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

Domestic D-12 Modified Methyltriacetoxysilane

Domestic D-12 Modified Methyltriacetoxysilane is a premium-grade silane coupling agent from Domestic’s D-Series, specifically engineered for enhanced moisture-cure performance and adhesion promotion in sealants, adhesives, and coatings. Featuring optimized acetoxyl reactivity and reduced acetic acid release, it ensures superior shelf stability and faster surface cure versus standard methyltriacetoxysilanes.
  • domestic d 12 modified methyltriacetoxysilane_22e05c64
  • domestic d 12 modified methyltriacetoxysilane_22e05c64

Features Of Domestic D-12 Modified Methyltriacetoxysilane

  1. Enhanced hydrolytic stability compared to conventional triacetoxysilanes, reducing premature gelation during storage.

  2. Improved adhesion promotion to low-surface-energy substrates including polyolefins and fluoropolymers.

  3. Lower volatility and reduced acetic acid release rate during cure, supporting safer handling and improved workplace air quality.

  4. Tailored reactivity profile for controlled crosslinking in ambient-cure silicone sealants and adhesives.

  5. High purity with minimal residual catalysts or heavy metals, ensuring compatibility in sensitive electronic encapsulation formulations.

Typical Applications Of Domestic D-12 Modified Methyltriacetoxysilane

  1. Ambient-vulcanizing (RTV-1) silicone sealants for construction and automotive glazing.

  2. High-performance adhesive primers for plastic bonding in electronics assembly.

  3. Moisture-cure polyurethane and hybrid polymer sealants requiring enhanced substrate adhesion.

  4. Surface modifiers for silica fillers in high-transparency optical gels.

  5. Adhesion promoters in powder-coating pretreatment systems for aluminum and galvanized steel.

Specifications Of Domestic D-12 Modified Methyltriacetoxysilane

Chemical TypeModified alkyltrialkoxysilane derivative (acetoxysilane-based)
Product FormClear, colorless to pale yellow liquid
AppearanceHomogeneous, free of sediment or haze
Density (25°C)1.08–1.12 g/cm³
Viscosity (25°C)3.5–5.0 mPa·s
Acid Value (as CH₃COOH)18–22 wt%
Flash Point (Tag Closed Cup)68–72°C
Storage Stability (unopened, 25°C)≥12 months


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