US4064043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid phase adsorption using partially pyrolyzed polymer particles
Assignee: Rohm and Haas Co
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Filing: 1976-02-02
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Granted: 1977-12-20
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Expires: 1996-02-02
Abstract
Abstract Partially pyrolyzed particles of macroporous resinous polymer have improved structural stability and utility. Pyrolyzed preformed beads are useful as adsorbents in both gaseous and liquid media to remove impurities such as vinylchloride monomer from gases, aromatic compounds such as barbituates from blood, and phenolics from industrial waste streams. Pyrolyzed materials are also useful as catalysts in industrial and laboratory applications due to the controllable surface area and due to a variety of metals, among other things, that may be incorporated into the particles prior to pyrolysis. Preferred adsorbents are prepared from pyrolyzed beads of macroreticular ion exchange resins.
Inventors
- 👤 Carl J. Kollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:05
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/22; B01D; B01D53/00; B01D53/02; C; C08; C08F; C08F8/00; C08F8/50; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A process for separating an organic component from a non-body liquid medium which comprises contacting the liquid containing the organic component to be separated with particles of a partially pyrolyzed macroporous synthetic polymer produced by the controlled thermal degradation of a macroporous synthetic polymer containing a carbon-fixing moiety and derived from one or more ethylenically unsaturated monomers, or monomers which are condensed to yield macroporous polymers, or mixtures thereof, which partially pyrolyzed macroporous synthetic polymer contains: (a) at least 85% by weight of carbon, (b) multimodal pore distribution with macropores ranging in size from about 50 A to about 100,000 A in average critical dimension and (c) a carbon to hydrogen atom ratio of between about 1.5 : 1 and 20 : 1.
Claim 2
Dependent Claim
123 words
A process for separating an organic component from a non-body liquid medium which comprises contacting the liquid containing the organic component to be separated with particles of a partially pyrolyzed macroporous synthetic polymer produced by the controlled thermal degradation of a macroporous synthetic polymer containing a carbon-fixing moiety and derived from one or more ethylenically unsaturated monomers, or monomers which are condensed to yield macroporous polymers, or mixtures thereof, which partially pyrolyzed macroporous synthetic polymer contains: (a) at least 85% by weight of carbon, (b) multimodal pore distribution with macropores ranging in size from about 50 A to about 100,000 A in average critical dimension and (c) a carbon to hydrogen atom ratio of between about 1.5 : 1 and 20 : 1.
Claim 3
Dependent Claim
15 words
A process as claimed in claim 1 wherein the organic component contains an aromatic molecule.
Claim 4
Dependent Claim
14 words
A process as claimed in claim 1 wherein the organic component is a phenol.
Claim 5
Dependent Claim
14 words
A process as claimed in claim 3 wherein the medium is a sugar-containing liquid.
Claim 6
Dependent Claim
15 words
A process as claimed in claim 1 wherein the organic component is a color body.
Claim 7
Dependent Claim
13 words
A process as claimed in claim 1 wherein the liquid medium is aqueous.
Claim 8
Dependent Claim
13 words
A process as claimed in claim 1 wherein the organic component is phenol.
Claim 9
Dependent Claim
13 words
A process as claimed in claim 1 wherein the organic component is hexane.
Claim 10
Dependent Claim
13 words
A process as claimed in claim 1 wherein the organic component is chloroform.
Claim 11
Dependent Claim
12 words
A process as claimed in claim 1 wherein the medium is non-aqueous.
Claim 12
Dependent Claim
33 words
A process as claimed in claim 1 wherein the partially pyrolyzed macroporous synthetic polymer contains pores of molecular seive size of about 2 - 10 A as well as macropores of larger sizes.
References Cited (Backward Citations)
US3625886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |