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Home » Product Center » Water-based polyurethane (PUD)

Definition of water-based polyurethane (PUD)

  1. An environmentally friendly polyurethane material with water as the dispersion medium forms a stable emulsion by dispersing polyurethane polymers in water.
  2. Preparation method
  • Prepolymer method: First synthesize NCO-capped prepolymer containing hydrophilic groups, then disperse in water and extend the chain.
  • ​Acetone method: Complete the reaction in acetone, then add water to disperse and remove the solvent.
  • ​​​Melt dispersion method: solvent-free high-temperature synthesis, suitable for specific systems.

General characteristics of water-based polyurethane (PUD)

  • Environmental friendly
  • Chemical resistance
  • Film-forming
  • Compatibility

Advantages of PUD

  • Excellent environmental protection

    Using water as the dispersion medium, the volatile organic compounds (VOC) content is extremely low, complying with the EU REACH, China GB/T 23986 and other environmental protection regulations.

  • Adjustable flexibility

    By adjusting the polyol type (polyether/polyester) and crosslinking degree, different materials from soft elastomers to hard plastics can be produced.

  • Suitable for a variety of materials

    Wood, metal, plastic, inorganic and other substrates composite PVC, film, fabric, CPL, veneer, metal

  • Strong compatibility and complexity
    Easy to blend with acrylic emulsions, epoxy resins, etc., and develop composite high-performance materials (such as enhanced corrosion resistance and weather resistance).
  • Good chemical resistance​
    Unmodified products already have basic chemical resistance, and the solvent resistance can be further improved by introducing crosslinking agents or hydrophobic groups.
  • Low unit cost
    Glue coating volume saves competition among brands, and end customer revenue

PUD application market

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