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Polymer metal salt, preparation method thereof and application of polymer metal salt in preparing anti-fouling paint

A metal salt and polymer technology, applied in antifouling/underwater coatings, paints containing biocides, etc., can solve problems such as increasing investment and achieve the effect of preventing adhesion

Inactive Publication Date: 2012-08-22
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, although some progress has been made in the development of environmentally friendly antifouling agents, there are still few achievements that can really meet the requirements of low cost, high efficiency, non-toxic or low toxicity, so more investment is needed in this area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, the preparation of p-chlorobenzoic acid carboxymethyl chitosan magnesium salt

[0020] Take by weighing 24.5 grams of carboxymethyl chitosan sodium salt (carboxyl content is 0.1mol), 17.85 grams of sodium p-chlorobenzoate (0.1mol) are dissolved in 500ml of water, stir to obtain solution 1; then 12.03 grams of magnesium sulfate (0.1mol ) was dissolved in 300ml of water, and stirred evenly to obtain solution 2. Then, under the condition of stirring at 50°C, solution 1 was added dropwise to solution 2, and the drop was completed within 2 hours, and the reaction was completed after continuing to stir for 30 minutes. , the yield was 90%.

Embodiment 2

[0021] Embodiment 2, the preparation of benzoic acid carboxymethyl chitosan calcium salt

[0022] Weigh 24.5 grams of carboxymethyl chitosan sodium salt (carboxyl content is 0.1mol), dissolve 14.4 grams of sodium benzoate (0.1mol) in 500ml of water, stir to obtain solution 1; then add 11.1 grams of calcium chloride (0.1mol) Dissolve in 300ml of water and stir evenly to obtain solution 2. Then, under the condition of stirring at 50°C, solution 1 was added dropwise to solution 2, and the drop was completed within 2 hours, and the reaction was completed after continuing to stir for 30 minutes, and the precipitate was separated and washed with water, dried, and ground to obtain 35.2 white powder products. The yield was 92.3%.

Embodiment 3

[0023] Embodiment 3, the preparation of leucine carboxymethyl chitosan copper salt

[0024] Weigh 24.5 grams of carboxymethyl chitosan sodium salt (carboxyl content is 0.1mol), dissolve 13.5 grams of sodium leucine (0.1mol) in 500ml of water, stir to obtain solution 1; then add 16.0 grams of copper sulfate (0.1mol ) was dissolved in 300ml of water, and stirred evenly to obtain solution 2. Then, under the condition of stirring at 50°C, add solution 1 dropwise to solution 2, drop it off within 2 hours, and continue stirring for 30 minutes to complete the reaction, separate the precipitate, wash with water, dry, and grind to obtain a 34.6 blue powder product , and the yield was 87.5%.

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PUM

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Abstract

The invention relates to a polymer metal salt, a preparation method of the polymer metal salt and application of the polymer metal salt in preparing anti-fouling paint. The preparation method comprises the step of: dropwise adding inorganic acid salt aqueous solution of calcium, magnesium, copper or zinc to aqueous solution of alkali metal salt of carboxymethyl chitosan carboxylic acid, carboxymethyl cellulose carboxylic acid or carboxylic acid and micromolecular organic acid alkali metal salt to carry out precipitation reaction so as to obtain the polymer metal salt. The low-toxicity or no-toxicity micromolecular organic acid released during the hydrolysis of the polymer metal salt in seawater can effectively prevent the adhesion of fouling organisms; and the residual carboxymethyl chitosan or carboxymethyl cellulose or alginic acid polymer residue after hydrolysis still has certain anti-fouling performance, and the hydrophilic carboxylate on the polymer residue is dissolved in seawater after being increased to certain quantity, so that the coating is endowed with polishing property. The polymer metal salt has the environment-friendly characteristic; and the environment-friendly type anti-fouling paint prepared by the polymer metal salt also has better anti-fouling effect.

Description

technical field [0001] The invention relates to a polymer metal salt, in particular to a polymer calcium salt, magnesium salt, copper salt or zinc salt, a preparation method thereof and an application in preparation of marine antifouling paint. Background technique [0002] Marine periphyton refers to the general term for animals, plants and microorganisms that grow on the bottom of ships and on the surface of all facilities in the sea. These organisms grow on the bottom of ships, buoys, water pipes, cooling pipes, sunken ships, submarine cables, rafts, buoys, pontoons, nets and marine monitoring instruments, thereby causing corresponding hazards. They are attached to the bottom of the ship, which will increase the navigation resistance, reduce the speed of the ship, and consume more fuel; when attached to the marine aquaculture nets, they will cause mesh blockage, reduce seawater exchange efficiency, and cause stunted or even death of marine aquaculture fish and shellfish; ...

Claims

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Application Information

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IPC IPC(8): C08B37/08C08B37/04C08B15/05C09D5/16
Inventor 董磊闫雪峰于良民李昌诚姜晓晖李霞赵海洲张志明夏树伟
Owner OCEAN UNIV OF CHINA