… Amino-resins, phenolic resins and polyurethanes, in primary forms. …
Explanatory notes
… Amino‑resins, phenolic resins and polyurethanes, in primary forms. 3909.10 ‑ Urea resins; thiourea resins 3909.20 ‑ … This heading covers : (1) Amino‑resins These are formed by the condensation of amines or amides with aldehydes (formaldehyde, furfuraldehyde, etc.). The most important are …