US4280928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst compositions and their use for the preparation of methacrolein
Assignee: Rohm and Haas Co
•
Filing: 1979-10-12
•
Granted: 1981-07-28
•
Expires: 1999-10-12
Abstract
Abstract Methacrolein is produced by the catalytic vapor phase oxidation of isobutylene (including compounds converted to isobutylene). The catalyst has the following formula: Mo a P b Fe c Co d Ni e Bi f Te g Sb h Cs i Zr j X k O x wherein a-k represent the number of atoms of the particular element depicted, X is another element and x is the number of oxygens present.
Inventors
- 👤 Lawrence S. Kirch
- 👤 William J. Kennelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:37
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8876; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; B01J27/192; C07C45/37; B01J2523/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
A catalyst having the formula Mo a P b Fe c --Co d Ni e Bi f Te g Sb h Cs i Zr j X k O x wherein when a is 12; b is 2; c is 1-7; d is 3-7; e is 1-5; f is 1; g is 0.7-1.4; h is 0-1; i is 0.5; j is 0-1.75; k is 0-1; x is a value determined according to the state of oxidation, and X is one or more elements selected from Cu, B or Al.
Claim 2
Dependent Claim
88 words
A catalyst having the formula Mo a P b Fe c --Co d Ni e Bi f Te g Sb h Cs i Zr j X k O x wherein when a is 12; b is 2; c is 1-7; d is 3-7; e is 1-5; f is 1; g is 0.7-1.4; h is 0-1; i is 0.5; j is 0-1.75; k is 0-1; x is a value determined according to the state of oxidation, and X is one or more elements selected from Cu, B or Al.
Claim 3
Dependent Claim
40 words
The catalyst according to claim 1 having the formula Mo 12 P 2 Fe 5-7 Co 5-7 NiBiSbZr 1-1 .75 Cs 0 .5 Te 0 .7 O x where x is a value determined according to the state of oxidation.
Claim 4
Dependent Claim
26 words
The catalyst of claim 2 having the molecular formula Mo 12 P 2 Fe 5 Co 5 NiBiSbZrCs 0 .5 Te 0 .7 O x .
Claim 5
Dependent Claim
28 words
The catalyst of claim 2 having the formula Mo 12 P 2 Fe 7 Co 7 NiBiSbZr 1 .25 Cs 0 .5 Te 0 .7 O x .
Claim 6
Dependent Claim
29 words
The catalyst of claim 2 having the molecular formula Mo 12 P 2 Fe 7 Co 7 NiBiSbZr 1 .5 Cs 0 .5 Te 0 .7 O x .
Claim 7
Dependent Claim
28 words
The catalyst of claim 2 having the formula Mo 12 P 2 Fe 5 Co 5 NiBiSbZr 1 .75 Cs 0 .5 Te 0 .7 O x .
Claim 8
Dependent Claim
28 words
The catalyst of claim 2 having the formula Mo 12 P 2 Fe 5 Co 5 NiBiSbZr 1 .25 Cs 0 .5 Te 0 .7 O x .
Claim 9
Dependent Claim
25 words
The catalyst of claim 1 having the formula Mo 12 P 2 Fe 7 Co 7 NiBiSbCs 0 .5 Te 0 .7 CuO x .
Claim 10
Dependent Claim
25 words
The catalyst of claim 1 having the formula Mo 12 P 2 FeCo 5 Ni 5 BiSbZrCs 0 .5 Te 0 .7 CuO x .
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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) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |