US4136050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust suppression method and composition
Assignee: Veolia WTS USA Inc
•
Filing: 1977-02-16
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Granted: 1979-01-23
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Expires: 1997-02-16
Abstract
Abstract The dissemination of fugitive dust particles into the atmosphere is reduced by treating the particles with an aqueous solution of octylphenoxy polyethoxy ethanol and copolymer of ethylene oxide and propylene oxide.
Inventors
- 👤 Gary A. Brehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:00
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/22; C09; C09K; C09K3/00; C09K3/22
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
121 words
A method for enhancing the reduction of the dissemination of fugitive dust particles into the atmosphere comprising: treating the dust particles with an effective amount for the purpose of an aqueous solution of octylphenoxy polyethoxy ethanol and copolymer of ethylene oxide and propylene oxide, wherein the weight ratio of the ethanol compound to the copolymer is from about 5/95 to 95/5, wherein the copolymer has a molecular weight of from about 1000 to 16,000 and an ethylene oxide content of from about 10% to 80%, wherein the ethanol compound has from about 5 to 40 moles of ethylene oxide, and wherein the total concentration of the ethanol compound and the copolymer in the aqueous solution is from about 0.005% to 6%.
Claim 2
Independent Claim
121 words
A method for enhancing the reduction of the dissemination of fugitive dust particles into the atmosphere comprising: treating the dust particles with an effective amount for the purpose of an aqueous solution of octylphenoxy polyethoxy ethanol and copolymer of ethylene oxide and propylene oxide, wherein the weight ratio of the ethanol compound to the copolymer is from about 5/95 to 95/5, wherein the copolymer has a molecular weight of from about 1000 to 16,000 and an ethylene oxide content of from about 10% to 80%, wherein the ethanol compound has from about 5 to 40 moles of ethylene oxide, and wherein the total concentration of the ethanol compound and the copolymer in the aqueous solution is from about 0.005% to 6%.
Claim 3
Dependent Claim
12 words
The method of claim 1, wherein the treatment is applied by spraying.
Claim 4
Dependent Claim
22 words
The method of claim 2, wherein the treatment also consists essentially of an effective amount for the purpose of a solution stabilizer.
Claim 5
Dependent Claim
11 words
The method of claim 3, wherein the stabilizer is ethylene glycol.
Claim 6
Dependent Claim
17 words
The method of claim 2, wherein the fugitive dust particles are discharged from a basic oxygen furnace.
Claim 7
Dependent Claim
17 words
The method of claim 4, wherein the fugitive dust particles are discharged from a basic oxygen furnace.
Claim 8
Dependent Claim
13 words
The method of claim 2, wherein the fugitive dust particles are sinter dust.
Claim 9
Dependent Claim
14 words
The method of claim 4, wherein the fugitive dust particles are sinter dust particles.
Claim 10
Dependent Claim
18 words
The method of claim 1, wherein the copolymer has a molecular weight of from about 1950 to 13,300.
Claim 11
Dependent Claim
18 words
The method of claim 2, wherein the copolymer has a molecular weight of from about 1950 to 13,300.
Claim 12
Dependent Claim
18 words
The method of claim 5, wherein the copolymer has a molecular weight of from about 1950 to 13,300.
Claim 13
Dependent Claim
18 words
The method of claim 7, wherein the copolymer has a molecular weight of from about 1950 to 13,300.
Claim 14
Dependent Claim
17 words
The method of claim 1, wherein the treatment is applied by spraying it onto airborne dust particles.
Claim 15
Dependent Claim
107 words
A composition for enhancement of the reduction of the dissemination of fugitive dust into the atmosphere comprising an aqueous solution of: octylphenoxy polyethoxy ethanol, and copolymer of ethylene oxide and propylene oxide, wherein the total concentration of the ethanol compound and the copolymer in the aqueous solution is from about 0.005% to 6%, the copolymer has a molecular weight of from about 1000 to 16,000 and an ethylene oxide content of from about 10% to 80%, the ethanol compound has from about 5 to 40 moles of ethylene oxide, and wherein the weight ratio of the ethanol compound to the copolymer is from about 5/95 to 95/5.
Claim 16
Dependent Claim
107 words
A composition for enhancement of the reduction of the dissemination of fugitive dust into the atmosphere comprising an aqueous solution of: octylphenoxy polyethoxy ethanol, and copolymer of ethylene oxide and propylene oxide, wherein the total concentration of the ethanol compound and the copolymer in the aqueous solution is from about 0.005% to 6%, the copolymer has a molecular weight of from about 1000 to 16,000 and an ethylene oxide content of from about 10% to 80%, the ethanol compound has from about 5 to 40 moles of ethylene oxide, and wherein the weight ratio of the ethanol compound to the copolymer is from about 5/95 to 95/5.
Claim 17
Dependent Claim
26 words
The composition of claim 14, wherein the total concentration of the ethanol compound and the copolymer in the aqueous solution is from about 0.05 to 2%.
Claim 18
Dependent Claim
17 words
The composition of claim 14, further comprising an effective amount for the purpose of a solution stabilizer.
Claim 19
Dependent Claim
13 words
The composition of claim 16, wherein the stabilizer is a lower alkylene glycol.
Claim 20
Dependent Claim
11 words
The composition of claim 17, wherein the stabilizer is ethylene glycol.
Claim 21
Dependent Claim
35 words
The composition of claim 18, wherein the ethanol compound comprises 15% of the composition, the copolymer comprises 5% of the composition, the ethylene glycol comprises 3% of the composition, and the water comprises 77% thereof.
Claim 22
Dependent Claim
18 words
The composition of claim 14, wherein the copolymer has a molecular weight of from about 1950 to 13,300.
Claim 23
Dependent Claim
110 words
A composition for enhancement of the reduction of the dissemination of fugitive dust into the atmosphere consisting of an aqueous solution of: octylphenoxy polyethoxy ethanol, copolymer of ethylene oxide and propylene oxide, and solution stabilizer, wherein the weight ratio of the ethanol compound to the copolymer is from about 5/95 to 95/5, the copolymer has a molecular weight of from about 1000 to 16,000 and an ethylene oxide content of from about 10% to 80%, the ethanol compound has from about 5 to 40 moles of ethylene oxide, and wherein the total concentration of the ethanol compound and the copolymer in the aqueous solution is from about 0.005% to 6%.
Claim 24
Dependent Claim
110 words
A composition for enhancement of the reduction of the dissemination of fugitive dust into the atmosphere consisting of an aqueous solution of: octylphenoxy polyethoxy ethanol, copolymer of ethylene oxide and propylene oxide, and solution stabilizer, wherein the weight ratio of the ethanol compound to the copolymer is from about 5/95 to 95/5, the copolymer has a molecular weight of from about 1000 to 16,000 and an ethylene oxide content of from about 10% to 80%, the ethanol compound has from about 5 to 40 moles of ethylene oxide, and wherein the total concentration of the ethanol compound and the copolymer in the aqueous solution is from about 0.005% to 6%.
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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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |