Smart science to improve lives™
Smart Materials
  • Login | Register
Smart Materials
B-Tough™ A2
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 A2 is a reactive toughening ingredient that brings excellent stability and is recommended for use in liquid and/or solid type epoxy resins (medium polarity grade).
B-Tough A2

Product details

Chemical name

  • Functional ingredient


  • B-Tough

Features and benefits

  • Excellent toughening performance for impact resistance
  • Improved adhesion after humid ageing
  • Protect substrates from moisture diffusivity, extending life time of substrate
  • Epoxy functional toughening agent that is easy to formulate with


  • Adhesives & sealants
  • Composites

Product chemistry

  • Other - Proprietary

Functions & effects

  • Toughening

Your system

  • Polymeric - Epoxy

Renewable carbon content

  • 18%

Physical form

  • Liquid

Regulatory clearances

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

Food contact approval

  • FDA (175.105)
  • FDA (175.300)


Property Units Value
Dynamic viscosity mPa.s at 75 ºC 4000
EEW typical g/eq 376
Rubber content % 40
Would you like some help with a product?