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

Wacker SILRES HK 46 Silicone Resin

Wacker SILRES HK 46 is a methyl-phenyl silicone resin offering excellent thermal stability, weather resistance and electrical insulation. It cures to a hard, glossy film with low internal stress and high dielectric strength. Widely used in HIC encapsulants, LED coatings and high-temp varnishes. Soluble in aromatic and ketonic solvents. Supplied as a clear to pale yellow liquid. Meets RoHS and REACH requirements.
  • wacker silres hk 46 silicone resin_b4d5f996
  • wacker silres hk 46 silicone resin_b4d5f996

Features Of Wacker SILRES HK 46 Silicone Resin

  1. High thermal stability with continuous service up to 250 °C.

  2. Excellent electrical insulation properties even under humid conditions.

  3. Good compatibility with organic resins and pigments for hybrid formulations.

  4. Solvent-based liquid form enabling easy integration into conventional coating systems.

  5. Forms hard, abrasion-resistant, hydrophobic films upon curing.

Typical Applications Of Wacker SILRES HK 46 Silicone Resin

  1. Heat-resistant coatings for industrial ovens and exhaust components.

  2. Electrical insulation varnishes for motors, transformers, and magnet wires.

  3. Topcoats for architectural metal cladding requiring weather and UV resistance.

  4. Binders in high-performance ceramic and refractory coatings.

  5. Matrix resin in silicone-modified intumescent fire-protection systems.

Specifications Of Wacker SILRES HK 46 Silicone Resin

Chemical TypeMethyl-phenyl silicone resin
Product FormLiquid, solvent-based (xylene/toluene blend)
AppearanceClear, colorless to pale yellow liquid
Solids ContentApprox. 45–50 wt.%
Viscosity (25 °C)150–300 mPa·s (Brookfield RV, spindle #3)
Density (20 °C)0.95–0.98 g/cm³
Flash Point (PMCC)Approx. 35–40 °C
Curing BehaviorThermally cured; full crosslinking at 180–220 °C


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