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Waterborne acrylic resin and metal flashing paint applying same

A technology of water-based acrylic and flash paint, applied in the direction of coating, etc., can solve the problems of low solid content, high cost, and expensive polyurethane resin, and achieve the effects of improving sagging resistance, good coordination, and overcoming high VOC emissions

Active Publication Date: 2012-02-15
QINGDAO DEXIN AUTOMOBILE COATING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The matrix resins of water-based metallic glitter paint mainly include polyacrylic resin and polyurethane resin, among which polyurethane resin is expensive and is currently less used in China
[0005] Chinese patent CN1231311A has reported a kind of water-dispersed metallic glitter coating that can be used for automobile surface coating, and its film-forming polymer has core-shell structure, thereby resin itself has pseudoplasticity, has improved sag resistance, but metallic glitter not good
[0006] Chinese patent CN101029197A has reported a kind of water-based automotive metal glitter primer, the matrix resin is water-based polyurethane and acrylic resin, its VOC content is low, has certain safety and environmental protection, but the brightness is not high, and the cost is higher
[0007] Chinese patent CN101654591A reports a kind of self-drying metal glitter paint, with acrylic polyurethane resin as matrix, adding curing agent to realize room temperature curing during use, the cost is higher, mainly used in precision machine tools
[0008] Chinese patent CN101077954A has reported a kind of automotive glitter metallic paint, introduces acetoacetoxy functional group side group on the molecular chain of water-dispersed type acrylic resin, has improved water solubility and metallic glitter property, but anti-sagging mainly depends on external rheological control agent, resulting in lower solids content
[0009] In summary, the existing various flash metallic paints have failed to completely solve the balance of various properties, and so far there has been no report of a water-based metallic flash paint that combines the advantages of the core-shell structure and the acetoacetoxy functional group.

Method used

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  • Waterborne acrylic resin and metal flashing paint applying same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Synthesis of Waterborne Acrylic Resin

[0033] (1) Prepare emulsifier solution: Add 3.3g sodium dodecylsulfonate and 1.8g nonylphenyl polyoxyethyl ether to a beaker, then add 20mL deionized water to fully dissolve it; prepare the initiator Solution: add 0.8g ammonium persulfate and 20mL deionized water to the beaker to fully dissolve; prepare mixed monomer: mix 70-100g butyl acrylate with 20g methyl methacrylate;

[0034] (2) Add 2 / 3 of the emulsifier solution and 1 / 3 of the initiator solution into a nitrogen-protected four-neck flask, add 100mL of deionized water, and heat up while stirring; add 1 / 5 of the mixed monomer and continue stirring Raise the temperature to 84°C, keep the temperature constant, and react for 15 minutes to form a "seed" emulsion;

[0035] (3) Divide the remaining mixed monomer into two equal parts, add 13g butyl methacrylate, 1.2g methacrylic acid, 1.3g ethylene glycol dipropylene ester to the first part; add 10g methacrylic acid to the seco...

Embodiment 2

[0043] 1. Synthesis of Waterborne Acrylic Resin

[0044] (1) Add 2.2g of sodium dodecylsulfonate, 1.2g of nonylphenyl polyoxyethyl ether, 0.3g of ammonium persulfate and 20g of deionized water into a four-necked flask protected by nitrogen, and stir to fully dissolve , add 4g of methyl methacrylate and 17g of butyl acrylate while stirring, then gradually raise the temperature to 84°C, and react at constant temperature for 15 minutes;

[0045] (2) 8g methyl methacrylate, 13g butyl methacrylate, 34g butyl acrylate, 1.2g methacrylic acid and 1.1g trihydroxypropane triacrylate were mixed and stirred and then added dropwise to a four-necked flask for 1.5 hours After dropping, add 7.5g 4% ammonium persulfate solution and 4.2g emulsifier solution (containing 0.6g sodium dodecylsulfonate and 0.3g nonylphenyl polyoxyethyl ether) dropwise;

[0046] (3) 18g methyl methacrylate, 34g butyl acrylate, 5g acrylamide, 9g hydroxypropyl acrylate and 4.5g acetoacetoxy ethyl methacrylate were mix...

Embodiment 3

[0053] 1. Synthesis of Waterborne Acrylic Resin

[0054] (1) Add 2.2g of sodium dodecylsulfonate, 1.2g of nonylphenyl polyoxyethyl ether, 0.3g of ammonium persulfate and 20g of deionized water into a four-necked flask protected by nitrogen, and stir to fully dissolve , add 4g of methyl methacrylate and 16g of ethyl acrylate while stirring, then gradually raise the temperature to 84°C, and react at constant temperature for 15 minutes;

[0055] (2) Mix and stir 8g of methyl methacrylate, 13g of butyl methacrylate, 30g of ethyl acrylate, 1.0g of acrylic acid and 1.5g of hexanediol diacrylate and drop them into a four-necked flask for 1.5 hours. , while adding dropwise 7.5g 4% ammonium persulfate solution and 4.2g emulsifier solution (containing 0.6g sodium dodecylsulfonate and 0.3g nonylphenyl polyoxyethyl ether);

[0056] (3) 18g methyl methacrylate, 30g ethyl acrylate, 5g acrylamide, 9g hydroxyethyl methacrylate and 4.5g acetoacetoxyethyl methacrylate were mixed and stirred an...

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Abstract

The invention relates to paint, in particular to waterborne metal flashing paint and a preparation method thereof. The invention particularly relates to waterborne acrylic resin metal flashing paint which has a core-shell structure containing a chelation group, and is particularly applicable to automotive coatings. The flashing paint combines the advantages of the core-shell structure and an acetyl acetoxyl functional group, so that the disadvantage of high volatile organic compound (VOC) emission of the conventional solvent-based metal flashing paint is overcome; the sagging resistance, solid content and metal flashing property are improved; and the metal flashing paint is well matched with overcoat varnish.

Description

technical field [0001] The invention relates to a water-based acrylic resin and a paint material using the resin, in particular to a water-based metallic glitter paint and a preparation method thereof, in particular to a water-based acrylic resin metallic glitter having a core-shell structure and containing a chelating group in the shell structure paint, especially for automotive coatings. Background technique [0002] At present, most of the metal glitter paints produced in China are solvent-based. In order to ensure a good glitter effect, the solvent content needs to be as high as 85%, so a large amount of volatile organic compounds (VOC) will be emitted during the construction operation, and there is Potential hazards such as combustion, explosion, and poisoning exist. [0003] Water-based metallic glitter coating is not only a more environmentally friendly coating with greatly reduced VOC, but also has a better metallic effect than solvent-based coatings due to the high...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/14C08F220/28C08F220/06C08F220/56C08F222/14C08F2/26C08F2/30C09D133/08C09D133/10C09D133/12C09D5/00C09D7/12
Inventor 李少香武德法陈希磊姚丹
Owner QINGDAO DEXIN AUTOMOBILE COATING
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