US4096184A
Expired / Lapsed
US
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Process for preparing acid amides
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1976-12-29
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Granted: 1978-06-20
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Expires: 1996-12-29
Abstract
Abstract A process for preparing acid amides by hydration of the corresponding nitrile compounds with water in the presence of a catalyst, characterized in that the catalyst is the one prepared by treating a vanadate with a cuprous salt or with at least two of metallic copper, a cuprous salt and a cupric salt.
Inventors
- 👤 Shinji Nakamura
- 👤 Shun Inokuma
- 👤 Shin Tanaka
- 👤 Kenichi Hirose
- 👤 Takashi Deguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:23
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/847; B01J23/8472
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
57 words
A process for preparing acid amides by hydration of the corresponding nitrile compounds with water in the presence of a catalyst, characterized in that the catalyst is prepared by treating a vanadate with a cuprous salt or with at least two members selected from the group consisting of metallic copper, a cuprous salt and a cupric salt.
Claim 2
Dependent Claim
57 words
A process for preparing acid amides by hydration of the corresponding nitrile compounds with water in the presence of a catalyst, characterized in that the catalyst is prepared by treating a vanadate with a cuprous salt or with at least two members selected from the group consisting of metallic copper, a cuprous salt and a cupric salt.
Claim 3
Dependent Claim
46 words
The process according to claim 1, wherein the starting nitrile compound is a member selected from the group consisting of acetonitrile, propionitrile, butyronitrile, acrylonitrile, methacrylonitrile, crotononitrile, methoxyacetonitrile, allyl cyanide, cyclohexanecarbonitrile, benzyl cyanide, cinnamonitrile, α-naphthylacetonitrile, benzonitrile, naphthonitrile, nicotinonitrile, cyanogen, adiponitrile, phthalonitrile, glutaronitrile, benzoyl cyanide and acetyl cyanide.
Claim 4
Dependent Claim
15 words
The process according to claim 2, wherein the starting nitrile compound is acrylonitrile or methacrylonitrile.
Claim 5
Dependent Claim
30 words
The process according to claim 1, wherein the hydration is carried out in the presence of an excessive amount of water at a temperature from room temperature to 300° C.
Claim 6
Dependent Claim
47 words
The process according to claim 1, wherein the vanadate is at least one member selected from the group consisting of sodium orthovanadate, sodium metavanadate, sodium pyrovanadate, potassium orthovanadate, potassium metavanadate, potassium pyrovanadate, cuprous orthovanadate, cupric orthovanadate, cuprous metavanadate, cupric metavanadate, cuprous pyrovanadate, cupric pyrovanadate, polyvanadates and isopolyvanadates.
Claim 7
Dependent Claim
34 words
The process according to claim 1, wherein the vanadate is cupric vanadates or mixtures thereof prepared by admixing an alkali metal or alkaline earth metal vanadate with a cupric salt in an aqueous medium.
Claim 8
Dependent Claim
40 words
The process according to claim 6, wherein the cupric salt is a member selected from the group consisting of cupric chloride, cupric bromide, cupric sulfate, cupric nitrate, cupric perchlorate, cupric formate, cupric acetate, cupric propionate, cupric hydroxide and cupric carbonate.
Claim 9
Dependent Claim
25 words
The process according to claim 6, wherein the cupric vanadate is used for the preparation of the catalyst without its separation from the reaction mixture.
Claim 10
Dependent Claim
37 words
The process according to claim 1, wherein the vanadate is prepared by dissolving vanadium pentoxide or ammonium vanadate with an alkali metal salt in an aqueous medium, or by mixing them together and heating the resultant mixture.
Claim 11
Dependent Claim
36 words
The process according to claim 1, wherein the cuprous salt is a member selected from the group consisting of cuprous chloride, cuprous bromide, cuprous iodide, cuprous sulfate, cuprous nitrate, cuprous formate, cuprous acetate and cuprous oxide.
Claim 12
Dependent Claim
42 words
The process according to claim 1, wherein the cupric salt is a member selected from the group consisting of cupric chloride, cupric bromide, cupric sulfate, cupric nitrate, cupric perchlorate, cupric formate, cupric acetate, cupric propionate, cupric hydroxide, cupric carbonate and cupric oxide.
Claim 13
Dependent Claim
19 words
The process according to claim 1, wherein the treatment is carried out in the presence of a nitrile compound.
Claim 14
Dependent Claim
36 words
The process according to claim 1, wherein the catalyst is prepared by treating a vanadate with a cuprous salt in an atomic ratio of Cu : V being from 1 : 0.01 to 1 : 100.
Claim 15
Dependent Claim
52 words
The process according to claim 1, wherein the catalyst is prepared by treating a vanadate with at least two members selected from the group consisting of metallic copper, a cuprous salt and a cupric salt in an atomic ratio of Cu : V being from 1 : 0.01 to 1 : 100.
Claim 16
Dependent Claim
63 words
The process according to claim 14, wherein an atomic ratio of Cu o : Cu I , Cu o : Cu II or Cu I : Cu II is from 1 : 0.01 to 1 : 100, or an atomic ratio of Cu o : Cu I : Cu II is from 1 : 0.01 : 0.01 to 1 : 100 : 100.
Claim 17
Dependent Claim
32 words
A catalyst prepared by treating a vanadate with a cuprous salt or with at least two members selected from the group consisting of metallic copper, a cuprous salt and a cupric salt.
Claim 18
Dependent Claim
32 words
A catalyst prepared by treating a vanadate with a cuprous salt or with at least two members selected from the group consisting of metallic copper, a cuprous salt and a cupric salt.
References Cited (Backward Citations)
US3381034A
Cited
US3767706A
Cited
US3758578A
Cited
US3696152A
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US3911009A
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US3789074A
Cited
US4010238A
Cited
US3941837A
Cited
US3997606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |