Mixtures and emulsions to reduce energy in gypsum wallboard...

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 28/14 (2006.01) B28B 5/00 (2006.01)

Patent

CA 2750637

Provided herein are mixtures, emulsions and other additives for use in manufacturing gypsum wallboard. The mixtures and emulsions may be wax-based emulsions or wax- free mixtures or emulsions, with wax-based emulsions including water; at least one wax, a dispersant which may include sulfur or a sulfur-containing group, and a particular wetting agent or surfactant. Mixtures may also be prepared including water, a dispersant, and a particular wetting agent or surfactant. Gypsum slurries may be prepared using such emulsions and mixtures.

La présente invention concerne des mélanges, des émulsions et d'autres additifs devant être utilisés dans la fabrication d'un panneau de revêtement en gypse. Les mélanges et les émulsions peuvent être des émulsions à base de cire ou des mélanges et des émulsions exempts de cire, les émulsions à base de cire comprenant de l'eau, au moins une cire, un dispersant pouvant comprendre un groupe soufre ou contenant du soufre, et un agent mouillant ou un agent tensioactif particulier. Les mélanges peuvent également être préparés avec de l'eau, un dispersant et un agent mouillant ou un agent tensioactif particulier. Des pâtes de plâtre peuvent être préparées à l'aide de telles émulsions et de tels mélanges.

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