US4665046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organoactinide polymer catalysts
Assignee: Dow Chemical Co
•
Filing: 1985-10-21
•
Granted: 1987-05-12
•
Expires: 2005-10-21
Abstract
Abstract The specification discloses pentaalkylcyclopentadienyl actinide complexes and their use as catalysts for polymerizing lower molecular weight alkenes.
Inventors
- 👤 Richard E. Campbell, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:08
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/941
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
62 words
A catalyst for polymerizing lower molecular weight alkenes comprising: a pentaalkylcyclopentadienyl actinide complex having up to 10 carbons in each alkyl group and having the following general formula: ##STR9## Where: represents an actinide metal; Cp' represents pentaalkylcyclopentadienyl; and X, Y and Z represent alkyl, aryl, and halide ligands, but specifically excluding any ligand with beta hydrogen, and X may be another Cp'.
Claim 2
Dependent Claim
62 words
A catalyst for polymerizing lower molecular weight alkenes comprising: a pentaalkylcyclopentadienyl actinide complex having up to 10 carbons in each alkyl group and having the following general formula: ##STR9## Where: represents an actinide metal; Cp' represents pentaalkylcyclopentadienyl; and X, Y and Z represent alkyl, aryl, and halide ligands, but specifically excluding any ligand with beta hydrogen, and X may be another Cp'.
Claim 3
Dependent Claim
11 words
The catalyst of claim 1 which comprises a bis-pentamethylcyclopentadienyl actinide complex.
Claim 4
Dependent Claim
16 words
The catalyst of claim 2 in which the other ligands of said complex are alkyl ligands.
Claim 5
Dependent Claim
14 words
The catalyst of claim 3 in which said alkyl ligands are compact alkyl groups.
Claim 6
Dependent Claim
13 words
The catalyst of claim 4 in which said alkyl groups are methyl groups.
Claim 7
Dependent Claim
12 words
The catalyst of claim 5 in which said actinide metal is uranium.
Claim 8
Dependent Claim
12 words
The catalyst of claim 2 in which said actinide metal is uranium.
Claim 9
Dependent Claim
16 words
The catalyst of claim 7 in which the other ligands of said complex are alkyl ligands.
Claim 10
Dependent Claim
14 words
The catalyst of claim 8 in which said alkyl ligands are compact alkyl groups.
Claim 11
Dependent Claim
73 words
A catalyst combination for polymerizing lower molecular weight alkenes comprising: a pentaalkylcyclopentadienyl actinide complex catalyst, having up to 10 carbons in each alkyl group, mixed with an organo metallic catalyst, said pentaalkylcyclopentadienyl actinide complex having the following general formula: ##STR10## where: represents an actinide metal; Cp' represents pentaalkylcyclopentadienyl; and X, Y and Z represent alkyl, aryl, and halide ligands, but specifically excluding any ligand with beta hydrogen, and X may be another Cp'.
Claim 12
Dependent Claim
73 words
A catalyst combination for polymerizing lower molecular weight alkenes comprising: a pentaalkylcyclopentadienyl actinide complex catalyst, having up to 10 carbons in each alkyl group, mixed with an organo metallic catalyst, said pentaalkylcyclopentadienyl actinide complex having the following general formula: ##STR10## where: represents an actinide metal; Cp' represents pentaalkylcyclopentadienyl; and X, Y and Z represent alkyl, aryl, and halide ligands, but specifically excluding any ligand with beta hydrogen, and X may be another Cp'.
Claim 13
Dependent Claim
15 words
The catalyst combination of claim 10 in which said complex comprises a bis-pentamethylcyclopentadienyl actinide complex.
Claim 14
Dependent Claim
17 words
The catalyst combination of claim 11 in which the other ligands of said complex are alkyl ligands.
Claim 15
Dependent Claim
15 words
The catalyst combination of claim 12 in which said alkyl ligands are compact alkyl groups.
Claim 16
Dependent Claim
14 words
The catalyst combination of claim 13 in which said alkyl groups are methyl groups.
Claim 17
Dependent Claim
13 words
The catalyst combination of claim 14 in which said actinide metal is uranium.
Claim 18
Dependent Claim
13 words
The catalyst combination of claim 12 in which said actinide metal is uranium.
Claim 19
Dependent Claim
17 words
The catalyst combination of claim 16 in which the other ligands of said complex are alkyl ligands.
Claim 20
Dependent Claim
15 words
The catalyst combination of claim 17 in which said alkyl ligands are compact alkyl groups.
Claim 21
Dependent Claim
17 words
The catalyst combination of claim 16 in which said organo metallic cocatalyst comprises an alkyl metallic material.
Claim 22
Dependent Claim
20 words
The catalyst combination of claim 19 in which the alkyl ligands of said alkyl metallic cocatalyst are compact alkyl ligands.
Claim 23
Dependent Claim
26 words
The catalyst combination of claim 20 in which said organo metallic cocatalyst is selected from the group consisting of polymethylaluminoxane, triethyl aluminum and normal butyl lithium.
Claim 24
Dependent Claim
17 words
The catalyst combination of claim 10 in which said organo metallic cocatalyst comprises an alkyl metallic material.
Claim 25
Dependent Claim
20 words
The catalyst combination of claim 22 in which the alkyl ligands of said alkyl metallic cocatalyst are compact alkyl ligands.
Claim 26
Dependent Claim
26 words
The catalyst combination of claim 23 in which said organo metallic cocatalyst is selected from the group consisting of polymethylaluminoxane, triethyl aluminum and normal butyl lithium.
Claim 27
Dependent Claim
20 words
The catalyst combination of claim 10 in which said catalyst is carried on a metallic oxide or metallic chloride support.
Claim 28
Dependent Claim
31 words
The catalyst combination of claim 25 in which said support is selected from the group consisting of powdered alumina, powdered silica, powdered magnesium oxide, powdered magnesium chloride and powdered titanium oxide.
Claim 29
Dependent Claim
19 words
The catalyst combination of claim 26 in which said support comprises dehydrated powdered alumina activated at about 950° C.
Claim 30
Dependent Claim
15 words
The catalyst combination of claim 26 in which said complex comprises a bis-pentamethylcyclopentadienyl actinide complex.
Claim 31
Dependent Claim
15 words
The catalyst combination of claim 25 in which said complex comprises a bis-pentamethylcyclopentadienyl actinide complex.
Claim 32
Dependent Claim
17 words
The catalyst combination of claim 29 in which the other ligands of said complex are alkyl lignads.
Claim 33
Dependent Claim
16 words
The catalyst combination of claim 30 in which said alkyl ligands are more compact alkyl groups.
Claim 34
Dependent Claim
17 words
The catalyst combination of claim 31 in which said organo metallic cocatalyst comprises an alkyl metallic material.
Claim 35
Dependent Claim
20 words
The catalyst combination of claim 32 in which the alkyl ligands of said alkyl metallic cocatalyst are compact alkyl ligands.
Claim 36
Dependent Claim
26 words
The catalyst combination of claim 33 in which said organo metallic cocatalyst is selected from the group consisting of polymethylaluminoxane, triethyl aluminum and normal butyl lithium.
Claim 37
Dependent Claim
23 words
The catalyst combination of claim 25 in which the ratio of said cocatalyst to said catalyst is from about 5 to about 16000.
Claim 38
Dependent Claim
23 words
The catalyst combination of claim 10 in which the ratio of said cocatalyst to said catalyst is from about 5 to about 16000.
Claim 39
Dependent Claim
34 words
The catalyst combination of claim 10 in which the catalyst and cocatalyst are present in a reaction medium solvent at a catalyst concentration of between about 11 and 890 micromoles per liter of solvent.
References Cited (Backward Citations)
US3257332A
Cited
US3113115A
Cited
US3392162A
Cited
GB820263A
Cited
GB820264A
Cited
US3579493A
Cited
US3179580A
Cited
US3328447A
Cited
US3288773A
Cited
US3341619A
Cited
US3468856A
Cited
US3808150A
Cited
US3676411A
Cited
US3681256A
Cited
US4097659A
Cited
US3905915A
Cited
US3932307A
Cited
US3950269A
Cited
US3971767A
Cited
US4017525A
Cited
US4145497A
Cited
US4235746A
Cited
US4276191A
Cited
US4244838A
Cited
DE3007725A1
Cited
DE3127133A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |