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Waterborne rust conversion polymer emulsion, coating thereof and method for preparing same

A polymer emulsion, rust-to-rust technology, applied in anti-corrosion coatings, coatings, etc., can solve environmental hazards and other problems, achieve the effect of less equipment investment, good safety, and wide source of raw materials

Inactive Publication Date: 2014-09-24
深圳海润德添加剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be found from the above inventions that these coatings all use inorganic phosphoric acid or inorganic salt sodium nitrite, and the products of the reaction between phosphoric acid and rust will be brought into the environment by rainwater to cause eutrophication of water bodies, while sodium nitrite is a well-known A carcinogen; the use of these substances poses a potential hazard to the environment

Method used

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  • Waterborne rust conversion polymer emulsion, coating thereof and method for preparing same
  • Waterborne rust conversion polymer emulsion, coating thereof and method for preparing same
  • Waterborne rust conversion polymer emulsion, coating thereof and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, the preparation of a kind of water-based rust turning rust polymer emulsion

[0045]

[0046] Preparation:

[0047] 1. Dissolving 2g of ammonium persulfate in deionized water is prepared into a 4% concentration of oxidizing agent aqueous solution for subsequent use; 3g of sodium thiosulfate is dissolved in deionized water and prepared into a 6% concentration of reducing agent aqueous solution for subsequent use;

[0048] 2. In the reactor, add 28Kg deionized water, 0.26Kg sodium secondary alkylbenzene sulfonate, 0.13Kg alkylphenol polyoxyethylene ether OP-35 in the first stage, replace with nitrogen and add 1.35Kg partial Ethylene dichloride, 0.10Kg methyl methacrylate, 0.06Kg acrylic acid mixed monomer, control the stirring speed to 100rpm, stir for 5min and then raise the temperature to 45°C, add the oxidizing agent aqueous solution prepared in the first step, and add the reducing agent aqueous solution dropwise after 15 minutes Carry out polymerizat...

Embodiment 2

[0051] Embodiment 2 Preparation of a kind of water-based rust-reversing polymer emulsion with rust

[0052]

[0053] Preparation:

[0054] 1. Dissolve 2g of sodium persulfate in deionized water and prepare an aqueous solution of 4% concentration of oxidizing agent for subsequent use; dissolve 3g of sodium thiosulfate in deionized water and prepare an aqueous solution of reducing agent with a concentration of 6% for subsequent use;

[0055] 2. In the reactor, add 28Kg deionized water, 0.30Kg NP-40, 0.15Kg Dowfax in the first stage, replace with nitrogen and vacuumize, add 1.4Kg vinyl chloride, 0.03Kg methyl methacrylate, 0.02Kg methacrylic acid Mix the monomers, control the stirring speed to 100rpm, stir for 5 minutes, then raise the temperature to 45°C, add the oxidizing agent aqueous solution prepared in the first step, add the reducing agent aqueous solution dropwise after 15 minutes for polymerization, react for 1-2 hours, and the pressure in the polymerization tank is 0...

Embodiment 3

[0058] Embodiment 3 Preparation of a kind of water-based polymer emulsion with rust turning rust

[0059]

[0060]

[0061] Preparation:

[0062] 1. Dissolve 2g of potassium persulfate in deionized water and prepare an aqueous solution of 4% concentration of oxidizing agent for subsequent use; dissolve 3g of sodium thiosulfate in deionized water and prepare an aqueous solution of reducing agent with a concentration of 6% for subsequent use;

[0063] 2. In the reactor, add 28Kg deionized water and 0.10Kg poly-(oxo-1,2-ethylene dimethylene)-α-nonylphenyl-ω-hydroxyl (NP-40) in the first stage , 0.20Kg alkyl diphenyl oxide disulfonate Dowfax, replace with nitrogen and vacuumize, add 1.3Kg vinylidene chloride, 0.02Kg butyl acrylate and 0.004Kg methacrylic acid mixed monomer, control the stirring speed to 100rpm After stirring for 5 minutes, the temperature was raised to 45°C, and the oxidizing agent aqueous solution prepared in the first step was added. After 15 minutes, the...

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Abstract

The invention discloses a waterborne rust conversion polymer emulsion. The waterborne rust conversion polymer emulsion is prepared by the polyreaction of alkenyl halide monomers, monomers of (methyl)acrylic acid and esters of (methyl)acrylic acid, alkene phosphate ester monomers, a complexing agent, a compound emulsifying agent, an initiator and deionized water in an inert atmosphere at a pressure of 0.08 to 0.12MPa and a temperature of between 50 and 60 DEG C; and the percentages of dosages of all components on the basis of the total weight of all polyreaction monomers are: 75.0 to 95.0 percent of alkenyl halide monomers, 1.0 to 5.0 percent of alkene phosphate ester monomers, 5.0 to 10.0 percent of monomers of (methyl)acrylic acid and esters of (methyl)acrylic acid, 0.05 to 0.5 percent of initiator, 2 to 4 percent of compound emulsifying agent, 1.0 to 10.0 percent of complexing agent and 100 to 120 percent of deionized water. The coating prepared by the emulsion has the characteristics of good adhesive force, strong covering force, good stability, acid resistance, alkali resistance, salt spray corrosion resistance and long service life, and can be directly coated on the surfaces of metallic materials with a tight rusty layer without the rust removal treatment; and in a film-forming process, no volatile organic compounds are discharged, so that the coating of the invention is a green environmentally protected antirust coating.

Description

technical field [0001] The invention relates to a metal water-based environmental protection coating, in particular to a preparation method of a polymer for the water-based anti-rust coating and the preparation of the water-based environmental protection anti-rust coating. Background technique [0002] According to statistics, the annual loss of metal due to corrosion in the world is more than 20% of the annual output of metal, and the resulting economic loss is about 1 trillion US dollars. The annual economic losses caused by corrosion in our country account for about 4% of the gross national product, exceeding the sum of the losses caused by fire, wind disasters and earthquakes. At least 20 billion yuan. The loss caused by metal corrosion is so serious, especially the anti-corrosion of steel has attracted people's attention day by day. One of the most effective and commonly used methods to prevent metal corrosion is to apply an anti-corrosion coating on the metal surface....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/06C08F214/08C08F230/02C08F220/06C08F220/14C08F220/18C08F220/32C08F220/44C08F2/30C08F2/26C09D127/06C09D127/08C09D5/08
Inventor 黄河马道林张健聂端阳张丽其他发明人请求不公开姓名
Owner 深圳海润德添加剂有限公司
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