Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Kaneka Kane Ace MX-257 Epoxy Toughener

Kaneka Kane Ace MX-257 Epoxy Toughener is a reactive liquid terpolymer modifier designed to enhance impact resistance and fracture toughness in epoxy resins without compromising Tg or processability. Developed by Kaneka Corporation, this high-performance toughener enables superior delamination resistance and crack propagation control in structural composites and advanced electronics encapsulation.
  • kaneka kane ace mx 257 epoxy toughener_5c79f007
  • kaneka kane ace mx 257 epoxy toughener_5c79f007

Features Of Kaneka Kane Ace MX-257 Epoxy Toughener

  1. Reactive liquid acrylic elastomer designed for high-efficiency toughening of epoxy resins without significant viscosity increase.

  2. Enables excellent impact resistance and fracture toughness while maintaining good thermal stability and glass transition temperature (Tg) of cured systems.

  3. Offers superior compatibility with standard DGEBA-type epoxies and facilitates phase-separated morphology upon curing for optimal energy dissipation.

  4. Low volatility and non-hazardous handling profile—no isocyanates, no volatile organic compounds (VOCs), and compliant with REACH requirements.

  5. Enables one-component formulation flexibility when pre-blended with epoxy resins, supporting simplified processing and extended pot life.

Typical Applications Of Kaneka Kane Ace MX-257 Epoxy Toughener

  1. Aerospace structural adhesives requiring high peel strength and fatigue resistance.

  2. High-performance composites for wind turbine blades and automotive lightweighting components.

  3. Electronic encapsulants and underfills demanding crack resistance and CTE matching.

  4. Precision engineering adhesives used in semiconductor equipment and optical assemblies.

  5. High-durability coatings for industrial flooring and protective linings in corrosive environments.

Specifications Of Kaneka Kane Ace MX-257 Epoxy Toughener

Chemical TypeReactive acrylic elastomer (carboxyl-terminated)
Product FormClear to pale yellow low-viscosity liquid
AppearanceHomogeneous, slightly viscous liquid at 25°C
Primary ApplicationsEpoxy resin toughening for adhesives, composites, and encapsulants
Key FeaturesReactive toughener, phase-separating morphology, Tg retention
BenefitsImproved impact strength, reduced brittleness, enhanced delamination resistance
Storage ConditionsStore in sealed containers at 5–30°C; protect from moisture and direct sunlight
Shelf Life12 months from date of manufacture under recommended storage conditions


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