US2684969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of hydroxy amides from hydroxy amines and carboxylic acid halides
Assignee: Colgate Palmolive Co
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Filing: 1950-12-28
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Granted: 1954-07-27
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Expires: 1970-12-28
Abstract
No abstract record available.
Inventors
- 👤 Krems Irving Joseph
- 👤 Goldsmith Henry Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:40
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR THE PREPARATION OF HYDROXY AMIDES WHICH COMPRISES ESTABLISHING A MIXTURE CONTAINING A STABLE WATER IMMISCIBLE SOLVENT FOR HYDROXY AMIDES AND AN AQUEOUS SOLUTION OF AN HYDROXY AMINE HAVING AN ALKYL GROUP JOINING AN HYDROXY GROUP TO AN AMINO GROUP WHICH HAS AT LEAST ONE REPLACEABLE HYDROGEN ATOM, SLOWLY ADDING A CARBOXYLIC ACID HALIDE WHEN THE MIXTURE IS AT A TEMPERATURE BELOW ABOUT 50* C. IN A QUANTITY SUFFICIENT TO REDUCE THE PH OF THE MIXTURE TO ABOUT 8.5 TO 9, AND THEREAFTER ADDING A SECOND APPROXIMATELY EQUAL QUANTITY OF CARBOXYLIC ACID HALIDE TOGETHER WITH AN ACCEPTOR FOR LIBERATED HYDROGEN HALIDE WHILE MAINTAINING THE PH OF THE MIXTURE BETWEEN ABOUT 8.5 AND 9, AND SEPARATING THE HYDROXY AMIDE FROM THE SOLVENT AND THE WATER.
Claim 2
Dependent Claim
126 words
A PROCESS FOR THE PREPARATION OF HYDROXY AMIDES WHICH COMPRISES ESTABLISHING A MIXTURE CONTAINING A STABLE WATER IMMISCIBLE SOLVENT FOR HYDROXY AMIDES AND AN AQUEOUS SOLUTION OF AN HYDROXY AMINE HAVING AN ALKYL GROUP JOINING AN HYDROXY GROUP TO AN AMINO GROUP WHICH HAS AT LEAST ONE REPLACEABLE HYDROGEN ATOM, SLOWLY ADDING A CARBOXYLIC ACID HALIDE WHEN THE MIXTURE IS AT A TEMPERATURE BELOW ABOUT 50* C. IN A QUANTITY SUFFICIENT TO REDUCE THE PH OF THE MIXTURE TO ABOUT 8.5 TO 9, AND THEREAFTER ADDING A SECOND APPROXIMATELY EQUAL QUANTITY OF CARBOXYLIC ACID HALIDE TOGETHER WITH AN ACCEPTOR FOR LIBERATED HYDROGEN HALIDE WHILE MAINTAINING THE PH OF THE MIXTURE BETWEEN ABOUT 8.5 AND 9, AND SEPARATING THE HYDROXY AMIDE FROM THE SOLVENT AND THE WATER.
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) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |