US2535010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transetherification of beta-ethersubstituted esters
Assignee: Rohm and Haas Co
•
Filing: 1948-10-02
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Granted: 1950-12-19
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Expires: 1968-10-02
Abstract
No abstract record available.
Inventors
- 👤 Willard J Croxall
- 👤 John O Van Hook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:18
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/73; C07C69/734
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS WHICH COMPRISES REACTING BY HEATING TOGETHER AT 75*C. AT 210*C. IN THE PRESENCE OF AN ALKALI METAL ACID SULFATE AS CATALYST AN ETHER ESTER OF THE FORMULA (RO)NCHCHNCOOR AND AN ALCOHOL OF THE FORMULA R''OH AND SEPARATING FROM THE REACTION MIXTURE AN ALCOHOL, ROH, N REPRESENTING AN INTEGER FROM ONE TO TWO, INCLUSIVE, R REPRESENTING THE HYDROCARBON RESIDUE OF A NEUTRAL, NON-TERITARY, MONOHYDRIC ALCOHOL, ROH HAVING NOT OVER EIGHT CARBON ATOMS, R'' REPRESENTING A RESIDUE OF A NEUTRAL, NON-TERTIARY ALCOHOL, R''OH, WHICH BOILS HIGHER THAN THE ALCOHOL ROH, THE RESIDUE WHEREOF IS FREE OF ACYCLIC B,$-UNSATURATION.
Claim 2
Dependent Claim
98 words
A PROCESS WHICH COMPRISES REACTING BY HEATING TOGETHER AT 75*C. AT 210*C. IN THE PRESENCE OF AN ALKALI METAL ACID SULFATE AS CATALYST AN ETHER ESTER OF THE FORMULA (RO)NCHCHNCOOR AND AN ALCOHOL OF THE FORMULA R''OH AND SEPARATING FROM THE REACTION MIXTURE AN ALCOHOL, ROH, N REPRESENTING AN INTEGER FROM ONE TO TWO, INCLUSIVE, R REPRESENTING THE HYDROCARBON RESIDUE OF A NEUTRAL, NON-TERITARY, MONOHYDRIC ALCOHOL, ROH HAVING NOT OVER EIGHT CARBON ATOMS, R'' REPRESENTING A RESIDUE OF A NEUTRAL, NON-TERTIARY ALCOHOL, R''OH, WHICH BOILS HIGHER THAN THE ALCOHOL ROH, THE RESIDUE WHEREOF IS FREE OF ACYCLIC B,$-UNSATURATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |