US4434312A
Expired / Lapsed
US
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Preparation of linear olefin products
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1981-01-02
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Granted: 1984-02-28
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Expires: 2001-01-02
Abstract
Abstract A process for preparing alpha olefin waxes comprising polymerizing an ethylene containing gas in the presence of a hydrocarbon-soluble catalyst comprising a zirconium compound, a dialkyl aluminum halide and a monoalkyl aluminum dihalide in specified ratios in the presence of a diluent at 75°-200° C. and maintaining the mole ratio of ethylene to total olefin reaction product above 0.8 so as to produce a waxy product containing at least 90 mole % linear olefins of which greater than 50 wt % are C 20+ waxes.
Inventors
- 👤 Arthur W. Langer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:17
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/26; B01J31/38; C08; C08F; C08F10/00; C08F10/02; B01J2231/00; B01J2231/10; B01J2231/12; B01J2231/20; B01J2531/00; B01J2531/40; B01J2531/48; B01J27/00; B01J27/06; B01J27/08; B01J27/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
194 words
A process for preparing an olefinic reaction product comprising at least 50 wt. % C 20+ waxes which consists of polymerizing an ethylene containing gas in the presence of: (a) an aluminum alkyl compound having the formula R 2 AlX', wherein X' is selected from the group consisting of fluorine, chlorine, bromine and iodine, and R is an alkyl, cycloalkyl or aralkyl group; (b) an aluminum alkyl compound having the formula RAlX 2 , wherein X is selected from the group consisting of chlorine and bromine, and R is an alkyl, cycloalkyl or aralkyl group; and (c) a zirconium compound having the formula ZrX n Y 4-n , wherein X is selected from the group consisting of chlorine and bromine, Y is selected from the group consisting of alkoxide, aryloxide, carboxylate, and enolate, n=0 to 4, the ratio of a/c is 1 the ratio of b/c is: 0 when n=4; 0 to 2 when n=3; 0 to 3 when n=2; 2 to 4 when n=1; and 2 to 6 when n=0, in the presence of a diluent at a reaction temperature of 100° C. to 180° C. and an ethylene pressure above 50 psig.
Claim 2
Dependent Claim
194 words
A process for preparing an olefinic reaction product comprising at least 50 wt. % C 20+ waxes which consists of polymerizing an ethylene containing gas in the presence of: (a) an aluminum alkyl compound having the formula R 2 AlX', wherein X' is selected from the group consisting of fluorine, chlorine, bromine and iodine, and R is an alkyl, cycloalkyl or aralkyl group; (b) an aluminum alkyl compound having the formula RAlX 2 , wherein X is selected from the group consisting of chlorine and bromine, and R is an alkyl, cycloalkyl or aralkyl group; and (c) a zirconium compound having the formula ZrX n Y 4-n , wherein X is selected from the group consisting of chlorine and bromine, Y is selected from the group consisting of alkoxide, aryloxide, carboxylate, and enolate, n=0 to 4, the ratio of a/c is 1 the ratio of b/c is: 0 when n=4; 0 to 2 when n=3; 0 to 3 when n=2; 2 to 4 when n=1; and 2 to 6 when n=0, in the presence of a diluent at a reaction temperature of 100° C. to 180° C. and an ethylene pressure above 50 psig.
Claim 3
Dependent Claim
17 words
A process according to claim 1, wherein said temperature is about 120° C. to about 150° C.
Claim 4
Dependent Claim
12 words
A process according to claim 1, wherein X and X' are chlorine.
Claim 5
Dependent Claim
12 words
A process according to claims 1 or 3 wherein n=2 to 4.
Claim 6
Dependent Claim
10 words
A process according to claims 1 or 3 wherein n=2.
Claim 7
Dependent Claim
14 words
A process according to claim 1, wherein Y is an alkoxide, aryloxide or carboxylate.
Claim 8
Dependent Claim
11 words
A process according to claim 1, wherein Y is an alkoxide.
Claim 9
Dependent Claim
28 words
A process according to claim 1, wherein the product contains at least 90 mole % linear olefins of which greater than 50 wt. % are C 20+ waxes.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |