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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0737611 (1991-07-30) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 511 인용 특허 : 0 |
Ionic catalyst compositions can be prepared by combining two components. The first component is a bis(cyclopentadienyl) Group IV-B metal complex containing at least one ligand which will combine irreversibly with the second component or at least a portion thereof such as a cation portion thereof. Th
Ionic catalyst compositions can be prepared by combining two components. The first component is a bis(cyclopentadienyl) Group IV-B metal complex containing at least one ligand which will combine irreversibly with the second component or at least a portion thereof such as a cation portion thereof. The second component comprises a cation which will irreversibly react with at least one ligand on the Group IV-B metal complex and a non-coordinating anion. The combination of the two components produces an ionic catalyst composition comprising a cationic bis(cyclopentadienyl) Group IV-B metal complex which has a formal coordination number of 3 and a 4+valence charge and the aforementioned non-coordinating anion. The anion is (i) labile and can be displaced by an olefin, diolefin or acetylenically unsaturated monomer; (ii) has a molecular diameter about or greater than 4 angstroms; (iii) forms stable salts with reducible Lewis acids and protonated Lewis bases; (v) has a negative charge delocalized over the framework on the anion or within the core thereof; (v) is not a reducing or oxidizing agent; and (vi) is a relatively poor nucleophile. These ionic catalyst compositions can be used to polymerize a
A composition of matter comprising a Group IV-B metal cation non-coordination anion, which composition is represented by one of the following general formulae: {[(A－Cp)MX1]+}d[B′]d-1. {[A－Cp)MX5L′]+}d[B′]d-2. wherein (A－Cp) is either (Cp)(Cp′) or Cp－A′-Cp′; Cp and Cp′are the same or different cyclo
A composition of matter comprising a Group IV-B metal cation non-coordination anion, which composition is represented by one of the following general formulae: {[(A－Cp)MX1]+}d[B′]d-1. {[A－Cp)MX5L′]+}d[B′]d-2. wherein (A－Cp) is either (Cp)(Cp′) or Cp－A′-Cp′; Cp and Cp′are the same or different cyclopentdienyl rings substituted with from zero to five substituent groups S, each substituent group S being, independently, a radical group which is a hydrocarbyl, substituted-hydrocarbyl, halocarbyl, substituted-halocarbyl, hydrocarbyl-substituted organometalloid, halocarbyl-substituted organometalloid or halogen radicals, or Cp and Cp′are cyclopentadienyl rings in which any two adjacent S groups are joined forming a C4 to C20 ring to give a saturated or unsaturated polycyclic cyclopentadienyl ligand; and A′is a bridging group restricting rotation of the Cp and Cp′rings; M is titanium, zirconium or hafnium; L′is neutral Lewis base; X1 is hydride radical, hydrocarbyl radicals, substituted-hydrocarbyl radicals hydrocarbyl-substituted organometalloid radicals or halocarbyl-substituted organometalloid radical; X5 is a hydride radical, hydrocarbyl radical or substituted-hydrocarbyl radical, halocarbyl radical or substituted organometalloid radicals, which radical may optionally be covalently bonded to both M and L′; and B′is a chemically stable, non-nucleophilic substituted anionic complex having a molecular diameter about or greater than 4 angstroms; and d is an integer representing the charge of B′.
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