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Technical Data Sheet


Re-issued September 2001



EPON™ Resin 834



Product Description

EPON™ Resin 834 is a BPA based epoxy resin that is semi-solid at room temperature. Systems using EPON Resin 834 can be formulated to be useful in a variety of high solids and tar modified coatings, high toughness adhesives, laminating, and prepreg molding materials. Because of its higher molecular weight, EPON Resin 834 provides enhanced system reactivity, surface tack and cured resin toughness in comparison to liquid grade BPA epoxies, but reduces elevated temperature performance. EPON Resin 834 is especially useful in applications requiring extra surface tack, cure speed or toughness but cannot tolerate additives or modifiers.



  • May be blended with other epoxy resins.
  • Semi-solid at room temperature, pourable at slightly elevated temperatures.
  • May be used to produce 10 to 15 mil films with high adhesion.
  • Improved toughness, tack and cure speed over unmodified liquid epoxies


Sales Specification




Test Method/Standard

Weight per Epoxide


235 – 263

ASTM D1652

Viscosity at 25°C 1


2.1 - 2.4




 200 max.

ASTM D1209





1 40% solution in methyl ethyl ketone


Typical Properties




Test Method/Standard

Density at 25°C



ASTM D1475







Processing/How to use


General Information


A wide variety of curing agents can be used with EPON Resin 834, including aliphatic amines, amidoamines, amine adducts, polyamides, and cycloaliphatic amines. EPON Resin 834 is amenable to formulation of high solids coatings, adhesives, and prepregs due to its moderate molecular weight, film forming ability, and inherent toughness. It is especially useful as a base resin in adhesives, sealants, potting and encapsulation. With gentle heating, EPON Resin 834 can be handled like liquid BPA epoxies. Generally temperatures of 140° to 160 °F are adequate to ease dispensing and mixing. After mixing, many formulations may be at usable viscosties at room temperature, since many curing agents and additives will lower system viscosities. In coating applications, EPON Resin 834 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.


Safety, Storage & Handling

Please refer to the MSDS for the most current Safety and Handling information.


Please refer to the Hexion web site for Shelf Life and recommended Storage information.


Exposure to these materials should be minimized and avoided, if feasible, through the observance of proper precautions, use of appropriate engineering controls and proper personal protective clothing and equipment, and adherence to proper handling procedures. None of these materials should be used, stored, or transported until the handling precautions and recommendations as stated in the Material Safety Data Sheet (MSDS) for these and all other products being used are understood by all persons who will work with them. Questions and requests for information on Hexion Inc. ("Hexion") products should be directed to your Hexion sales representative, or the nearest Hexion sales office. Information and MSDSs on non-Hexion products should be obtained from the respective manufacturer.



Available in bulk and drum quantities.



Contact Information

For product prices, availability, or order placement, please contact customer service:


For literature and technical assistance, visit our website at:

® and ™ Licensed trademarks of Hexion Inc.


The information provided herein was believed by Hexion Inc. (“Hexion”) to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product and to determine the suitability of the product for its intended use. All products supplied by Hexion are subject to Hexion’s terms and conditions of sale. HEXION MAKES NO WARRANTY, EXPRESS OR IMPLIED, CONCERNING THE PRODUCT OR THE MERCHANTABILITY OR FITNESS THEREOF FOR ANY PURPOSE OR CONCERNING THE ACCURACY OF ANY INFORMATION PROVIDED BY HEXION, except that the product shall conform to Hexion’s specifications. Nothing contained herein constitutes an offer for the sale of any product.

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