Foam is a dispersion of a gas in a liquid. The occurrence of foam when producing and processing coatings, printing inks, plastic materials, but also in many other industrial processes, is usually not desired. Defoamers prevent and destroy the foam bubbles and enable an improved processing, a perfect surface and optimum product properties.
ASTRA offers defoamers which can be used in a variety of different applications. You can divide them into two main groups: silicone defoamers and non-silicone defoamers.
ASTRA DF NS series
Why Use Defoamers?
Defoamers are crucial additives that help in preventing and eliminating foam formation. By breaking down foam bubbles, defoamers enable smoother processing, achieving a perfect surface finish and maintaining the optimum quality of the final product.
Non-Silicone Defoamers: The Ideal Choice for Your Application
While silicone-based defoamers are widely used, there are situations where non-silicone defoamers are the preferred choice. Non-silicone defoamers provide effective foam control without the risk of silicone contamination, making them suitable for applications where silicone sensitivity is a concern.
ASTRA’s non-silicone defoamers are suitable for a diverse range of industries and processes, including but not limited to:
Applications:
•Coatings and Paints: Ensuring smooth application and a perfect surface finish.
•Printing Inks: Preventing foam formation during high-speed printing processes.
•Adhesives and Sealants: Maintaining the integrity and appearance of the final product.
•Plastics and Composites: Ensuring consistent quality during molding and extrusion processes.
Non sillicone defoamers
PRODUCT
ITEM CODE
ANALOGUE
SYSTEMS
ACTIVE PART
PRODUCT FEAUTURES
DOWNLOAD ТDS
ASTRA DF
107NS
AC-2000
O / RC
7%
Excellent compatibility, low shrinkage, suitable for medium and high polarity systems (UV-curable systems, epoxy, unsaturated polyesters). Has little effect on transparency.
ASTRA DF
207NS
O / RC
3%
Specially developed for UV curing systems, excellent compatibility, high defoaming efficiency, low tendency to form craters.
ASTRA DF
307NS
BYK-052; BYK A 555, BYK A 515, EFKA 2020, DC 3500
O / RC
3%
High efficiency. Suitable for high viscosity systems
ASTRA DF
407NS
BYK-390
O / RC
1%
High efficiency. Suitable for high viscosity systems
ASTRA DF
507NS
BYK-052; BYK A 555, BYK A 515, EFKA 2020, DC 3500
O
1%
Prevents foam formation during production and application. Does not adversely affect interlayer adhesion.
ASTRA DF
607NS
O
3%
Allows to avoid foam formation during paint and varnish production. Does not have a negative effect on interlayer adhesion. For 2K PU systems, thermosetting systems.
ASTRA DF
707NS
AC-300
O / RC
100%
Suitable for all organosoluble systems, high efficiency of defoaming. Suitable for thick paintwork and high-viscosity systems. For zinc primers, polyurethane, epoxy systems.
ASTRA DF
807NS
BYK-A515; BYK-054
O / RC
100%
Good compatibility with resins. Particularly suitable for epoxy systems and unsaturated polyester systems.
ASTRA DF
907NS
O / RC
50%
Suitable for all organosoluble systems, high efficiency of defoaming. Suitable for thick paintwork and high-viscosity systems. For zinc primers, polyurethane, epoxy systems.
ASTRA DF
1007NS
O / RC
100%
Specially developed for UV-curing systems, epoxy and polyester systems. Excellent compatibility, prevents foaming.
ASTRA DF
1107NS
Disparlon P-420
O / RC
100%
Specially developed for UV-curing systems, epoxy and polyester systems. Excellent compatibility, prevents foaming.
ASTRA DF
1207NS
BYK-055
RC
25%
Excellent compatibility, very low shrinkage tendency. Particularly suitable for systems of medium and high polarity (UV-curable systems). Low influence on film transparency.
ASTRA DF
1307NS
VERSION OF ASTRA-1207NS
O / RC
50%
Excellent compatibility, very low shrinkage tendency. Particularly suitable for systems of medium and high polarity (UV-curable systems). Low influence on film transparency.
ASTRA DF
1407NS
BYK-057，EFKA-2720, BYK A 501
O / RC
100%
Good compatibility. Particularly suitable for epoxy systems and unsaturated polyester systems.
ASTRA DF
1507NS
BYK-A 501; BYK-A 555; Version of ASTRA-1407NS
O / RC
100%
Good compatibility. Particularly suitable for epoxy systems and unsaturated polyester systems.
ASTRA DF
1607NS
O / RC
100%
High efficiency. Low tendency to form craters.
ASTRA DF
1707NS
BYK-1790
O / RC
20%
Strong antifoam with low cratering tendency. Suitable for coil coating systems, epoxy systems.
ASTRA DF
1807NS
BYK-1790
O / RC
100%
High efficiency. Low tendency to form craters. Particularly suitable for coil coating systems, epoxy and UV curing systems.
ASTRA DF
1907NS
Tego-920
O / RC
60%
Specially developed for radiation curing systems. Good compatibility, high efficiency. Does not affect the coating overcoating ability.
ASTRA DF
2007NS
Tego-920
O / RC
100%
Specially developed for radiation curing systems. Good compatibility, high efficiency. Does not affect the coating overcoating ability.
ASTRA DF
2107NS
AC-326F
O / RC
20%
Specially developed for UV-curing systems, epoxy and polyester systems. Excellent compatibility, prevents foaming. For high viscosity systems.
ASTRA DF
2207NS
NOPCO NXZ
WB
20%
Highly effective defoaming, widely used in emulsion paints. Does not have a negative effect on paintwork.
ASTRA DF
2407NS
WB
100%
High efficiency, the additive should be introduced into the system at the dispersion stage.
ASTRA DF
2507NS
BYK-034
WB
20%
High efficiency, the additive should be introduced into the system at the dispersion stage.
ASTRA DF
2607NS
WB
100%
High efficiency, the additive should be introduced into the system at the dispersion stage.
ASTRA DF
2707NS
O / WB
100%
Highly effective, designed for water-based systems. Does not affect gloss or overcoating.
ASTRA DF
2807NS
O / WB
100%
Strong silicone-free defoamer, prevents foam formation. Does not affect the appearance of the coating.
With ASTRA’s extensive expertise in foam control solutions, we provide tailored defoamers that meet the specific needs of your industrial processes. Our non-silicone defoamers are designed to deliver optimal performance and quality, helping you achieve superior results without the drawbacks of silicone contamination.
Key Benefits of ASTRA’s Non-Silicone Defoamers:
1. Versatility Across Applications: ASTRA’s non-silicone defoamers are compatible with a wide range of industrial processes, including the production of coatings, printing inks, adhesives, and plastic materials.
2. Silicone-Free Formula: Perfect for processes sensitive to silicone contamination, such as food packaging, automotive coatings, and electronic applications.
3. Efficient Foam Suppression: Provides rapid and effective foam control, ensuring smooth and efficient production without compromising the quality of your product.
4. Enhanced Surface Quality: Prevents surface imperfections caused by foam, ensuring a flawless finish for coatings and other surface applications.
5. Improved Product Properties: By minimizing foam, ASTRA’s non-silicone defoamers help maintain the desired viscosity, texture, and appearance of your products.
