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 stoving coatings. Similar to DesmodurBL 1265/1 MPA/X.

Features

  • 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. Only PU grade solvents should be used.
  • 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 and protected from moisture, heat, and foreign materials. The shelf life is around 12 months when stored in a sealed package.

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