Patent US2556134A successfully refreshed from Google Patents.
US2556134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thioether esters
Assignee: Rohm and Haas Co
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Filing: 1948-10-02
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Granted: 1951-06-05
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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
2026-11-04 09:47
CPC Classifications
C; C07; C07C; C07C327/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS WHICH COMPRISES REACTING BY HEATING TOGETHER AT 90* TO 250* C. IN THE PRESENCE OF AN ALCOHOLYSIS CATALYST A MERCAPTAN; R''SH, AND AN ETHER ESTER, (RO)NCHCHNCOOR, AND SEPARATING AN ALCOHOL, ROH, FROM THE REACTION MIXTURE, N REPRESENTING AN INTEGER FROM ONE TO TWO, R REPRESENTING A MONOVALENT, SATURATED, ALIPHATIC HYDROCARBON RADICAL, ATTACHED TO OXYGEN AT A NON-TERTIARY CARBON ATOM THEREOF AND CONTAINING NOT OVER EIGHT CARBON ATOMS, R'' REPRESENTING THE RESIDUE OF THE MERCAPTAN, R''SH, WHICH BOILS HIGHER THAN THE ALCOHOL ROH AND WHICH IS A MEMBER OF THE CLASS CONSISTING OF ALKYL AND PHENYL-ALKYL MERCAPTANS OF NOT OVER 18 CARBON ATOMS.
Claim 2
Dependent Claim
104 words
A PROCESS WHICH COMPRISES REACTING BY HEATING TOGETHER AT 90* TO 250* C. IN THE PRESENCE OF AN ALCOHOLYSIS CATALYST A MERCAPTAN; R''SH, AND AN ETHER ESTER, (RO)NCHCHNCOOR, AND SEPARATING AN ALCOHOL, ROH, FROM THE REACTION MIXTURE, N REPRESENTING AN INTEGER FROM ONE TO TWO, R REPRESENTING A MONOVALENT, SATURATED, ALIPHATIC HYDROCARBON RADICAL, ATTACHED TO OXYGEN AT A NON-TERTIARY CARBON ATOM THEREOF AND CONTAINING NOT OVER EIGHT CARBON ATOMS, R'' REPRESENTING THE RESIDUE OF THE MERCAPTAN, R''SH, WHICH BOILS HIGHER THAN THE ALCOHOL ROH AND WHICH IS A MEMBER OF THE CLASS CONSISTING OF ALKYL AND PHENYL-ALKYL MERCAPTANS OF NOT OVER 18 CARBON ATOMS.
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) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |