US4818255A
Expired / Lapsed
US
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Material for gas separation
Assignee: National Institute of Advanced Industrial Science and Technology
•
Filing: 1988-02-09
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Granted: 1989-04-04
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Expires: 2008-02-09
Abstract
Abstract A material for gas separation obtained by mixing a copper compound and a benzoin and/or an ascorbic acid in a solvent.
Inventors
- 👤 Junichi Matsuura
- 👤 Tatsuki Oguchi
- 👤 Munehisa Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/52; B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; B01D61/00; B01D61/38; C01B3/501; C01B3/503; C01B32/00; C01B32/40; C01B2203/00; C01B2203/04; C01B2203/0415; C01B2203/0465; C01B2203/047; C01B2203/0475
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
21 words
A material for gas separation obtained by mixing a copper compound and a benzoin and/or an ascorbic acid in a solvent.
Claim 2
Dependent Claim
21 words
A material for gas separation obtained by mixing a copper compound and a benzoin and/or an ascorbic acid in a solvent.
Claim 3
Dependent Claim
30 words
The material for gas separation according to claim 1, wherein the solvent is at least one member selected from the group consisting of an imidazole, a pyridine and a polyethylenepolyamine.
Claim 4
Dependent Claim
41 words
The material for gas separation according to claim 2, wherein at least one of the copper compound, the benzoin, the ascorbic acid, the imidazole, the pyridine and the polyethylenepolyamine is bound to or supported on a membrane- or particle-form polymer carrier.
Claim 5
Dependent Claim
22 words
A selective gas permeation membrane comprising a supporting membrane and a material for gas separation as defined in claim 1, supported thereon.
Claim 6
Dependent Claim
18 words
A method for gas separation, wherein a selective gas permeation membrane as defined in claim 4 is used.
Claim 7
Dependent Claim
24 words
A method for gas separation, wherein a material for gas separation as defined in claim 1 is used as a selective gas absorbing solution.
Claim 8
Dependent Claim
32 words
A method for gas separation, wherein a material for gas separation as defined in claim 1 is used for separating carbon monoxide in good yield from a gas mixture containing carbon monoxide.
Claim 9
Dependent Claim
43 words
A composition for gas separation comprising (a) a reaction mixture obtained by mixing a copper compound and a benzoin and/or an ascorbic acid in a solvent and (b) a reaction mixture obtained by mixing a palladium compound and an alkene in a solvent.
Claim 10
Dependent Claim
43 words
A composition for gas separation comprising (a) a reaction mixture obtained by mixing a copper compound and a benzoin and/or an ascorbic acid in a solvent and (b) a reaction mixture obtained by mixing a palladium compound and an alkene in a solvent.
Claim 11
Dependent Claim
30 words
The composition for gas separation according to claim 8, wherein the solvent is at least one member selected from the group consisting of an imidazole, a pyridine and a polyethylenepolyamine.
Claim 12
Dependent Claim
41 words
The composition for gas separation according to claim 9, wherein at least one of the copper compound, the benzoin, the ascorbic acid, the imidazole, the pyridine and the polyethylenepolyamine is bound to or supported on a membrane- or particle-form polymer carrier.
Claim 13
Dependent Claim
22 words
A selective gas permeation membrane comprising a supporting membrane and a composition for gas separation as defined in claim 8, supported thereon.
Claim 14
Dependent Claim
18 words
A method for gas separation, wherein a selective gas permeation membrane as defined in claim 11 is used.
Claim 15
Dependent Claim
24 words
A method for gas separation, wherein a composition for gas separation as defined in claim 8 is used as a selective gas absorbing solution.
Claim 16
Dependent Claim
32 words
A method for gas separation, wherein a composition for gas separation as defined in claim 8 is used for separating carbon monoxide in good yield from a gas mixture containing carbon monoxide.
Claim 17
Dependent Claim
49 words
A composition for gas separation comprising (a) a reaction product of oxygen with a reaction mixture obtained by mixing a copper compound and a benzoin and/or an ascorbic acid in a solvent and (b) a reaction mixture obtained by mixing a palladium compound and an alkene in a solvent.
Claim 18
Dependent Claim
49 words
A composition for gas separation comprising (a) a reaction product of oxygen with a reaction mixture obtained by mixing a copper compound and a benzoin and/or an ascorbic acid in a solvent and (b) a reaction mixture obtained by mixing a palladium compound and an alkene in a solvent.
Claim 19
Dependent Claim
30 words
The composition for gas separation according to claim 15, wherein the solvent is at least one member selected from the group consisting of an imidazole, a pyridine and a polyethylenepolyamine.
Claim 20
Dependent Claim
41 words
The composition for gas separation according to claim 16, wherein at least one of the copper compound, the benzoin, the ascorbic acid, the imidazole, the pyridine and the polyethylenepolyamine is bound to or supported on a membrane- or particle-form polymer carrier.
Claim 21
Dependent Claim
22 words
A selective gas permeation membrane comprising a supporting membrane and a composition for gas separation as defined in claim 15, supported thereon.
Claim 22
Dependent Claim
18 words
A method for gas separation, wherein a selective gas permeation membrane as defined in claim 18 is used.
Claim 23
Dependent Claim
24 words
A method for gas separation, wherein a composition for gas separation as defined in claim 15 is used as a selective gas absorbing solution.
Claim 24
Dependent Claim
32 words
A method for gas separation, wherein a composition for gas separation as defined in claim 15 is used for separating carbon monoxide in good yield from a gas mixture containing carbon monoxide.
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |