Surfactant foams and their use
AssigneeE. I. Du Pont de Nemours and Company
InventorsDong M. Chay, David J. Haack
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Abstract
Aqueous foam compositions comprising water and a mixture of ammonium lauryl sulfate, methyl polyoxyethylene cocoamine chloride, dimethyl cocoamine oxide and polyvinyl alcohol are used to suppress the formation of fumes from fumable materials by covering the material with said compositions in the form of foam, thereby causing the material to react with the water to prevent fume release.
Claims15
A method of preventing fumes from a fumable material that has been exposed to the atmosphere from escaping in the atmosphere comprising covering the fumable material with a foam prepared from a composition which comprises an aqueous mixture of ammonium lauryl sulfate, methyl polyoxyethylene cocoamine chloride, dimethyl cocoamine oxide and polyvinyl alcohol in a proportion in parts by weight, 100% basis, of 7-35, 25-55, 20-35 and 2.5-7.5, respectively with enough water and air to give foam density of from 0.005-0.130 g/cc.
A foamable composition for preventing fuming of fumable materials when exposed to the atmosphere comprising an aqueous mixture of ammonium lauryl sulfate, methyl polyoxyethylene cocoamine chloride, dimethyl cocoamine oxide and polyvinyl alcohol in a proportion in parts by weight of 7-35, 25-55, 20-35 and 2.5-7.5, respectively.
Dependencies are inferred from the claim text.