Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dowsil 2200 Defoamer

DOWSIL 2200 is a high-performance silicone-based antifoam engineered for demanding industrial environments. Its unique polysiloxane-polyether composite structure maintains activity in pH 2–12 and temperatures ≤150°C, reducing dynamic surface tension to 22–25 mN/m—ideal for high-shear, high-solids systems like fermentation broths and textile dye pastes. With micron-level dispersion technology, it enables rapid bubble collapse (≤10 sec) and long-lasting foam suppression (8+ hours), while remaining compatible with anionic/nonionic surfactants to minimize defects in coatings/adhesives and boost yield by 15%–30%.

Product Information of Dowsil 2200 Defoamer

  1. Broad-Spectrum Efficiency: Acts on micron-to-millimeter bubbles, especially effective in viscous media (e.g., printing pastes).

  2. Extreme Condition Stability: Remains active in strong acid/alkali (pH 2–12) and high-salinity environments, suitable for wastewater treatment.

  3. Low-Dosage Persistency: Recommended usage of 0.05%–0.3% cuts costs by reducing frequent recharging.

  4. Eco-Compliance: APEO-free, VOC<50g/L; meets EU REACH and China GB 24408.

  5. Easy Integration: Water-dispersible emulsion, directly addable during grinding or post-dilution.

Areas of Application of Dowsil 2200 Defoamer

  1. Bio-Fermentation: Controls foam in antibiotic/enzyme production to reduce fermenter overflow.

  2. Textile Dyeing: Eliminates foam in reactive dye printing and polyester HT dyeing for uniform fastness.

  3. Industrial Coatings: Prevents roller-coating bubbles/craters in epoxy floor and coil coatings.

  4. Metalworking Fluids: Suppresses foam in cutting/quenching oils to extend fluid life.

Specifications Of Dowsil 2200 Defoamer

Type
Silicone-polyether composite
Appearance
Milky liquid
Active Content
Polysiloxane derivative (30%)
pH Range
2-12
Dynamic Surface Tension
22-25 mN/m (1% aqueous)
Recommended Dosage
0.05%-0.3% (on total formulation)
Flash Point
>100℃
Packaging
25kg/drum or 200kg/IBC


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