US3065264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor phase oxidation of propylene acrylic acid
Assignee: EIDP Inc
•
Filing: 1958-12-24
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Granted: 1962-11-20
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Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Koch Theodore Augur
- 👤 Robinson Ivan Maxwell
- 👤 Wiley William Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:31
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8877; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B01J2523/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
PROCESS FOR PREPARING ACRYLIC ACID WHICH COMPRISES BRINGING THE VAPOR OF PROPYLENE, WITH ADDED WATER IN THE PROPORTION OF 0.5:1 TO 20:1, EXPRESSED IN TERMS OF THE WATER:PROPYLENE MOL RATIO, IN THE PRESENCE OF OXYGEN, IN CONTACT WITH A PRECIPITATED OXIDE CATALYST CONSISTING OF MOLYBDENUM OXIDE COMBINED WITH A BASIC METAL OXIDE FROM THE GROUP CONSISTING OF THE OXIDES OF COBALT AND NICKEL, THE ATOMIC RATIO OF BASIC METAL TO MOLYBDENUM BEING FROM 1:1 TO 0.5:1, AT A TEMPERATURE OF 300*C. TO 500*C. AND THEREAFTER SEPARATING ACRYLIC ACID FROM THE EFFLUENT GASES.
Claim 2
Dependent Claim
92 words
PROCESS FOR PREPARING ACRYLIC ACID WHICH COMPRISES BRINGING THE VAPOR OF PROPYLENE, WITH ADDED WATER IN THE PROPORTION OF 0.5:1 TO 20:1, EXPRESSED IN TERMS OF THE WATER:PROPYLENE MOL RATIO, IN THE PRESENCE OF OXYGEN, IN CONTACT WITH A PRECIPITATED OXIDE CATALYST CONSISTING OF MOLYBDENUM OXIDE COMBINED WITH A BASIC METAL OXIDE FROM THE GROUP CONSISTING OF THE OXIDES OF COBALT AND NICKEL, THE ATOMIC RATIO OF BASIC METAL TO MOLYBDENUM BEING FROM 1:1 TO 0.5:1, AT A TEMPERATURE OF 300*C. TO 500*C. AND THEREAFTER SEPARATING ACRYLIC ACID FROM THE EFFLUENT GASES.
References Cited (Backward Citations)
GB397161A
Cited
US2260409A
Cited
US2504034A
Cited
US2537568A
Cited
US2649477A
Cited
US2625519A
Cited
US2941007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |