Patent EP0418044A2 successfully refreshed from Google Patents.
EP0418044A2
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EP
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Metal complex compounds, process for preparation and method of use
Assignee: Dow Chemical Co
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Filing: 1990-09-12
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Granted: —
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Expires: 2010-09-12
Abstract
Abstract A monocyclopentadienyl or substituted monocyclopentadienyl metal complex containing compound useful as an addition polymerization catalyst corresponds to the formula: CpMX n ⁺A⁻ wherein: Cp is a single η⁵-cyclopentadienyl or η⁵-substituted cyclopentadienyl group optionally covalently bonded to M through a substituent; M is a metal of Group 3-10 or the Lanthanide Series of the Periodic Table bound in an η⁵ bonding mode to the cyclopentadienyl or substituted cyclopentadienyl group; X each occurrence is hydride or a moiety selected from halo, alkyl, aryl, silyl, germyl, aryloxy, alkoxy, amide, siloxy,and combinations thereof having up to 20 non-hydrogen atoms, neutral Lewis base ligands having up to 20 non-hydrogen atoms; or optionally one X together with Cp forms a metallocycle of up to 20 non-hydrogen atoms with M; n is 1 or 2 depending on the valence of M; and A⁻ is a noncoordinating, compatible anion of a Bronsted acid salt.
Inventors
- 👤 James C. Stevens
- 👤 David R. Neithamer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 21:37
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/28; C08; C08F; C08F10/00; C07F17/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/619; C08F4/61908; C08F4/6192; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
142 words
A monocyclopentadienyl or substituted monocyclopentadienyl metal complex containing compound corresponding to the formula: CpMX n ⁺A⁻ wherein: Cp is a single η⁵-cyclopentadienyl or η⁵-substituted cyclopentadienyl group optionally covalently bonded to M through a substituent; M is a metal of Groups 3-10 or the Lanthanide Series of the Periodic Table bound in an η⁵ bonding mode to the cyclopentadienyl or substituted cyclopentadienyl group; X each occurrence is hydride or a moiety selected from halo, alkyl, aryl, silyl, germyl, aryloxy, alkoxy, amide, siloxy, and combinations thereof having up to 20 non-hydrogen atoms, and neutral Lewis base ligands having up to 20 non-hydrogen atoms; or optionally one X together with Cp forms a metallocycle with M of up to 20 non-hydrogen atoms; n is 1 or 2 depending on the valence of M; and A- is a noncoordinating, compatible anion of a Bronsted acid salt.
Claim 2
Dependent Claim
142 words
A monocyclopentadienyl or substituted monocyclopentadienyl metal complex containing compound corresponding to the formula: CpMX n ⁺A⁻ wherein: Cp is a single η⁵-cyclopentadienyl or η⁵-substituted cyclopentadienyl group optionally covalently bonded to M through a substituent; M is a metal of Groups 3-10 or the Lanthanide Series of the Periodic Table bound in an η⁵ bonding mode to the cyclopentadienyl or substituted cyclopentadienyl group; X each occurrence is hydride or a moiety selected from halo, alkyl, aryl, silyl, germyl, aryloxy, alkoxy, amide, siloxy, and combinations thereof having up to 20 non-hydrogen atoms, and neutral Lewis base ligands having up to 20 non-hydrogen atoms; or optionally one X together with Cp forms a metallocycle with M of up to 20 non-hydrogen atoms; n is 1 or 2 depending on the valence of M; and A- is a noncoordinating, compatible anion of a Bronsted acid salt.
Claim 3
Dependent Claim
120 words
A compound as claimed in Claim 1, wherein Cp corresponds to the formula: wherein: R′ each occurrence is hydrogen or a moiety selected from halogen, alkyl, aryl, haloalkyl, alkoxy, aryloxy, silyl groups, and combinations thereof of up to 20 non-hydrogen atoms, or two or more R′ groups together form a fused ring system; and R˝ is R′ or a group that is covalently bonded to M of the formula: -Z-Y-, wherein Z is a divalent moiety comprising oxygen, boron, or a member of Group 14 of the Periodic Table of the Elements; and Y is a linking group covalently bonded to the metal comprising nitrogen, phosphorus, oxygen or sulfur, or optionally Z and Y together form a fused ring system.
Claim 4
Dependent Claim
52 words
A compound as claimed in Claim 2, wherein R˝ is: wherein: E each occurrence is carbon, silicon, or germanium; p is an integer from 1 to 4; Y′ is nitrogen or phosphorous; and R‴ each occurrence is alkyl, aryl, silyl or a combination thereof having up to 10 carbon or silicon atoms.
Claim 5
Dependent Claim
13 words
A compound as claimed in Claim 2, where R′ and R˝ are methyl.
Claim 6
Dependent Claim
17 words
A compound as claimed in any one of the preceding claims, wherein M is titanium or zirconium.
Claim 7
Dependent Claim
154 words
A compound as claimed in Claim 5 corresponding to the formula: wherein: M is zirconium or titanium; Cp* is a cyclopentadienyl or substituted cyclopentadienyl group bound in an η⁵ bonding mode to M; Z is SiR*₂, CR*₂, SiR*₂SiR*₂, CR*₂CR*₂, CR*=CR*, CR*₂SiR*₂, or GeR*₂; Y is a nitrogen or phosphorus containing group corresponding to the formula -N(R˝˝)- or -P(R˝˝)-; wherein: R* each occurrence is hydrogen or a moiety selected from alkyl, aryl, silyl, halogenated alkyl, halogenated aryl groups and combinations thereof having up to 20 non-hydrogen atoms, R˝˝ is C₁₋₁₀ alkyl or C₆₋₁₀ aryl, or two or more R* groups or one or more R* groups and R˝˝ together form a fused ring system of up to 30 non-hydrogen atoms; X each occurrence is halo, or an alkyl, aryl, alkoxy, or aryloxy group of up to 20 carbons; n is 1 or 2; and A- is a noncoordinating, compatible anion of a Bronsted acid salt.
Claim 8
Dependent Claim
18 words
A compound as claimed in any one of the preceding claims, wherein X is C₁₋₄ alkyl or alkoxy.
Claim 9
Dependent Claim
15 words
A compound as claimed in any one of the preceding claims, wherein n is 2.
Claim 10
Dependent Claim
16 words
A compound as claimed in any one of the preceding claims, wherein A is tetrakis-pentafluorophenyl borate.
Claim 11
Dependent Claim
63 words
A process for preparing a compound as claimed in Claim 1; comprising contacting a first component corresponding to the formula CpMX n+1 wherein Cp, M, X and n are as defined in Claim 1 with a second component corresponding to the formula [L-H]⁺[A]⁻ wherein L is a neutral Lewis base and A is as defined in Claim 1 in an inert, aprotic solvent.
Claim 12
Dependent Claim
59 words
A process as claimed in Claim 10, wherein the second component corresponds to the formula [L-H]⁺[BQ₄]⁻ wherein L is a neutral Lewis base and Q independently each occurrence is selected from hydride, dialkylamido, halide, alkoxide, aryloxide, hydrocarbyl, substituted hydrocarbyl and organometalloid of up to 20 carbons, with the proviso that in not more than one occurrence is Q halide.
Claim 13
Dependent Claim
12 words
A process according to Claim 11 wherein Q each occurrence is pentafluorophenyl.
Claim 14
Dependent Claim
42 words
A process as claimed in Claim 12, wherein the first component is a pentamethylcyclopentadienyl titanium dialkoxide or a pentamethylcyclopentadienyl titanium dialkyl having from 1 to 4 carbons on the alkoxide or alkyl group and the second component is a trialkylammonium tetrakis-pentafluorophenyl borate.
Claim 15
Dependent Claim
20 words
The use of a compound as claimed in any one of Claims 1 to 9 as an addition polymerization catalyst.
Claim 16
Dependent Claim
43 words
An addition polymerization process for preparing a polymer by contacting one or more addition polymerizable monomers with a coordination polymerization catalyst under addition polymerization conditions, characterized in that the catalyst is a compound as defined in any one of Claims 1 to 9.
Claim 17
Dependent Claim
17 words
A process as claimed in Claim 15 wherein said monomer is an olefin, diolefin or acetylenic compound.
Claim 18
Dependent Claim
17 words
A process as claimed in Claim 16, wherein ethylene is homopolymerized or copolymerized with a C₃-C₈ alpha-olefin.
Claim 19
Dependent Claim
20 words
A process as claimed in any one of Claims 15 to 17, wherein the catalyst is formed in situ .
References Cited (Backward Citations)
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