Description
TEGO®Airex 902 W is a highly effective and compatible deaerator emulsion based on polyether siloxane technology. Outstandingly effective against micro- and macro-foam.
Key Benefits
universal use in waterborne formulations
optimum combination in micro- and macro-foam elimination
highly compatible
highly suitable for medium- to low-viscosity formulations
Wood coatings
General industrial coatings . Plastic coatings
Printing inks
| active matter content | 20% |
| appearance | white thixotropic liquid |
| chemical description | emulsion of a polyether siloxane copolymer, contains fumed silica |
| solvent | solvent-free |
For stability reasons emulsions May not be diluted by organic solvents.
As supplied calculated on total formulation : 0.1 - 3.0 %
Before use, mix briefly with low shear forces. . Addition to the coating as supplied.
Long term effectiveness of the product is dependent on the formulation and should be tested in individual formulations.
When stored defoamer bulk in an original unopened packaging between +4 and +40°c, the product has a shelf life of 24 months from the date of manufacture.
Keep away from freezing.
Q1: What is the primary function of TEGO 902w in coating and ink formulations?
A: TEGO 902w is a silicone-based surface additive designed to improve substrate wetting, reduce surface tension, and enhance leveling—particularly in waterborne systems where achieving uniform film formation can be challenging.
Q2: Is TEGO 902w compatible with high-solids or low-VOC formulations?
A: Yes, TEGO 902w is formulated for compatibility with modern low-VOC and high-solids systems, including acrylic, polyurethane, and hybrid dispersions. Its hydrophobic silicone structure helps maintain performance without compromising formulation stability.
Q3: How should TEGO 902w be incorporated into a formulation?
A: It is recommended to add TEGO 902w during the let-down stage, after pigments and thickeners have been dispersed, to ensure optimal distribution and avoid interference with rheology development or pigment stabilization.
Q4: Does TEGO 902w affect foam behavior in aqueous systems?
A: Unlike many defoamers, TEGO 902w is not intended for foam control; however, its surface activity may slightly influence foam stability depending on the system. For robust defoaming, a dedicated defoamer should be selected and evaluated separately.
Q5: Can TEGO 902w be used in food-contact coatings?
A: TEGO 902w is not pre-approved for direct food-contact applications. Formulators intending such use must conduct full regulatory assessment—including migration testing and compliance verification—based on applicable regional requirements and end-use conditions.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
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