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B-Tough™ A3

Our epoxy functional toughening technology brings impact strength to structural resins and adhesives without impacting the hardness of the matrix. It enhances durability by absorbing microcracks caused by ageing and thermal shock. B-Tough A3 is a reactive toughening ingredient that brings excellent stability and is recommended for use in liquid and/or solid type epoxy resins (high polarity grade).
B-Tough™ A3
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Product details

Chemical name

  • Functional ingredient


  • B-Tough

Features and benefits

  • Excellent tougehing performance for impact resistance
  • Improved adhesion after humid ageing
  • Protect substrates from moisture diffusivity, extending life time of substrate
  • Easy to formulate with


  • Adhesives & sealants
  • Composites

Product chemistry

  • Building blocks - Proprietary

Functions & effects

  • Toughening

Your system

  • Polymeric - Epoxy

Renewable carbon content

  • 15%

Physical form

  • Liquid

Regulatory clearances

  • REACH (European Union)
  • ENCS (Japan)
  • TSCA (USA)
  • More clearances available. Contact us for more information.

Food contact approval

  • EU 10/2011
  • FDA (175.105)
  • FDA (175.300)


Property Units Value
Dynamic viscosity mPa.s at 75 ºC 4000
EEW typical g/eq 380
Rubber content % 40

Product brochures & guides

Category: Data sheet

Title: B-Tough A3 TDS

Language: English | Size: 252.46kb

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