Patent US3227754A successfully refreshed from Google Patents.
US3227754A
Expired / Lapsed
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Quaternary ammonium borohydride compositions and method of preparation
Assignee: Metal Hydrides Inc
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Filing: 1963-01-28
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Granted: 1966-01-04
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Bragdon
- 👤 Edward A Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:24
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/06; C07C209/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN A MEHTOD FOR PREPARING A QUATERNARY AMMONIUM BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF TETRAETHYLAMONIUM BOROHYDRIDE, TETRAPROPYLAMMONIUM BOROHYDRIDE, BENZYLTRIMETHYLAMMONIUM BOROHYDRIDE, TRIETHYLMETHYLAMMONIUM BOROHYDRIDE, ETHYLPYRIDINIUM BOROHYDRIDE, AND METHYLISOQUINOLINIUM BOROHYDRIDE WHEREIN THE QUATERNARY AMMONIUM BOROHYDRIDE IS FORMED BY THE REACTION IN AN AQUEOUS MEDIUM OF A WATER-SOLUBLE QUATERNARY AMMONIUM SALT CORRESPONDING TO THE QUATERNARY AMMONIUM BOROHYDRIDE WITH A SUBSTANTIALLY EQUIMOLAR AMOUNT OF AN ALKALI METAL BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE AND POTASSIUM BOROHYDRIDE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF A COMPOUND WHICH IS SUBSTANTIALLY INERT UNDER THE CONDITIONS OF SAID REACTION AND WHICH IS SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE, POTASSIUM FLUORIDE, POTASSIUM CARBONATE, POTASSIUM TARTRATE, POTASSIUM SULFATE, SODIUM CARBONATE, SODIUM SULFATE, AND POTASSIUM CITRATE, AND ADJUSTING THE AMOUNT OF WATER IN THE REACTION MIXTURE SUCH THAT TWO IMMISCIBLE LAYERS ARE FORMED, ONE OF WHICH IS ESSENTIALLY AN AQUEOUS SOLUTION OF THE QUATERNARY AMMONIUM BOROHYDRIDE AD THE OTHER IS ESSENTIALLY AN AQUEOUS SOLUTION OF SAID COMPOUND AND A SALT CORRESPONDING TO SAID QUATERNARY AMMONIUM SALT.
Claim 2
Dependent Claim
176 words
IN A MEHTOD FOR PREPARING A QUATERNARY AMMONIUM BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF TETRAETHYLAMONIUM BOROHYDRIDE, TETRAPROPYLAMMONIUM BOROHYDRIDE, BENZYLTRIMETHYLAMMONIUM BOROHYDRIDE, TRIETHYLMETHYLAMMONIUM BOROHYDRIDE, ETHYLPYRIDINIUM BOROHYDRIDE, AND METHYLISOQUINOLINIUM BOROHYDRIDE WHEREIN THE QUATERNARY AMMONIUM BOROHYDRIDE IS FORMED BY THE REACTION IN AN AQUEOUS MEDIUM OF A WATER-SOLUBLE QUATERNARY AMMONIUM SALT CORRESPONDING TO THE QUATERNARY AMMONIUM BOROHYDRIDE WITH A SUBSTANTIALLY EQUIMOLAR AMOUNT OF AN ALKALI METAL BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE AND POTASSIUM BOROHYDRIDE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF A COMPOUND WHICH IS SUBSTANTIALLY INERT UNDER THE CONDITIONS OF SAID REACTION AND WHICH IS SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE, POTASSIUM FLUORIDE, POTASSIUM CARBONATE, POTASSIUM TARTRATE, POTASSIUM SULFATE, SODIUM CARBONATE, SODIUM SULFATE, AND POTASSIUM CITRATE, AND ADJUSTING THE AMOUNT OF WATER IN THE REACTION MIXTURE SUCH THAT TWO IMMISCIBLE LAYERS ARE FORMED, ONE OF WHICH IS ESSENTIALLY AN AQUEOUS SOLUTION OF THE QUATERNARY AMMONIUM BOROHYDRIDE AD THE OTHER IS ESSENTIALLY AN AQUEOUS SOLUTION OF SAID COMPOUND AND A SALT CORRESPONDING TO SAID QUATERNARY AMMONIUM SALT.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |