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High molecular weight silicone polymer delivering exceptional film-forming capability and surface lubricity.
Non-ionic emulsion formulation ensures excellent compatibility with anionic, cationic, and non-ionic systems.
Stable in broad pH range (pH 4–10), supporting formulation flexibility in diverse aqueous systems.
Low foaming profile, minimizing processing issues in high-shear or recirculating applications.
Readily dilutable with water and compatible with common co-solvents such as ethanol and isopropanol.
Textile softeners and finishing agents for enhanced hand feel and wrinkle resistance.
Personal care formulations including conditioners, shampoos, and leave-on hair treatments.
Industrial metalworking fluids requiring lubricity, corrosion inhibition, and foam control.
Coatings and inks for improved substrate wetting, slip, and mar resistance.
Agrochemical adjuvants to enhance spray droplet retention and foliar coverage.
| Chemical Type | High molecular weight polydimethylsiloxane (PDMS) non-ionic emulsion |
| Product Form | Aqueous emulsion |
| Appearance | Opaque white to off-white liquid |
| Active Content | 20 ± 1 wt% |
| pH (1% aqueous solution) | 6.0 – 7.5 |
| Density (25°C) | 0.98 – 1.02 g/cm³ |
| Viscosity (Brookfield, #2 spindle, 20 rpm, 25°C) | 50 – 200 mPa·s |
| Storage Stability | ≥ 12 months at 5–30°C in unopened original container |
Q1: What is the primary function of DOWSIL HMW 2220 in aqueous formulations?
A: DOWSIL HMW 2220 functions as a high-molecular-weight silicone emulsion that imparts surface softness, lubricity, and hydrophobicity to substrates. It is commonly used to enhance feel, reduce friction, and improve water repellency in coatings, textile treatments, and personal care emulsions.
Q2: Is DOWSIL HMW 2220 compatible with anionic and cationic systems?
A: As a non-ionic silicone emulsion, DOWSIL HMW 2220 offers broad compatibility with many common surfactants and polymers. However, stability in strongly anionic or cationic environments should be verified experimentally, particularly under high shear, elevated temperature, or extreme pH conditions.
Q3: How should DOWSIL HMW 2220 be incorporated into a formulation?
A: It is typically added during the cool-down phase of aqueous formulations to preserve emulsion integrity. Direct addition with gentle agitation is recommended; high-shear mixing or prolonged exposure to temperatures above 60 °C may destabilize the emulsion.
Q4: Can DOWSIL HMW 2220 be used in personal care applications?
A: Yes — it is suitable for rinse-off and leave-on cosmetic formulations where sensory enhancement, conditioning, and film-forming properties are desired. Formulators should confirm compatibility with preservative systems and conduct standard safety and stability testing per intended use.
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E-mail: wangxingqiang@ericwchem.com
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