Verfahren zur kontinuierlichen Herstellung von methylenbrueckenhaltigen Polyphenylpolyaminen

摘要

In a continuous process for producing methylene-bridged poly(phenylamines), aniline and aqueous formaldehyde in a molar ratio of 4: 1-2.5 are mixed at elevated temperature in a first zone and the mixture passed to a second zone at 70-100 DEG C. where HCl is admixed to provide an HCl: aniline molar ratio of at least 1: 4. The product is stated to contain diamines, triamines and higher polymers.