Non-ionic foam composition for treating asbestos-containing materials and method of using same
AssigneeW.R. Grace & Co.-Conn.
InventorLawrence Joseph Kindt
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Abstract
A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an acid component, at least about 0.1% by weight of a source of fluoride ions, and a stable foam forming amount of a foaming agent system composed of a non-ionic alkyl polyglycoside alone or with additional non-ionic foaming agents. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition in the form of a foam also disclosed.
Claims25
A method of treating a chrysotile-asbestos containing porous building material (ACM) installed on a substrate in a building, comprising:
- (a) providing a composition derived from admixing (i) water. (ii) at least about 30% by weight of an acid component comprising an inorganic acid. an inorganic acidic salt or mixtures thereof (iii) from about 0.1 to about 4% by weight of a source of fluoride ions and (iv) a stable foam generating amount of a foaming agent system comprising at least one non-ionic polyalkyglycoside represented by the formula;
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- wherein R represents a C8 to C16 alkyl group and x represents an integer of from 1 to 10 alone or further with a second non-ionic agent;
- (b) foaming the composition from step (a);
- (c) applying the resulting foamed composition to the ACM chrysotile asbestos-containing building material;
- (d) permitting the foamed composition to remain on and penetrate the building material and contact the chrysotile asbestos contained therein:
- (e) allowing said composition to remain in contact with the chrysotile asbestos for a sufficient period of time to reduce the amount of chrysotile asbestos contained in said building material to less than 1% by weight of the resultant material, and
- (f) permitting said resultant material to remain on the substrate of the building.
A method of treating a chrysotile asbestos-containing porous building material (ACM) installed on a substrate in a building. comprising:
- (a) providing an admixture composition derived by admixing (i) water. (ii) at least about 10 weight percent at least one hexafluorosilicate of tetrafluoroborate salt of ammonia. alkali metal, alkaline earth metal or mixtures of said salts. (iii) up to about 7 weight percent of an inorganic acid, an inorganic acid salt or mixtures thereof. and (iv) a stable foam generating amount of a foaming agent system comprising at least one non-ionic polyalkyglycoside represented by the formula;
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- wherein R represents a C8 to C16 alkyl group and x represents an integer of from 1 to 10 alone or further with a second non-ionic agent;
- (b) foaming the composition from step (a);
- (c) applying the resulting foamed composition to the ACM chrysotile asbestos-containing building material;
- (d) permitting the foamed composition to remain on and penetrate the building material and contact the chrysotile asbestos contained therein:
- (g) allowing said composition to remain in contact with the chrysotile asbestos for a sufficient period of time to reduce the amount of chrysotile asbestos contained in said building material to less than 1% by weight of the resultant material, and
- (h) permitting said resultant material to remain on the substrate of the building.
A composition for treating a chrysotile-asbestos containing porous building material (ACM) installed on a substrate in a building, comprising:
- (a) an admixture of (i) water. (ii) at least about 30% by weight of an acid component comprising an inorganic acid. an inorganic acidic salt or mixtures thereof. (iii) from about 0.1 to about 4% by weight of a source of fluoride ions and (iv) a stable foam generating amount of a foaming agent system comprising at least one non-ionic polyalkyglycoside represented by the formula;
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- wherein R represents a C8 to C16 alkyl group and x represents an integer of from 1 to 10 alone or further with a second non-ionic agent.
A composition for treating a chrysotile asbestos-containing porous building material (ACM) installed on a substrate in a building. comprising:
- (a) an admixture comprising (i) water. (ii) at least about 10 weight percent at least one hexafluorosilicate of tetrafluoroborate salt of ammonia. alkali metal, alkaline earth metal or mixtures of said salts. (iii) up to about 7 weight percent of an inorganic acid, an inorganic acid salt or mixtures thereof. and (iv) a stable foam generating amount of a foaming agent system comprising at least one non-ionic polyalkyglycoside represented by the formula;
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- wherein R represents a C8 to C16 alkyl group and x represents an integer of from 1 to 10 alone or further with a second non-ionic agent.
Dependencies are inferred from the claim text.