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3-Isocyanatopropyltrimethoxysilane

CAS NO. 15396-00-6
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Product Name 3-Isocyanatopropyltrimethoxysilane (ICPTMS)
CAS No. 15396-00-6
Molecular Formula C7H15NO4Si
Structural Formula Structural formula of 3-Isocyanatopropyltrimethoxysilane
Appearance Colorless, transparent liquid
Purity ≥ 98%
Boiling Point (760 mmHg) 203.8 °C
Flash Point (closed cup) ≥ 77.1 °C
Color (APHA / Pt-Co) ≤ 30
Density (25 °C, g/cm³) 1.050–1.090
Refractive Index (nD25) 1.4100–1.4300
NCO Content (%) ≥ 20.07
Applications
  1. Surface treatment of inorganic, organic and metal substrates to enhance adhesion to dissimilar materials and improve overall performance.

  2. Reacts with amines, azides and phosphates to form silane coupling agents bearing urea, azide or phosphate groups.

  3. Adhesion promoter/tackifier for room-temperature vulcanized (RTV) silicone rubber to strengthen bonding to substrates.

  4. Organic polymer modifier for chemical functionalization/grafting.

  5. Crosslinker and adhesion promoter for paints and coatings.

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