Defoamer, Solvent-borne, Speciality Additive

VP 5680A Silicone defoamer

5680A Silicone Defoamer represents a pinnacle of surfactant technology, engineered specifically to address the most demanding foam control challenges in complex industrial environments. Formulated as a high-performance organopolysiloxane emulsion, this specialized agent operates through the rapid reduction of surface tension, effectively destabilizing the lamellar structure of aqueous foam bubbles. Unlike traditional antifoaming agents, 5680A offers exceptional chemical stability and dispersion characteristics, ensuring long-lasting suppression of micro-foam and macro-foam alike. It is designed for compatibility across a wide spectrum of ionic environments, making it indispensable for processes involving high shear or extreme pH shifts. Its advanced molecular architecture allows for low dosage requirements while maintaining peak performance in concentrated systems. By preventing air entrainment, 5680A enhances process efficiency, prevents overflow, and protects equipment from cavitation. As a versatile solution, it bridges the gap between rapid knockdown and sustained antifoaming persistence, providing manufacturers with a reliable tool for optimizing throughput and product quality.

Attributes

Key Features and Benefits

Instantaneous Foam Suppression: Rapidly eliminates existing foam upon contact, reducing downtime in continuous manufacturing processes.
Exceptional Longevity: Provides sustained antifoaming properties, preventing foam regeneration even under prolonged high-shear conditions.
Superior Chemical Inertness: Maintains structural integrity in acidic and alkaline environments (pH 1–14), ensuring broad industrial versatility.
Enhanced Thermal Stability: Operates efficiently at elevated temperatures without oil spotting or emulsification failure.
Low Dosage Efficiency: Achieves maximum results at minimal concentrations, significantly lowering overall operational costs for large-scale applications.
Compatibility: Easily dispersible in water-based systems without negatively affecting the final product’s physical properties or aesthetic quality for end users and downstream processing.

Specifications

Technical Highlights

Chemical Composition: High-activity modified polysiloxane and polyether synergy.
Physical State: Milky white, low-viscosity emulsion for easy metering and pumping.
Active Content: High solids formulation (typically 20% to 30% depending on grade).
pH Resilience: Stable performance across a wide range, specifically optimized for pH 3.0–12.0.
Density Profile: Approximately 1.00 to 1.05 g/cm³ at 25°C, ensuring uniform distribution.
Storage Stability: Excellent shelf life (minimum 12 months) when stored in ambient conditions.
Solubility: Fully dispersible in aqueous phases, preventing surface defects like “fish eyes” in coatings.
Shear Resistance: Maintains efficacy under intense mechanical agitation or circulation.
Temperature Range: 10°C to 100°C.
Ionic Nature: Non-ionic.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Wastewater Treatment: Controls foam in biological aeration tanks, landfills, and industrial effluent processing.
Textile Industry: Essential for high-temperature dyeing, printing, and scouring processes to prevent fabric spotting.
Pulp and Papermaking: Optimized for black liquor recovery and wet-end processing to improve drainage.
Adhesives and Coatings: Prevents air entrapment during high-speed mixing, ensuring smooth, defect-free finishes.
Metalworking Fluids: Stabilizes cooling and lubricating systems by suppressing foam generated during high-speed machining.
Agricultural Chemicals: Enhances the sprayability and coverage of liquid fertilizers and pesticides.
Petrochemical Processing: Effective in gas scrubbing and refinery distillation units to maintain flow.
Detergent Formulations: Regulates suds in industrial liquid cleaners.