Ammonia → Isophorone diamine

Participants

Reaction Steps

A solution containing 15 wt. % of IPN, 30 wt. % of ammonia and 55 wt. % of methanol was produced and stirred in a pressure vessel under the pressure obtained for 24 h at 25° C.; in this case isophorone nitrile (IPN) was converted largely into isophorone imino nitrile (IPIN). This solution was then pumped at 400 ml/h, corresponding to an LHSV value of 2 h-1, through the reactor, which was filled with 160 ml of hydrogenation catalyst according to the invention (as in Example 1) and 40 ml of inert steel balls. According to the analysis of the product mixture a yield of 92.1% of IPDA was obtained. After distillation of the product mixture a product purity of 99.78% IPDA was obtained.

Provenance & Evidence