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A kind of one-component water-based metallic glitter paint for automobile and preparation method thereof

A metallic glitter paint, one-component technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor physical and mechanical properties of paint films, differences in dry humidity of paint films, water resistance, chemical resistance and weather resistance of paint films The performance can not reach the problem of solvent-based metal flash paint, etc.

Active Publication Date: 2017-02-22
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are reports about water-based metallic flash paint in many professional journals and magazines at home and abroad, and DuPont, Aksu and PPG have corresponding products on the market, but these products have their defects: (1) The water resistance and water resistance of the paint film Chemical properties and weather resistance are not up to the level of solvent-based metallic glitter paint; (2) The physical and mechanical properties of the paint film are worse than solvent-based metallic glitter paint; (3) The solvent content reaches 15%-25%, although it is far lower than solvent-based metallic glitter paint (4) When acrylic emulsion is used as the main resin, the wet paint film obtained by spraying the prepared metal glitter paint will have blue light, and the blue light will disappear after drying, resulting in obvious differences in the dry humidity of the paint film. Not good for colorists

Method used

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  • A kind of one-component water-based metallic glitter paint for automobile and preparation method thereof
  • A kind of one-component water-based metallic glitter paint for automobile and preparation method thereof
  • A kind of one-component water-based metallic glitter paint for automobile and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] 1. Synthesis of solvent-free anion / nonionic PUA containing IPN structure

[0106] The synthetic formula of the solvent-free anion / nonionic PUA with IPN structure is shown in Table 3, and its synthetic process is as follows: 1. in the reactor equipped with agitator, condenser, thermometer, electric heating mantle and vacuum pump, first Add glycidyl tert-carbonate, heat up to 130-140°C, then add o-cyclohexanedioic acid-1-[1-methyl-2-[(1-oxo-2-propenyl)oxy]ethyl ] ester, part of MMA, triethylene glycol monomethyl ether acrylate, ethoxylated trimethylolpropane triacrylate and part of the mixture of di-tert-amyl peroxide and dodecyl mercaptan are added dropwise into the reactor, After 3-4 hours of dripping, add the remaining MMA and initiator, drop it within 0.5 hours, and finally keep it at 150°C for 2 hours to prepare PA prepolymer; Mix ester diol, polyethylene glycol monomethyl ether dimethylol propionate, trimethylolpropane and IPDI evenly, add to the reaction kettle, r...

Embodiment 2

[0123] Table 6 shows that in Example 2, under the condition that the amount of other monomers is kept constant, ethoxy ethoxy ethyl acrylate, triethylene glycol monomethyl ether acrylate, methoxy polyethylene glycol 400 acrylic acid are respectively used ester and methoxypolyethylene glycol 550 acrylate to synthesize a solvent-free anionic / nonionic PUA with IPN structure. The formula numbers are 5, 6, 7 and 8, and there are 4 formulas in total. The synthesis process of each recipe is the same.

[0124] According to the technical process of the anion / nonionic PUA of solvent-free synthesis with IPN structure according to embodiment 1, numbering is 4 kinds of PUA shown in table 6 as 5~8, prepares by the formula of embodiment 1 coating and the process of mixing paint The one-component water-based metallic glitter paint for automobiles containing the solvent-free anion / nonionic PUA with IPN structure prepares the paint film according to the construction method of the metallic glitt...

Embodiment 3

[0133] Table 8 changes the amount of triethylene glycol monomethyl ether acrylate to synthesize the basic formula of the solvent-free anion / nonionic PUA with IPN structure

[0134]

[0135] Table 8 is that in Example 3, under the condition that the amount of other monomers is kept constant, the amount of triethylene glycol monomethyl ether acrylate is gradually increased to 11g, 18g, 25g and 32g to synthesize solvent-free compounds with IPN structure. The feeding formulas of anionic / nonionic PUA are numbered 9, 10, 11 and 12 in sequence, and there are 4 formulas in total. The synthesis process of each recipe is the same.

[0136] According to the technical process of the anion / nonionic PUA of solvent-free synthesis with IPN structure according to embodiment 3, numbering is 4 kinds of PUA shown in table 8 as 9~12, prepares by the formula of embodiment 1 coating and the process of mixing paint The one-component water-based metallic glitter paint for automobiles containing th...

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Abstract

The invention discloses a single-component water-based metal flashing paint for automobiles containing a solvent-free anionic / nonionic polyurethane-acrylate graft copolymer (PUA) with interpenetrating network polymer structure (IPN) and a preparation method thereof. The water-based metal flashing paint belongs to an automobile ground color paint, and is mainly composed of a solvent-free anionic / nonionic PUV with IPN structure, an aluminum paste, an assistant, a cosolvent, deionized water and an amine neutralizer. The PUV is free of any organic solvent; PU (polyurethane) and PA (polyamide) form a crosslinked structure inside, and the two crosslinked networks are interpenetrated; and the PU and PA components are connected through a chemical bond. Therefore, the VOC (volatile organic compound) content of the water-based metal flashing paint prepared from the PUV and assistant is lower than 5%, and thus, the water-based metal flashing paint belongs to an environment-friendly product. The paint film has the advantages of excellent aluminum powder arrangement effect, excellent physical and mechanical properties, excellent water resistance, excellent chemical resistance and excellent weather resistance.

Description

technical field [0001] The invention belongs to the technical field of organic polymer material preparation, and relates to a one-component water-based metallic glitter paint for automobiles containing a solvent-free anion / nonionic PUA with an IPN structure and a preparation method thereof. Background technique [0002] Polyurethane aqueous dispersion (PU) has excellent wear resistance, flexibility, adhesion and chemical resistance, but it has poor self-thickening property, low solid content, poor water resistance and gloss. Aqueous acrylate dispersion (PA) has excellent water resistance, weather resistance and physical and mechanical properties, but poor flexibility, wear resistance and chemical resistance. If the advantages of the two are organically combined to form complementary advantages, it can make The comprehensive performance of the material has been significantly improved. PUA is a hybrid aqueous dispersion prepared by preparing polyacrylate and polyurethane poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D7/12C08G18/66C08G18/44C08G18/42C08G18/62C08F222/16C08F220/14C08F220/28
CPCC08F222/1006C08F222/103C08G18/4277C08G18/44C08G18/6225C08G18/664C09D175/06C08F220/14C08F220/281
Inventor 张育波阮伟明李柏文王炼石伍琪卓秦中海冯兆华
Owner GUANGDONG YATU CHEM
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