Conditioned colloidal silica post impregnant to prevent binder migration in the production of insulation articles comprising randomly oriented refractory fibers
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United States of America Patent
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Jun 1, 1982
Issued Date -
N/A
app pub date -
Dec 3, 1979
filing date -
Mar 29, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An inorganic refractory insulation article comprising randomly oriented refractory fibers retained 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.
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