Cement-based plasters using water rentention agents prepared...

Details Cement-based plasters using water rentention agents prepared... Cement-based plasters using water rentention agents prepared...

C - Chemistry, Metallurgy

04

B

C04B 24/38 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2562439

A mixture composition of a cellulose ether made from raw cotton linters and at least one additive is used in a dry cement based plaster (or render) composition wherein the amount of the cellulose ether in the render composition is significantly reduced. When this render composition is mixed with water and applied to a substrate, the water retention and thickening and/or sag resistance of the wet plaster are comparable or improved as compared to when using conventional similar cellulose ethers.

L'invention concerne une composition de mélange d'un éther de cellulose fabriquée dans des duvets de coton brut et au moins un additif utilisé dans une composition pour plâtre de ciment sec (ou support). La quantité d'éther de cellulose dans la composition support est réduite de manière significative. Lorsque la composition support est mélangée avec de l'eau et appliqué à un substrat, la rétention d'eau et l'épaisseur et/ou la résistance à la courbure du plâtre humide sont comparables ou améliorées par rapport à l'utilisation d'éthers de cellulose classique similaires.

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