Rhone-poulenc Chimie

Rhone-poulenc Specialites Chimiques

Marie-Madeleine Besnard

Magali Knipper

Claire David

Jean-Luc Schuppiser

Michel Peignier

Fabrice Brenner

Mixed polysaccharide compositions, well adopted for flocculating/precipitating solid particulates from liquid dispersions thereof and for the shaping of insulating articles therefrom, comprise (i) at least one succinoglycan polysaccharide, the basic recurring structural unit of which comprising glucose, galactose and succinyl moieties, and (ii) at least one natural polysaccharide or derivative thereof.

Mixed polysaccharide precipitating agents and insulating articles shaped

Physically/mechanically improved insulating shaped articles such as panels or plates, adapted to withstand very elevated temperatures, comprise an inorganic fiber matrix, e.g., a matrix of ceramic fibers, such inorganic fiber matrix containing at least one inorganic filler material, e.g., a mineral wool and/or kaolin, and a consolidating of a binder therefor which comprises admixture of a xanthan gum and a cationic starch.

Insulating shaped articles comprising inorganic fibrous matrices and

Mixed polysaccharide compositions, well adopted for flocculating/precipitating solid particulates from liquid dispersions thereof and for the shaping of insulating articles therefrom, comprise (i) at least one polysaccharide prepared by microbial fermentation, the basic recurring structural unit of which comprising both glucose and rhamnose moieties, and (ii) at least one cationic natural polysaccharide or derivative thereof.

Suspensions of solid particulates in aqueous media, useful, e.g., as thickeners in a wide variety of foodstuff and industrial applications, are sedimentations stabilized by incorporating therein a stabilizing amount of xanthan/carob gum, optionally starch admixture.

Stable suspensions of solid particulates in aqueous media

Aqueous acid cleaning compositions well adapted, e.g., for the descaling of metallic face surfaces include (i) water, (ii) a carboxylic acid dissolved therein having a dissociation constant pK, at 25.degree. C., of at least 2, (iii) a stabilizing amount of at least one salt of an acid having a pK value of at least 2, and of a strong base, and (iv) a thickening amount of a polysaccharide.

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Antony, France

Marie-Madeleine Besnard