US4075127A
Expired / Lapsed
US
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Catalyst for production of α,β-unsaturated carboxylic acids
Assignee: Mitsubishi Chemical Corp
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Filing: 1976-08-11
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Granted: 1978-02-21
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Expires: 1996-08-11
Abstract
Abstract An alpha , beta -unsaturated aliphatic carboxylic acid can be prepared in a high yield by catalytic vapor phase oxidation of the corresponding alpha , beta -unsaturated aldehyde in the presence of a catalyst represented by the following formula:
Inventors
- 👤 Koju Kadowaki
- 👤 Kenji Takagi
- 👤 Yoshiaki Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B; B01; B01J; B01J23/00; B01J23/002; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8877; B01J23/888; B01J23/8885; B01J2523/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A catalyst for production of an α,β-unsaturated aliphatic carboxylic acid by the vapour phase oxidation of the corresponding α,β-unsaturated aliphatic aldehyde, which consists essentially of an activated catalytic oxide complex of antimony, nickel, molybdenum, vanadium, tungsten, niobium, copper and oxygen and defined by the following formula: Sb.sub.a Ni.sub.b Mo.sub.c V.sub.d W.sub.e Nb.sub.f Cu.sub.g O.sub.h wherein, a = 100, b = 15 - 150, c = 10 - 500, d = 5 - 150, e = 0 - 100, f = 0 - 100, g = 0 - 50 wherein g is not 0, when f = 0 and h ≦ 2950, which is a number determined by the valence requirements of the other elements present respectively, in atomic ratio.
Claim 2
Dependent Claim
119 words
A catalyst for production of an α,β-unsaturated aliphatic carboxylic acid by the vapour phase oxidation of the corresponding α,β-unsaturated aliphatic aldehyde, which consists essentially of an activated catalytic oxide complex of antimony, nickel, molybdenum, vanadium, tungsten, niobium, copper and oxygen and defined by the following formula: Sb.sub.a Ni.sub.b Mo.sub.c V.sub.d W.sub.e Nb.sub.f Cu.sub.g O.sub.h wherein, a = 100, b = 15 - 150, c = 10 - 500, d = 5 - 150, e = 0 - 100, f = 0 - 100, g = 0 - 50 wherein g is not 0, when f = 0 and h ≦ 2950, which is a number determined by the valence requirements of the other elements present respectively, in atomic ratio.
Claim 3
Dependent Claim
56 words
A catalyst as set forth in claim 1, in which a = 100, b = 20 - 120, c = 15 - 400, d = 5 - 120, e = 0 - 80, f = 0 - 80, g = 0 - 40 wherein g is not 0 when f = 0, and h ≦ 2410.
Claim 4
Dependent Claim
23 words
A catalyst as set forth in claim 1, in which the catalytic composition consists essentially of Sb, Ni, Mo, V, W, and Cu.
Claim 5
Dependent Claim
22 words
A catalyst as set forth in claim 1, in which the catalytic composition consists essentially of Sb, Ni, Mo, V, and Nb.
Claim 6
Dependent Claim
23 words
A catalyst as set forth in claim 1, in which the catalytic composition consists essentially of Sb, Ni, Mo, V, Nb and Cu.
Claim 7
Dependent Claim
24 words
A catalyst as set forth in claim 1, in which the catalytic composition consists essentially of Sb, Ni, Mo, V, W, Nb and Cu.
Claim 8
Dependent Claim
25 words
A catalyst as set forth in claim 1 in which, in said activated catalytic oxide complex, the nickel and antimony oxides occur as nickel antimonate.
References Cited (Backward Citations)
US3574729A
Cited
US3956377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |