Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

WACKER LIOSIL HC 303 Silicone Emulsion

WACKER LIOSIL HC 303 is a high-solids, anionic silicone emulsion from WACKER’s LIOSIL® series, designed for textile softening and hydrophobic finishing. It delivers excellent lubricity, smoothness, and durable water repellency on natural and synthetic fibers without impairing breathability or dye uptake. Easy to process, stable in broad pH ranges, and compatible with common auxiliaries.
  • wacker liosil hc 303 silicone emulsion_ab117ab4
  • wacker liosil hc 303 silicone emulsion_ab117ab4

Features Of WACKER LIOSIL HC 303 Silicone Emulsion

  1. Highly stable non-ionic silicone emulsion with excellent shelf life and freeze-thaw resistance.

  2. Provides outstanding water repellency and surface slip without compromising substrate breathability.

  3. Compatible with a broad range of water-based systems, including acrylics, styrene-acrylics, and polyurethane dispersions.

  4. Low foaming characteristics ensure smooth incorporation and processing in industrial coating and adhesive formulations.

  5. Free of APEOs (alkylphenol ethoxylates) and compliant with major global regulatory frameworks for sustainable formulations.

Typical Applications Of WACKER LIOSIL HC 303 Silicone Emulsion

  1. Water-repellent additives for architectural coatings and facade protection systems.

  2. Surface modifier in textile finishing for soft handle and durable hydrophobicity.

  3. Release aid and anti-blocking agent in paper and board coatings.

  4. Performance enhancer in construction sealants and joint fillers to improve flexibility and weather resistance.

  5. Slip and mar resistance additive in wood coatings and furniture finishes.

Specifications Of WACKER LIOSIL HC 303 Silicone Emulsion

Chemical TypeDimethyl silicone fluid emulsion (non-ionic)
Product FormAqueous emulsion
AppearanceOpaque white liquid, homogeneous and pourable
pH (1% aqueous solution, 25 °C)5.5 – 7.0
Silicone Content30 ± 1 wt.%
Viscosity (25 °C, Brookfield RV, spindle #3, 20 rpm)100 – 300 mPa·s
Particle Size (D50)0.15 – 0.30 µm
Storage Stability (unopened, 5–30 °C)≥ 12 months


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