SILFOAM^® SC 5260

Application

SILFOAM^® SC 5260 is based on high-molecular polysiloxanes. It shows a relatively low viscosity, excellent foam control performance and a stable efficiency over a long period in formulations rich in surfactants. Since it also possesses resistance to alkalis and acids, it may further be used in a wide range of applications in which pH is critical.

By virtue of its structure SILFOAM^® SC 5260 provides much better efficiency and persistency in pesticide formulations and surfactant concentrates and can therefore be used in smaller amounts than conventional silicone antifoam agents.

Apart from agricultural formulations, SILFOAM^® SC 5260 is useful in surfactant-containing systems whose efficiency is reduced by action of shearing and dispersion forces.

Due to its relatively low viscosity, SILFOAM^® SC 5260 is readily dispersible in aqueous surfactant formulations.

SILFOAM^® SC 5260 offers excellent stability and processability at temperatures far below 0°C (32 °F).

Processing

Although SILFOAM^® SC 5260 doesn’t disperse spontaneously in water, it can be easily incorporated into surfactant concentrates. The contained surfactants can help to stabilize the antifoam agent within the formulation.

SILFOAM^® SC 5260 can be dosed undiluted and is easily miscible with the foaming system by gentle to moderate stirring. The final formulation should be evaluated by storage tests for possible migration of the silicone components within the formulation in order to avoid negative effects on its uniformity and foam control. 

The typical dosage is in the range of 5 to 50 ppm referred to the final foaming formulation and is best determined by preliminary tests.

If SILFOAM^® SC 5260 is applied in the form of a dispersion, the degree of dilution should be as low as possible. Suitable dispersing agents include toluene, methyl ethyl ketone, acetone and 2-ethyl hexanol.