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

Dowsil 7 Defoamer

DOWSIL 7 Additive is a high-performance silicone defoamer from Dow, specialized for solvent-based systems. It uses modified polysiloxane technology to enable rapid bubble collapse (≤15 sec) and long-term foam suppression. With a transparent liquid form (0.74–0.84 cSt viscosity) and low surface tension (≤25 mN/m), it enhances leveling in coatings and inks, minimizing pinholes and craters during application. Stable across pH 2–12 and compatible with acrylic, PU, and epoxy resins, it meets FDA 21 CFR 175.300 standards for food-contact inks.

Product Information of Dowsil 7 Defoamer

  1. Broad-Spectrum Defoaming: Eliminates micron-to-millimeter bubbles in high-solids coatings and UV inks.

  2. Low-Viscosity Dispersion: 0.74–0.84 cSt viscosity ensures easy blending, no high-shear mixing required.

  3. Thermal Stability: Withstands temperatures ≤150°C, suitable for baked coatings.

  4. Eco-Compliance: VOC<50g/L; certified under EU REACH and China GB 24408.

  5. Cost Efficiency: Effective at 0.1%–0.5% dosage, cutting costs by 20%.

Areas of Application of Dowsil 7 Defoamer

  1. Industrial Coatings: Reduces roller marks in auto OEM/coil coatings (boosts gloss by 15%).

  2. Printing Inks: Improves uniformity in solvent flexo/gravure inks.

  3. Wood Coatings: Enhances flow in high-gloss varnishes.

  4. Plastic Coatings: Optimizes adhesion on ABS/PC surfaces.

Specifications Of Dowsil 7 Defoamer

Type
Modified polysiloxane defoamer
Appearance
Clear liquid
Viscosity (25°C)
0.74-0.84 cSt
Flash Point
12℃ (closed cup)
Solid Content
4.5%-6%
Specific Gravity
0.81
Recommended Dosage
0.1%-0.5% (on total formulation)
Packaging
25kg/drum or 200kg/IBC


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *