Poly(oxy-1,4-butanediyl), alpha-hydro-omega-hydroxy-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, 2-hydroxyethyl acrylate-blocked
CAS: 82339-25-1
Category: Organic Intermediates
| Purity | Industrial polymer grade with typical non-volatile content ≥95% and controlled residual monomer leve |
| Molecular Formula | (C12H18N2O2.C5H8O3.(C4H8O)n.H2O)x (polymeric UVCB) |
| Molecular Weight | Polymeric UVCB (no single defined molecular weight |
| Appearance | Colorless to pale yellow viscous liquid or low-melting resin |
| Packaging | 200 kg steel drums or IBC totes for bulk; smaller metal drums or cans (e.g., 25 kg) for specialty/coatings applications |
| Testing Indicators | Appearance — visual inspection (color and clarity); Viscosity — rotational viscometer (e.g., Brookfield) at specified temperature; Non-volatile content (solids) — oven drying at defined conditions; NCO/blocked NCO content — titration (e.g., di-n-butylamine back-titration after deblocking); Density — pycnometer or digital density meter; Identification — FTIR (urethane and related bands); Residual monomer content — GC or HPLC as required by specification. |
| Storage Notes | Store in a cool, dry, well-ventilated area away from heat, ignition sources, and moisture. Keep containers tightly closed. Avoid contact with strong acids, bases, oxidizing agents, and reactive chemicals. Use appropriate personal protective equipment to prevent skin and eye contact, as the product can cause irritation. |
| Lead Time | 10 days |
Blocked isocyanate prepolymer used as a reactive crosslinker in polyurethane and acrylate-based coatings, adhesives, and sealants. Provides latent isocyanate functionality that can de-block under heat or curing conditions, delivering improved mechanical properties, chemical resistance, and durability in finished films.