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Technical Data Sheet


Issued October 2005



EPON™ Resin CS-377



Product Description

EPON™ Resin CS-377 is a 100% reactive intermediate viscosity liquid bisphenol-A based  epoxy resin modified with an aromatic glycidyl ether.  This resin is specially designed for applications requiring an intermediate viscosity and low volatility. It exhibits minimal property loss under a broad range of processing or exposure conditions.  This resin should be considered where improved handling is important for the formulated epoxy component.



Application Areas/Suggested Uses

  • Industrial floor toppings and grouts
  • High build glaze, sealer or gel coats
  • General purpose casting and wet process composites
  • Electrical encapsulation and potting compounds
  • Low VOC high solids coatings



  • Intermediate viscosity
  • Low color
  • Similar viscosity and reduced crystallization compared to EPON Resin 826
  • Good chemical resistance


Sales Specification




Test Method/Standard

Weight per Epoxide


182 – 196

ASTM D1652

Viscosity at 25°C


75 – 95




1 max.

ASTM D1544










Typical Properties




Test Method/Standard

Density at 25°C



ASTM D1475



Clear Liquid








Processing/How to use


General Information

EPON™ CS-377 is an effective resin when cross-linked or hardened with appropriate curing agents and provides superior mechanical, adhesive, electrical, and chemical resistance properties. It is compatible with and can be cured or cross-linked with a variety of curing agents depending on properties desired in the finished product and the processing conditions employed.  For ambient cure coating applications, EPIKURE™ Curing Agent 3140, 3155, 3164 and 3175 are potential curing agent candidates.  For other applications, a wide range of EPIKURE 3200 series aliphatic amine and EPIKURE 3300 series cycloaliphatic amine curing agents are available.


EPON CS-377 can also be used to fabricate high strength fiber reinforced pipes and composites. The low viscosity of the resin provides rapid wet out of a wide range of reinforcing fibers including glass, graphite and aramid. High fiber loading with low void content can be achieved with this resin. The resulting structural composites have a high ratio of strength to weight which makes them suitable for applications ranging from sporting goods equipment to aerospace structural members. Potential curing agents include polymeric acids, anhydrides, phenolic resins, the EPIKURE 9500 series products and EPIKURE W.



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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