Improved gypsum-containing products containing...

Details Improved gypsum-containing products containing... Improved gypsum-containing products containing...

C - Chemistry, Metallurgy

04

B

C04B 11/00 (2006.01) B32B 13/00 (2006.01) C04B 28/08 (2006.01)

Patent

CA 2620176

The invention provides gypsum wallboard, made from gypsum-containing slurries having outstanding hydration rate characteristics comprising alpha-hemihydrate ground to a particular particle size distribution range and having a Blaine surface area in the range from about 3100 cm2/g to about 9000 cm2/g, alone or in combination with beta-hemihydrate.

L'invention porte sur une plaque de plâtre constituée de pâtes renfermant du plâtre possédant d'excellentes caractéristiques d'hydratation, et qui comprend de l'hémihydrate alpha broyé jusqu'à atteindre une distribution granulométrique particulière, et qui présente une surface spécifique de Blaine comprise entre environ 3100 cm2/g et environ 9000 cm2/g, seul ou en combinaison avec du hémihydrate bêta.

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