PROCESS FOR THE HYDROLYSIS OF ADIPONITRILE AND THE PRODUCTION OF NYLON 6,6 USING DICARBOXYLIC ACIDS AS THE SOLE CATALYST

摘要

A process for the hydrolysis of a dinitrile (e.g., adiponitrile) utilizing a dicarboxylic acid (e.g., adipic acid) as the sole catalyst followed by addition of a diamine (e.g., hexamethylenediamine) and heating to produce polymerization. Such a process is particularly useful in the production of nylon 6,6 having a low BHMT content and improved melt stability.