Aluminum hydroxide-based spray-on insulating material for...

Details Aluminum hydroxide-based spray-on insulating material for... Aluminum hydroxide-based spray-on insulating material for...

C - Chemistry, Metallurgy

09

K

31/67

C09K 3/00 (2006.01)

Patent

CA 1156447

ABSTRACT OF THE DISCLOSURE The invention provides a novel aluminum hydroxide-based spray-on insulating material which is workable by blowing to form a layer on the ceiling or wall of a building effective for heat and sound insulation. The inventive material is prepared by first blending an organic fibrous material, e.g. reclaimed pulp from scrapped papers, with a gel-like amorphous aluminum hydroxide sludge, available in large quantities as a waste in the anodization treatment of aluminum articles, with adjustment of the pH of the mixture to weakly acidic whereby the organic fibers are entrammeled by the coagulated aluminum hydroxide and then a powdery aluminum hydroxide, which is prepared by drying and pulverizing the gel-like aluminum hydroxide sludge, is admix- ed with the mixture followed by drying and disintegrating the blend into fluffs. The spray-on insulating material is worked by blowing as such or may be blown together with an adhesive so as to increase the mechanical stability of the insulating layer.

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