A kind of diallyl ammonium chloride and preparation method thereof

Abstract

The invention provides high-purity diallyl ammonium chloride and a preparation method thereof. According to the method, diallylamine is dissolved in a nonpolar organic solvent in a certain ratio, hydrogen chloride gas is slowly introduced into an organic liquor for a reaction under the cooling condition, a product obtained after the reaction is subjected to liquid-solid separation, a solvent on the surface of a solid is dried, and the high-purity diallyl ammonium chloride product is obtained. The diallylamine is dissolved in the nonpolar organic solvent, so that the reaction concentration of diallylamine is controllable, the nonpolar organic solvent can better transfer heat, and the system temperature is kept stable. Hydrogen chloride gas is introduced into a reactor, hydrogen chloride gasand diallylamine react on the bubble surface by use of the principle of surface reactology, the problem of violent reaction due to direct addition of hydrochloric acid or hydrogen chloride gas to diallylamine is solved, and the safety is improved.

Description

technical field

[0001] The invention relates to the technical field of chemical preparation, in particular to diallyl ammonium chloride and a preparation method thereof. Background technique

[0002] At present, most of the diallyl ammonium chloride products that exist on the market are obtained by titrating diallylamine with about 30% industrial hydrochloric acid. There are the following disadvantages in the preparation of diallyl ammonium chloride products by this method:

[0003] (1) Since industrial hydrochloric acid contains about 70% of water, the resulting diallyl ammonium chloride product contains a large amount of water. Although some manufacturers remove part of the water by vacuum heating and distillation, according to the principle of physical and chemical entropy increase , an isolated system cannot develop towards a low-entropy state, that is, it will not become orderly. It is very difficult to separate two mixed substances into two pure substances. Both labor...