C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/14 (2006.01) C04B 24/26 (2006.01) C04B 24/32 (2006.01)
Patent
CA 2518704
A gypsum composition suitable for use in the manufacture of gypsum products is provided. The gypsum composition includes gypsum, water, and a solid dispersant comprising a supported acrylic/polyether comb-branched copolymer. A method of making a gypsum composition is also provided. The method includes mixing together, in any combination, gypsum, water, and a solid dispersant comprising a supported acrylic/polyether comb-branched copolymer.
L'invention concerne une composition de gypse convenant pour la fabrication de produits à base de gypse. Cette composition de gypse comprend du gypse, de l'eau et un dispersant solide comprenant un copolymère acrylique/polyéther ramifié en peigne sur support. L'invention concerne aussi un procédé de fabrication de la composition de gypse. Le procédé comporte les étapes consistant à mélanger selon une combinaison quelconque du gypse, de l'eau et un dispersant solide comprenant un copolymère acrylique/polyéther ramifié en peigne sur support.
Liotta Frank J. Jr.
Schwartz Steven A.
Coatex Sas
Lyondell Chemical Technology L.p.
Osler Hoskin & Harcourt Llp
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