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US4442309A Expired / Lapsed US ⏱️ 0.0 years remaining

Preparation of linear olefin products

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1981-12-14
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Granted: 1984-04-10
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Expires: 2001-12-14
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Abstract

Abstract A process for preparing and controlling the &upbar& Mn of a reaction product comprising at least 90 mole % linear alpha olefins which includes polymerizing an ethylene containing gas in the presence of the reaction product of a Zirconium metal compound with R2AlX, wherein R is an alkyl group having about 1 to about 5 carbon atoms and X is Cl or Br, in the presence of a diluent at a temperature of about 75 DEG to 200 DEG C. and an ethylene pressure above about 50 psia, wherein the mole ratio of ethylene to olefin reaction product is above 0.8 throughout the reaction, wherein the product olefin concentration is greater than 5 wt. % based on the diluent and reaction product, wherein the &upbar& Mn of said reaction product is controlled by the molar ratio of said R2AlX/ZrCl4, said molar ratio being less than about 1.

Inventors

  • 👤 Arthur W. Langer, Jr.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 14:14
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1625; C10L1/1633; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C08; C08F; C08F10/00; C07C2527/00; C07C2527/06; C07C2527/133; C07C2527/135; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/12; C07C2531/14; C07C2531/26; C07C2531/36; C07C2531/38

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 148 words
A process for preparing and controlling the M n of a reaction product comprising at least 90 mole % linear alpha olefins which comprises polymerizing an ethylene containing gas in the presence of the reaction product of ZrCl 4 with R 2 AlX, wherein R is an alkyl group having about 1 to about 5 carbon atoms and X is Cl or Br, in the presence of a diluent at a temperature of about 75° to 200° C. and an ethylene pressure above about 50 psia, wherein the mole ratio of ethylene to olefin reaction product is above 0.8 throughout the reaction wherein the product olefin concentration is greater than 5 wt.% based on the diluent and reaction product, wherein the M n of said reaction product is controlled by the molar ratio of said R 2 AlX/ZrCl 4 , said molar ratio being less than about 1.
Claim 2
Dependent Claim 148 words
A process for preparing and controlling the M n of a reaction product comprising at least 90 mole % linear alpha olefins which comprises polymerizing an ethylene containing gas in the presence of the reaction product of ZrCl 4 with R 2 AlX, wherein R is an alkyl group having about 1 to about 5 carbon atoms and X is Cl or Br, in the presence of a diluent at a temperature of about 75° to 200° C. and an ethylene pressure above about 50 psia, wherein the mole ratio of ethylene to olefin reaction product is above 0.8 throughout the reaction wherein the product olefin concentration is greater than 5 wt.% based on the diluent and reaction product, wherein the M n of said reaction product is controlled by the molar ratio of said R 2 AlX/ZrCl 4 , said molar ratio being less than about 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 AlX is R 2 AlCl.
Claim 5
Dependent Claim 16 words
A process according to claim 1 wherein said temperature is about 100° to about 180° C.
Claim 6
Dependent Claim 16 words
A process according to claim 1 wherein said temperature is about 120° to about 150° C.
Claim 7
Dependent Claim 17 words
A process according to claim 2 or 3 wherein said ethylene pressure is at least 1000 psig.

References Cited (Backward Citations)

US4396788A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-04-10 1987-10-10 1988-04-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-04-10 1991-10-10 1992-04-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-04-10 1995-10-10 1996-04-10 $7700.00 Window Closed / Lapsed

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