METHOD FOR PREPARING AN AQUEOUS FORMULATION CONTAINING AN ACRYLIC COMB POLYMER SOLUTION AND AN ACRYLIC THICKENING EMULSION, FORMULATION THUS OBTAINED AND USE THEREOF IN PAPER COATING

摘要

The invention relates to a method for preparing a composition, characterised in that it comprises the steps of: a) preparing an aqueous solution of at least one comb polymer of (meth)acrylic acid having an alkoxy and/or hydroxy polyalkylene glycol function grafted thereon; b) preparing an aqueous emulsion of at least one acrylic thickener; c) mixing the aqueous solution of step a) and the aqueous emulsion of step b) with the optional addition of water; and in that it comprises partially neutralising the comb polymer during step a) and/or step c) in order to obtain a mixture having a pH between 5.5 and 6.8, preferably between 5.8 and 6.3. The invention also relates to the product thus obtained and to the use thereof in a paper coating slip as a thickening agent for said slip and/or as a water retention agent for said slip and/or as an agent for improving the gloss and/or the optical azuration of the paper coated with said slip.