HDX-50BA Fast-drying Matte PU Hardener

HDX-50BA is an aromatic polyisocyanate curing agent based on toluene diisocyanate (TDI) trimer. It serves as the hardener for fast-drying two-component polyurethane coatings, similar to Desmodur IL 1351 BA.


  • Fast-drying
  • Good matting effect
  • High hardness
  • Excellent chemical resistance


  • PU fast-drying primer
  • Satin/ Matte topcoat finish
  • High hardness varnish

HDX-50BA yeilds fast-drying systems and thus is widely used in wood furniture industry where fast drying and easy sandability is required. Featuring good matting effect, HDX-50BA is also suitable for satin or matte topcoat finish.

  • Specifications

  • Solubility

  • Storage

  • Usage

  • Packaging

Type TDI Trimer
Appearance Transparent Liquid
(Fe-Co) Color# ≤1
NCO% 7.8±0.5
Solid Content% 51±2
Free Monomer% TDI≤0.5
Viscosity (cps) 1000±500
Solubility ≥0.6

HDX-50BA exhibits excellent compatibility with esters, ketones, and ether ester solvents. It has limited solubility in aromatic solvents and is not compatible with aliphatics. Prior to usage, it is recommended to conduct stability tests in the chosen solvent and assess its impact on the coating film.

  • HDX-50BA 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  temperature (0-40°C), protected from direct sunlight and other chemical materials.
  • Shelf life is 9 months when stored in sealed packaging.
  • Solvents, pigments, or extenders used should be free from compounds containing active hydrogen groups, such as water, alcohols, or amines. It is recommended to use ‘urethane grade’ solvents with water content below 500 ppm, and aim for a ≥25% solids content after dilution.
  • To achieve optimal results, combine this product with our 75 series curing agent, with a recommended formulation ratio ranging from 5% to 50%.

Net weight:  200kg Drum or Customized

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HDX-60H TDI + HDI Non-yellowing , Fast drying , Light color & Matte finish , Excellent chemical resistance Wood & Furniture See Product
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