Allyl dimethyl dehydroabietyl ammonium chloride graft chitooligosaccharide and its preparation method

Abstract

Three preparations including the preparation of allyl dimethyl dehydroabietyl ammonium chloride, the preparation of water-soluble chitooligosaccharides and the preparation of allyl dimethyl dehydroabietyl ammonium chloride grafted chitooligosaccharides The process including the main process has obtained a green cationic surfactant allyl dimethyl dehydroabietyl ammonium chloride with dehydroabietyl as the lipophilic group and chitooligosaccharide group as the hydrophilic group. Chitooligosaccharides. Its process is as follows: dehydroabietyl amine generates N through Eschweiler-Clarke reaction, after N-dimethyl dehydroabietyl amine, then reacts with allyl chloride to obtain allyl dimethyl dehydroabietyl ammonium chloride, and then Through the reaction of allyl dimethyl dehydroabietyl ammonium chloride and chitosan oligosaccharides with a molecular weight of 500-50000 generated by oxidative degradation, the average grafting degree of glucosamine units finally reaches 5-100%. Allyl dimethyl dehydroabietyl ammonium chloride grafted chitooligosaccharide cationic surfactant.

Description

technical field [0001] The allyl dimethyl dehydroabietyl ammonium chloride grafted chitooligosaccharide and the preparation method thereof involved in the present invention are a kind of surface active agent in the field of fine organic chemicals with dehydroabietyl as the lipophilic group The green environment-friendly cationic surfactant allyl dimethyl dehydroabietyl ammonium chloride grafted chitooligosaccharides with chitooligosaccharide groups as hydrophilic groups and a preparation method thereof. Background technique [0002] Pine resin is a secretion produced during the natural growth of pine trees. As a natural resource with renewable and good biodegradability, rosin can be obtained by fractional distillation to obtain resin acids containing three-membered phenanthrene ring structures composed of abietic acid, long-leaved abietic acid and neoabietic acid. Rosin as the main component, and turpentine with α-pinene and β-pinene as the main components. [0003] Rosin ...

AI Technical Summary

Problems solved by technology

However, because the molecular weight of chitosan is tens of thousands or even hundreds of thousands, and there are relatively strong hydrogen bonds between its molecular chains, its solubility in pure water and in alkaline media is still not very good. , which affects and limits its further application, especially affects and limits its use as the basic raw material of hydrophilic group for the preparation of surfactants

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