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US 4,136,050 AGranted
Dust suppression method and composition
AssigneeBetz Laboratories, Inc.
InventorGary A. Brehm
Life of this patent
Estimating the term…
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.
Claims21
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%.
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.
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%.
Dependencies are inferred from the claim text.