Name: Dow DOWSIL ACP-3990 Defoamer
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Dow DOWSIL ACP-3990 Defoamer

Highly effective silicone-based defoamer for rapid foam knockdown and long-term foam suppression.
Excellent compatibility with water-based systems, including acrylic, vinyl acetate, and styrene-butadiene emulsions.
Low dosage requirement—typically effective at 0.05–0.3 wt% active in final formulation.
Thermally stable up to 120 °C, supporting high-temperature processing conditions.
Non-yellowing and inert in cured films, preserving optical clarity and color stability.

Typical Applications Of Dow DOWSIL ACP-3990 Defoamer

Architectural and industrial waterborne paints and coatings.
Adhesives and sealants, especially latex-based pressure-sensitive adhesives (PSAs).
Construction chemicals, including cementitious tile adhesives and grouts.
Textile and leather finishing formulations requiring low-foam processing.
Water-based inks and overprint varnishes.

Chemical Type	Silicone polymer dispersion in hydrocarbon carrier
Product Form	Opaque white liquid
Appearance	White to off-white, viscous liquid
Primary Applications	Waterborne coatings, adhesives, construction chemicals, textiles
Key Features	Fast-acting, persistent antifoam; low surface tension; shear-stable
Benefits	Reduces pinholing and cratering; improves gloss uniformity; enhances production efficiency
pH Range (1% aqueous dilution)	6.0–8.0
Storage Stability	Stable for ≥12 months at 5–30 °C in unopened container

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E-mail: wangxingqiang@ericwchem.com
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