Patent ID: 9511340
Filing Date: 2016-12-06
CPC Classification: B01F,B01J,C01F,C01P

Claim Text:
1. An aqueous calco-magnesian suspension comprising solid particles fitting the general formula a Ca(OH) 2 .b Mg(OH) 2 .c MgO.d I in an aqueous phase at a concentration greater than or equal to 200 g/kg, wherein a, b and c represent mass fractions, the sum of which has a value from 90 to 100%, and a is greater than or equal to 90% by weight, the sum of b and c is higher than 0, and d has a value from 0 to 10% as a mass fraction, I representing impurities, and an additive which is simultaneously a viscosity reducer and a viscosity increase moderator, characterized in that said additive is a phosphonate or a phosphonic acid, selected from the group consisting of aminoalkylene polyphosphonic acids, wherein the alkylene radical contains from 1 to 20 carbon atoms, of hydroxyalkylidene polyphosphonic acids, wherein the alkylidene radical contains from 2 to 50 carbon atoms, phosphono-alkanepolycarboxylic acids, wherein the alkane group contains from 3 to 12 carbon atoms and wherein the molar ratio of the alkylphosphonic acid radical to the carboxylic acid radical is in the range from 1:2 to 1:4, derivatives thereof and mixtures thereof, said suspension having a viscosity of less than or equal to 1,500 mPa·s after at least 2 weeks of storage.