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-6300 Silicate Coupling Agent

  1. Interfacial Reinforcement - Vinyl groups copolymerize with resins; methoxy links to fillers/glass fibers, optimizing stress transfer

  2. Process Efficiency - Low viscosity (0.56 cSt at 25°C) ensures homogeneous dispersion in formulations

  3. Durability - Enhances UV/aging resistance in coatings (salt spray resistance >1,000 hours)

  4. Multi-Matrix Compatibility - Works with acrylic, epoxy, and polyurethane resin

Typical Applications Of Dow Corning OFS-6300 Silicate Coupling Agent

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

  2. FRP Composites - Glass fiber sizing for automotive/construction parts (30% strength increase)

  3. Industrial Coatings - Metal primers with enhanced corrosion resistance

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

Specifications Of Dow Corning OFS-6300 Silicate Coupling Agent

Chemical Name
Vinyltrimethoxysilane
Appearance
Colorless to light yellow transparent liquid
Molecular Weight
148.23
Specific Gravity (25/25℃)
0.968 g/mL
Boiling Point
123℃
Flash Point (Closed Cup)
22℃
Active Content
99%
Viscosity (25℃)
0.56 cSt
Compatible Diluents
Alcohols and water
Packaging
20KG/drum


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