Diethanolamine → 1,4-Piperazinediethanol

Participants

Reaction Steps

170.8 g of diethanolamine (1.63 mol) is added, and after 6 hours of reaction, 30 g of water that contains 2.3 g of diethanolamine is recovered. The residual acid index is equal to 1.4 mg of KOH/g of product, and the content of N,N′-bis (2-hydroxyethyl) piperazine that is obtained by chromatographic analysis is 2.8%. 448 g of product that can be used directly as is or after dilution that is aimed at appreciably reducing viscosity so that it can be handled easily is recovered in fine.

Provenance & Evidence