Foam insulation and process and apparatus for producing the...

Details Foam insulation and process and apparatus for producing the... Foam insulation and process and apparatus for producing the...

C - Chemistry, Metallurgy

04

B

403/11, 261/48

C04B 38/10 (2006.01)

Patent

CA 1225669

- 22 - ABSTRACT An insulating foam and a process for producing insulating foam, wherein a foamable first component may be made of alkyl sulfate, half ester of maleic anhydride and acrylic resin in an aqueous solution is mechanically foamed with air, and to that foam is added an aqueous solution of magnesium oxide, dispersant, acrylic resin, perlite and/or precipitated calcium carbonate. To those components is added an aqueous solution of at least one of aluminum chloride, magnesium sulfate, magnesium chloride, zinc chloride, sulfamic acid, sodium silicate, zinc oxide, barium metaborate, vinyl alcohol, magnesium carbonate, calcium chloride and vinyl acetate. In another embodiment a polyvinyl alcohol and dispersant first portion is foamed with air and mixed with a second cementitious portion comprising magnesium oxide and barium metaborate. Such two or three portion composi- tions can be mixed in the mixing chamber of a foaming gun which immediately after foam-mixing injects the foamed mixture into a desired site, such as a building wall.

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