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P-Toluenesulfonyl Isocyanate PTSI As Moisture Scavenger In Polyurethane Coatings

TDI MDI Polyurethane
July 17, 2025
Category Connection: TDI MDI Polyurethane
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#PU Foam Wannate Pm 200 #99.6% WANNATE MDI 50F #MDI Wannate Pm 200
Brief: Discover how P-Toluenesulfonyl Isocyanate PTSI serves as an effective moisture scavenger in polyurethane coatings. This high-reactivity mono-isocyanate prevents premature reactions and stabilizes moisture-curing materials, ensuring long-lasting performance in solvents, fillers, and pigments.
Related Product Features:
  • P-Toluenesulfonyl Isocyanate PTSI is a highly reactive mono-isocyanate used as a dehydrating agent in chemical products.
  • Acts as a moisture scavenger for solvent-based PU coatings, sealants, and adhesives.
  • Prevents premature reactions and stabilizes moisture-curing materials in PU coatings.
  • Appears as an almost colorless liquid with an NCO content of 20.0 ± 1%.
  • Molecular formula: C8H7NO3S with a molecular weight of 197.21 g/mol.
  • Packaged in 20 KGS iron drums for easy handling and storage.
  • Shelf life of 6 months when stored dry at 5 ~ 32°C.
  • Widely used in solvents, fillers, pigments, and pitch tar applications.
Faqs:
  • What is the primary application of P-Toluenesulfonyl Isocyanate PTSI?
    P-Toluenesulfonyl Isocyanate PTSI is primarily used as a dehydrating agent and moisture scavenger in chemical products, including solvents, fillers, pigments, and polyurethane coatings.
  • How does PTSI prevent premature reactions in PU coatings?
    PTSI acts as a stabilizer for moisture-curing materials, preventing undesirable premature reactions and deterioration or discoloration during storage.
  • What are the storage conditions for P-Toluenesulfonyl Isocyanate PTSI?
    PTSI should be stored dry at temperatures between 5 ~ 32°C and has a shelf life of 6 months from the production date.
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