Patent US4546094A successfully refreshed from Google Patents.
US4546094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid adsorbent for unsaturated hydrocarbon and process for separation of unsaturated hydrocarbon from gas mixture
Assignee: Individual
•
Filing: 1984-03-08
•
Granted: 1985-10-08
•
Expires: 2004-03-08
Abstract
Abstract A solid adsorbent for an unsaturated hydrocarbon comprising (a) (i) a silver or copper(I) halide or (ii) a silver or copper(I) halide and the halide of a bivalent metal, or (iii) a silver or copper(I) halide and an aluminum halide, and (b) polystyrene or a derivative thereof. This solid adsorbent can effectively adsorb an unsaturated hydrocarbon such as ethylene from a gas mixture by contacting the gas mixture therewith at a temperature of -40° C. to 140° C. under normal pressures.
Inventors
- 👤 Hidefumi Hirai
- 👤 Makoto Komiyama
- 👤 Susumu Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:53
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/04; B01J20/046; B01J20/0203; B01J20/0233; B01J20/0248; B01J20/0274; B01J20/0288; B01J20/22; B01J20/26; B01J20/261; B01J20/264; B01J20/265; B01J20/267; B01J20/28; B01J20/28002; B01J20/28004; B01J20/30; B01J20/3092; B01J20/34; B01J20/3433; B01J20/3483; B01J20/3491; C; C07; C07C; C07C7/00; C07C7/12; B01J2220/00; B01J2220/40; B01J2220/42; B01J2220/46; B01J2220/50; B01J2220/56; B01J2220/58
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
154 words
A solid adsorbent for an unsaturated hydrocarbon comprising: (a) (i) a silver or copper(I) halide, (ii) a silver or copper(I) halide and 0.1 to 10 times by mole, based on the amount of the silver or copper(I) halide, of a calcium or magnesium halide, or (iii) a silver or copper(I) halide and 0.1 to 10 times by mole, based on the amount of silver or copper(I) halide, of an aluminum halide, and (b) polystyrene having a number-average molecular weight of 5000 to 500,000 or a styrene copolymer of 40 to 99 moles of styrene and 1 to 60 moles % of divinylbenzene in an amount such that the mole ratio of a monomer residual group of the polystyrene or styrene copolymer to the silver or copper(I) halide is 0.1 to 30, said solid adsorbent being prepared by mixing the components (a) and (b) in a solvent, followed by evaporating the solvent form the mixture.
Claim 2
Dependent Claim
154 words
A solid adsorbent for an unsaturated hydrocarbon comprising: (a) (i) a silver or copper(I) halide, (ii) a silver or copper(I) halide and 0.1 to 10 times by mole, based on the amount of the silver or copper(I) halide, of a calcium or magnesium halide, or (iii) a silver or copper(I) halide and 0.1 to 10 times by mole, based on the amount of silver or copper(I) halide, of an aluminum halide, and (b) polystyrene having a number-average molecular weight of 5000 to 500,000 or a styrene copolymer of 40 to 99 moles of styrene and 1 to 60 moles % of divinylbenzene in an amount such that the mole ratio of a monomer residual group of the polystyrene or styrene copolymer to the silver or copper(I) halide is 0.1 to 30, said solid adsorbent being prepared by mixing the components (a) and (b) in a solvent, followed by evaporating the solvent form the mixture.
Claim 3
Dependent Claim
20 words
A solid adsorbent as claimed in claim 1 wherein the silver halide is silver chloride, silver bromide, or silver iodide.
Claim 4
Dependent Claim
20 words
A solid adsorbent as claimed in claim 1 wherein the copper(I) halide is copper(I) chloride, copper(I) bromide, or copper(I) iodide.
Claim 5
Dependent Claim
20 words
A solid adsorbent as claimed in claim 1, wherein the calcium or magnesium halide is calcium chloride or magnesium chloride.
Claim 6
Dependent Claim
22 words
A solid adsorbent as claimed in claim 1 wherein the aluminum halides are aluminum chloride, aluminum fluoride, aluminum bromide, and aluminum iodide.
Claim 7
Dependent Claim
50 words
A solid adsorbent comprising (a)(i) or (a)(ii) and (b) as claimed in claim 1, wherein the solvent is carbon disulfide, dichloromethane, chloroform, tetrachloromethane, dichloroethane, trichloroethane, tetrachloroethane, benzene, toluene, xylene, chlorobenzene, cyclohexane, decalin, acetonitrile, propionitrile, acetone, methyl isobutyl ketone, ethyl acetate, water, an aqueous hydrogen halide solution, methanol, ethanol, or isopropanol.
Claim 8
Dependent Claim
30 words
A solid adsorbent comprising (a)(iii) and (b) as claimed in claim 1, wherein solvent is carbon disulfide, dichloromethane, chloroform, tetrachloromethane, dichloroethane, trichloroethane, tetrachloroethane, benzene, toluene, xylene, chlorobenzene, cyclohexane, or decalin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |