US3109709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic process for preparation of diborane
Assignee: Callery Chemical Co
•
Filing: 1955-04-08
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Granted: 1963-11-05
•
Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 William H Schechter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:28
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/06; C01B6/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A CYCLIC PROCESS FOR PREPARING DIBORANE WHICH COMPRISES REACTING SODIUM HYDRIDE AND BORON TRICHLORIDE IN THE PRESENCE OF A SUBSTANTIAL AMOUNT OF TRIMETHYL BORATE AND A SOLVENT SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE GLYCOL DIMETHYL ETHERS, DIOXANE, AND TETRAHYDROFURAN TO PRODUCE DIMETHOXYBORANE AND BY-PRODUCT SODIUM CHLORIDE, DISPROPORTIONATING THE DIMETHOXYBORANE TO PRODUCE DIBORANE, RECOVERING THE RESULTANT DIBROANE AS PRODUCT, ELECTROLYZING SAID BY-PRODUCT SODIUM CHLORIDE TO PRODUCE SODIUM AND CHLORINE, REACTING THE SODIUM THUS FORMED WITH HYDROGEN TO PRODUCE SODIUM HYDRIDE, SUPPLYING THE SODIUM HYDRIDE THUS FORMED FOR REACTION WITH BORON TRICHLORIDE, REACTING THE CHLORINE FORMED WITH CARBON AND A COMPOUND OF THE GROUP CONSISTING OF B2O3 AND B2O3 CONTAINING SALTS TO PRODUCE BORON TRICHLORIDE, AND SUPPLYING THE BORON TRICHLORIDE FORMED FOR REACTION WITH SODIUM HYDRIDE.
Claim 2
Dependent Claim
125 words
A CYCLIC PROCESS FOR PREPARING DIBORANE WHICH COMPRISES REACTING SODIUM HYDRIDE AND BORON TRICHLORIDE IN THE PRESENCE OF A SUBSTANTIAL AMOUNT OF TRIMETHYL BORATE AND A SOLVENT SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE GLYCOL DIMETHYL ETHERS, DIOXANE, AND TETRAHYDROFURAN TO PRODUCE DIMETHOXYBORANE AND BY-PRODUCT SODIUM CHLORIDE, DISPROPORTIONATING THE DIMETHOXYBORANE TO PRODUCE DIBORANE, RECOVERING THE RESULTANT DIBROANE AS PRODUCT, ELECTROLYZING SAID BY-PRODUCT SODIUM CHLORIDE TO PRODUCE SODIUM AND CHLORINE, REACTING THE SODIUM THUS FORMED WITH HYDROGEN TO PRODUCE SODIUM HYDRIDE, SUPPLYING THE SODIUM HYDRIDE THUS FORMED FOR REACTION WITH BORON TRICHLORIDE, REACTING THE CHLORINE FORMED WITH CARBON AND A COMPOUND OF THE GROUP CONSISTING OF B2O3 AND B2O3 CONTAINING SALTS TO PRODUCE BORON TRICHLORIDE, AND SUPPLYING THE BORON TRICHLORIDE FORMED FOR REACTION WITH SODIUM HYDRIDE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |