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

DOW XIAMETER OFS-6403 Silane

DOW XIAMETER OFS-6403 Silane is a reactive organosilane coupling agent from Dow’s XIAMETER specialty silicone series, designed to enhance adhesion and moisture resistance in coatings, sealants, and composites through covalent bonding with both organic polymers and inorganic substrates.
  • dow xiameter ofs 6403 silane_733b3d21
  • dow xiameter ofs 6403 silane_733b3d21

Features Of DOW XIAMETER OFS-6403 Silane

  1. Reactive silane coupling agent with dual functionality: methoxy groups for hydrolytic reactivity and vinyl groups for radical polymerization compatibility.

  2. Enables strong covalent bonding between inorganic substrates (e.g., glass, silica, metals) and organic polymers.

  3. Improves dispersion stability and interfacial adhesion in filled composites and coatings without requiring harsh catalysts.

  4. Low volatility and hydrolytic stability in anhydrous formulations, supporting extended shelf life and safe handling.

  5. Compatible with common industrial processes including solvent-based coating, extrusion compounding, and RTV silicone formulation.

Typical Applications Of DOW XIAMETER OFS-6403 Silane

  1. Adhesion promoters in automotive OEM and refinish coatings for metal and composite substrates.

  2. Surface treatment of silica and glass fillers in high-performance rubber and thermoplastic composites.

  3. Functional additive in RTV-2 silicone elastomers to enhance filler-matrix interaction and mechanical durability.

  4. Primer component for optical lenses, LED encapsulants, and electronic potting compounds requiring long-term environmental resistance.

  5. Performance enhancer in waterborne and UV-curable industrial coatings for improved scratch resistance and substrate wetting.

Specifications Of DOW XIAMETER OFS-6403 Silane

Chemical TypeVinyltrimethoxysilane derivative
Product FormClear, colorless to pale yellow liquid
AppearanceHomogeneous liquid, free of visible particulates or phase separation
Primary ApplicationsAdhesion promotion, filler surface modification, reactive coupling in elastomers and coatings
Key FeaturesHydrolyzable methoxy groups, polymerizable vinyl functionality, low moisture sensitivity in sealed storage
BenefitsEnhanced composite strength, reduced filler agglomeration, improved coating adhesion on challenging substrates
Storage ConditionsStore in tightly closed containers under dry, inert atmosphere at 15–25°C
Handling PrecautionsUse in well-ventilated areas; avoid contact with skin/eyes; refer to SDS for full safety guidance


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