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Technical Data Sheet



Most recent revision date:          April 2008



HELOXY™ Modifier WF




Product Description


HELOXYTM Modifier WF is an aliphatic diepoxide that imparts flexibility.

The modifier is primarily used as a reactive diluent or viscosity reducer for liquid epoxy resins.




Application Areas/Suggested Uses


In blends with base resins and combination with cold or hot curing agents, HELOXYTM Modifier WF is used to produce elastic, impact – resistant molding compounds with very low water absorption and good ageing properties. The fraction of HELOXYTM Modifier WF in the blends can range from 5% to a maximum of 50 – 60%. However, higher levels or the sole use of HELOXYTM Modifier WF lead to very soft molding compounds with less desirable properties.





  • Compatible with liquid epoxy resins
  • Non-offensive odor
  • Excellent water resistance
  • Imparts high flexibility and impact resistance to epoxy systems




Sales Specification 




Test Method /


Epoxy number


10.3 – 11.3

DIN 16945

Viscosity at 25°C


50 – 90

DIN 53015



  5 max

ISO 4630







Typical Properties





Test Method /


Delivery form




Epoxy equivalent


380 – 420

DIN 16945

Hydrolyzable chlorine content


     0 – 0.50

ISO 21627-2

Refractive Index at 25ºC


1.453 – 1.457

DIN 51423

Density at 20ºC 


0.99 – 1.03

ISO 2811






Safety, Storage & Handling


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


HELOXYTM Modifier WF should be stored at room temperature in conditions such that moisture is excluded, in the original containers kept tightly closed. Under these conditions the shelf life should be a minimum of three years from the date of certification.





® 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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