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

Tokuyama REOLOSIL PM-20L Hydrophobic Fumed Silica

Tokuyama REOLOSIL PM-20L is a hydrophobic fumed silica imported from Japan, surface-modified with polydimethylsiloxane. It features strong hydrophobicity, high thixotropy and excellent rheological stability, specially designed for polar solvent systems like epoxy, polyurethane and vinyl ester resins.

Features Of Tokuyama REOLOSIL PM-20L Hydrophobic Fumed Silica

  1. Strong hydrophobicity & hydrolysis resistance – silicone-modified, moisture-proof for outdoor applications

  2. Excellent polar system compatibility – suitable for epoxy, polyurethane and vinyl ester resins

  3. Efficient rheology control – form 3D structure quickly, prevent sagging and settling

  4. Ultra-high purity – low metal ions, ideal for LED and electronic encapsulation

  5. Easy dispersion – fluffy powder without agglomeration, easy to add and mi

Typical Applications Of Tokuyama REOLOSIL PM-20L Hydrophobic Fumed Silica

  1. Industrial paints & coatings – thickening & anti-settling for polar systems

  2. Printing inks – enhance thixotropy and dispersion for better printing effect

  3. Sealants & adhesives – thickening and reinforcement, improve bonding strength

  4. LED & electronic materials – high purity for encapsulation with good insulation

  5. Organic elastomers – efficient reinforcement for better mechanical properties

Specifications Of Tokuyama REOLOSIL PM-20L Hydrophobic Fumed Silica

BrandTokuyama (REOLOSIL Series)
Product TypeHydrophobic Fumed Silica
AppearanceFluffy white powder
SiO₂ Content≥99.8%
BET Surface Area80–120 m²/g
Carbon Content5.5%
pH Value (4% suspension)5.2
Moisture Content<0.5%


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