Polyether Defoamer

Polyether defoamers are typically based on polymers like polypropylene glycol (PPG antifoam) or ethylene oxide/propylene oxide (EO/PO) copolymers, sometimes modified further (like polyether amines or polyetherester defoamers). Key polyglycol foam properties influencing performance include:

• Molecular Weight & Structure: Affects solubility, cloud point, and defoaming efficiency at different temperatures.  For example, different structures like CP type (Cloud Point type, often glycol polymers) or SP type (Solubility Point type, like modified polyoxypropylene polyoxyethylene glycol) offer varying performance characteristics.)
• HLB Value: Influences dispersibility and interaction with the foaming medium.
• Surface Tension Reduction: A primary mechanism for how defoamer works – they lower the surface tension of the liquid film.
• Water Solubility/Dispersibility: Many polyether antifoams are water soluble defoamers or readily dispersible, simplifying application.

Polyether defoamers are workhorses in many industrial defoamer applications:

• Pulp & Paper: Used in pulping, papermaking wet-end, and coating.
• Fermentation: Including food defoamer grades for food/beverage fermentation and robust options for industrial fermentation.
• Building &Construction: Prevent foam during production and application.
• Industrial Cleaning: Control foam in detergents and cleaning processes.
• Wastewater Treatment: Manage foam in aeration basins and effluent streams.
• Chemical Processing: Used in various synthesis and formulation processes.
• Textiles: Applied during dyeing and finishing.
• Agrochemicals: Used in certain pesticide formulations.

As a dedicated polyether defoamer factory and supplier, INVINO offers a selection of high-quality polyether defoamer agent solutions. Below are specifications for some of our standard grades, suitable for various defoaming agents applications. Contact us to discuss your specific needs, polyether defoamer price, or to buy polyether defoamer solutions.

Q: Which industries mainly use polyether defoamers?
A:Pulp & Paper,Fermentation,Industrial Cleaning, Wastewater Treatment,Chemical Processing, Textiles

Q: How do polyether defoamers compare to silicone defoamers?
A: Silicone: Highest Efficiency | Hard to Rinse | Residue/Surface Defect Risk
Polyether: Good Efficiency | Easy to Rinse | Low Residue/Surface Friendly

Q: What factors should be considered when selecting/comparing polyether antifoams?
A: Chemical Structure: Consider EO/PO ratio, molecular weight (MW), and end-group type (these define key properties).
Cloud Point: Important for aqueous systems; ensure it suits your process temperature.
     Solubility/Dispersibility: How well does it disperse in your system (water-based, oil-based, etc.)?
    Performance: How fast does it knock down foam? How long does it suppress foam? What dosage is needed?
    System Suitability: Is it stable at your process temperature and pH? Is it compatible with other components?

While polyether defoamers are versatile, optimal performance requires considering:

• System Compatibility: Always test with your specific formulation/process stream.
• Temperature & pH: Select a grade suitable for your operating conditions.
• Dosage Optimization: Determine the minimum effective level through trials.
• Dispersion: Ensure proper mixing for the defoamer antifoaming agent to work effectively.

• Polyether defoamers offer a powerful and versatile non-silicone approach to foam control across numerous industries. Their unique properties, including good compatibility and often favorable environmental profiles, make them an excellent choice for many applications. INVINO provides a wide range of high-quality polyether antifoams, backed by technical expertise to help you select the best defoaming agent solution for your needs.