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On January 31, 2021, Hexion Holdings Corporation announced that it has completed the sale of its Coatings and Composite businesses, which includes the epoxy specialty resins and base epoxy resins and intermediates product lines, to Westlake Chemical Corporation. For epoxy coatings and composite product inquiries, please contact customer service at or

HELOXY™ Modifier BD


HELOXYTM Modifier BD is a diglycidyl ether of 1,4-butanediol.

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


  • Reduces viscosity while maintaining most cured state properties
  • Improves wetting characteristics
  • Facilitates air release


Sales Specification

Property Standard Value Unit Test Method
Color ISO 6271 100 Hazen
Epoxy Equivalent 124 - 137 g/equivalent DIN 16945
Epoxy Number 31.5 - 34.5 % DIN 16945
Epoxy Value 0.73 - 0.8 equivalent/100g DIN 16945
Hydrolyzable Chlorine Content ISO 21627-2 0.3 %
Refractive Index at 25°C 1.458 - 1.464 DIN 51423
Viscosity at 25°C 10 - 20 mPa·s DIN 53015

Typical Properties

Property Standard Value Unit Test Method
Delivery Form liquid
Density at 20°C ISO 2811 1.1 - 1.12 kg/L

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