C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/14 (2006.01) C04B 24/22 (2006.01) C04B 24/26 (2006.01) C04B 24/36 (2006.01) C04B 40/00 (2006.01)
Patent
CA 2443869
Aqueous formulation for enhancing flowability and setting properties of gypsum, slurries, comprising wax, polyvinylalcohol and a sulphonated melamine polycondensate are used for imparting water repellency to gypsum wall boards.
La présente invention concerne des formulations aqueuses servant à améliorer l'aptitude à l'écoulement et les propriétés de solidification de pâtes de plâtre, et comprenant de la cire, du polyvinyl alcool et un polycondensat de mélamine sulfonée, lesdites formulations étant utilisées pour conférer un caractère hydrofuge à des panneaux de plâtre.
Blake Cassels & Graydon Llp
Walker Industries Holdings Limited
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