| 摘要 |
THE PREPARATION OF POLYAMIDES, THEIR OLIGOMERS OR MIXTURES THEREOF, WHERE APPROPRIATE WITH OTHER REACTION PRODUCTS, TAKES PLACE BY REACTING AMINO NITRILES (A) AND, WHERE APPROPRIATE. OTHER POLYAMIDE-FORMING AMONOMERS AND/OR OLIGOMERS WITH WATER (D) IN A REACTIVE DISTILLATION, WHEREIN THE REACTION PRODUCT (P) IS DISCHARGED FROM THE BOTTOM OF THE REACTIVE DISTILLATION APPARATUS, AND AMMONIA (N) WHICH IS PRODUCED AND. WHERE APPROPRIATE, OTHER LOW MOLECULAR WEIGHT COMPOUNDS WHICH ARE PRODUCED, AND WATER, ARE TAKEN OFF OVERHEAD.(FIG. 1) |
