Vinyltriethoxysilane (VTES) Moisture Scavenger
CAS Number: 78-08-0
Vinyltriethoxysilane (VTES) is a reactive silane used as a moisture scavenger in moisture-sensitive adhesive and sealant formulations, particularly one-component polyurethane and silane-modified polymer (SMP/MS) systems. It reacts rapidly and preferentially with trace water, protecting the reactive NCO or silyl groups from premature cure during storage. VTES also acts as a crosslinker and adhesion promoter in silicone and polyolefin systems.
Technical Specifications
| purity | ≥97% |
| density | 0.903 g/cm³ |
| appearance | Colorless liquid |
| boilingPoint | 160–161 °C |
| waterContent | ≤0.05% |
Applications
- Moisture scavenger in 1K PU adhesives and sealants
- Moisture scavenger in MS/SMP polymer systems
- Crosslinker in silicone rubber compounds
- Adhesion promoter in polyolefin systems
- Water-reactive sealing in electronic packages
Key Features
- Fast reaction with water—effective moisture scavenging
- Protects moisture-sensitive reactive groups in storage
- Dual function as crosslinker and adhesion promoter
- Low volatility for safe handling
Send Inquiry
CAS Number
78-08-0
Category
Adhesive / Sealant AdditivesAvailability
In StockSample
Dispatched within 5 days
More in Adhesive / Sealant Additives
Acrylic Pressure Sensitive Adhesive
9003-01-4
Anaerobic Adhesive Monomer
868-77-9
BDMA (Benzyldimethylamine) Epoxy Accelerator
103-83-3
Bisphenol F Epoxy Resin (DGEBF)
28064-14-4
Butyl Glycidyl Ether (BGE) Reactive Diluent
2426-08-6
C12–C14 Alkyl Glycidyl Ether Reactive Diluent
68609-97-2
C5 Aliphatic Hydrocarbon Tackifier Resin
68131-77-1
C9 Aromatic Hydrocarbon Tackifier Resin
64742-16-1