| 摘要 |
Condensation products of epsilon -caprolactam, formaldehyde and formamide, especially N-(formylaminomethyl)- epsilon -caprolactam and N-(N'-formyl-N'-hydroxymethyl-aminomethyl)- epsilon -caprolactam, are prepared by reacting formamide and formaldehyde in the presence of a base and in the presence or absence of epsilon -caprolactam at temperatures of 70 DEG to 90 DEG C. for 4 to 15 hours, then acidifying the reaction batch and, if no epsilon -caprolactam is present, adding epsilon -caprolactam, and distilling off water at 100 DEG to 135 DEG C. The condensation products are valuable modifiers for use in the manufacture of aminoplast resins employed for impregnating paper and fabrics which are used for the manufacture of coated wood-based materials and laminates.
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