C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/14 (2006.01) C04B 24/38 (2006.01) C04B 24/42 (2006.01)
Patent
CA 2643727
The invention relates to a method of imparting water repellency to a gypsum-based product formed from a plaster-based composition, which comprises adding to the said composition at least one compound comprising a polysiloxane and at least one compound comprising a pregelled starch. The invention likewise relates to a hydrophobicized, plaster-based composition comprising a polysiloxane and at least one compound comprising a pregelled starch, and also to its uses.
L'invention concerne un procédé d'hydrofugation d'un produit à base de gypse formé à partir d'une composition à base de plâtre, dans lequel on ajoute à ladite composition au moins un composé comprenant un polysiloxane et au moins un composé comprenant un amidon prégélifié. L'invention concerne également une composition hydrofugée à base de plâtre comprenant un polysiloxane et au moins un composé comprenant un amidon prégélifié, ainsi que ses utilisations.
Bpb Limited
Bpb Plc
Smart & Biggar
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