Patent US4675309A successfully refreshed from Google Patents.
US4675309A
Expired / Lapsed
US
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Adsorbent for use in selective gas adsorption-separation and a process for producing the same
Assignee: Individual
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Filing: 1986-04-21
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Granted: 1987-06-23
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Expires: 2006-04-21
Abstract
Abstract There is disclosed an adsorbent comprising a macroreticular polystyrene type resin having amino groups selected from the group consisting of primary, secondary and tertiary amino groups and combinations thereof, and a copper(I) halide fixed to the macroreticular polystyrene type resin. Such an adsorbent has been found to be advantageously employed for the selective adsorption-separation of a gas from a gaseous mixture.
Inventors
- 👤 Hidefumi Hirai
- 👤 Makoto Komiyama
- 👤 Kazunori Kurima
- 👤 Keiichiro Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:28
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/22; B01J20/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
90 words
An adsorbent for use in the selective adsorption-separation of a gas from a gaseous mixture, which comprises a macroreticular polystyrene resin having amino groups selected from the group consisting of primary, secondary and tertiary amino groups and combinations thereof, and a copper(I) halide fixed to said macroreticular polystyrene resin in an amount of at least 1.0 milliequivalents per milliequivalent of the amino groups contained in said macroreticular polystryene resin, said adsorbent being prepared by mixing said macroreticular polystyrene resin and a copper(I) halide in a solvent, and removing said solvent.
Claim 2
Dependent Claim
90 words
An adsorbent for use in the selective adsorption-separation of a gas from a gaseous mixture, which comprises a macroreticular polystyrene resin having amino groups selected from the group consisting of primary, secondary and tertiary amino groups and combinations thereof, and a copper(I) halide fixed to said macroreticular polystyrene resin in an amount of at least 1.0 milliequivalents per milliequivalent of the amino groups contained in said macroreticular polystryene resin, said adsorbent being prepared by mixing said macroreticular polystyrene resin and a copper(I) halide in a solvent, and removing said solvent.
Claim 3
Dependent Claim
37 words
An absorbent according to claim 1, wherein said macroreticular polystyrene resin comprises a crosslinked copolymer of substituted or unsubstituted styrene monomer units and divinyl aromatic compound monomer units, and said amino groups bonded to said crosslinked copolymer.
Claim 4
Dependent Claim
26 words
An adsorbent according to claim 2, wherein said substituted or unsubstituted styrene is a member selected from the group consisting of styrene, α-methylstyrene, p-methylstyrene and p-tert-butylstyrene.
Claim 5
Dependent Claim
24 words
An adsorbent according to claim 2, wherein said divinyl aromatic compound is a member selected from the group consisting of divinylbenzenes, divinyltoluenes and divinylethylbenzenes.
Claim 6
Dependent Claim
32 words
An adsorbent according to claim 1, wherein said macroreticular polystyrene resin has a specific surface area of 1 to 1,000 m 2 /g as measured according to the BET method using nitrogen.
Claim 7
Dependent Claim
38 words
An adsorbent according to claim 1, wherein said copper(I) halide is fixed to said macroreticular polystyrene resin in an amount of at least 1.5 milliequivalents per milliequivalent of the amino groups contained in said macroreticular polystyrene type resin.
Claim 8
Dependent Claim
83 words
A process for producing an adsorbent for use in the selective adsorption and separation of a gas from a gaseous mixture, which comprises mixing a macroreticular polystryene resin having amino groups selected from the group consisting of primary, secondary and tertiary amino groups and combinatioins thereof and a copper (I) halide in a solvent, said copper(I) halide being employed in an amount of at least 1.0 milliequivalents per milliequivalent of the amino groups contained in said macroreticular polystyrene resin, and removing said solvent.
Claim 9
Dependent Claim
83 words
A process for producing an adsorbent for use in the selective adsorption and separation of a gas from a gaseous mixture, which comprises mixing a macroreticular polystryene resin having amino groups selected from the group consisting of primary, secondary and tertiary amino groups and combinatioins thereof and a copper (I) halide in a solvent, said copper(I) halide being employed in an amount of at least 1.0 milliequivalents per milliequivalent of the amino groups contained in said macroreticular polystyrene resin, and removing said solvent.
Claim 10
Dependent Claim
66 words
A process according to claim 7, wherein said solvent is a member selected from the group consisting of water, an aqueous hydrochloric acid, an aqueous ammonia, an alcohol having 1 to 6 carbon atoms, an α-olefin having 4 to 8 carbon atoms, a hydrocarbon cyanide having 2 to 8 carbon atoms, and a mixture of water and a hydrocarbon cyanide having 2 to 8 carbon atoms.
References Cited (Backward Citations)
US4019879A
Cited
US4546094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |