Patent US3671591A successfully refreshed from Google Patents.
US3671591A
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US
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Dehydrogenation of alcohols to ketones
Assignee: Texaco Inc
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Filing: 1969-07-03
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Granted: 1972-06-20
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Expires: 1989-07-03
Abstract
Abstract A Group VIII metal containing pyrolyzed polyacrylonitrile polymer catalyst and hydrocarbon conversion process for the dehydrogenation of alcohols to ketones particularly isopropyl alcohol to acetone and the hydrogenation of nitro compounds to amines, particularly 2-nitropropane to isopropyl amine by the use of said catalyst.
Inventors
- 👤 Irving Schwager
- 👤 Robert J Leak
- 👤 Edward L Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:26
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/002; B; B01; B01J; B01J27/00; B01J27/20; B01J27/22; B01J31/00; B01J31/02; B01J31/06; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
28 words
A process of claim 1 wherein the catalyst is prepared from a polyacrylonitrile polymer which comprises at least 90 percent by weight polymerized monomer units derived from acrylonitrile.
Claim 2
Dependent Claim
28 words
A process of claim 1 wherein the catalyst is prepared from a polyacrylonitrile polymer which comprises at least 95 percent by weight polymerized monomer units derived from acrylonitrile.
Claim 3
Dependent Claim
20 words
A process of claim 1 wherein the polyacrylonitrile polymer has a molecular weight of from about 25,000 to about 1,300,000.
Claim 4
Dependent Claim
19 words
A process of claim 1 wherein the organic secondary alcohol is isopropyl alcohol, and the organic ketone is acetone.
Claim 5
Dependent Claim
19 words
A process of claim 2 wherein the organic secondary alcohol is isopropyl alcohol, and the organic ketone is acetone.
Claim 6
Dependent Claim
19 words
A process of claim 4 wherein the organic secondary alcohol is isopropyl alcohol, and the organic ketone is acetone.
References Cited (Backward Citations)
US3173933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |