US3055934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of esters from tertiary olefins
Assignee: Texaco Inc
•
Filing: 1959-04-30
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Granted: 1962-09-25
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Expires: 1979-04-30
Abstract
No abstract record available.
Inventors
- 👤 Robert Y Heisler
- 👤 Howard V Hess
- 👤 George W Eckert
- 👤 Louis E Ruidisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A PROCESS FOR CONDENSING A TETIARY OLEFIN CONTAINING 4-5 CARBON ATOMS WITH AN ALIPHATIC HYDROCARBYL MONOCARBOXYLIC ACID CONTAINING 2-3 CARBON ATOMS IN THE PRESENCE OF SULFURIC ACID TO FORM THE CORRESPONDING TERTIARY ALKYL ESTER OF SAID CARBOXYLIC ACID, THE IMPROVEMENT WHICH COMPRISES: FORMING A HOMOGENOUS LIQUID PHASE REACTION MIXTURE CONTAINING ABOUT 0.5-2.5 WEIGHT PERCENT OF SULFURIC ACID AND 1.5-2.5 MOLS OF SAID TERITARY OLEFIN PER MOL OF SAID CARBOXYLIC ACID, CONTINUOUSLY PASSING SAID REACTION MIXTURE INTO A REACTION ZONE, MAINTAINING TEMPERATURE OF SAID REACTION MIXTURE IN SAID REACTION ZONE BETWEEN 95* AND 160* F., MAINTAINING PRESSURE IN SAID REACTION ZONE SUFFICIENTLY HIGH FOR HOLDING THE REACTION MIXTURE IN THE LIQUID PHASE, MAINTAINING AVERAGE RESIDENCE
Claim 2
Dependent Claim
115 words
IN A PROCESS FOR CONDENSING A TETIARY OLEFIN CONTAINING 4-5 CARBON ATOMS WITH AN ALIPHATIC HYDROCARBYL MONOCARBOXYLIC ACID CONTAINING 2-3 CARBON ATOMS IN THE PRESENCE OF SULFURIC ACID TO FORM THE CORRESPONDING TERTIARY ALKYL ESTER OF SAID CARBOXYLIC ACID, THE IMPROVEMENT WHICH COMPRISES: FORMING A HOMOGENOUS LIQUID PHASE REACTION MIXTURE CONTAINING ABOUT 0.5-2.5 WEIGHT PERCENT OF SULFURIC ACID AND 1.5-2.5 MOLS OF SAID TERITARY OLEFIN PER MOL OF SAID CARBOXYLIC ACID, CONTINUOUSLY PASSING SAID REACTION MIXTURE INTO A REACTION ZONE, MAINTAINING TEMPERATURE OF SAID REACTION MIXTURE IN SAID REACTION ZONE BETWEEN 95* AND 160* F., MAINTAINING PRESSURE IN SAID REACTION ZONE SUFFICIENTLY HIGH FOR HOLDING THE REACTION MIXTURE IN THE LIQUID PHASE, MAINTAINING AVERAGE RESIDENCE
References Cited (Backward Citations)
US1877291A
Cited
US2041193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |