A layer of coating bonded to a substrate is encapsulated to prevent portions of the layer from becoming detached and randomly distributed. This is accomplished by applying a first layer of an adhesive to the exposed surface of the layer to be encapsulated. A second layer composed of a fibrous material is placed in contact with the first layer of adhesive and then an additional layer of adhesive is applied by a suitable technique such as brushing or coating. The additional layer of adhesive penetrates the fibrous material forming a stratified layer composed of an outer layer primarily of the adhesive, an intermediate layer composed primarily of a mixture of adhesive and fibrous material and an inner layer including the exposed surface layer and portions of the adhesive. The method is useful for encapsulating potentially hazardous materials such as lead based paints and asbestos.
A method for applying a high moisture permeability floor covering material to a concrete surface and product thereof. The method comprises the steps of first applying a layer of inert fibers to the concrete surface. To the fiber layer is applied an aqueous acrylate polymer emulsion to form localized bonding penetrations of the emulsion through the layer of fibers to the concrete surface and to form a continuous coating of emulsion on the upper surface of the layer of fibers. The coating is applied so that the coated fiber layer has interconnected moisture transmission passageways communicating with the concrete surface and extending throughout the fiber layer for redistributive diffusion under the continuous coating of moisture vapor from high emission surfaces of the concrete to lower emission surfaces of the concrete. A further layer of high viscosity aqueous acrylate polymer emulsion is applied to said continuous coating and set. A floor covering adhesive and floor covering sheet or tiles can then be applied to the set emulsion surface.
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 phosphoric acid, and from about 0.1 to about 4% by weight of a source of fluoride ions. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed.
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, optionally a source of fluoride ions, and a corrosion inhibiting amount of thiourea, a lower alkylthiourea, a C.sub.8 -C.sub.15 alkylpyridinium halide or mixtures thereof. A method of transforming an asbestos-containing building material, while part of a building structure, into a non-asbestos material by using the present composition also is disclosed.
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 inorganic acid, and from about 0.1 to about 4% by weight of a hexafluorosilicate of ammonia, an alkali metal or an alkaline earth metal. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed.
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 inorganic acid, and from about 0.1 to about 4% by weight of a tetrafluoroborate of ammonia, an alkali metal or an alkaline earth metal. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed.
