


EPON™ elastomer-modified epoxy resins incorporate flexible elements into the polymer backbone, which toughens the thermoset system by distributing internal stress over a greater area. After full cure, a secondary “rubber toughened” phase occurs, delivering:
Hexion offers a wide variety of EPON elastomer-modified epoxy resins adducted with varying elastomer contents. Adduction improves the overall performance and shelf stability of formulated components, as compared with simple blends of resin and CTBN elastomers. Optimal rubber content in the final formulated system typically ranges from 1 to 50% by weight. These elastomer-modified epoxy resins are compatible with a variety of standard liquid epoxy resins. They are used in the formulation of toughened epoxy resin systems designed to avoid brittleness and cracking in high performance applications such as:
Elastomer-modified Epoxy Resins
Product | Typical Properties | Description | Application | |||||
---|---|---|---|---|---|---|---|---|
Resin Type | Viscocity at 25oC, P | WPE, g./eq. | Coatings | Construction | Composites | All Others(1) | ||
EPON Resin 58005 | CTBN- modified BPA epoxy | 3000 - 8000 | 325 – 375 | Epoxy resin with 40%. elastomer content. Increases peel strength, thermal shock resistance, toughness and fatigue resistance. | ||||
EPON Resin 58006 | CTBN- modified BPA epoxy | 1500 – 3000 | 330 – 360 | Epoxy resin with 40%. elastomer content and a lower acrylonitrile level than EPON 58005. Improves flexibility and fatigue resistance. | ||||
EPON Resin 58034 | CTBN -modified DGENPG | 40 - 80 | 275 - 305 | Elastomer- modified HELOXY™ 68 with 50% elastomer content. Provides a low viscosity and high toughness | ||||
EPON Resin 58901 | CTBN- modified BPA epoxy | 1000 – 5000 | 195 – 210 | Epoxy resin with 5%. elastomer content. Provides flexibility and early green strength. |
RECOMMENDED: | HIGHLY RECOMMENDED: |
(1) Other applications include adhesives, electrical castings, electrical laminates and fibers
For more information, see Starting Formulations, Technical Data Sheets, or speak with a representative.