US4659552A
Expired / Lapsed
US
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Scavengers for the removal of impurities from arsine and phosphine
Assignee: Matheson Tri-Gas Inc
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Filing: 1986-07-21
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Granted: 1987-04-21
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Expires: 2006-07-21
Abstract
Abstract Disclosed are macroreticulate polymer scavengers functionalized with arsenic or phosphorus compounds. These scavengers are used for removing oxidants, protic acids and compounds that can be metallated, from arsine and phosphine.
Inventors
- 👤 Glenn M. Tom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:25
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C01; C01B; C01B6/00; C01B6/06; C01B6/065; B; B01; B01J; B01J49/00; B01J49/05; C01B25/00; C01B25/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
A process for removing oxidants, protic acids and compounds that can be metallated, from a hydride selected from the group consisting of arsine and phosphine, said process comprising (1) contacting the hydride with a scavenger comprising the reaction product of the hydride and a metallated macroreticulate polymer having a plurality of pendant functional groups or mixtures of functional groups having the general formula: ##STR3## where Ar is an aromatic hydrocarbon radical containing from one to three rings, R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen and alkyl hydrocarbon radicals containing from 1 to 12 carbon atoms and M is a metal selected from the group consisting of sodium, potassium and lithium, said metallated macroreticulate polymer having within its pores a compound of M selected from the group consisting of a 1-12 carbon alkyl compound and a hydride, or mixtures thereof and (2) separating the hydride from the macroreticulate polymer scavenger.
Claim 2
Dependent Claim
161 words
A process for removing oxidants, protic acids and compounds that can be metallated, from a hydride selected from the group consisting of arsine and phosphine, said process comprising (1) contacting the hydride with a scavenger comprising the reaction product of the hydride and a metallated macroreticulate polymer having a plurality of pendant functional groups or mixtures of functional groups having the general formula: ##STR3## where Ar is an aromatic hydrocarbon radical containing from one to three rings, R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen and alkyl hydrocarbon radicals containing from 1 to 12 carbon atoms and M is a metal selected from the group consisting of sodium, potassium and lithium, said metallated macroreticulate polymer having within its pores a compound of M selected from the group consisting of a 1-12 carbon alkyl compound and a hydride, or mixtures thereof and (2) separating the hydride from the macroreticulate polymer scavenger.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein M is lithium, R 1 is H and R 2 is pentyl.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein the metallated macroreticulate polymer is a metallated macroreticulate styrene-divinylbenzene copolymer.
References Cited (Backward Citations)
US4564509A
Cited
US4565677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |