Patent US4243610A successfully refreshed from Google Patents.
US4243610A
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Cobalt-gold promoter for ruthenium hydrogenation catalyst as in hydrogenation of unsaturated dinitriles
Assignee: Phillips Petroleum Co
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Filing: 1979-11-08
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Granted: 1981-01-06
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Expires: 1999-11-08
Abstract
Abstract Cobalt and gold in a ruthenium hydrogenation catalyst markedly increases the yield of product. A method for hydrogenating branched-chain olefinically unsaturated aliphatic dinitrile employing a ruthenium-cobalt-gold catalyst to produce saturated diamines is set forth.
Inventors
- 👤 Charles A. Drake
- 👤 Timothy P. Murtha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:32
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68; C07C209/70; B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8913; C07C209/44; C07C209/48
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
27 words
A method for the hydrogenation of a compound which comprises subjecting said compound to hydrogenation conditions in the presence of a catalyst comprising ruthenium, cobalt and gold.
Claim 2
Independent Claim
27 words
A method for the hydrogenation of a compound which comprises subjecting said compound to hydrogenation conditions in the presence of a catalyst comprising ruthenium, cobalt and gold.
Claim 3
Dependent Claim
38 words
A method for the hydrogenation of a compound which comprises subjecting said compound to hydrogenation conditions in the presence of a catalyst according to claim 1 wherein minor amounts of said elements are composited with a suitable support.
Claim 4
Dependent Claim
35 words
A method for the hydrogenation of a compound which comprises subjecting said compound to hydrogenation conditions in the presence of a catalyst according to claim 1 wherein the catalyst is composited with an alumina support.
Claim 5
Dependent Claim
31 words
A method for the hydrogenation of a compound which comprises subjecting said compound to hydrogenation conditions in the presence of a catalyst according to claim 3 wherein the support is gamma-alumina.
Claim 6
Dependent Claim
113 words
A method for the hydrogenation of a compound which comprises subjecting said compound to hydrogenation conditions in the presence of a catalyst according to claim 1 wherein the catalyst is supported on a suitable support, the elemental ruthenium content is in the range of from about 0.5 to about 50 weight percent based on the weight of said support, the cobalt is present in the approximate range of from about 10 to about 300 weight percent based on the weight of the ruthenium in the catalyst, and the gold is present in the approximate range of from about 5 to about 200 weight percent, also based on the ruthenium content of the catalyst.
Claim 7
Dependent Claim
27 words
A method for the hydrogenation of a nitrile compound which comprises subjecting the same to hydrogenation conditions in the presence of a catalyst according to claim 1.
Claim 8
Dependent Claim
29 words
A method for the hydrogenation of a branched-chain unsaturated aliphatic dinitrile which comprises subjecting the same to hydrogenation conditions in the presence of a catalyst according to claim 1.
Claim 9
Dependent Claim
29 words
A method for the hydrogenation of a branched-chain unsaturated aliphatic dinitrile which comprises subjecting the same to hydrogenation conditions in the presence of a catalyst according to claim 2.
Claim 10
Dependent Claim
29 words
A method for the hydrogenation of a branched-chain unsaturated aliphatic dinitrile which comprises subjecting the same to hydrogenation conditions in the presence of a catalyst according to claim 3.
Claim 11
Dependent Claim
29 words
A method for the hydrogenation of a branched-chain unsaturated aliphatic dinitrile which comprises subjecting the same to hydrogenation conditions in the presence of a catalyst according to claim 4.
Claim 12
Dependent Claim
29 words
A method for the hydrogenation of a branched-chain unsaturated aliphatic dinitrile which comprises subjecting the same to hydrogenation conditions in the presence of a catalyst according to claim 5.
Claim 13
Dependent Claim
42 words
A method according to claim 7 wherein the branched-chain unsaturated aliphatic dinitrile is represented by the formula ##STR5## wherein each R is independently selected from the group consisting of an alkylene radical and an alkylidene radical and R' is an alkyl radical.
Claim 14
Dependent Claim
29 words
A method according to claim 12 wherein each R and R' has from 1 to 15 carbon atoms and the unsaturated dinitrile contains from 7 to 30 carbon atoms.
Claim 15
Dependent Claim
28 words
A method according to claim 13 wherein there is hydrogenated a mixture containing at least one of the following dinitriles; 5-methyl-4-nonenedinitrile, 2,4-dimethyl-4-octenedinitrile, 2,4-dimethyl-3-octenedinitrile, 2,4,6-trimethyl-3-heptenedinitrile, 5-methylenenonanedinitrile, 2-methyl-4-methyleneoctanedinitrile, and 2,6-dimethyl-4-methyleneheptanedinitrile.
Claim 16
Dependent Claim
23 words
A method according to claim 13 wherein a mixture of the following dinitriles is hydrogenated; 5-methyl-4-nonenedinitrile, 2,4-dimethyl-4-octenedinitrile, 2,4-dimethyl-3-octenedinitrile, 2,4,6-trimethyl-3-heptenedinitrile, 5-methylenenonanedinitrile, 2-methyl-4-methyleneoctanedinitrile, and 2,6-dimethyl-4-methyleneheptanedinitrile.
References Cited (Backward Citations)
US3859342A
Cited
US3880929A
Cited
US3896173A
Cited
US3896174A
Cited
US4053515A
Cited
US4003933A
Cited
US4140720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |