Epoxy-Terminated Silicone Oil (Ep-PDMS)
CAS Number: 102782-97-8
Epoxy-terminated polydimethylsiloxane (Ep-PDMS) carries glycidoxypropyl epoxide groups at both chain ends. The epoxide ring reacts with amines, carboxyls, and hydroxyls under mild heat, enabling covalent bonding to fiber surfaces for wash-durable textile finishing, or integration into epoxy resin networks as a toughening modifier. EEW (350–3000 g/eq) and viscosity (50–5000 cSt) are the primary selection parameters.
Technical Specifications
| appearance | Colorless transparent liquid |
| density (g/mL, 25°C) | 0.99–1.01 |
| viscosity (cSt, 25°C) | 50–5000 (multiple grades) |
| refractive index (25°C) | 1.390–1.410 |
| epoxy equivalent weight (g/eq) | 350–3000 |
Applications
- Wash-durable textile softener/finishing (covalent bond to fiber hydroxyl groups)
- Epoxy resin toughening modifier — improves impact resistance and flexibility
- Leather surface coating intermediate (reactive with polyurethane binders)
- Reactive silicone surfactant synthesis via ring-opening with amines
- Silicone-epoxy interpenetrating network (IPN) coupling agent
Key Features
- Covalent fiber bonding gives wash durability superior to non-reactive silicone softeners
- EEW range (350–3000 g/eq) enables tuning from reactive crosslinker to flexible toughener
- Combines silicone softness and epoxide reactivity in a single molecule
- Compatible with amine, anhydride, and polyol hardeners in epoxy systems
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CAS Number
102782-97-8
Category
Silicone Specialty ChemicalsAvailability
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