HDX-175MPX Aliphatic Polyisocyanate Hardener

HDX-175MPX is an aliphatic polyisocyanate hardener / curing agents based on HDI biuret. It is used as the hardener component to formulate lightfast and weather-stable coatings.


  • Non-yellowing
  • Excellent Physical Properties
  • Excellent Weather&Chemical Resistance
  • Adhesion & Flexibility
  • Specifications

  • Solubility

  • Storage

  • Packaging

Product Specification HDX-175MPX
Type HDI biuret
Appearance Colorless to pale yellow transparent viscous liquid
Color (Hazen) <1#
NCO% 16.5±0.5
Solid content% 75±1
Free Monomer% HDI≤0.5
Viscosity/ /25℃  (CPS) 130~300
  • HDX175-MPX can be diluted with esters, ketones, glycolether acetates or with aromatic hydrocarbons. Only urethane-grade solvents should be used with water content below 500 ppm. Storage trials should always be conducted for applications.
  • Avoid using solvents that contain reactive groupsuch as water, alcohols, amines. These solvents can negatively interact with the HDI hardener and compromise its effectiveness.
  • HDX175-MPX should not be diluted to a solid content of less than 40%. It may experience turbidity or sedimentation during prolonged storage when diluted below this solid content.
  • After dilution, it is advised to have a solid content of at least 25% in the solution.

HDX-175MPX must be stored in a tightly sealed container to prevent exposure to moisture and air. The products should be placed in a cool, dry indoor environment at room temperature (15-25°C), protected from direct sunlight and other chemical materials.

Net Weight: 200KG /60KG /20KG

About Doxu

Pioneers in Specialty Chemicals

Doxu Chemical is among the global leading manufacturers of chemical raw materials for coatings and adhesives with THREE production bases since 1988. We aim to provide an extensive line of TDI / HDI / IPDI based polyisocyanates hardeners for coating formulation in various applications.

With a commitment to leading-edge technology and innovation, we always go above and beyond the industry standard to explore chemical products and applications to meet the customers’ needs.

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    Rich History & Expertise

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    Patents & IP

  • 150000

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  • 190000

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