Patent US3968199A successfully refreshed from Google Patents.
US3968199A
Expired / Lapsed
US
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Process for making silane
Assignee: Advanced Silicon Materials LLC
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Filing: 1974-02-25
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Granted: 1976-07-06
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Expires: 1994-02-25
Abstract
Abstract There is a process for manufacturing SiH4 by the disproportionation or redistribution of HSiCl3 which comprises feeding HSiCl3 into a bed of insoluble solid anion exchange resin containing tertiary amino or quaternary ammonium groups bonded to carbon therein, refluxing the HSiCl3 to vaporize disproportionated products to the upper portion of the bed and condensing liquid SiCl4 from the area in which HSiCl3 is refluxed, maintaining the temperature at the top of the bed above the boiling point of SiH4 and below the boiling point of H3SiCl, and recovering SiH4 from the bed substantially free of chlorosilanes.
Inventors
- 👤 Carl James Bakay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:41
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/08; C01B33/107; C01B33/10773; C01B33/04; C01B33/043
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
The process of producing SiH 4 which comprises providing HSiCl 3 in a bed of an insoluble, solid anion exchange resin congtaining tertiary amino or quaternary ammonium groups bonded to carbon thereof, maintaining the temperature of the bed where HSiCl 3 is provided sufficient to cause said HSiCl 3 to be disproportionated to form vaporous products which rise in the bed, and SiCl 4 , which is condensed, maintaining the temperature at the top of the bed above the boiling point of SiH 4 and below the boiling point of H 3 SiCl and recovering SiH 4 which is substantially free of chlorosilicon hydrides from the bed.
Claim 2
Dependent Claim
107 words
The process of producing SiH 4 which comprises providing HSiCl 3 in a bed of an insoluble, solid anion exchange resin congtaining tertiary amino or quaternary ammonium groups bonded to carbon thereof, maintaining the temperature of the bed where HSiCl 3 is provided sufficient to cause said HSiCl 3 to be disproportionated to form vaporous products which rise in the bed, and SiCl 4 , which is condensed, maintaining the temperature at the top of the bed above the boiling point of SiH 4 and below the boiling point of H 3 SiCl and recovering SiH 4 which is substantially free of chlorosilicon hydrides from the bed.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the resin is macroreticular and contains tertiary amino groups.
Claim 4
Dependent Claim
18 words
The process of claim 2 wherein the resin is derived from the reaction of a styrene and divinylbenzene.
Claim 5
Dependent Claim
19 words
The process of claim 1 wherein liquid HSiCl 3 is vaporized and the vapors are passed to said bed.
References Cited (Backward Citations)
US3069239A
Cited
DE2162537A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |