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China Polyether Defoamers - Leading Suppliers & Factory for Foam Control Solutions
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China Polyether Defoamers - Leading Suppliers & Factory for Foam Control Solutions

Polyether defoamers are non-ionic surfactants derived from polypropylene glycol (PPG) and EO/PO block copolymers, commonly referred to as PAG. These high-performance defoamers provide exceptional dispersion, excellent water solubility, and efficient foam suppression. They are widely utilized in various industries, including papermaking, coatings, wastewater treatment, and fermentation. As a leading supplier based in China, our factory ensures the highest quality standards for our polyether defoamers, making them the ideal choice for your industrial needs
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    Product Details

    Product Specification

    Appearance

    Solid Content (%)

    PH

    Viscosity (cps)

    Application

    Light yellow to colorless transparent liquid

    100%

    4.0–9.0

    300–600

    Good compatibility with the application system and strong foam suppression performance.

    Light yellow to colorless transparent liquid

    100%

    4.0–9.0

    300–600

    Good compatibility with the application system and strong foam suppression performance.

    Light yellow to colorless transparent liquid

    100%

    6.0–8.0

    100–1000

    Good compatibility with the application system and strong foam suppression performance.

    Light yellow to colorless transparent liquid

    100%

    6.0–8.0

    100–1000

    Good compatibility with the application system and strong foam suppression performance.

    Yellowish to light brown liquid

    100%

    5.0–9.0

    100–1000

    Used in high-temperature processing and in systems with extreme pH values.

    Yellowish to light brown liquid

    100%

    5.0–9.0

    100–1000

    Used in high-temperature processing and in systems with extreme pH values.

    Yellowish to light brown liquid

    100%

    5.0–9.0

    100–1000

    Used in high-temperature processing and in systems with extreme pH values.

    Yellowish to light brown liquid

    100%

    5.0–9.0

    100–1000

    Used in high-temperature processing and in systems with extreme pH values.
    Frequently Asked Questions
    Q What does 100% Solid Content mean for these defoamer products?
    100% Solid Content means the product contains no water or solvent diluents — it is a pure active defoamer. This results in higher efficiency per unit volume, reduced shipping weight, and easier dosage control in formulations.
    Q What is the difference between the light yellow/colorless variants and the yellowish to light brown variants?
    The light yellow to colorless transparent liquid variants are typically designed for systems requiring good compatibility and strong foam suppression across a moderate pH range (4.0–9.0 or 6.0–8.0). The yellowish to light brown liquid variants are formulated for more demanding conditions, such as high-temperature processing or systems operating at extreme pH values (5.0–9.0).
    Q What viscosity range should I select for my application?
    Products with a viscosity of 300–600 cps are generally better suited for applications requiring easier flow and mixing. Products in the 100–1000 cps range offer broader flexibility and are commonly used in high-temperature or extreme pH systems where a wider viscosity tolerance is acceptable.
    Q Are these defoamers compatible with water-based systems?
    Yes. The product specifications indicate good compatibility with a variety of application systems. However, since these are 100% active (solvent-free) defoamers, it is recommended to pre-dilute or disperse the product appropriately before adding it to water-based systems to ensure uniform distribution and optimal performance.
    Q Can these defoamers be used in high-temperature industrial processes?
    Yes. The yellowish to light brown liquid variants are specifically noted for use in high-temperature processing environments. Their formulation ensures thermal stability and continued foam suppression effectiveness even under elevated temperature conditions.
    Q How do I choose the right product based on pH requirements?
    For systems operating within a pH range of 4.0–9.0 or 6.0–8.0, the light yellow to colorless transparent liquid grades are recommended due to their strong foam suppression and broad compatibility. For systems with more extreme or fluctuating pH conditions, the yellowish to light brown liquid grades (pH 5.0–9.0) are the preferred choice as they are engineered to perform reliably under such challenging environments.