Patent US2548679A successfully refreshed from Google Patents.
US2548679A
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Preparation of alkylthiohydroxypropyl quaternary ammonium halides
Assignee: Sharples Chemicals Inc
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Filing: 1948-07-10
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Granted: 1951-04-10
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Expires: 1968-07-10
Abstract
No abstract record available.
Inventors
- 👤 John F Olin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:48
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; B; B01; B01J; B01J27/00; B01J27/06; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS COMPRISING MIXING UNDER TEMPERATURE CONDITIONS BETWEEN 50* C. AND 150* C. AN ALKYL MERCAPTAN IN WHICH THE ALKYL RADICAL HAS FROM 1 TO 30 CARBON ATOMS, AN EPIHALOHYDRIN, AND A TERTIARY AMINE FROM THE GROUP CONSISTING OF TRIALKYL AMINES, ALLYL DIALKYL AMINES, BENZYL DIALKYL AMINES, N-ALKYL PIPERIDINES, PYRIDINE AND ISOQUINOLINE, WHEREIN THE ALKYL GROUPS CONTAIN FROM 1 TO 18 CARBON ATOMS; AND MAINTAINING THE FOREGOING IN MUTUAL CONTACT FOR STOICHIOMETRIC REACTION UNTIL THE CORRESPONDING ALKYLTHIOHYDROXYPROPYL QUATERNARY AMMONIUM HALIDE IS OBTAINED.
Claim 2
Dependent Claim
82 words
A PROCESS COMPRISING MIXING UNDER TEMPERATURE CONDITIONS BETWEEN 50* C. AND 150* C. AN ALKYL MERCAPTAN IN WHICH THE ALKYL RADICAL HAS FROM 1 TO 30 CARBON ATOMS, AN EPIHALOHYDRIN, AND A TERTIARY AMINE FROM THE GROUP CONSISTING OF TRIALKYL AMINES, ALLYL DIALKYL AMINES, BENZYL DIALKYL AMINES, N-ALKYL PIPERIDINES, PYRIDINE AND ISOQUINOLINE, WHEREIN THE ALKYL GROUPS CONTAIN FROM 1 TO 18 CARBON ATOMS; AND MAINTAINING THE FOREGOING IN MUTUAL CONTACT FOR STOICHIOMETRIC REACTION UNTIL THE CORRESPONDING ALKYLTHIOHYDROXYPROPYL QUATERNARY AMMONIUM HALIDE IS OBTAINED.
References Cited (Backward Citations)
US2108765A
Cited
FR771746A
Cited
FR782930A
Cited
GB436793A
Cited
US2087132A
Cited
DE681850C
Cited
DE682393C
Cited
FR806662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |