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Waterborne hydroxyl acrylic finish paint and preparation method thereof

A technology of hydroxyacrylic acid and water-based isocyanate, which is applied in the field of coatings, can solve the problems of high cost and poor film performance, and achieve the effects of increasing the coating area, high solid content in construction, and fast drying

Inactive Publication Date: 2019-08-06
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of waterborne hydroxyacrylic topcoat, to solve the defects of high cost and poor film performance of two-component waterborne hydroxyacrylic topcoat in the prior art

Method used

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  • Waterborne hydroxyl acrylic finish paint and preparation method thereof
  • Waterborne hydroxyl acrylic finish paint and preparation method thereof

Examples

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preparation example Construction

[0040] A preparation method for water-based hydroxyacrylic topcoat, comprising the following steps:

[0041] S1, mix 1 / 2~1 / 3 deionized water and emulsifier evenly, then add brightening agent, disperse evenly, set aside;

[0042] S2, mix the remaining deionized water with pH regulator, defoamer, dispersant, anti-sedimentation agent and 1 / 3~1 / 2 of co-solvent, stir, then add pigments and fillers, stir, and then grind to Fineness ≤ 15μm, that is the stock slurry;

[0043] S3, add the stock preparation slurry to the water-based hydroxyacrylic acid dispersion weight, stir, then add the wetting and leveling agent, thickener and the remaining co-solvent, and stir, which is the A component;

[0044] S4, add the water-based isocyanate curing agent and the environmental protection solvent into the container, and mix evenly, which is the B component;

[0045] S5, mixing component A and component B to obtain a final product.

[0046] The preparation method of described waterborne hydrox...

Embodiment 1

[0053] The following parts are parts by mass.

[0054] S1, mix 4.3 parts of deionized water and 1 part of emulsifier Synperonic PE / F127 evenly, then add 1 part of brightener SP-9512, disperse at 1500r / min for 60min, disperse evenly, and set aside;

[0055] S2, with 4.3 parts of deionized water and 0.2 parts of pH regulator dimethylethanolamine, 0.2 parts of antifoaming agent BYK024, 1.5 parts of dispersant (mass ratio of BYK-190 and BYK-194 of 3:1 Mixture), 3 parts of anti-settling agent (3% DE) and 0.7 part of cosolvent (a mixture of dipropylene glycol methyl ether and dipropylene glycol butyl ether with a mass ratio of 2:3) are mixed uniformly, and the pH is adjusted to be 7-10 , stirred at 800r / min for 15min, then added 21 parts of pigment DuPont R-706 and 10 parts of filler precipitated barium sulfate (1500 mesh), stirred at 1000r / min for 30min, and then ground to a fineness of ≤15μm, namely Stock preparation;

[0056] S3, adding the stock preparation slurry to 50 parts ...

Embodiment 2

[0060] The following parts are parts by mass.

[0061] S1, mix 2.3 parts of deionized water and 1.2 parts of emulsifier Synperonic PE / F127 evenly, then add 1.2 parts of brightener SP-9512, disperse at 1400r / min for 50min, disperse evenly, and set aside;

[0062] S2, 2.4 parts of deionized water and 0.3 parts of pH regulator dimethylethanolamine, 0.4 parts of antifoaming agent BYK024, 0.8 parts of dispersant (a mixture of BYK-190 and BYK-194 with a mass ratio of 2:1 ), 4 parts of anti-sedimentation agent (5% DE) and 1.5 parts of cosolvent (the mixture of dipropylene glycol methyl ether and dipropylene glycol butyl ether with a mass ratio of 3:2) are mixed uniformly, and the pH is adjusted to be 7~10, Stir at 700r / min for 10min, then add 2 parts of pigment carbon black MA100 and 26 parts of filler precipitated barium sulfate (1500 mesh), stir at 1200r / min for 20min, then grind to fineness≤15μm, which is the stock slurry ;

[0063] S3, adding the stock preparation slurry to 55 ...

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Abstract

The invention relates to a waterborne hydroxyl acrylic finish paint and a preparation method thereof. The waterborne hydroxyl acrylic finish paint comprises a component A and a component B, and the component A comprises, by mass, 50-55 parts of an aqueous hydroxyl acrylic dispersion, 4.5-9 parts of deionized water, 0.2-0.3 part of a pH adjuster, 2-3 parts of a cosolvent, 1-1.2 parts of a wetting and leveling agent, 1-1.2 parts of a brightener, 1-1.2 parts of an emulsifier, 3-4 parts of an anti-settling agent, 0.5-0.7 part of a thickener, 0.2-0.4 part of an antifoaming agent, 0.8-1.5 parts of adispersant, 2-21 parts of a pigment and 10-26 parts of a filler; the component B comprises, by mass, 75-85 parts of an aqueous isocyanate curing agent and 15-25 parts of an environmentally friendly solvent; and a mass ratio of the component A to the component B is (8-10):1 . The finish paint in the invention has far higher hardness and glossiness than existing low-hydroxyl waterborne acrylic polyurethane finish paints, and has a far lower cost than high-hydroxyl waterborne acrylic polyurethane finish paints.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a high-gloss, high-solid low-hydroxyl water-based hydroxyl acrylic topcoat and a preparation method thereof. Background technique [0002] At present, the development of water-based coatings is relatively rapid, especially in the context of increasingly stringent environmental protection policies, high-performance coatings are sought after by the market. Especially with the development of my country's economy, there are more and more various vehicles, various construction vehicles (such as cement tankers, muck trucks, etc.), cleaning vehicles (sprinklers, sweepers, garbage trucks, etc.), The market potential of agricultural vehicles (agricultural tricycles, tractors, harvesters, seeders, etc.) and transport vehicles of various specifications is still huge. Compared with cars and buses, the requirements for these cars are generally not too high, so it is easier to achieve water-based paint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04
CPCC09D175/04
Inventor 宋利强周泽钱张戈辉许旭董立志
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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