Method for preparing a foam control composition in a granular or a powder form

A method for preparing a foam control composition X in a granular or a powder form, said process comprising the steps of:

• a) providing an aqueous dispersion, an aqueous solution or an aqueous concentrate in a liquid form comprising at least one water-soluble or water-dispersible organic polymer A bearing polyacid groups or polyamino groups which is partially salified, or fully salified;
• b) mixing said aqueous dispersion, said aqueous solution or said aqueous concentrate comprising said water-soluble or water-dispersible organic polymer A with a foam control agent B which is provided either as a liquid concentrate, as an aqueous dispersion or as an emulsion to form a liquid mixture, and wherein said components are added so that the water-soluble or water-dispersible organic polymer A to foam control agent B weight percent ratio is from 99.9:0.1 to 55:45, and
• c) drying the resulting liquid mixture to recover the granular or powder foam control composition X comprising the polymer A and the foam control agent B wherein the water-soluble or water-dispersible organic polymer A to foam control agent B weight percent ratio is from 99.9:0.1 to 55:45,
• wherein the polymer A is selected from the group consisting of lignosulfonate salts, copolymers of acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid in their corresponding partially or fully salified forms, copolymers of acrylic acid and styrene sulfonate in their corresponding partially or fully salified forms, and mixtures thereof.