DXTB-65 Solvent Based TDI Blocked Polyisocyanate

DXTB-65 is a solvent-based blocked aromatic polyisocyanate crosslinking agents based on TDI. It is used as the hardener component to formulate one-component (1K) polyurethane coatings.


  • Excellent compatibility
  • Temperature resistance
  • Chemical resistance
  • Stable storage

Single-component polyurethane stoving coating, commonly used as an additive in drying systems to improve flexibility and adhesion. Can also be used in textile coatings, crosslinking agents for printing adhesives, etc.

  • Specifications

  • Solubility

  • Storage

Type Solvent-Based TDI Blocked
Appearance Colorless to pale yellow transparent viscous liquid
Solid Content% 65±2
Valid NCO % 8±0.3
Free Monomer % ≤0.2
Viscosity/ /25℃  (CPS) 8000±2000
Deblocking Temp. ℃ 130-140
  • DXTB-65 can be diluted with ketones, esters, ethers and aromatic compounds.
  • DXTB-65 can be mixed with various plasticizers (such as phosphoric acid, sulfonic acid, adipic acid and phthalate). It’s recommended to conduct compatibility testing for the mixture to ensure optimal performance.

DXTB-65 should be stored in tightly sealed original containers in a cool and well ventilated place, protected from moisture, heat, and foreign materials.

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

    Annual Production Capacity

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