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Marine biological polysaccharide-copper compound and its preparation method and application

A technology for marine biological polysaccharides and complexes, which is applied in the fields of botanical equipment and methods, chemicals for biological control, applications, etc., can solve the problems of difficult promotion, high cost, poor efficacy, etc. Good solubility and the effect of improving antibacterial activity

Inactive Publication Date: 2017-09-22
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, direct use of chitosan as a single active component has problems such as poor drug efficacy, large dosage, and high cost, so it is difficult to promote

Method used

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  • Marine biological polysaccharide-copper compound and its preparation method and application
  • Marine biological polysaccharide-copper compound and its preparation method and application
  • Marine biological polysaccharide-copper compound and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of embodiment 1 derivative 1

[0032] Add 4.7 grams of 2-aminopyridine and 5 grams of acetylacetone into 150 mL of absolute ethanol, and react under reflux for 12 hours. The reactant is rotary evaporated, washed with cold ethanol, and dried at 60 degrees Celsius to obtain the monoquaternary ammonium ligand.

[0033] Add 1.5 grams of chitosan with a molecular weight of 1.3 million to 60 mL of absolute ethanol and 75 mL of water, and add 1.5 mL of acetic acid dropwise under stirring; In the system, reflux for 15 hours; add 7.5 grams of chloroacetic acid to 20 mL of absolute ethanol, dropwise add to the reaction system, react at 60 ° C for 6 hours, cool to room temperature, add absolute ethanol to precipitate, precipitate with suction filtration, anhydrous Wash with ethanol and dry at 60°C to obtain light yellow powder, which is O-carboxymethyl chitosan Schiff base derivative.

[0034] Dissolve 1.0 g of O-carboxymethyl chitosan Schiff base derivative in 60...

Embodiment 2

[0037] The preparation of embodiment 2 derivative 2

[0038] 5.4 grams of 2-amino-5-picoline and 5 grams of acetylacetone were added to 150 mL of absolute ethanol, refluxed for 12 hours, the reactant was rotary evaporated, washed with cold ethanol, and dried at 60 degrees Celsius to obtain the monoquaternary amine compound body.

[0039] Add 1.5 grams of chitosan with a molecular weight of 1.3 million to 60 mL of absolute ethanol and 75 mL of water, and add 1.5 mL of acetic acid dropwise under stirring; In the system, reflux for 15 hours; add 7.5 grams of chloroacetic acid to 20 mL of absolute ethanol, dropwise add to the reaction system, react at 60 ° C for 6 hours, cool to room temperature, add absolute ethanol to precipitate, precipitate with suction filtration, anhydrous Wash with ethanol and dry at 60°C to obtain light yellow powder, which is O-carboxymethyl chitosan Schiff base derivative.

[0040] Dissolve 1.0 g of O-carboxymethyl chitosan Schiff base derivative in 60...

Embodiment 3

[0041] The preparation of embodiment 3 derivative 3

[0042] Add 6.4 grams of 2-amino-5-chloropyridine and 5 grams of acetylacetone to 150 mL of absolute ethanol, reflux for 12 hours, spin evaporate the reactants, wash with cold ethanol, and dry at 60 degrees Celsius to obtain the monoquaternary ammonium ligand .

[0043] Add 1.5 grams of chitosan with a molecular weight of 1.3 million to 60 mL of absolute ethanol and 75 mL of water, and add 1.5 mL of acetic acid dropwise under stirring; In the system, reflux for 15 hours; add 7.5 grams of chloroacetic acid to 20 mL of absolute ethanol, dropwise add to the reaction system, react at 60 ° C for 6 hours, cool to room temperature, add absolute ethanol to precipitate, precipitate with suction filtration, anhydrous Wash with ethanol and dry at 60°C to obtain light yellow powder, which is O-carboxymethyl chitosan Schiff base derivative.

[0044] Dissolve 1.0 g of O-carboxymethyl chitosan Schiff base derivative in 60 mL of water, 1....

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Abstract

The invention belongs to a marine chemical engineering technology and particularly relates to a marine biological polysaccharide-copper compound and its preparation method and application. The compound is shown in the formula I. The compound shown in the formula I is used for preparation of an agricultural fungicide. The O-carboxymethyl chitosan acetylacetone aminopyridine schiff base-copper compound has good solubility, is soluble in a variety of solvents, improves the antibacterial effects, prevents the heavy metal ion residues in the soil, expands an application field and has a potential application value in the field of pesticide. In the formula I, R represents hydrogen, methyl, chlorine or trifluoromethyl and n is 4 to 4000.

Description

technical field [0001] The invention belongs to marine chemical engineering technology, and in particular relates to a marine biological polysaccharide copper complex and its preparation method and application. Background technique [0002] Copper preparations are widely used in agricultural fungicides because of their low price, simple use, and resistance to pesticides. It is mainly divided into two types: inorganic and organic. Relying on the release of copper ions to interact with -SH, -NH2, -COOH, -OH and other groups in the protein in the pathogenic bacteria, resulting in the death of the pathogenic bacteria. However, improper use of traditional copper preparations can easily cause phytotoxicity and induce the outbreak of mites. Therefore, the content and release capacity of copper ions are the main factors that determine the bactericidal and disease-preventing effects of copper preparations, and are also important factors that determine their safety to crops. [000...

Claims

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Application Information

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IPC IPC(8): C08B37/08A01N55/02A01P1/00A01P3/00
CPCC08B37/003A01N55/02
Inventor 李鹏程刘卫翔秦玉坤刘松邢荣娥于华华李克成范兆乾方士鑫
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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