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Primarily made of mineral oil (85–95%) combined with hydrophobic particles (silica) and emulsifiers to aid dispersion.

They work by spreading quickly over the foam surface, causing the liquid film of the bubbles to break, and promoting air release.

Polymer-based defoamers are highly efficient, non-silicone, or low-silicone agents, often comprising acrylate polymers or polyethers in organic carriers, designed to control foam and release entrained air in demanding industrial systems

Silicone-based defoamers are highly efficient, low-surface-tension agents—typically based on polydimethylsiloxane (PDMS) and hydrophobic silica—designed to quickly break and prevent foam in industrial, aqueous, and non-aqueous systems

Silicone Oil Defoamer are the anti- foaming chemical additives that contain a blend of activated silicone oil and surfactants. This type of agents are primarily used in industrial process liquids to reduce the foam formation. Formation of the foam can cause defects on surface coatings and prevent the efficient filling of containers. In addition to reduction in the foam generation, this type of additive also controls its complete generation in the industrial liquid.

• Action Mechanism: Works by lowering surface tension, entering the foam bubble interface, and rupturing the lamella to collapse the foam.

Key Characteristics & Benefits

• Rapid Action: Quickly breaks down existing surface foam (defoamer) and prevents new foam generation (anti-foamer).
• Composition: Often composed of silicone emulsions (10%-30% active ingredient), fatty acids, or hydrophobic oil.