KBM-5103
Shin-Etsu Chemical Co., Ltd. · KBM
KBM-5103 is a silane coupling agent known for its highly reactive acrylic group, making it ideal for enhancing the performance of fiber-reinforced thermosetting resins, composites, and optical fibers. It significantly improves mechanical and electrical properties in treated materials compared to similar silane agents. KBM-5103 is particularly effective in UV-cured systems, ensuring stronger adhesion and durability in a variety of industrial applications. It is widely used in reinforced plastics, coatings, and advanced material manufacturing.
- Suitable for UV applications
- Good adhesion
- Good mechanical properties
- High stability
- High performance
Specifications
Identifiers
- Chemical name
- 3-Acryloxypropyltrimethoxysilane
- CAS number(s)
- 4369-14-6
- EC number
- 419-560-6
- Molecular formula
- C9H18O5Si
- InChI key
- KBQVDAIIQCXKPI-UHFFFAOYSA-N
- Synonyms
- (3-Acryloxypropyl)trimethoxysilane, 3-(Trimethoxysilyl)propyl Acrylate, 3-(Trimethoxysilyl)propyl 2-Propenoate
Technical specifications
Properties
| Property | Value | Unit |
|---|---|---|
| Physical State | Liquid | - |
| Color | Colorless, transparent | - |
| Odor | Acryl odor | - |
| Boiling Point | 84 - 100 (at 1.5 - 3.0 mmHg) | °C |
| Melting Point | < -20 | °C |
| Flash Point | 126 (Open cup), 80 (Closed cup) | °C |
| Specific Gravity | 1.06 (at 25 °C) | - |
| Evaporation Rate | < 1 (Butyl acetate = 1) | - |
| Vapor Density | 8.1 (Air = 1) | - |
| Solubility in Water | Not soluble (Hydrolyzed with water) | - |
Specifications
| Test Condition | Specification | Value | Unit | Test Method |
|---|---|---|---|---|
| - | Appearance | Colorless, transparent | - | - |
| at 25 °C | Kinematic Viscosity | 4.5 | cSt | - |
| at 25 °C | Specific Gravity | 1.06 | - | - |
| at 25 °C | Refractive Index | 1.439 | - | - |
| - | Purity by GC | > 97 | % | - |
| - | Flexural Strength (Untreated) | 33.6 | kg/mm² | JIS K 6911 |
| - | Flexural Strength (KBM-503) | 45.4 | kg/mm² | JIS K 6911 |
| - | Flexural Strength (KBM-5103) | 50 | kg/mm² | JIS K 6911 |
- Product groups
- Silane Coupling AgentsSiliconesSilanes & Siloxanes
- Applications
- Optical fibersResinsFiller surface treatmentGlass-reinforced compositesTextile treatment chemicals
- Functions
- Coupling agentAdhesion promoterMonomerSurface modifierCuring agent
- Market segments
- Glass & opticsElectronic componentsTextile processingSpecialty chemicals
Documents
- Request a copy
Technical Data Sheet (TDS)
Specifications & performance data
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Safety Data Sheet (SDS)
Safety information & handling