Gypsum wallboard, and method of making same

Details Gypsum wallboard, and method of making same Gypsum wallboard, and method of making same

C - Chemistry, Metallurgy

04

B

C04B 24/18 (2006.01) C04B 28/14 (2006.01) E04C 2/04 (2006.01)

Patent

CA 2341466

A method of preparation of gypsum wallboard, as well as a core composition suitable for use therein, are disclosed. The core composition includes a slurry of calcium sulfate hemihydrate (stucco), water, and calcium aluminum lignosulfonate and/or aluminum lignosulfonate.

L'invention concerne un procédé de préparation d'un panneau de plâtre et d'une composition de noyau destinée à être utilisée dans ce panneau. Cette composition comprend une suspension de semi-hydrate de sulfate de calcium (stuc), de l'eau et un lignosulfonate d'aluminium et de calcium et/ou un lignosulfonate d'aluminium.

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