Improved preparation method for zinc/copper acrylate resin

A technology of acrylic zinc and copper resin, which can be used in biocide-containing paints, antifouling/underwater coatings, coatings, etc., and can solve the problems of poor repeatability of antifouling effect, low stability of acrylic zinc/copper resin, and agglomeration. , to achieve the effect of inhibiting adhesion and growth, shortening reaction time, and reducing production cost

Active Publication Date: 2013-09-11
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the formation of zinc / copper acrylate in the above method, metal bases (basic organic acid salts) tend to agglomerate or settle at the bottom of the equipment, resulting in low stability of zinc acrylate / copper resin and poor reproducibility of antifouling effect

Method used

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  • Improved preparation method for zinc/copper acrylate resin
  • Improved preparation method for zinc/copper acrylate resin
  • Improved preparation method for zinc/copper acrylate resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Preparation of zinc hydroxide

[0043] Add 32.2g of sodium hydroxide to a solution containing 2.5ml of ethanol, 0.5ml of acetone, and 97ml of water, stir continuously until the sodium hydroxide is completely dissolved, use 0.2g of sodium hexametaphosphate as a dispersant, and fully Stir for 0.5 hour, slowly add 100ml of 4.0mol / L zinc nitrate dropwise until the pH of the solution becomes neutral. Insulate and disperse for 1 hour, vacuum filter, wash with 100ml of distilled water for 3 times, drain, and dry at 80°C for 12 hours.

[0044] 2) Preparation of Acrylic Prepolymer

[0045] In a 500ml three-necked round-bottomed flask equipped with stirring, condenser, and constant pressure dropping funnel, add 100g of mixed solvent (the mass ratio of xylene to n-butanol is 4:1), 80°C, 400r / min, dropwise within 3h Complete 100 g of acrylic acid monomer mixture (23 g of acrylic acid, 31 g of methyl methacrylate, 41 g of butyl acrylate) containing 4 g of azobisisobutyronitrile...

Embodiment 2

[0053] Unlike Example 1, the preparation of copper hydroxide:

[0054] Add 32.2g of sodium hydroxide to a solution containing 2.5ml of ethanol, 0.5ml of acetone, and 97ml of water, and stir continuously until the sodium hydroxide is completely dissolved. Use 0.2g of sodium hexametaphosphate as a dispersant, and fully stir at 500r / min at 40C After 0.5 hour, slowly add 100 ml of 4.0 mol / L copper hydroxide dropwise until the pH of the solution becomes neutral. Insulate and disperse for 1 hour, vacuum filter, wash with 100ml of distilled water for 3 times, drain, and dry at 80°C for 12 hours.

[0055] The operation example of other steps is the same as Example 1, promptly obtains acrylic acid copper antifouling paint, and the results are shown in Table 1.

Embodiment 3

[0057] Unlike Example 1, the preparation of copper hydroxide:

[0058] Add 32.0g of sodium hydroxide to a solution containing 2.0ml of ethanol, 1.0ml of methyl ethyl ketone, and 97ml of water, stir continuously until the sodium hydroxide is completely dissolved, use 0.2g of polyacrylamide as a dispersant, and stir fully at 40°C at 500r / min After 0.5 hour, 100ml of 4.0mol / L zinc chloride was slowly added dropwise until the pH of the solution became neutral. Insulate and disperse for 1 hour, vacuum filter, wash with distilled water until no chloride ions can be detected, drain, and dry at 80°C for 12 hours.

[0059] The operation example of other steps is the same as Example 1, promptly obtains zinc acrylic acid antifouling paint, and the result of hanging board is shown in Table 1.

[0060] Table 1 Performance comparison of improved zinc acrylate / copper resin antifouling coatings

[0061]

[0062] Note: 1. The blank sample is not coated with marine antifouling paint except...

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Abstract

The invention specifically relates to an improved preparation method for a zinc/copper acrylate resin, which belongs to the technical field of marine anti-fouling paints. The preparation method comprises the following steps: with a mixed system of water and an organic solvent as a disperse medium, reacting a metal salt solution with aqueous alkali to produce zinc/copper hydroxide, fully dispersing the zinc/copper hydroxide in a dispersant and then carrying out filtering and drying so as to obtain high-dispersibility zinc/copper hydroxide; subjecting soft and hard monomers of acrylic acid to free radical polymerization under the action of an initiator at a constant temperature so as to produce an acrylic prepolymer containing a carboxyl group; and reacting the acrylic prepolymer obtained in the previous step with the dispersed zinc/copper hydroxide under the action of an organic acid at a constant temperature so as to prepare the zinc/copper acrylate resin with hydrolysis characteristics. According to the invention, the zinc/copper hydroxide prepared in the invention has good dispersibility and no agglomeration and needs short reaction time during reaction with the acrylic prepolymer, so cost is low, and original equipment does not need to be improved.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling coatings, in particular to an improved preparation method of acrylic acid zinc / copper resin. Background technique [0002] Marine fouling organisms mainly refer to the general term of animals, plants and microorganisms attached to the bottom of ships, buoys and all artificial facilities, and are one of the important factors affecting the safety and service life of marine facilities. The hazards of biofouling mainly include the following aspects: increase ship resistance, block pipelines, accelerate metal corrosion, and compete with marine shellfish for attachment base and bait. [0003] A common solution to biofouling is to apply antifouling paint. Organotin self-polishing antifouling technology emerged in the 1970s. Organotin self-polishing paint is a combination of tributyltin methacrylate and methyl methacrylate copolymer and cuprous oxide. Fouling coatings can effectively prevent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/06C08F220/14C08F8/42C09D133/08C09D7/12C09D5/16
Inventor 夏传海刘苏静马宣宣孙秀敏王建华
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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