Polyamide epoxy curing agent with Ultra-High Adhesion, Bonding Strength, and Flexibility

Kabasph® KBPE-5305 is a high-performance polyamide epoxy curing agent featuring a broad compatibility range with epoxy resins. The cured system exhibits excellent color stability, superior toughness, strong adhesion, and outstanding resistance to chemicals and water. When combined with epoxy resins, it delivers an exceptional balance of adhesion and flexibility — making it the reliable choice for marine, steel, container, flooring, and other demanding environments. Our KBPE-5305 is analogous to Wansheng 4115.

Technical Specifications

Curing Characteristics

Key Features

• Superior Adhesion & Flexibility
  The molecular structure of KBPE-5305 is rich in polar groups, providing outstanding wetting and adhesion to diverse substrates including metal, concrete, glass, wood, and tile. Cured films maintain excellent flexibility, effectively resisting stress caused by substrate expansion and contraction — a critical advantage in dynamic service conditions.
• Excellent Impact & Bonding Strength
  Coatings formulated with KBPE-5305 exhibit high impact resistance, resisting cracking and delamination under mechanical shock or continuous vibration. This makes it particularly suitable for challenging applications such as ship ballast tanks and bridge steel structures.
• Wide Mix Ratio & Extended Pot Life
  The product offers high formulation flexibility, accommodating various mix ratios with different epoxy resin grades. The extended pot life provides applicators with ample working time — a key advantage for large-scale coating projects.
• Superior Substrate & Filler Wetting
  KBPE-5305 effectively wets a wide range of pigments, fillers, and substrates, enabling formulators to achieve higher Pigment Volume Concentration (PVC) and optimize formulation costs without compromising film integrity.

Applications

Heavy-Duty Anti-Corrosion Coatings

Marine & offshore coatings

Steel structure primers and midcoats

Container coatings

Industrial vehicle coatings

Epoxy flooring systems

Coal tar epoxy systems

Structural Bonding & Repair

Room-temperature bonding of stone, metal, glass, concrete, tile, and wood

Composite material repair

Storage & Packaging