US3897508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diolefin dimerization
Assignee: ELF AQUITAINE UNION CHIMIQUE
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Filing: 1973-10-10
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Granted: 1975-07-29
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Expires: 1993-10-10
Abstract
Abstract A process for the dimerization or codimerization of diolefins in the liquid phase in an inert solvent solution using a catalyst comprising a complex obtained by reacting the alkali metal or alkaline earth metal salt of tricarbonyl nitrosyl ferrate anion with a metallic halogen or pseudohalogen or complex thereof is disclosed.
Inventors
- 👤 Igor Tkatchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:56
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/28; B01J31/30; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; B01J31/1815; B01J31/20; C; C07; C07C; C07C2/00; C07C2/02; C07C2/50; C07C2/52; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; B01J2231/324; B01J2231/326; B01J2531/00; B01J2531/20; B01J2531/26; B01J2531/40; B01J2531/42; B01J2531/80; B01J2531/84; B01J2531/842; C07C2527/00; C07C2527/06; C07C2531/00; C07C2531/16; C07C2531/18; C07C2531/20; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
181 words
A PROCESS FOR THE DIMERIZATION OF DIOLEFINS OF UP TO 10 CARBON ATOMS IN THE LIQUID PHASE COMPRISING CONTACTING THE DIOLEFIN IN SOLUTION IN AN INERT SOLVENT AT A TEMPERATURE BETWEEN 20*-120*C. WITH A DIMERIZATION CATALYTIC AMOUNT OF UP TO 10 MOLE PERCENT OF A CATALYST WHICH IS THE REACTION PRODUCT OF AN ALKALI METAL OR ALKALINE EARTH METAL SALT OF A TRICARBONYL NITROSYL FERRATE ANION AND A METAL HALOGEN OR PSEUDO-HALOGEN COMPOUND OR COMPLEX, WHEREIN SAID ALKALI METAL OR ALKALINE EARTH METAL SALT IS OF THE FORMULA M1(FE(CO)3(NO) )M IN WHICH M IS 1 WHEN M1 IS AN ALKALI METAL AND M IS 2 WHEN M1 IS AN ALKALINE EARTH METAL, AND WHEREIN SAID METAL HALOGEN OR PSEUDO-HALOGEN COMPOUND OR COMPLEX THEREOF IS OF THE FORMULA LPM2XN IN WHICH M2 IS A METAL OF GROUPS IA, II, III, IV, V, VIB, VIIB OR VII OF THE PERIODIC TABLE, X IS HALOGEN, CYANIDE, SULFOCYANIDE, ISOCYANATE, NITRATE, NITRITE, SULFATE, ACETYLACETONATE, OR CARBOXYLATE, L IS A CHALCOGEN OR PNICOGEN LIGAND, P IS AN INTEGER OF 0-6 AND N IS AN INTEGER OF 1-6.
Claim 2
Dependent Claim
181 words
A PROCESS FOR THE DIMERIZATION OF DIOLEFINS OF UP TO 10 CARBON ATOMS IN THE LIQUID PHASE COMPRISING CONTACTING THE DIOLEFIN IN SOLUTION IN AN INERT SOLVENT AT A TEMPERATURE BETWEEN 20*-120*C. WITH A DIMERIZATION CATALYTIC AMOUNT OF UP TO 10 MOLE PERCENT OF A CATALYST WHICH IS THE REACTION PRODUCT OF AN ALKALI METAL OR ALKALINE EARTH METAL SALT OF A TRICARBONYL NITROSYL FERRATE ANION AND A METAL HALOGEN OR PSEUDO-HALOGEN COMPOUND OR COMPLEX, WHEREIN SAID ALKALI METAL OR ALKALINE EARTH METAL SALT IS OF THE FORMULA M1(FE(CO)3(NO) )M IN WHICH M IS 1 WHEN M1 IS AN ALKALI METAL AND M IS 2 WHEN M1 IS AN ALKALINE EARTH METAL, AND WHEREIN SAID METAL HALOGEN OR PSEUDO-HALOGEN COMPOUND OR COMPLEX THEREOF IS OF THE FORMULA LPM2XN IN WHICH M2 IS A METAL OF GROUPS IA, II, III, IV, V, VIB, VIIB OR VII OF THE PERIODIC TABLE, X IS HALOGEN, CYANIDE, SULFOCYANIDE, ISOCYANATE, NITRATE, NITRITE, SULFATE, ACETYLACETONATE, OR CARBOXYLATE, L IS A CHALCOGEN OR PNICOGEN LIGAND, P IS AN INTEGER OF 0-6 AND N IS AN INTEGER OF 1-6.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein said catalytic amount is about 0.33 mmole percent.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein said temperature is 40*-80* C.
Claim 5
Dependent Claim
19 words
The process of claim 1 wherein said alkali metal or alkaline earth metal salt is sodium tricarbonyl nitrosyl ferrate.
Claim 6
Dependent Claim
24 words
The process of claim 4 wherein said LpM2Xn is selected from the group consisting of stannous chloride, stannic chloride, zinc chloride and ferric chloride.
Claim 7
Dependent Claim
20 words
The process of claim 4 wherein said LpM2Xn is selected from the group consisting of dichlorozinc bipyridine and dichlorotin bipyridine.
Claim 8
Dependent Claim
19 words
The process of claim 1 wherein the ratio of M1(Fe(CO)3(NO))m to LpM2Xn is between 0.5 n/m and 5 n/m.
Claim 9
Dependent Claim
25 words
The process of claim 1 wherein the ratio of M1(Fe(CO)3(NO))m to LpM2Xn is equal to n/m and the dimerization process temperature is between 40*-90* C.
Claim 10
Dependent Claim
21 words
The process of claim 1 wherein the reaction medium contains between 1 and 8 moles of water per mole of catalyst.
Claim 11
Dependent Claim
22 words
The process of claim 9 wherein the reaction medium contains between 2 and 4 moles of water per mole of catalytic complex.
Claim 12
Dependent Claim
21 words
The process of claim 1 wherein the inert solvent is selected from the group consisting of toluene, hexane, tetrahydrofuran and vinylcyclohexene.
Claim 13
Dependent Claim
21 words
The process of claim 1 wherein the diolefin is selected from the group consisting of butadiene, isoprene, norbornadiene and mixtures thereof.
Claim 14
Dependent Claim
17 words
The process of claim 1 wherein said diolefin is a refinery C4 fraction containing butadiene and butenes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |