US4562291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oligomerization of alkyl groups on amines
Assignee: Air Products and Chemicals Inc
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Filing: 1984-12-19
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Granted: 1985-12-31
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Expires: 2004-12-19
Abstract
Abstract Long chain alkylamines are synthesized by the oligomerization of shorter chain alkylamines at a temperature between 50°-250° C. and a pressure between 1-300 atmospheres in the presence of a catalyst mixture comprising a fluoroborate salt and a ruthenium, an osmium, or an iridium compound.
Inventors
- 👤 Robert B. Wilson, Jr.
- 👤 Richard M. Laine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:41
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
63 words
A process for the oligomerization of alkylamines to produce longer carbon chain alkylamines, said process comprising: contacting said alkylamine with a catalyst mixture comprising a tetra-fluoroborate salt and a ruthenium, an osmium, or an iridium containing compound in a ratio of between 1:1 to 1:100 at a temperature between 50° and 250° C. and at a pressure between 1 atm and 300 atm.
Claim 2
Dependent Claim
63 words
A process for the oligomerization of alkylamines to produce longer carbon chain alkylamines, said process comprising: contacting said alkylamine with a catalyst mixture comprising a tetra-fluoroborate salt and a ruthenium, an osmium, or an iridium containing compound in a ratio of between 1:1 to 1:100 at a temperature between 50° and 250° C. and at a pressure between 1 atm and 300 atm.
Claim 3
Dependent Claim
15 words
The process in accordance with claim 1 wherein said tetra-fluoroborate salt is NaBF 4 .
Claim 4
Dependent Claim
24 words
The process in accordance with claim 2 wherein said catalyst mixture comprises NaBF 4 and RuCL 3 in a ratio between 1:2 and 1:6.
Claim 5
Dependent Claim
21 words
The process in accordance with claim 3 wherein said oligomerization is carried out at a temperature between 165° and 220° C.
Claim 6
Dependent Claim
22 words
The process in accordance with claim 4 wherein said oligomerization is carried out at a pressure between 1 atm and 18 atm.
Claim 7
Dependent Claim
17 words
The process in accordance with claim 5 wherein the ratio of amine to catalyst is about 2000:1.
Claim 8
Dependent Claim
18 words
The process in accordance with claim 6 wherein the oligomerization is carried out in an aliphatic amine solvent.
Claim 9
Dependent Claim
15 words
The process in accordance with claim 1 wherein the alkylamine to be oligomerized in monoethylamine.
Claim 10
Dependent Claim
16 words
The process in accordance with claim 1 wherein the alkylamine to be oligomerized is a trialkylamine.
Claim 11
Dependent Claim
21 words
The process in accordance with claim 9 wherein the reaction is carried out at a temperature between 200° and 250° C.
Claim 12
Dependent Claim
61 words
A process for the synthesis of dibutylamine by the oligomerization of diethylamine which comprises: contacting said diethylamine with a catalyst mixture comprising a tetra-fluoroborate salt and a ruthenium, an osmium, or an iridium containing compound in a ratio of between 1:1 to 1:100 at a temperature between 50° and 250° C. and at a pressure between 1 atm and 300 atm.
Claim 13
Dependent Claim
61 words
A process for the synthesis of dibutylamine by the oligomerization of diethylamine which comprises: contacting said diethylamine with a catalyst mixture comprising a tetra-fluoroborate salt and a ruthenium, an osmium, or an iridium containing compound in a ratio of between 1:1 to 1:100 at a temperature between 50° and 250° C. and at a pressure between 1 atm and 300 atm.
Claim 14
Dependent Claim
15 words
The process in accordance with claim 11 wherein said tetra-fluoroborate salt is NaBF 4 .
Claim 15
Dependent Claim
24 words
The process in accordance with claim 12 wherein said catalyst mixture comprises NaBF 4 and RuCl 3 in a ratio between 1:2 and 1:6.
Claim 16
Dependent Claim
21 words
The process in accordance with claim 13 wherein said oligomerization is carried out at a temperature between 165° and 220° C.
Claim 17
Dependent Claim
22 words
The process in accordance with claim 14 wherein said oligomerization is carried out at a pressure between 1 atm and 18 atm.
Claim 18
Dependent Claim
17 words
The process in accordance with claim 15 wherein the ratio of diethylamine to catalyst is about 2000:1.
Claim 19
Dependent Claim
18 words
The process in accordance with claim 14 wherein the oligomerization is carried out in an aliphatic amine solvent.
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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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |