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Westlake Epoxy
Epikure Curing Agent 3300
- EPIKURE™ Curing Agent 3300 is a very low viscosity, light colored cycloaliphatic amine curing agent for use in formulating heat cured epoxies.
- Isophorone diamine can be blended with other amine-based hardeners or with epoxy accelerators to achieve ambient curable epoxy compositions.
- As a sole curing agent, EPIKURE Curing Agent 3300 can yield epoxy systems with relatively high heat distortion properties when properly cured.
Identification
Chemical Name:
Isophorone DiamineFunctionality
System:
Epoxy Systems (Resin & Curing Agent)Function Description:
- A cycloaliphatic amine curing agent that reacts with epoxy (epoxide) groups to form a crosslinked thermoset network
- used to cure heat- and ambient-cured epoxy systems, providing structural integrity, thermal resistance and chemical resistance in laminates, coatings and castings.
Applications & Uses:
Used as an amine curing agent in epoxy formulations for laminates, high-build glazes, sealers, gel coats, light-colored castings, heat-curable binders for textiles, composite matrices, adhesives and other epoxy-based coatings and molded parts. Employed where low viscosity, low color and high heat/distortion resistance are required.Benefits:
- Low viscosity for easy handling and mixing
- low color for light-colored castings and coatings
- high purity and defined amine value allow precise formulation and consistent cure
- yields cured systems with high Tg and good heat deflection
- suitable for laminates, gel coats, castings and heat-curable textile binders.
Performance Attributes:
- Very low viscosity (12–19 cP) for easy processing and blendability
- high amine value (630–670 mg/g) and high purity (≥99.5%) for consistent stoichiometry and performance
- enables epoxy systems with high Tg and high heat deflection temperatures (e.g., HDT up to 146 °C in tested formulations)
- demonstrates good tensile properties, hardness and chemical resistance in cured systems.
Brand:
EpikureManufacturer:
Westlake EpoxyProperties:
| Amine Value as KOH: | 630 - 670 mg/g * Test Method: ASTM D2896 |
|---|---|
| Purity: | 99.5 min. % m/m * Test Method: GC |
| Viscosity at 25°C: | 12 - 19 cP * Test Method: ASTM D2196 |
| Water: | 0.5 max. % m/m * Test Method: ASTM E1064 |
| Density: | 7.7 lbs/gal * Test Method: ASTM D1475 |
| Equivalent Weight Approx.: | 43 |
| Gel Time, 100 gram mass (with EPON Resin 828 / 161 / 862): | A: 128 min * B: 110 min * C: 115 min |
| Cure Schedule (example with EPON Resin 828/161/862): | 90 min / 180°F (82°C) + 90 min / 300°F (150°C) |
| Heat Deflection Temperature (A/B/C): | A: 146 °C * B: 133 °C * C: 117 °C |
| Tg (A/B/C): | A: 148 °C * B: 154 °C * C: 134 °C |
| Tensile Strength (A/B/C): | A: 11,710 psi * B: 11,400 psi * C: 11,032 psi |
| Tensile Elongation (A/B/C): | A: 7.1 % * B: 4.0 % * C: 8.3 % |
| Tensile Modulus (A/B/C): | A: 400 ksi * B: 450 ksi * C: 450 ksi |
| Hardness (Shore D) (A/B/C): | A: 87 * B: 87 * C: 89 |
| Weight loss, 24 hrs at 150°C (A/B/C): | A: 0.5 % * B: 0.8 % * C: 0.7 % |
| Water absorption (%) after immersion 24 hrs (A/B/C): | A: 0.2 % * B: 0.2 % * C: 0.1 % |
| Gel Time, 100 gram mass (EPON 8111 with EPIKURE 3300): | A: 53 min * B: 53 min |
| Cure Schedule (EPON 8111 examples): | A: 7 days at RT * B: 1 day at RT + 2 hrs at 100°C |
| Tg (EPON 8111 A/B): | A: 55 °C * B: 100 °C |
| Tensile Strength (EPON 8111 A/B): | A: 8,685 psi * B: 8,975 psi |
| Tensile Elongation (EPON 8111 A/B): | A: 2.5 % * B: 8.5 % |
| Tensile Modulus (EPON 8111 A/B): | A: 520 ksi * B: 470 ksi |
| Hardness (1 day) (A/B): | A: 45 Shore D * B: 85 Shore D |
| Hardness (7 days) (A/B): | A: 83 Shore D * B: --- |
| Water chemical resistance (%) (24 hr / 7 day / 28 day) (A/B): | 24 hr: A 0.1 % / B 0.1 % * 7 day: A 0.3 % / B 0.4 % * 28 day: A 2.2 % / B 0.7 % |
| 5% Acetic Acid chemical resistance (%) (24 hr / 7 day / 28 day) (A/B): | 24 hr: A 13.7 % / B 0.4 % * 7 day: A Destroyed / B 1.1 % * 28 day: A --- / B 2.3 % |
| 50% Xylene / 25% Isopropanol chemical resistance (%) (24 hr / 7 day / 28 day) (A/B): | 24 hr: A 11.1 % / B 0.1 % * 7 day: A 21.2 % / B 0.4 % * 28 day: A 27.7 % / B 1.3 % |
| Hardness, 28 days Durometer D (various compositions): | Examples shown in tables (values vary by composition * e.g., 84–85 Durometer D in select cures) |
Specifications:
| Amine Value as KOH: | 630 - 670 mg/g * Test Method: ASTM D2896 |
|---|---|
| Color: | 250 max. Pt-Co * Test Method: ASTM D445 |
| Purity: | 99.5 min. % m/m * Test Method: GC |
| Viscosity at 25°C: | 12 - 19 cP * Test Method: ASTM D2196 |
| Water: | 0.5 max. % m/m * Test Method: ASTM E1064 |
Storage Type:
| * Storage: | Maintain a nitrogen blanket on the head space of opened or in‑use containers * follow MSDS and Westlake Epoxy storage recommendations. |
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| Country of Availability: | USA |
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