Foam insulation and process for producing the same

A self-supporting insulating foam composition comprising:

• (a) a foamable first component comprising polyvinyl alcohol, a first dispersant and water, in combination with air, and
• (b) a cementitious second component comprising an aqueous composition or suspension of magnesium oxide and barium metabaorate, and a second dispersant.

A self-supporting insulating foam composition comprising:

• (a) a foamable first component comprising from 15.5 to 21.2 weight percent of polyvinyl alcohol, from 33.9 to 38.8 weight percent of water, and from 0.3 to 1.7 weight percent of a sodium salt of a carboxylated poyelectrolyte, in combination with air;
• and
• (b) a cementitious second component comprising from 7.7 to 15.3 weight percent of at least one cementitious material selected from the group consisting of magnesium oxide, Portland cement, hydraulic cement, aluminous cement, gypsum and gypsum cement, from 0.6 to 1.7 weight percent of barium metaborate, from 25.4 to 36.2 weight percent of water, and from 0.6 to 0.9 weight percent of a sodium salt of a carboxylated polyelectrolyte.

A self-supporting insulating foam composition, comprising:

• (a) a foamable first component comprising an aqueous solution of polyvinyl alcohol and calcium chloride, in combination with air;
• and
• (b) a cementitious second component comprising an aqueous mixture of at least one cementitious material selected from the group consisting of magnesium oxide, Portland cement, hydraulic cement, aluminous cement, gypsum and gypsum cement, a dispersant and sodium metaborate.

A self-supporting insulating foam composition, comprising:

• (a) a foamable first component comprising from 4.32 to 30.42 weight percent of polyvinyl alcohol, from 1.17 to 7.51 weight percent of calcium chloride, 0.20 to 7.34 weight percent of precipitated calcium carbonate, from 1.58 to 10.95 weight percent of 1,3 butylene glycol or a polybutene polymer and from 9.78 to 34.04 weight percent of water, in combination with air;
• and
• (b) a cementitious second component comprising from 13.54 to 49.47 weight percent of at least one cementitious material selected from the group consisting of magnesium oxide, Portland cement, hydraulic cement, aluminous cement, gypsum and gypsum cement, from 0.20 to 5.61 weight percent of precipitated calcium carbonate, from 1.94 to 8.53 weight percent of sodium metaborate, from 0.78 to 5.69 weight percent of glyoxal, from 0.39 to 3.37 weight percent of .epsilon.-caprolactam, from 0.19 to 3.81 weight percent of a polybutene polymer, from 0.39 to 4.74 weight percent of a modified lignosulfonate binder and from 8.64 to 38.02 weight percent of water.

A self-supporting insulating foam composition, comprising:

• (a) a foamable first component comprising from 2.56 to 27.21 weight percent of polyvinyl alcohol, from 1.30 to 10.28 weight percent of calcium chloride, from 0.18 to 4.90 weight percent of precipitated calcium carbonate and from 11.97 to 36.76 weight percent of water, in combination with air;
• and
• (b) a cementitious second component comprising from 12.10 to 40.82 weight percent of at least one cementitious material selected from the group consisting of magnesium oxide, Portland cement, hydraulic cement, aluminous cement, gypsum and gypsum cement, from 3.79 to 18.32 weight percent of precipitated calcium carbonate, from 1.46 to 6.61 weight percent of sodium metaborate, from 0.37 to 5.69 weight percent of glyoxal, from 0.18 to 4.90 weight percent of .epsilon.-caprolactam, from 0.18 to 1.69 weight percent of a polybutene polymer, from 0.37 to 4.92 weight percent of a modified lignosulfonate binder, from 0.37 to 4.92 weight percent of urea and from 9.52 to 34.97 weight percent of water.

A self-supporting insulating foam composition comprising:

• (a) a foamable first component comprising from 0.34 to 2.03 weight percent of a sodium salt of a carboxylated polyelectrolyte, from 0.68 to 3.36 weight percent of magnesium sulfate, from 0.34 to 3.97 weight percent of sodium metaborate, from 0.34 to 2.68 weight percent of a modified lignosulfonate binder and from 15.09 to 39.77 weight percent of water in combination with air;
• and
• (b) a cementitious second component comprising from 11.76 to 37.63 weight percent of at least one cementitious material selected from the group consisting of magnesium oxide, Portland cement, hydraulic cement, aluminous cement, gypsum and gypsum cement, from 11.76 to 37.63 weight percent of polyvinyl alcohol, from 0.35 to 4.61 weight percent of a modified lignosulfonate binder and from 14.55 to 36.14 weight percent of water.