US3076858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrogenation in the presence of copper catalysts
Assignee: Dow Chemical Co
•
Filing: 1958-06-16
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Granted: 1963-02-05
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Ludo K Frevel
- 👤 Leonard J Kressley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:03
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/163; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/89; B01J23/8926; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C5/08; C07C5/09; C07C7/167; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2523/70; C07C2523/72; C07C2523/74; C07C2523/745; C07C2523/755; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
METHOD OF SELECTIVELY HYDROGENATING A POLYUNSATURATED HYDROCARBON OF THE DIOLEFINIC AND ACETYLINIC TYPES IN THE PRESENCE OF MONOOLEFINES WHICH COMPRISES PASSING A HYDROCARBON FEED OF THE C4- AND C3-TYPES CONTAINING SAID VAPORIZED HYDROCARBONS TOGETHER WITH AT LEAST THE THEORETIC AMOUNT OF HYDROGEN TO REDUCE THE DESIRE POLYUNSATURATED HYDROCARBON TO AN OLEFINE OVER A GRANULAR CATALYST CONSISTING OF BETWEEN 99.9 AND 99.999 WEIGHT PERCENT OF FINELY DIVIDED COPPER, THE BALANCE BEING AT LEAST ONE FINELY DIVIDED METAL OF THE GROUP FE, NI, RU, RH, PD, IR AND PT, SAID METALS BEING DISPERSED ON AT LEAST ONE HIGH SURFACE AREA CARRIER OF THE GROUP ACTIVATED GAMMA ALUMINA AND KAPPA ALUMINA AT A REACTION TEMPERATURE BETWEEN ABOUT 140* AND 200*C.
Claim 2
Dependent Claim
117 words
METHOD OF SELECTIVELY HYDROGENATING A POLYUNSATURATED HYDROCARBON OF THE DIOLEFINIC AND ACETYLINIC TYPES IN THE PRESENCE OF MONOOLEFINES WHICH COMPRISES PASSING A HYDROCARBON FEED OF THE C4- AND C3-TYPES CONTAINING SAID VAPORIZED HYDROCARBONS TOGETHER WITH AT LEAST THE THEORETIC AMOUNT OF HYDROGEN TO REDUCE THE DESIRE POLYUNSATURATED HYDROCARBON TO AN OLEFINE OVER A GRANULAR CATALYST CONSISTING OF BETWEEN 99.9 AND 99.999 WEIGHT PERCENT OF FINELY DIVIDED COPPER, THE BALANCE BEING AT LEAST ONE FINELY DIVIDED METAL OF THE GROUP FE, NI, RU, RH, PD, IR AND PT, SAID METALS BEING DISPERSED ON AT LEAST ONE HIGH SURFACE AREA CARRIER OF THE GROUP ACTIVATED GAMMA ALUMINA AND KAPPA ALUMINA AT A REACTION TEMPERATURE BETWEEN ABOUT 140* AND 200*C.
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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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |