B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 13/00 (2006.01) B32B 37/00 (2006.01)
Patent
CA 2607884
The invention generally provides gypsum-containing slurries including stucco, trimetaphosphate salt, and naphthalenesulfonate dispersant, wherein the trimetaphosphate salt is present in an amount of at least about 0.12% by weight based on the weight of stucco. Other slurry additives can include accelerators, binders, starch, and paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, gypsum wallboard, and a method of making gypsum wallboard.
L'invention concerne des suspensions épaisses contenant du gypse, y compris du stuc, du sel de trimétaphosphate et un agent de dispersion à base de naphtalène sulfonate, les suspensions épaisses contenant au moins 0,12 % en poids environ de sel de trimétaphosphate sur la base du poids de stuc. D'autres additifs utilisés peuvent comprendre des accélérateurs, des liants, de l'amidon, ainsi que de la fibre à papier, de la fibre de verre et d'autres ingrédients connus. L'invention concerne également des produits contenant du gypse, obtenus à partir de ces suspensions épaisses, tels que des panneaux de gypse, par exemple, ainsi qu'un procédé destiné à la fabrication de panneaux de gypse.
Jones Frederick T.
Liu Qingxia
Lynn Michael R.
Shake Michael P.
Song Weixin D.
Company United States Gypsum
Moffat & Co.
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