US4361714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of linear olefin products
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1981-12-14
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Granted: 1982-11-30
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Expires: 2001-12-14
Abstract
Abstract A process for preparing linear alpha olefins and waxes having a total product Mn in the range 200 to 700 which includes polymerizing an ethylene-containing gas in the presence of the reaction product of a zirconium halide with R2Zn, wherein R is an alkyl group having about 1 to about 20 carbon atoms, in the presence of a diluent at a temperature of about 50 DEG to 200 DEG C. and an ethylene pressure above about 3.5 MPa, wherein the Mn of said reaction product is controlled by the molar ratio of said R2Zn/ZrCl4, said molar ratio being less than about 1.
Inventors
- 👤 Arthur W. Langer
- 👤 John J. Steger
- 👤 Terry J. Burkhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:12
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C08; C08F; C08F110/00; C08F110/02; C07C2527/00; C07C2527/06; C07C2527/135; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/26; C07C2531/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A process for preparing linear alpha olefins and waxes having a total product M n in the range 200 to 700 which comprises polymerizing an ethylene-containing gas in the presence of the reaction product of a Zr metal compound having the formula ZrX a A b wherein a=3 or 4, b=0 or 1 and a+b=4 and X=Cl or Br and A is Cl, Br, I, OR or OOCR with R 2 Zn, wherein R is an alkyl group having about 1 to about 5 carbon atoms in the presence of a diluent at a temperature of about 50° to 200° C. and an ethylene pressure above about 3.5 MPa, wherein the M n of said reaction product is controlled by the molar ratio of said R 2 Zn/ZrCl 4 , said molar ratio being about 0.1/1 to about 1/1.
Claim 2
Dependent Claim
139 words
A process for preparing linear alpha olefins and waxes having a total product M n in the range 200 to 700 which comprises polymerizing an ethylene-containing gas in the presence of the reaction product of a Zr metal compound having the formula ZrX a A b wherein a=3 or 4, b=0 or 1 and a+b=4 and X=Cl or Br and A is Cl, Br, I, OR or OOCR with R 2 Zn, wherein R is an alkyl group having about 1 to about 5 carbon atoms in the presence of a diluent at a temperature of about 50° to 200° C. and an ethylene pressure above about 3.5 MPa, wherein the M n of said reaction product is controlled by the molar ratio of said R 2 Zn/ZrCl 4 , said molar ratio being about 0.1/1 to about 1/1.
Claim 3
Dependent Claim
14 words
A process according to claim 1, wherein said molar ratio is less than 0.5.
Claim 4
Dependent Claim
15 words
A process according to claim 1, wherein said R 2 Zn is Et 2 Zn.
Claim 5
Dependent Claim
16 words
A process according to claim 1 wherein said temperature is about 100° to about 150° C.
Claim 6
Dependent Claim
17 words
A process according to claim 2 or 3 wherein said ethylene pressure is at least 5.5 MPa.
Claim 7
Dependent Claim
16 words
A process according to claim 1 wherein the M n of said reaction product is >250.
Claim 8
Dependent Claim
17 words
A process according to claim 1 in which a pi base is present as a catalyst modifier.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |