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EPON 872
A Chemically Modified BPA Based Epoxy Resin That is Semi-Solid At Room Temperature, May Be Blended With Other Epoxy Resins
EPON 872 is a chemically modified BPA based epoxy resin that is semi-solid at room temperature. Systems using EPON 872 can be formulated with other EPON Resins, HELOXY™ Modifiers, or used as the sole resin to provide varying degrees of flexibility and toughness. EPON Resin 872 can be used with all curing agents. EPON 872 provides cured resin toughness and flexibility in comparison to liquid grade BPA epoxies, but reduces elevated temperature performance. EPON Resin 872 is especially useful in applications requiring extra resistance to thermal shock or impacts.
Benefits
- May be blended with other epoxy resins
- Semi-solid at room temperature, pourable at mildly elevated temperatures
- May be used to produce potting and encapsulants of high thermal shock resistance
- Improved toughness and flexibility over unmodified liquid epoxies
Sales Specification
| Property | Units | Value | Test Method/Standard |
| Weight per Epoxide | g/eq | 625 – 725 | ASTM D1652 |
| Viscosity at 25°C | P | 15-38 | ASTM D445 |
| Color | Gardner | 10 max. | ASTM D1544 |
Typical Properties
| Property | Units | Value | Test Method/Standard |
| Density at 25°C | lb/gal | 9.0 | ASTM D1475 |
General Information
A wide variety of curing agents can be used with EPON Resin 872, including aliphatic amines, amido amines, amine adducts, polyamides, and cyclo-aliphatic amines. EPON Resin 872 is amenable to formulation of coatings, pottings, and encapsulants due to its inherent toughness and flexibility. Other uses include tooling, dies, and adhesives. With mild heating, Can be handled like liquid BPA epoxies. Generally temperatures of 160° to 180 °F are adequate to ease dispensing and mixing. After mixing, many formulations may be at usable viscosities at slightly above room temperature, since many curing agents and additives will lower system viscosity. In coating applications, EPON Resin 872 may be initially incompatible with the curing agent used. As the chemical reaction between the two proceeds, compatibility develops. Using the system too soon after mixing can result in “blushing” or other film defects. Blushing can often be prevented by using an induction period to allow compatibility to develop before applying the coating. Required induction periods will differ with each resin system.
Miller-Stephenson is an EPON 872 Supplier and certified from Hexion for direct distribution, technical support, and formulation modifications. For Technical Service Question please click here
Krytox™ is a trademark of The Chemours Company FC, LLC.
The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.