Conditioned colloidal silica post impregnant to prevent...

Details Conditioned colloidal silica post impregnant to prevent... Conditioned colloidal silica post impregnant to prevent...

C - Chemistry, Metallurgy

04

B

20/23, 261/38, 9

C04B 35/84 (2006.01) C04B 28/24 (2006.01)

Patent

CA 1129442

N24-49 CONDITIONED COLLOIDAL SILICA POST IMPREGNANT TO PREVENT BINDER MIGRATION Abstract of the Invention An inorganic refractory insulation article comprising randomly oriented refractory fibers re- tained by dried colloidal silica uniformly distributed throughout the article and containing from about 0.001 to about 1.5 percent by weight of the article of aluminum chlorhydrate. The invention further comprises the process for making the article by forming a fiber mat from a fiber slurry, impregnating the mat with a conditioned colloidal silica composition comprising colloidal silica, acid, aluminum chlorhydrate and water and drying the mat to form the article. -9-

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