Production process of monoethanolamine borate

Abstract

The invention discloses a production process of monoethanolamine borate, which comprises the following steps of: inferring the production amount of the monoethanolamine borate by adjusting each link in the production process of the monoethanolamine borate and collecting and monitoring the content of water in the product, so that the reaction product monoethanolamine borate is in reasonable purity.The alkali reserve amount applied to the metal working fluid in the later period can be achieved, and the situation that reactants crystallize due to too high purity, and later use is affected is avoided.

Description

technical field [0001] The invention relates to the field of organic synthesis, in particular to a production process of monoethanolamine borate. Background technique [0002] Due to its special chemical properties, the physical properties of monoethanolamine borate are solid white powder at normal temperature and pressure, and because there are both Lewis acid receptors and Lewis base receptors in the molecule, it is stable in water at normal temperature and pressure. The solubility is low, which is very unfavorable for industrial production. Borate esters are commonly used as rust inhibitors, alkali reserve agents, and lubricants in metalworking fluids. Since the raw material boric acid is a mineral acid, it cannot be utilized by organisms, so the boric acid ester produced from it has an irreplaceable role as an alkali storage agent. The monoethanolamine borate produced by the reaction of monoethanolamine and boric acid, due to its low molecular weight, is more likely to...

AI Technical Summary

Problems solved by technology

[0003] The reaction equation for the production of monoethanolamine borate is: H3BO3+C2H7N1O1→C2H8N1O3B1+H2O, the reaction needs to be carried out under heating conditions, and the reaction temperature range required under normal pressure is 135 ° C ~ 145 ° C, if the temperature is too low, the reaction will not be normal Most of the reaction products are monoethanolamine borate, and monoethanolamine borate is easy to be bioutilized, and cannot provide the alkali reserve required in the metalworking fluid; if the temperature is too high, the reaction will proceed rapidly and forward, forming Excess monoethanolamine borate will cause the reactant to form a large number of massive crystals after cooling to room temperature, which will affect the later use