BYK-024 is a VOC-free silicone-containing defoamer manufactured by BYK-Chemie GmbH. It is designed for various applications in the coatings, printing inks, adhesives, and glass fiber sizings industries. Here are the key details provided in the datasheet:
Composition:
- BYK-024 consists of a mixture of foam-destroying polysiloxanes and hydrophobic solids in polyglycol.
Typical Properties:
- Density (20 °C): 1.01 g/ml
- VOC-free (< 1500 ppm)
Applications:
1. Printing Inks and Overprint Varnishes:
- Suitable for defoaming aqueous printing inks and overprint varnishes based on acrylate/polyurethane and polyurethane, including aqueous UV systems.
- Recommended dosage: 0.1-1% additive based upon the total formulation.
2. Coatings Industry:
- Recommended for defoaming high gloss emulsion systems based on acrylate/polyurethane and polyurethane in the pigment volume concentration range of 0-25.
- Effective in various application methods such as rolling, brushing, spraying, and pouring.
- Recommended dosage: 0.1-1% additive based upon the total formulation.
3. Adhesives:
- Suitable for defoaming aqueous emulsion adhesives.
- Recommended dosage: 0.05-1% additive based upon the total formulation.
4. Glass Fiber Sizings:
- Recommended for defoaming during the application of aqueous glass fiber sizings.
- Recommended dosage: 0.1-0.3% additive based on the total formulation.
Incorporation and Processing Instructions:
- The additive can be added at any time during production.
- For optimal results, the amount of defoamer used is often divided, with 2/3 added into the millbase and 1/3 into the let-down or finished product.
Overall, BYK-024 is a versatile defoamer that offers easy incorporation and effective defoaming properties across various aqueous systems used in these industries.
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