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Shreebond HM-328 – Medium Reactivity HMMM Crosslinker for Durable, Low-Bake Industrial Coatings

Shreebond HM-328 – Medium Reactivity HMMM Crosslinker for Durable, Low-Bake Industrial Coatings

SHREEBOND HM-328 is a medium-reactivity hexamethoxymethyl melamine (HMMM) resin that provides an optimal balance between fast cure, film flexibility, and storage stability. It’s designed for thermosetting systems that require controlled reactivity—ideal for applications where flow, appearance, and mechanical durability are all critical.

This resin works well in both clear and pigmented systems and is especially suited for coil coatings, metal primers, automotive finishes, and general industrial paints.


Technical Specifications

  • Appearance: Clear, water-white liquid

  • Non-Volatile Content: 98–99%

  • Viscosity @ 25°C: 60–120 cps

  • Free Formaldehyde: ≤0.5%

  • Specific Gravity @ 25°C: ~1.18 g/cm³

  • Solubility: Alcohols, esters, ketones, aromatics

  • Shelf Life: 12 months in sealed containers under ambient conditions


Key Benefits

  • Moderate cure speed – ideal for improved handling and pot life

  • Forms smooth, hard, and glossy films

  • Suitable for low-bake and high-solids systems

  • Compatible with alkyd, acrylic, polyester, and epoxy resins

  • Enhanced film flexibility and storage stability

  • Reduced risk of premature crosslinking in stoved systems


Applications

  • Coil Coatings with longer flow time

  • Metal Primer and Topcoat Systems

  • Appliance Finishes and Enamels

  • Automotive OEM and Refinish Systems

  • General Industrial Coatings

Typical use level: 5–30% by weight, depending on resin compatibility and cure profile.


Packaging

  • 200 kg MS or HDPE drums

  • IBC totes / ISO tankers for bulk supply

  • Export-compliant packaging options available


Why Choose Shreebond HM-328?
If your system needs a measured reaction rate, gloss retention, and balanced flexibility, Shreebond HM-328 delivers. It’s a trusted choice for manufacturers who need consistency, smooth flow, and formulation flexibility—especially in coatings exposed to forming or variable bake cycles.