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

Dow Corning OFS-6403 Hydrophobicity Silicate Coupling Agent

Dow Corning OFS-6403 (isobutyltriethoxysilane) is a hydrophobic silane coupling agent that enhances adhesion and waterproofing in coatings and composites. Its small molecular structure enables deep penetration into concrete and metals, forming durable siloxane crosslinks for >90% wet adhesion retention. Ideal for high-transparency concrete and anti-corrosion coatings, it complies with REACH/RoHS and reduces VOC emissions (423 g/L). Applications include waterproof coatings, FRP composites, and cable insulation

Features Of Dow Corning OFS-6403 Hydrophobicity Silicate Coupling Agent

  1. Deep Substrate Penetration - Small molecule design ensures thorough infiltration for long-lasting hydrophobicity

  2. Interfacial Bonding - Ethoxy groups react with inorganic surfaces; alkyl chains enhance polymer compatibility

  3. Process Efficiency - Low viscosity (0.880 g/cm³) facilitates uniform dispersion in formulations

  4. Multi-Substrate Versatility - Effective on concrete, metals, and polyolefins

Typical Applications Of Dow Corning OFS-6403 Hydrophobicity Silicate Coupling Agent

  1. FRP Composites - Glass fiber sizing for automotive parts (30–50% strength increase)

  2. Wire Insulation - Crosslinked polyethylene cables with improved dielectric properties

  3. Industrial Coatings - Metal primers with enhanced corrosion resistance

  4. Adhesives - Acrylic formulations with 0-level adhesion (ASTM D3359)

Specifications Of Dow Corning OFS-6403 Hydrophobicity Silicate Coupling Agent

Chemical Name
Isobutyltriethoxysilane
Appearance
Transparent
Density (25℃)
0.88 g/cm³
Flash Point (Closed Cup)
62℃
Molecular Weight
220 g/mol
Purity
98%
Shelf Life
720 days
VOC Content
423 g/L
Packaging
20KG/drum


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