Name: BASF Efka SI2040 Defoamer
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of BASF Efka SI2040 Defoamer

Highly effective silicone-based defoamer for rapid foam knock-down and long-term foam suppression.
Excellent compatibility in water-based systems, including acrylic, styrene-acrylic, and vinyl acetate emulsions.
Low dosage requirement—typically effective at 0.1–0.5% w/w on total formulation—minimizing impact on final product properties.
Stable under high-shear mixing and elevated temperatures encountered during polymerization and coating production.
Non-yellowing and does not adversely affect gloss, clarity, or film integrity in finished coatings and adhesives.

Typical Applications Of BASF Efka SI2040 Defoamer

Architectural and industrial waterborne coatings (e.g., interior/exterior paints, primers, and topcoats).
Water-based adhesives and sealants, including PVA and EVA formulations.
Textile and leather finishing auxiliaries requiring low-foam processing.
Construction chemicals such as cementitious tile adhesives and grouts.
Industrial cleaning formulations where foam control is critical during application and rinsing.

Chemical Type	Silicone oil-in-water emulsion
Product Form	Opaque white liquid
Appearance	Homogeneous, slightly viscous emulsion
pH (1% aqueous solution)	6.0–7.5
Density (20 °C)	Approx. 1.02–1.05 g/cm³
Viscosity (25 °C, Brookfield LVT, spindle #3, 6 rpm)	1,500–3,500 mPa·s
Primary Applications	Waterborne coatings, adhesives, construction chemicals, textile auxiliaries
Key Features	Rapid defoaming, persistent antifoam action, broad compatibility, low dosage efficiency

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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