Abstract: Described is a method for preparation of stable fatty alcohol emulsion, wherein, fatty acid esters are introduced into an antifoaming agent emulsion system, and an anionic surfactant is added in the late stage of emulsification process in order to further improve the stability of the emulsion. The anionic surfactant is absorbed to the surface of fatty alcohol particles to make the fatty alcohol emulsion more stable under the action of ionic mutual repulsion. The prepared fatty alcohol emulsion has favorable foam elimination and suppression performance in the paper making procedure, and is stable during storage.

Abstract: A process for preparing a particle defoamer. The particle defoamer of 55%-75% of a carrier, 15%-35% of a silicone emulsion, 3%-10% of a texturing agent and 2%-10% of a solvent, based on the total weight of the particle defoamer; the process for preparing the particle defoamer is: (1)first adding a carrier A1 into a mixer, and then adding thereto a silicone emulsion B1, and stirring uniformly; (2)adding a carrier component A2 to the mixture obtained in (1), and stirring uniformly; (3)adding a silicone emulsion B2 to the mixture obtained in (2), and, after uniformly stirring, adding the solvent thereto and stirring uniformly; and (4)pelleting and drying by baking the mixture obtained in(3), so as to produce the product.

Abstract: A process for preparing a particle defoamer. The particle defoamer of 55%-75% of a carrier, 15%-35% of a silicone emulsion, 3%-10% of a texturing agent and 2%-10% of a solvent, based on the total weight of the particle defoamer; the process for preparing the particle defoamer is: (1)first adding a carrier A1 into a mixer, and then adding thereto a silicone emulsion B1, and stirring uniformly; (2)adding a carrier component A2 to the mixture obtained in (1), and stirring uniformly; (3)adding a silicone emulsion B2 to the mixture obtained in (2), and, after uniformly stirring, adding the solvent thereto and stirring uniformly; and (4)pelleting and drying by baking the mixture obtained in(3), so as to produce the product.