Name: Allnex KNOCKDOWN 155 Defoamer
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Allnex KNOCKDOWN 155 Defoamer

Highly effective silicone-free defoamer for rapid foam knockdown in water-based systems.
Excellent compatibility with acrylic, vinyl acetate, and styrene-butadiene emulsions.
Low dosage requirement—effective at 0.05–0.3 wt% active on total formulation.
Non-silicone chemistry minimizes risk of substrate contamination and surface defects.
Stable under high-shear mixing and across a broad pH range (pH 4–12).

Typical Applications Of Allnex KNOCKDOWN 155 Defoamer

Chemical Type	Non-silicone, mineral oil–based defoamer with hydrophobic silica
Product Form	Opaque white liquid
Appearance	White to off-white, viscous liquid
Primary Applications	Water-based emulsion polymer systems, architectural and industrial coatings
Key Features	Rapid foam suppression, low haze, no silicone carryover
Benefits	Improved production efficiency, reduced rework, enhanced film appearance
pH (1% aqueous dispersion)	6.0–8.5
Storage Stability	Stable for ≥12 months at 5–30 °C in sealed container

Get in Touch with ERICW

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Contact With Us:

E-mail: wangxingqiang@ericwchem.com
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15921782326
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China