or O, S, NR2, PR2 wherein R2 is 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: T1Lw1 wherein T1 is a metal of groups 3–13 of the periodic table; L is halogen and w1 is equal to the oxidation state of the metal T1; T2Lw2 wherein T2 is a nonmetal element of groups 13–16 of the periodic table (new IUPAC version); and w2 is equal to the oxidation state of the element T2; O=T3Lw3 where T3 is a selected from the group consisting of C, P and S; O is an oxygen atom bonded to T3 trough a double bond; and w3 is equal to the oxidation state of the element T3 minus 2; R6C(O)L, wherein R6 is an hydrocarbon radical; L2 and HL.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.