US2578684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glycol esters of acyloxycarboxylic acids
Assignee: Individual
•
Filing: 1948-06-18
•
Granted: 1951-12-18
•
Expires: 1968-06-18
Abstract
No abstract record available.
Inventors
- 👤 Edward M Filachione
- 👤 Martin L Fein
- 👤 Charles H Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS COMPRISING SUBJECTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A GLYCOL CONTAINING FROM 2 TO 6 CARBON ATOMS AND A SATURATED ESTER OF SAID GLYCOL CONTAINING AT LEAST ONE FREE HYDROXYL GROUP TO ALCOHYLSIS BY HEATING IT AT REACTION TEMPERATURE AND IN THE PRESENCE OF AN ESTERFICATION CATALYST, WITH A LOWER ALKYL ESTER OF A LOWER ALIPHATIC ALPHA-HYDROXYMONOCARBOXYLIC ACID, WITH CONCURRENT REMOVAL OF THE ALCOHOL FORMED FROM THE REACTION MIXTURE, AND THEN REACTING THE RESULTING GLYCOL ESTER WITH AN ACYLATING AGENT.
Claim 2
Dependent Claim
84 words
A PROCESS COMPRISING SUBJECTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A GLYCOL CONTAINING FROM 2 TO 6 CARBON ATOMS AND A SATURATED ESTER OF SAID GLYCOL CONTAINING AT LEAST ONE FREE HYDROXYL GROUP TO ALCOHYLSIS BY HEATING IT AT REACTION TEMPERATURE AND IN THE PRESENCE OF AN ESTERFICATION CATALYST, WITH A LOWER ALKYL ESTER OF A LOWER ALIPHATIC ALPHA-HYDROXYMONOCARBOXYLIC ACID, WITH CONCURRENT REMOVAL OF THE ALCOHOL FORMED FROM THE REACTION MIXTURE, AND THEN REACTING THE RESULTING GLYCOL ESTER WITH AN ACYLATING AGENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |