US4011175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for separating hydrocarbons from water
Assignee: Individual
•
Filing: 1974-08-15
•
Granted: 1977-03-08
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Expires: 1994-08-15
Abstract
Abstract A compound for separating organic liquids, particularly hydrocarbons from an organic liquid-water system including a loose mass of expanded perlite mixed with clays and a fibrous filler formed by demoisturizing an aqueous suspension of the compound and comminuting the demoisturized mixture. The compound is introduced into, or contacted by, the organic liquid-water system to selectively absorb the hydrocarbon whereupon the compound and the hydrocarbon absorbed therein are mechanically separated from the system.
Inventors
- 👤 Paul Preus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:20
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
oleophilic-hydrophobic composition for separating water immiscible organic liquids from water comprising a lighter than water demoisturized comminuted mass of a mixture of expanded perlite, asphalt and a fibrous filler, said loose mass having an average particle size with one dimension of at least about 1/8 inch in length, and said loose mass when introduced in a water-organic material system selectively absorbing the organic material therein for subsequent mechanical separation thereof with said composition.
Claim 2
Dependent Claim
73 words
oleophilic-hydrophobic composition for separating water immiscible organic liquids from water comprising a lighter than water demoisturized comminuted mass of a mixture of expanded perlite, asphalt and a fibrous filler, said loose mass having an average particle size with one dimension of at least about 1/8 inch in length, and said loose mass when introduced in a water-organic material system selectively absorbing the organic material therein for subsequent mechanical separation thereof with said composition.
Claim 3
Dependent Claim
15 words
The composition in accordance with claim 1 wherein said asphalt is coated on said perlite.
Claim 4
Dependent Claim
15 words
The composition in accordance with claim 1 wherein said composition further includes a clay constituent.
Claim 5
Dependent Claim
17 words
The composition in accordance with claim 1 wherein the fibers of said fibrous filler comprise organic fibers.
Claim 6
Dependent Claim
30 words
The composition in accordance with claim 3 wherein said constituents are in the following proportions by weight: Expanded perlite -- 60-80% Fibers -- 13-33% Clays -- 4-8% Asphalt -- 1-5%
Claim 7
Dependent Claim
85 words
An oleophilic-hydrophobic composition for separating water immiscible organic liquids from water produced by the steps of: forming an aqueous mix of expanded perlite, clays, asphalt, and fibrous material to produce a coherent member; removing the moisture from said member; comminuting the demoisturized member to produce a loose mass having an average fiber length of not less than about 1/8 inch whereby said mass, when introduced into an organic liquid-water system, selectively absorbs the organic liquid from the water for subsequent mechanical removal with said composition.
Claim 8
Dependent Claim
85 words
An oleophilic-hydrophobic composition for separating water immiscible organic liquids from water produced by the steps of: forming an aqueous mix of expanded perlite, clays, asphalt, and fibrous material to produce a coherent member; removing the moisture from said member; comminuting the demoisturized member to produce a loose mass having an average fiber length of not less than about 1/8 inch whereby said mass, when introduced into an organic liquid-water system, selectively absorbs the organic liquid from the water for subsequent mechanical removal with said composition.
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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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |