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AssigneesCiments Francais, C.T.G. (Centre Technique Du Groupe Italcementi)
InventorsFaber FABBRIS, Soraya MEHALEBI
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A liquid aqueous suspension of polysaccharide, contains a mass concentration of at least one polysaccharide of between 15 and 35% in the form of partially hydrated particles dispersed in an aqueous solution of a strong base salt, excluding ammonium salts, with an ionic strength of between 1.25 mol/L and 15 mol/L, has a pH greater than 9 and contains at least one non-phyllitic crystalline mineral powder, referred to hereafter as filler, which is chemically inert in the aqueous suspension and which has a grain size of between 0.1 and 100 micrometres and an attapulgite in micronized form, the aqueous suspension being stable at least in a temperature range from 5 to 30 30° C. The suspension is suitable for use as an agent for thickening cementitious compositions.
A liquid aqueous polysaccharide suspension including a concentration by weight of at least one polysaccharide of between 15 and 35% in the form of partially hydrated particles dispersed in an aqueous solution of a strong base salt, with the exception of ammonium salts, having an ionic strength of between 1.25 mol/l and 15 mol/l, exhibiting a pH of greater than 9, and including an attapulgite in the micronized form and at least one nonphyllitic mineral powder, hereinafter referred to as filler, chemically inert in said aqueous suspension, with a particle size of between 0.1 and 100 micrometers, conferring on said aqueous suspension a stability at least in a temperature range extending from 5 to 30° C.
Dependencies are inferred from the claim text.