METHOD OF INHIBITING HYDROLYSIS OF DIMETHYLCORMAMIDE OR DIMETHYLACETAMIDE IN PROCESSES OF RECOVERY OF DIENE HYDROCARBONS BY EXTRACTIVE RECTIFICATION

摘要

FIELD: chemical industry. SUBSTANCE: present invention describes method of inhibiting hydrolysis of dimethylformamide or dimethylacetamide in process of recovery of diene hydrocarbons from C₄-C₅ hydrocarbon mixtures by extractive rectification with morphaline derivatives with unsaturated carbonyl compounds or with mixture thereof with morpholine. Weight ratio of morpholine to reaction product thereof with carbonyl component varies from 0.1-99.9 to 99.9-0.1 wt.-%. Optimum dosage of inhibitor is 0.1 to 5.0 wt % per extracting agent. Addition of morpholine and/or products of reaction of morpholine with unsaturated carbonyl compounds increases efficiency of inhibition of hydrolysis of extracting agents. EFFECT: more efficient inhibition method. 1 tbl