3909 Amino-resins, phenolic resins and polyurethanes, in primary forms

3909 (01/1988-..) Amino-resins, phenolic resins and polyurethanes, in primary forms 39091000 (01/1988-..) Urea resins and thiourea resins, in primary forms 39092000 (01/1988-..) Melamine resins, in primary forms 39093000 (01/1988-12/2016) Amino-resins, in primary forms (excl. urea resins, thiourea resins and melamine resins) 39093100 (01/2017-..) Poly`methylene phenyl isocyanate` `crude MDI, polymeric MDI`, in primary forms 39093900 (01/2017-..) Amino-resins, in primary forms (excl. urea, thiourea and melamine resins and MDI) 39094000 (01/1988-..) Phenolic resins, in primary forms 39095000 (01/1988-12/1996) Polyurethanes, in primary forms 39095010 (01/1997-..) Polyurethane of 2,2'-`tert-butylimino`diethanol and 4,4'-methylenedicyclohexyl diisocyanate, in the form of a solution in N, N-dimethylacetamide, containing by weight >= 50% of polymer 39095090 (01/1997-..) Polyurethanes in primary forms (excl. polyurethane of 2,2'-`tert-butylimino`diethanol and 4,4'-methylenedicyclohexyl diisocyanate, in the form of a solution in N, N-dimethylacetamide)