US2816918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonation method
Assignee: Millennium Petrochemicals Inc
•
Filing: 1955-11-23
•
Granted: 1957-12-17
•
Expires: 1975-11-23
Abstract
No abstract record available.
Inventors
- 👤 Wynkoop Raymond
- 👤 John F Nobis
- 👤 John J Giachetto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:25
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A PROCESS FOR PREPARATION OF ALKALI SALTS OF CARBOXYLIC ACIDS BY REACTING AN ALKALI METAL WITH AN OLEFIN FROM THE GROUP CONSISTING OF CONJUGATED DIENES AND VINYL AROMATIC HYDROCARBONS TO PREPARE A METALATION REACTION MIXTURE CONTAINING ALKALI METAL DERIVATIVES OF DIMERS OF OLEFIN INCLUDING DIALKALI METAL DERIVATIVES OF DIMERS OF SAID OLEFIN, AND CARBONATING SIAD ALKALI METAL DERIVATIVES FOR CONVERSION THEREOF TO ALKALI METAL SALTS OF CARBOXYLIC ACIDS INCLUDING DIALKALI METAL SALTS OF DICARBOXYLIC ACIDS HAVING TWO MORE CARBON ATOMS PER MOLECULE THAN THE DIMER OF SAID OLEFIN, THE IMPROVEMENT WHICH COMPRISES CARBONATING SAID ALKALI METAL DERIVATIVES BY ADDING SAID DERIVATIVES TO A SOLUTION OF CARBON DIOXIDE IN AN INERT LIQUID SOLVENT FOR CARBON DIOXIDE SAID CARBONATION BEING CARRIED OUT BY EFFECTIVELY DISTRIBUTING SAID DERIVATIVES IN A SUBSTANTIALLY LARGER AMOUNT BY WEIGHT OF SAID SOLUTION CONTAINING AN AMOUNT OF CARBON DIOXIDE IN EXCESS OF THE AMOUNT THEORECTICALLY REQUIRED TO CARBONATE SAID DERIVATIVES.
Claim 2
Dependent Claim
153 words
IN A PROCESS FOR PREPARATION OF ALKALI SALTS OF CARBOXYLIC ACIDS BY REACTING AN ALKALI METAL WITH AN OLEFIN FROM THE GROUP CONSISTING OF CONJUGATED DIENES AND VINYL AROMATIC HYDROCARBONS TO PREPARE A METALATION REACTION MIXTURE CONTAINING ALKALI METAL DERIVATIVES OF DIMERS OF OLEFIN INCLUDING DIALKALI METAL DERIVATIVES OF DIMERS OF SAID OLEFIN, AND CARBONATING SIAD ALKALI METAL DERIVATIVES FOR CONVERSION THEREOF TO ALKALI METAL SALTS OF CARBOXYLIC ACIDS INCLUDING DIALKALI METAL SALTS OF DICARBOXYLIC ACIDS HAVING TWO MORE CARBON ATOMS PER MOLECULE THAN THE DIMER OF SAID OLEFIN, THE IMPROVEMENT WHICH COMPRISES CARBONATING SAID ALKALI METAL DERIVATIVES BY ADDING SAID DERIVATIVES TO A SOLUTION OF CARBON DIOXIDE IN AN INERT LIQUID SOLVENT FOR CARBON DIOXIDE SAID CARBONATION BEING CARRIED OUT BY EFFECTIVELY DISTRIBUTING SAID DERIVATIVES IN A SUBSTANTIALLY LARGER AMOUNT BY WEIGHT OF SAID SOLUTION CONTAINING AN AMOUNT OF CARBON DIOXIDE IN EXCESS OF THE AMOUNT THEORECTICALLY REQUIRED TO CARBONATE SAID DERIVATIVES.
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) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |