Chain Extender

• Order Code: DMSE • Type: Sulfonate Hydrophilic Chain Extender • Chemical Name: Sodium diamino propane sulfonate • Sulfonate-type chain extender imparting hydrophilicity in waterborne PU synthesis • Higher hydrophilicity than carboxylate DMPA for more effective water dispersion • Produces PU dispersions with smaller particle size and higher stability • Improves water, solvent and yellowing resistance • Appearance: High-viscosity transparent slightly-yellow liquid • Viscosity (25C): 10000 +-2000 mPa.s • Purity: 98% • Molecular Weight: approx 660 • Acid Value (25C): approx 170 +-5 • Solubility: Water, ethanol, N-methylpyrrolidone • Application: Waterborne polyurethane dispersion synthesis; PU coatings and adhesives; textile and leather coatings; high-performance waterborne PU resins

• Order Code: DMP • Type: Blocking Agent for Blocked Isocyanate Crosslinkers • Chemical Name: 3,5-Dimethylpyrazole (DMP) • Highly efficient blocking agent for blocked-isocyanate crosslinkers • Low deblocking temperature (115-120C), far below MEK-oxime and caprolactam • Low toxicity and eco-friendly (boiling point 218C) • Inert in finished coatings, minimal off-gassing during baking • Ideal for high-solids waterborne coatings and internally-plasticized curing agents • Appearance: White crystalline powder • Purity: 99.9% • Melting Point: 109C • Moisture: 0.16% • Molecular Weight: 96.13 • Molecular Formula: C5H8N2 • Application: Isocyanate-crosslinked waterborne coating systems; low-temperature bake blocked curing agents; pyrazole coordination compounds

• Order Code: CA-95 • Type: Phosphate Chain Extender for Waterborne PU • Chemical Name: Waterborne polyurethane phosphate chain extender • Brand: Repsol • Introduces phosphate groups to impart flame retardancy and water dispersibility to PU • Controllable crosslink density • Improves water and solvent resistance • Appearance: White solid / powder • Purity: ≥92 +-1% • Moisture: ≤0.4% • Application: Waterborne polyurethane synthesis; flame-retardant water-dispersible PU resins; coatings and adhesives

• Order Code: DMPA • Type: Hydrophilic Chain Extender for Waterborne PU • Chemical Name: Dimethylolpropionic Acid (DMPA) • CAS: 4767-03-7 • Molecular Weight: 134.13 • Brand: Perstorp • Hydrophilic chain extender for waterborne polyurethane dispersions (PUD) • Controllable crosslink density • Improves water and solvent resistance • Appearance: White crystalline powder • Purity: ≥99% • Melting Point: 189-192C • Moisture: ≤0.5% • Ash: ≤0.1% • Application: Waterborne polyurethane (PUD) synthesis; coatings, adhesives and inks

• Order Code: DMBA • Type: Hydrophilic Chain Extender for Waterborne PU • Chemical Name: Dimethylolbutanoic Acid (DMBA) • CAS: 10097-02-6 • Molecular Weight: 148.16 • Brand: Repsol • Hydrophilic chain extender for waterborne polyurethane (upgraded DMPA alternative with better solubility) • Controllable crosslink density • Improves water and solvent resistance • Appearance: White crystalline powder • Purity: ≥99% • Melting Point: 126-130C • Moisture: ≤0.3% • Application: Waterborne polyurethane (PUD) synthesis; coatings and adhesives

• 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

• Order Code: X-106 (DETDA / E100) • Type: Chain Extender for Polyurethane • Chemical Name: Diethyltoluenediamine (DETDA, E100) • CAS: 68479-98-1 • Aromatic diamine chain extender for PU elastomers and coatings • Fast cure, excellent mechanical properties • 3,5-Diethyltoluene-2,4-diamine: 75.0-81.0% • 3,5-Diethyltoluene-2,6-diamine: 18.0-20.0% • Moisture: ≤0.1% • Appearance: Light yellow to light brown clear liquid • Molecular Weight: 178.28 • Density (20C): 1.02 g/cm3 • Flash Point (TCC): ＞135C • Viscosity (25C): 155 cps • Application: Polyurethane elastomer chain extender; RIM; epoxy curing agent; cast PU

• Order Code: DMSQ • Chain Extender / Dispersant for Waterborne Polyurethane • Molecular weight (g/mol): 430 ± 10 (GPC) • Appearance: High-viscosity transparent pale yellow liquid • Viscosity (cPs/20°C): 50,000 ± 5,000 • Purity (%): 98 (NMR) • Moisture (%): ≤1.0 • VOC (%): ≤1.0 • Chain extender and internal emulsifier for high-solid-content waterborne polyurethane dispersions • Suitable for solvent-free waterborne polyurethane resins, improving water, hydrolysis and solvent resistance • Recommended dosage: 3 - 7% of total solids, adjusted according to the formulation

• Order Code: X-107 (DMTDA / E300) • Type: Chain Extender for Polyurethane • Chemical Name: Dimethylthiotoluenediamine (DMTDA, E300) • Eco-friendly aromatic diamine chain extender for PU elastomers • Slower reactivity than DETDA, suited to thick/large cast elastomers • Excellent mechanical, temperature and chemical resistance • Appearance: Light yellow transparent liquid • Application: Polyurethane elastomer chain extender; epoxy curing agent; RIM; rubber rollers and industrial rollers