Silico® EF 9413 Epoxycyclohexylethyl-Terminated PDMS
Silico® EF 9413 (CAS NO: 102782-98-9)Epoxycyclohexylethyl-Terminated Polydimethylsiloxane is a reactive, low-viscosity silicone with epoxy end groups. It combines PDMS flexibility and heat resistance with epoxy reactivity, making it ideal for UV curing, adhesives, electronics, and surface treatments.
Product Description
Silico® EF 9413 (CAS NO: 102782-98-9)Epoxycyclohexylethyl-Terminated Polydimethylsiloxane is a reactive, low-viscosity silicone fluid terminated with epoxycyclohexylethyl groups. Designed for use in high-performance applications, it combines the flexibility and thermal stability of PDMS with the chemical reactivity of terminal epoxy groups.
This specialized epoxy-functional PDMS is widely used in UV-curable systems, adhesives and sealants, electronic encapsulants, and surface modification, where durable bonding, weatherability, and low surface energy are critical.
Technical Specifications
| Parameter | Value |
|---|---|
| Chemical Name | Epoxycyclohexylethyl-Terminated PDMS |
| CAS Number | 102782-98-9 |
| Synonyms | DMS-EC13, Epoxy-Terminated Silicone Fluid |
| Structure | Linear PDMS with epoxycyclohexylethyl end groups |
| Appearance | Clear to pale yellow liquid |
| Viscosity @ 25 °C | 25–1,200 cSt |
| Molecular Weight | ~900–1,100 g/mol |
| Epoxy Equivalent Weight | ~500–526 g/eq |
| Epoxy Value | 1.9–2.0 eq/kg |
| Density @ 25 °C | ~0.99 g/mL |
| Refractive Index @ 20 °C | ~1.433 |
| Solubility | Soluble in hydrocarbons, esters, and ethers; insoluble in water |
| Storage Conditions | Store in sealed containers under nitrogen; keep dry and cool |
| Shelf Life | 12 months from date of manufacture (unopened) |
Product Grades and Specifications
| Grade | Molecular Weight | Viscosity @25°C | Epoxy Content (eq/100g) |
|---|---|---|---|
| EF9413 | ~900–1,100 g/mol | 25–35 cSt | 1.9–2.0 eq/kg |
| EF9417 | ~3,200–3,600 | 60–80 cSt | 0.5–0.7 eq/kg |
| EF9431 | ~40,000 | 800–1,200 cSt | 0.04–0.06 eq/kg |
Key Features & Benefits
High Epoxy Functionality – Ensures efficient crosslinking and fast curing.
Silicone Flexibility – Retains elasticity, low modulus, and softness.
UV and Thermal Stability – Suitable for use in high-temperature or light-exposed environments.
Improved Adhesion – Reacts well with organic resins, metals, plastics, and glass.
Low Surface Energy – Enhances slip, leveling, and release properties in coatings and inks.
Recommended Applications
UV-Curable Coatings & Inks
Enhances flexibility, flow, and adhesion in radiation-cured formulations.Adhesives & Sealants
Provides reactive functionality for crosslinking and bonding in hybrid or epoxy systems.Electronic Encapsulation & Potting
Offers excellent dielectric properties and long-term reliability.Surface Treatment & Modification
Acts as a reactive silicone additive for improving substrate compatibility.
Packaging & Storage
| Details | Description |
|---|---|
| Packaging | Available in 5kg, 25kg or 200kg PE drums or coated iron drums. |
| Storage | Store in a cool, dry, well-ventilated area at ambient temperature. Avoid contact with acids and bases. Shelf life: 12 months in unopened containers. |
| Transportation | Non-hazardous; handle as general chemicals. |
Disclaimer
All technical data provided is based on current knowledge and experience. Users must test product suitability for intended applications.
No warranties are expressed or implied. Silico® assumes no liability for incidental or consequential damages.
Jessica G.
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