Defoamer, Solvent-borne, Speciality Additive

VP 5066N Silicone defoamer

The 5066N Silicone Defoamer represents an advanced chemical solution engineered for demanding industrial environments where foam suppression and prevention are critical. Composed primarily of organically modified polysiloxanes and high-performance emulsifiers, this concentrated emulsion is specifically formulated to maintain structural integrity under extreme conditions, including high shear, varying pH ranges, and elevated temperatures. Its molecular architecture allows for rapid spreading across the liquid-gas interface, effectively destabilizing foam lamellae to facilitate immediate collapse. Unlike conventional silicone oils, the 5066N variant is designed for superior compatibility with aqueous systems, minimizing the risk of silicone spotting or surface defects in sensitive applications like textile finishing or chemical processing. It serves as a versatile auxiliary agent, providing both knockdown capabilities and long-lasting foam inhibition. Its robust chemical profile ensures that it remains active throughout prolonged processing cycles, making it an indispensable tool for optimizing operational efficiency and ensuring high-quality output in modern industrial manufacturing workflows.

Attributes

Key Features and Benefits

Rapid Defoaming Action: Demonstrates exceptional “knockdown” speed, eliminating existing foam within seconds of initial application.
Persistent Antifoaming: Provides long-term inhibition of foam regeneration, even during high-intensity mechanical agitation or continuous circulation.
Excellent Temperature Stability: Maintains chemical efficiency and physical stability in high-temperature environments, typically exceeding 100°C.
Alkali and Acid Resistance: Functions optimally across a broad pH spectrum, making it ideal for harsh chemical processing conditions.
High Compatibility: Formulated to prevent oil spots or “silicone eye” defects, ensuring uniform surface finishes.
Cost Efficiency: High concentration allows for extremely low dosage requirements, minimizing overall operational costs while maintaining peak performance throughout production.

Specifications

Technical Highlights

Chemical Composition: Organically modified polysiloxane emulsion optimized for rapid dispersion in aqueous systems.
Active Content: Typically ranges from 30% to 60%, depending on the specific dilution requirement of the end-user.
Ionic Character: Primarily non-ionic or weakly anionic, ensuring compatibility with a wide range of surfactants and auxiliaries.
Solubility: Readily dispersible in cold or warm water, forming a stable emulsion that does not separate easily.
Environmental Profile: Formulated to be APEO-free and compliant with modern ecological standards for industrial chemicals.
Shear Resistance: Exhibits high mechanical stability under high-speed pumping and high-shear mixing operations, maintaining structural integrity without breaking the emulsion droplets.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Textile Industry: Widely utilized in high-temperature and high-pressure overflow dyeing, printing, and scouring processes for synthetic fibers.
Chemical Manufacturing: Effective in neutralizing foam during the synthesis of resins, adhesives, and various water-based polymer dispersions.
Water Treatment: Applied in industrial wastewater treatment plants to manage foam generated during aeration or chemical neutralization stages.
Pulp and Paper: Used in the bleaching and sizing stages to prevent air entrainment and improve paper formation quality.
Pesticide Production: Incorporated into liquid pesticide formulations to prevent foaming during dilution and application in agricultural spraying equipment.
Adhesive Processing: Ensures smooth application of water-borne glues by eliminating micro-bubbles.