Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1983-12-28
1985-12-10
Lusignan, Michael R.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
156 39, 156 42, 427215, 427242, 428406, 501 36, 501123, B05D 312, B05D 700, B32B 516, B32B 900
Patent
active
045579733
ABSTRACT:
Blown mineral wool fibers are introduced into slurries (such as gypsum board core formulations and steel column fireproofing plaster formulations) by first blending and coating the blown mineral wool with a powdered calcium sulfate to produce a light, open nodulated effect. When mixed into aqueous calcined gypsum slurries, the nodules open up, thoroughly dispersing the mineral wool--calcium sulfate blend in the aqueous slurry and contributing fire resistant properties to the set gypsum product.
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Didrick Robert M.
Lusignan Michael R.
Roberts Kenneth E.
Robinson Robert H.
United States Gypsum Company
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