TH72300ATH401004460ATH0401004460ATH72300ATH 72300 ATH72300 ATH 72300ATH 401004460 ATH401004460 ATH 401004460ATH 0401004460 ATH0401004460 ATH 0401004460ATH 72300 ATH72300 ATH 72300A
processo para a preparação de diamino difenil metano e poli-(diamino difenil metano), diamino difenil metano e/ou poli-(diamino difenil metano), e, processo para a preparação de metileno difenileno diisocianato e poli-(metileno difenileno diisocianato)
Process for distillatively removing dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitrating of toluene with nitrating acid