A defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids.
A defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. Commonly used agents are insoluble oils, polydimethylsiloxanes and other silicones, certain alcohols, stearates and glycols. The additive is used to prevent formation of foam or is added to break a foam already formed. We can make a distinction between macro- and micro-foam. Macro-foam is often formed at the surface of the coating and micro-foam is entrapment of air bubbles what is not able to rise fast enough to the surface of the coating. For micro-foam you need a so-
called air release agent to coagulate the micro bubbles to bigger air bubbles so they can rise faster to the surface to be destroyed. For micro foam you need a so-called air release agent to coagulate the micro bubbles to bugger air bubbles so they can rise faster to the surface to be destroyed. In industrial processes, foams pose serious problems.
They cause defects on surface coatings. They prevent the efficient filling of containers. A variety of chemical formulae are available to prevent formation of foams.
Properties:
Generally a defoamer is insoluble in the foaming medium and has surface active properties. An essential feature of a defoamer product is a low viscosity and a facility to spread rapidly on foamy surfaces. It has affinity to the air-liquid surface where it destabilizes the foam lamellas. This causes rupture of the air bubbles and breakdown of surface foam. Entrapped air bubbles are agglomerated, and the larger bubbles rise to the surface of the bulk liquid more quickly.
is a strong defoamer suitable for all solvent borne coating systems. It prevents the formation of foam during the manufacture and filling. The additive has an immediate foam-destroying effect and does not have influence on the intercoat adhesion. Due to the strong defoaming performances, the product is less suitable for high gloss clear coatings. Influence of transparency in clear systems should be evaluated
is a strong defoamer suitable for all solvent borne coating systems. It prevents the formation of foam during the manufacture and filling.
The additive has an immediate foam-destroying effect and does not have influence on the intercoat adhesion.
Due to the strong defoaming performances, the product is less suitable for high gloss clear coatings. Influence of transparency in clear systems should be evaluated.
is a strong defoamer suitable for all solvent borne and solvent free coating systems. It prevents the formation of foam during the manufacturing and filling. The additive has an immediate foam-destroying effect and does not have influence on the interlayer & re-coating adhesion. The additive is helpful for improving the leveling. Due to the high defoaming efficiency please check the transparency in high gloss clear system.
is medium to strong defoamer to be used in clear coatings as well suitable for pigmented coating systems. Due the chemical structure the product will not cause turbidity, but will give good air-release and macro defoaming properties to avoid pinholing and popping especially in2C PU systems. Also very well suited for PE primers remaining high clarity and transparency, doesn’t cause fogging and
The product is well suited for spraying applications.
is a strong defoamer can be used for all solvent borne coating systems, especially suitable for solvent free epoxy and solvent free UV system. The additive has an immediate foam-destroying effect with very strong deaeration and does not have influence on the intercoat adhesion.
With epoxy resin the defoamer can give slight haziness, but as soon the hardener is added the products becomes fully clear. Therefore the product is suited for pigmented and non pigmented systems.
is a strong silicone free defoamer can be used for all solvent borne coating systems, especially suitable for solvent free self-leveling epoxy system. The additive has excellent defoaming and strong de-aeration, and not influence on the intercoat adhesion. At the same time, it will improve the leveling properties and give excellent film appearance in high gloss systems and will give good compatibility.
is a strong defoamer can be used for all solvent borne and solvent free coating systems, especially suitable for solvent free UV system. The additive has an immediate foam-destroying effect with very strong deaeration and does not have influence on the intercoat adhesion. At the same time, this product can improve the leveling performance.
The compatibility needs to be checked, especially in clear coats.
Silicone-free, polymer-based defoamer for solvent-free, radiation-curing wood and industrial coatings, printing inks and adhesives. Suitable for pigmented and unpigmented coating systems.
The high efficiency of the defoamer is not impacted by pigments, fillers, wax additives or matting agents.
is a strong anti-foam and air-release agent especially suitable for use in unsaturated polyesters, baking coatings, epoxies and acrylic/vinyl acetate combinations. The additive furthermore helps to improve the leveling.
is especially effective in wood and furniture coatings based on glossy polyester, paraffin polyester, and in radiation curable polyester. The additive allows curtain coaters to maintain curtain stability even when only thin layers are applied. When using non-pigmented systems, a slight turbidity may be visible over dark wood. Good results were also found with epoxy systems.
is a silicone-free surface additive for aqueous coatings to prevent surface defects such as cratering, scarring, bubbles, pinholes, orange peel and boiling marks and to improve leveling.
is a silicone-free surface additive for aqueous coatings to prevent surface defects such as cratering, scarring, bubbles, pinholes, orange peel and boiling marks and to improve leveling.
is a solvent free, silicone containing offering good air-release properties especially suitable for solvent based, solvent free and adhesives. The additive furthermore provides leveling properties without causing recoat difficulties.
is an air release agent to prevent foam and bubbles during the manufacture and application clear coatings for wood- and car refinish applications based on polyurethane resins. The product offers a very high clarity and will not cause haziness in the dry film.
is recommended for roller, brush and conventional spray application, also suitable for low polar to high polar binder system, and shows excellent anti micro-foam performance. This product is highly effective for solvent based and solvent free coating systems, which offers optimal defoaming performance at low dosage.
is a silicone-free surface additive for aqueous coatings to prevent surface defects such as cratering, scarring, bubbles, pinholes, orange peel and boiling marks and to improve leveling.
is a strong anti-foam and air-release agent especially suitable for use in unsaturated polyesters, epoxies and acrylic resin systems. The product is especially suitable for self-leveling epoxy systems where it will give very fast air-release and defoaming properties. The additive furthermore helps to improve the leveling.
is a strong defoamer based on organic silicon, this product can be used for grinding and spraying conditions. Working well against micro-foam, therefore also well suited for self-leveling water based epoxy flooring systems.
is a strong defoamer based on organic silicon, this product can be used for grinding and spraying conditions. Working well against micro-foam, therefore also well suited for self-leveling water-based epoxy flooring systems.
is a strong defoamer based on organic silicon, this product can be used for grinding and spraying conditions. Working well against micro-foam, therefore also well suited for self-leveling water based epoxy flooring systems.
is a fluor free modified silicone defoamer solution recommended for roller, brush and conventional spray application, also suitable for low polar to high polar system, and shows excellent micro-foam performance. The defoamer is highly effective for solvent-free and solvent-based coatings, printing inks, and ambient curing plastic systems on the basis of epoxy resin and polyurethane, which offers optimal defoaming balanced with good compatibility. Standard silicone defoamer for all solvent-based systems.
is a strong defoamer based on organic silicone, this product can be used for grinding and spraying conditions. Working well against micro-foam, therefore also well suited for all water-based and pigment concentrates.
is an economical defoamer for architectural and plaster with a tip of silicone to enhance the micro- and macro foam.
is a VOC-free silicone-containing defoamer for aqueous coatings, printing inks and adhesives.
It is particularly suitable for pigmented high gloss, semi-gloss to matted emulsion systems based and on styrene acrylate, acrylate or acrylate/polyurethane with a PVC range from 10–50. Also effective against microfoam.
is an emulsified mineral oil based silicone free defoamer for architectural and plaster.
is a strong defoamer based on organic silicone, this product can be used for grinding and spraying conditions. Working well against micro-and macrofoam, therefore also well suited for all water-based.
is a strong silicone containing anti-foam and air-release agent for solvent-based and solvent free applications, especially suitable for systems based on epoxies, PU and UV systems. The additive furthermore helps to improve the leveling.
is a strong silicone containing anti-foam and air-release agent for solvent-based and solvent free applications, especially suitable for systems based on epoxies, PU and UV systems. The additive furthermore helps to improve the leveling.
UNIQ®FOAM P-571 is a strong silicone free anti-foam and air-release agent for solvent-based and solvent free applications, especially suitable for systems based on unsaturated polyesters, epoxies, PVC plastisols and acrylic resin systems. The additive furthermore helps to improve the leveling.
is a strong anti-foam and air-release agent especially suitable for use in unsaturated polyesters, ambient curing plastic, adhesives and sealants, especially suited for UPE and epoxies based resin systems, The additive furthermore helps to improve the leveling and avoids pinholing and popping
