YH-203 defoamer define coatings of use or non-silicone defoamer emulsion type YH-203 is 100% active ingredients. Due to its low viscosity liquid state, so that it is readily soluble in water. It not only can be used directly to produce foam system to be diluted with water and mild agitation used. YH203 current state or emulsion, can be used in a conventional process: the metering pump, dropping device and the like. YH203 has two effects: antifoam agents, defoaming agents. So it is commonly used in the formation of bubbles in the medium. It should be noted defoaming performance YH203 better than foam breaking performance. Because of its low surface tension, YH203 spread very rapidly in the liquid - gas interface, the system or the system of the cell wall surface suitable for forming foam. With YH203 diffusion, molecules and one surface of the foam component YH203 effect occurs, which can enter the cell wall component, so that the surface modifier molecules leaving the cell wall becomes weaker. Weakens the cell wall is irreversible, and defoaming action YH203 stability with time. This is valuable because many defoamers although they have all kinds of mechanism of action, but have lost during storage defoaming capabilities. Application Features (1) Due to YH203 has a very good water-dispersible, added to the coating formulation and after the appearance of the film uniformity no side effects, does not cause the appearance of the paint brush phenomenon affecting fish eye crater. (2) YH203 defoaming effect remain for a long time. Therefore, do not add new dosage. (3) YH203 effect is not affected by pH changes. YH203 in the range of pH 2 ~ 11 are maintained defoaming capability. (4) YH203 is not affected by the effects of temperature variations. Temperature defoaming ability but strengthened. (5) Because of its non-ionic and polar, YH203 can be used in most of the system, regardless of the polarity of the system. Physical and chemical characteristics Appearance Odour slight brown color liquid flow density 0.950 ± 0.005 Viscosity 15 cps excellent storage stability of the method according to Roche Miller, 0.4% 0 solution of anti-foaming ability T0 30 T1 10 YH203 usual amount in the amount of 0.15% to 0.5 between%, to get the best results, the optimum amount of YH203 depends on the other ingredients contained in the formulation. Therefore it is necessary to re-test to determine the dosage. Packing 25Kg plastic drum. Information contained in this document is true and reliable, which is helpful for users. Recommends that users carry out the necessary experiments to confirm that the product is applicable.