Silicone defoamers are a type of chemical product used to eliminate or reduce foam in industrial and household applications. They work by breaking down the surface tension of the foam, causing it to collapse and disappear. Silicone defoamers are typically made from a combination of silicone oils and surfactants, and are used in a wide range of industries including textiles, paper, paint and coatings, food and beverage, and detergents. They are valued for their effectiveness, stability, and compatibility with many different types of materials, making them a popular choice for manufacturers and processors.
ASTRA DF series
How Do Silicone Defoamers Work?
The defoaming process involves silicone oils and surfactants that work together to destabilize foam structures. When applied, silicone defoamers spread across the surface of the foam bubbles, creating a thin film that weakens their stability. This results in the rapid breakdown of foam, restoring smooth operation to your processes.
Silicone defoamers are preferred for their superior performance and adaptability. They offer several key benefits:
Applications:
•Textiles: Enhancing dyeing and finishing processes by preventing foam-related issues.
•Paper and Pulp: Improving the quality of paper by eliminating foam during production.
•Paint and Coatings: Ensuring a smooth, bubble-free finish in paints and coatings.
•Food and Beverage: Maintaining product quality and consistency by controlling foam during processing.
•Detergents and Cleaning Products: Reducing excessive foaming for more efficient cleaning.
Defoamers
PRODUCT
ITEM CODE
ANALOGUE
SYSTEMS
ACTIVE PART
PRODUCT FEAUTURES
DOWNLOAD ТDS
ASTRA DF
104
BYK-A530; BYK 330
O / RC
7%
Good conformity, high defoaming rate. Especially suitable for low viscosity epoxy systems.
ASTRA DF
204
DISPERBYK-141, EFKA 2038, TEGO 962
O
3%
High efficiency, good compatibility. Low tendency for paint shrinkage.
ASTRA DF
304
DISPERBYK-141, EFKA 2038, TEGO 962
O
3%
Effective at the production stage, prevents cratering, good compatibility, low tendency to shrinkage of paintwork. Does not affect gloss.
ASTRA DF
404
Elementis-5300, DEUCHEM 5300, EFKA 2035
O
1%
Excellent compatibility, good foam inhibition and destruction properties. Can be used at all stages of paint and varnish production and application.
ASTRA DF
504
BYK-066N, TEGO 931, TEGO 932
O
1%
Good compatibility, high efficiency in releasing air from the system and defoaming. Does not affect the transparency of the system.
ASTRA DF
604
BYK-088
O / RC
3%
Good compatibility, high defoaming rate, especially suitable for low viscosity epoxy systems.
ASTRA DF
704
O / RC
100%
High efficiency, especially suitable for high viscosity systems, inhibits foam formation, extinguishes foam, eliminates microfoam. For epoxy semi-printing inks.
ASTRA DF
804
BYK-085, DC 6800
O / RC
100%
High efficiency, good compatibility. Can improve the fluidity of the system.
ASTRA DF
904
BYK-077
Р
50%
Effective at the production stage.
ASTRA DF
1004
Tego-900，Elementis-6800
O / RC
100%
High efficiency, especially suitable for high-viscosity systems, inhibits foam formation, extinguishes foam, eliminates microfoam. For epoxy floors and printing inks.
ASTRA DF
1104
KS-66
O / RC
100%
High efficiency, especially suitable for high viscosity systems, inhibits foam formation, extinguishes foam, eliminates microfoam. For epoxy floors and printing inks.
ASTRA DF
1204
WB
25%
Low crater tendency. High defoaming rate. Easy to incorporate into the system.
ASTRA DF
1304
DC-65
WB
50%
Low tendency to form craters. High defoaming rate. Effective even at low dosages.
ASTRA DF
1404
WB / RC
100%
High defoaming efficiency even at low dosages. Should be added at the dispersion stage. Suitable for aqueous and solvent-free systems of medium and high polarity.
ASTRA DF
1504
DC-71
WB
100%
High efficiency, especially suitable for high viscosity water systems, low tendency to form craters.
ASTRA DF
1604
Tego-810
WB
100%
High foam suppression efficiency even at low dosages.
ASTRA DF
1704
Tego-825（Evonik）
WB
20%
Low tendency to form craters. High defoaming rate. Effective even at low dosages.
ASTRA DF
1804
O / RC
100%
High efficiency, especially suitable for high-viscosity systems, inhibits the formation of foam, extinguishes foam, eliminates microfoam. For epoxy floors and printing inks.
ASTRA DF
1904
BYK-019
WB / RC
60%
Highly effective silicone oil type defoamer. Particularly suitable for high viscosity systems, eliminates microfoam. Must be added at the dispersion stage.
ASTRA DF
2104
Tego-3062（Evonik）
O / WB / RC
100%
High defoaming efficiency even at low dosages. Should be introduced into the system at the dispersion stage.
ASTRA DF
2204
Tego-1488（Evonik）
WB
20%
High defoaming efficiency even at low dosages. Low tendency to form craters.
ASTRA DF
2304
Tego-825
WB
20%
High defoaming efficiency even at low dosages. Low tendency to form craters.
ASTRA DF
2404
Tego-901W
WB
100%
High defoaming efficiency even at low dosages. Low tendency to form craters.
ASTRA DF
2504
Tego-902W
WB
20%
High efficiency of foam suppression Does not have a negative impact on the properties of paintwork. Quickly suppresses foam.
ASTRA DF
2604
Tego-904W
WB
100%
Strong silicone antifoam, should be added at the dispersion stage.
ASTRA DF
2704
Agitan 731
WB
100%
High efficiency of defoaming even at low dosages. Used in adhesive systems, wastewater treatment.
ASTRA DF
2804
Tego 8050
WB
100%
High efficiency of foam suppression even at low dosages. Used in water-based industrial paints and varnishes, paints for wood.
ASTRA DF
2904
Tego 833
WB
100%
High efficiency of defoaming even at low dosages. Used in water-based industrial paints and varnishes, wood paints. Good compatibility.
Foam control is essential for maintaining the quality and efficiency of your operations. Our range of silicone defoamers offers reliable and effective solutions tailored to your specific needs. Whether you’re in the textile, paper, paint, food, or cleaning industry, we provide the right defoamer to keep your processes running smoothly.
