Patent US3755334A successfully refreshed from Google Patents.
US3755334A
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New quaternization method
Assignee: Individual
•
Filing: 1970-06-26
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Granted: 1973-08-28
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Expires: 1990-06-26
Abstract
Abstract A method for the synthesis of quaternary ammonium compounds and tertiary amines from primary and secondary amines with an alkylating agent and an organic base.
Inventors
- 👤 H Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:40
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/023; C07C; C07C209/00; C07C209/04; C07C209/06; C07C209/12; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
The method of claim 1, wherein the organic base is selected from the group consisting of sterically hindered piperidines, sterically hindered pyridines, sterically hindered anilines and sterically hindered butylamines.
Claim 2
Dependent Claim
14 words
The method of claim 1 wherein the alkylating agent is an organic electrophilic material.
Claim 3
Dependent Claim
35 words
The method of claim 3 wherein the organic electrophilic material is a member selected from the group consisting of aliphatic halides, aliphatic sulfates, aliphatic sulfonates, substituted aliphatic halides, substituted aliphatic sulfates, and substituted aliphatic sulfonates.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the reaction is carried out at room temperature.
Claim 5
Dependent Claim
36 words
The method of claim 1 wherein the separation is carried out by a means selected from the group consisting of distillation, centrifugation, chromatography, filtration, extraction, decantation, evaporation, separation by solubility differences, recrystallizatiOn, and any combination thereof.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein the reaction is terminated at a stage prior to the quaternary ammonium stage.
Claim 7
Dependent Claim
15 words
The method of claim 7 wherein the reaction is terminated at a tertiary amine stage.
Claim 8
Dependent Claim
14 words
The method of claim 1 wherein the reaction mixture is reacted in a solvent.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |