"PASTA FLUIDA COM ESPUMA E PAINEL DE CONSTRUÇÃO FABRICADO DA MESMA"

A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer and a polycarboxylate dispersant. In some embodiments of the invention, the defoamer is combined with the dis...

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Bibliographic Details
Main Authors RUNHAI LU, DAVID R. BLACKBURN, SHARON L. TRACY, BRUCE LYNN PETERSEN, JOHN L. FALL, MICHAEL P. SHAKE, ALFRED LI, JAMES R. WITTBOLD, QINGXIA LIU, CHRIS LEE
Format Patent
LanguagePortuguese
Published 03.02.2015
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer and a polycarboxylate dispersant. In some embodiments of the invention, the defoamer is combined with the dispersant prior to being added to the gypsum slurry. The defoamer and dispersant can be added as a physical mixture, wherein the defoamer is attached onto the dispersant polymer, or a combination thereof. In some embodiments, a gypsum building panel is made from the gypsum slurry.
Bibliography:Application Number: BR2008PI14146