Name: DOW DOWSIL 520 Emulsion
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of DOW DOWSIL 520 Emulsion

High-solids, anionic methylhydrosiloxane-based silicone emulsion offering excellent hydrophobicity and surface smoothness.
Provides durable water repellency without compromising substrate breathability or flexibility.
Compatible with a broad range of water-based systems including acrylics, polyurethanes, and cellulose derivatives.
Low foaming profile ensures stable performance in high-shear mixing and continuous industrial processes.
Enables easy incorporation into formulations without requiring pH adjustment or co-solvents.

Typical Applications Of DOW DOWSIL 520 Emulsion

Textile finishing for durable water and stain resistance on cotton, polyester, and blends.
Leather treatment to enhance water repellency, softness, and grain clarity.
Construction additives for hydrophobization of cementitious renders, plasters, and grouts.
Nonwovens treatment to improve liquid barrier properties while maintaining air permeability.
Coatings and inks where silicone-enhanced slip, leveling, and moisture resistance are required.

Chemical Type	Methylhydrosiloxane (MH) based anionic silicone emulsion
Product Form	Aqueous emulsion
Appearance	Opaque white to off-white liquid
Solids Content	40 ± 1 wt%
pH (1% aqueous solution)	5.0 – 6.5
Viscosity (25°C, Brookfield LVT, Spindle #3, 6 rpm)	1,500 – 3,500 cP
Particle Size (D50)	0.2 – 0.5 µm
Freeze-Thaw Stability	Stable after one cycle (–10°C for 16 h, then 25°C for 8 h)

Get in Touch with ERICW

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Contact With Us:

E-mail: wangxingqiang@ericwchem.com
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Have a Questions? Call Us:

15921782326
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China