(2-hydroxy-3-dehydroabieticoxy) propyl chitosan-oligosaccharide and preparation method thereof

A technology of dehydroabietyloxy and chitooligosaccharides, which is applied in the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve problems such as limited application, poor solubility, and impact

Inactive Publication Date: 2014-08-06
YANCHENG INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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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. , thereby affecting and restricting its further application, especially affecting and restricting its use as the basic raw material for the construction of hydrophilic groups for the preparation of surfactants

Method used

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  • (2-hydroxy-3-dehydroabieticoxy) propyl chitosan-oligosaccharide and preparation method thereof
  • (2-hydroxy-3-dehydroabieticoxy) propyl chitosan-oligosaccharide and preparation method thereof
  • (2-hydroxy-3-dehydroabieticoxy) propyl chitosan-oligosaccharide and preparation method thereof

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Embodiment Construction

[0021] (2-hydroxyl-3-dehydroabietyloxy) propyl chitooligosaccharides involved in the invention and preparation method thereof, is characterized in that a kind of figure 1 The (2-hydroxyl-3-dehydroabietyloxy) propyl group of the shown structure is a new type of green nonionic surfactant (2-hydroxyl-3-dehydroabietyloxy) propyl group as lipophilic group and chitooligosaccharide group as hydrophilic group (2-hydroxyl-3-dehydroabietyloxy) (hydroabietyloxy) propyl chitooligosaccharides, including preparation of dehydroabietyl glycidyl ether, preparation of water-soluble chitooligosaccharides and (2-hydroxy-3-dehydroabietyloxy) propyl chitooligosaccharides Glycans were prepared using a process consisting of three main processes.

[0022] (1) Preparation of dehydroabietyl glycidyl ether: in BF 3 -In the presence of ether, after dehydroabietyl alcohol directly reacts with epichlorohydrin to obtain 3-chloro-2-hydroxypropyl dehydroabietyl ether, then in the presence of sodium hydroxide ...

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Abstract

Through the technology comprising the following three main processes such as dehydrogenated rosinalkyl glycidyl ether preparation, water-soluble chitosan-oligosaccharide preparation and (2-hydroxy-3-dehydroabieticoxy) propyl chitosan-oligosaccharide preparation, a nonionic surfactant, namely (2-hydroxy-3-dehydroabieticoxy) propyl chitosan-oligosaccharide, taking rosin and chitosan as raw materials is obtained. The processes are as follows: obtaining the dehydrogenated rosinalkyl glycidyl ether through addition cyclization reaction of dehydroabietic alcohol and epoxy chloropropane; then carrying out reaction between the dehydrogenated rosinalkyl glycidyl ether and the chitosan-oligosaccharide which is 500 to 50,000 in molecular weight and is generated through oxidative degradation of the chitosan; finally, generating the novel nonionic surfactant (2-hydroxy-3-dehydroabieticoxy) propyl chitosan-oligosaccharide of which an average grafting degree of a glucosamine unit ranges from 5% to 300%.

Description

technical field [0001] The (2-hydroxyl-3-dehydroabietyloxy) propyl chitooligosaccharide involved in the present invention and its preparation method are a new type of surfactant in the field of fine organic chemicals based on (2-hydroxyl-3 -Dehydroabietyloxy)propyl group is a lipophilic group and chitooligosaccharide group is a green environmental protection nonionic surfactant (2-hydroxyl-3-dehydroabietyloxy)propyl shell low Glycans and methods for their preparation. Background technique [0002] Pine resin is a secretion produced by pine trees during their natural growth. As a renewable natural resource, rosin can be obtained through fractionation treatment to obtain rosin mainly composed of abietic acid, long-leaf abietic acid and neoabietic acid containing three-membered phenanthrene ring structure resin acids, and Turpentine oil with pinene as the main component. [0003] Rosin can be converted into disproportionated rosin with dehydroabietic acid as the main compone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/08B01F17/56C07H1/00C07H15/12C07H15/04C09K23/56
Inventor 蔡照胜蒋士猛朱雪梅张怀红赵玲玲郁桂云商士斌
Owner YANCHENG INST OF TECH
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