Explanatory notes
… ‑ Other amino-resins : 3909.31 ‑ - Poly(methylene phenyl isocyanate) (crude MDI, polymeric MDI) 3909.39 ‑ - Other … as “crude MDI”, “polymeric MDI” or “poly(diphenylmethane) diisocyanate”) is an opaque, dark brown to clear, light … all polymers produced by the reaction of polyfunctional isocyanates with polyhydroxy compounds, such as, castor oil, …