Name: Dow SILASTIC 3-8186 Defoamer
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Dow SILASTIC 3-8186 Defoamer

High-efficiency silicone-based defoaming agent designed for rapid foam knockdown and long-term foam suppression.
Excellent compatibility with water-based systems, including acrylics, vinyl acetate copolymers, and styrene-butadiene emulsions.
Low dosage requirement—effective at 0.05–0.3 wt% in most formulations—minimizing impact on final product properties.
Thermally stable up to 120 °C, supporting high-temperature processing conditions without degradation or re-foaming.
Non-yellowing and non-staining; maintains clarity and color stability in sensitive coating and adhesive applications.

Typical Applications Of Dow SILASTIC 3-8186 Defoamer

Architectural and industrial waterborne coatings (e.g., interior/exterior paints, primers, and topcoats).
Water-based adhesives and sealants, including PVA, EVA, and SBR formulations.
Textile and leather finishing auxiliaries, such as dye baths, softeners, and impregnation solutions.
Construction chemicals, including cementitious grouts, tile adhesives, and self-leveling underlayments.
Printing inks and overprint varnishes where surface defect control is critical.

Chemical Type	Dimethylpolysiloxane-based emulsion with hydrophobic silica
Product Form	White to off-white opaque liquid
Appearance	Stable, pourable emulsion; slight sedimentation may occur—readily redispersible by gentle stirring
Primary Applications	Defoaming in water-based polymer dispersions and aqueous industrial formulations
Key Features	Rapid foam collapse, low surface tension, broad pH stability (pH 4–11)
Benefits	Improved production efficiency, reduced pinholing and cratering, enhanced film uniformity
Storage Stability	12 months unopened at 5–30 °C; avoid freezing and prolonged exposure to >40 °C
Recommended Use Level	0.05–0.3 wt% active on total formulation weight

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