X-221 Chain Extender Intermediate

• Order Code: X-221 • Type: Sulfonate Curing-Agent Intermediate • Sulfonate intermediate used to water-disperse HDI curing agents (e.g. with TPA-100) • Controllable crosslink density • Improves water and solvent resistance • Appearance: White crystalline powder • Density: 1.19 g/cm3 • Melting Point: ＞300C • Water Solubility: 9 g/100mL (20C) • Molecular Weight: 221 • Application: Water-dispersible polyisocyanate curing agent preparation; waterborne 2K PU systems