Patent US3190912A successfully refreshed from Google Patents.
US3190912A
Expired / Lapsed
US
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Process for preparing esters
Assignee: Millennium Petrochemicals Inc
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Filing: 1962-05-02
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Granted: 1965-06-22
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Expires: 1982-05-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:08
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A VAPOR PHASE PROCESS FOR THE PREPARATION OF UNSATURATED ESTERS WHICH COMPRISES PASSING A SUBSTANTIALLY ANHYDROUS GAS MIXTURE CONSISTING ESSENTIALLY OF AN UNSATURATED ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKENES, BUTADIENE, STYRENE, P-CHLOROSTYRENE, ALLYL ACETATE, ALLYL BENZENE, ETHYL ACRYLATE AND HEXADIENE1,5, AN ORGANIC CARBOXYLIC ACID HAVING THE FORMULA R''COOH, WHEREIN R'' IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, ARALKYL, CYCLOALKYL, ARYL AND CHLORO AND CARBOXY SUBSTITUTED DERIVATIVES THEREOF, HAVING FROM 1 TO 17 CARBON ATOMS PER MOLECULE, AND OXYGEN OVER A SOLID CATALYST SELECTED FROM THE GROUP CONSISTING OF GROUP VIII NOBLE METALS, OXIDES AND SALTS THEREOF.
Claim 2
Dependent Claim
101 words
A VAPOR PHASE PROCESS FOR THE PREPARATION OF UNSATURATED ESTERS WHICH COMPRISES PASSING A SUBSTANTIALLY ANHYDROUS GAS MIXTURE CONSISTING ESSENTIALLY OF AN UNSATURATED ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKENES, BUTADIENE, STYRENE, P-CHLOROSTYRENE, ALLYL ACETATE, ALLYL BENZENE, ETHYL ACRYLATE AND HEXADIENE1,5, AN ORGANIC CARBOXYLIC ACID HAVING THE FORMULA R''COOH, WHEREIN R'' IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, ARALKYL, CYCLOALKYL, ARYL AND CHLORO AND CARBOXY SUBSTITUTED DERIVATIVES THEREOF, HAVING FROM 1 TO 17 CARBON ATOMS PER MOLECULE, AND OXYGEN OVER A SOLID CATALYST SELECTED FROM THE GROUP CONSISTING OF GROUP VIII NOBLE METALS, OXIDES AND SALTS THEREOF.
References Cited (Backward Citations)
US2598263A
Cited
US2739169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |