Patent US3373189A successfully refreshed from Google Patents.
US3373189A
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Vapor phase process for producing vinyl acetate from ethylene
Assignee: Millennium Petrochemicals Inc
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Filing: 1965-07-09
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Granted: 1968-03-12
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Expires: 1985-07-09
Abstract
No abstract record available.
Inventors
- 👤 David W Lum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:17
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/28; B01J31/30; B01J23/00; B01J23/38; B01J23/40; B01J23/44; B01J27/00; B01J27/06; B01J31/02; B01J31/04; B01J31/16; B01J31/1616; C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055; B01J21/00; B01J21/18; B01J2231/00; B01J2231/70; Y; Y02; Y02P; Y02P20/00; Y02P20/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE PROCESS FOR THE PREPARATION OF VINYL ACETATE WHICH COMPRISES SEQUENTIALLY CONTACTING, AT TEMPERATURES WITHIN THE RANGE OF ABOUT 110* TO 250*C., A FEED MIXTURE CONSISTING OF ETHYLENE, ABOUT 5 TO 40% BY VOLUME OF OXYGEN BASED ON ETHYLENE AND 2 TO 10% BY VOLUME OF WATER BASED ON THE TOTAL VOLUME OF ETHYLENE AND OXYGEN IN VAPOR PHASE WITH (A) A CARBON-SUPPORTED PALLADIUM GROUP METAL-OXIDE OR SALT CATALYST, AND (B) AN ALUMINA-SUPPORTED PALLADIUM GROUP METAL OXIDE OR SALT CATALYST, AND RECOVERING A GASEOUS REACTION MIXTURE CONTAINING SAID VINYL ACETATE.
Claim 2
Dependent Claim
90 words
THE PROCESS FOR THE PREPARATION OF VINYL ACETATE WHICH COMPRISES SEQUENTIALLY CONTACTING, AT TEMPERATURES WITHIN THE RANGE OF ABOUT 110* TO 250*C., A FEED MIXTURE CONSISTING OF ETHYLENE, ABOUT 5 TO 40% BY VOLUME OF OXYGEN BASED ON ETHYLENE AND 2 TO 10% BY VOLUME OF WATER BASED ON THE TOTAL VOLUME OF ETHYLENE AND OXYGEN IN VAPOR PHASE WITH (A) A CARBON-SUPPORTED PALLADIUM GROUP METAL-OXIDE OR SALT CATALYST, AND (B) AN ALUMINA-SUPPORTED PALLADIUM GROUP METAL OXIDE OR SALT CATALYST, AND RECOVERING A GASEOUS REACTION MIXTURE CONTAINING SAID VINYL ACETATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |