Silicone Defoamer Agent HY8201

Similar to TSA750S

Silicone Defoamer HY8201 is defoamer with high viscosity, and it can used to eleminate small bubbles. It is usually applied in non-solvent system. It has excellent foam inhibiting and defoaming property.

Product Details

Chemical information

Component:Polysiloxane containing the Hydrophobic particles

Item Standard
Appearance Half transparent to cloudy liquid
Non-volatile content >97%
Viscosity 800-1500mpa.s


Defoamer HY8201 is silicone defoamer with good function in different industrial application and is superior in foam inhibiting and defoaming in coating. It is a type of defoamer with good durability


It can be applied in chemcical industry such as screen printing ink, UV ink, and epoxy floor coating, etc. It can be applied in unsaturated polyester system as well as in PU potting adhesive

Using method 

Dosage: 0.01 -1.00% of the total paint formulations. When it is added before grinding or stirring, it can the best effect on form inhibiting. It can be also added after the process with even stirring. It is necessary to make an application test to test the compatibility. it has high active content,it can be dissolved to 10%  with aromatic solvent before added into the formulation. And it is also suggested to be used up immediately after dilution to avoid the deposit of hydrophobic particles. And it is thixotropic and its viscosity is apt to increase under the low temperature or after long time laying. This is a normal phenomenon and is suggested to stir evenly before using.