Waterborne pigment-sealing primer coating and preparation method thereof

A pigment and white base technology, which is applied in the field of water-based pigment-sealed white base paint and its preparation, can solve problems such as unsatisfactory effects, discoloration of coating films, and material spit out, and achieve the goals of reducing the floating of pigments, solving discoloration, and stabilizing solubility Effect

Inactive Publication Date: 2020-03-17
东莞大宝化工制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, water-based decorative coatings also have some problems that are difficult to solve, especially the discoloration of the paint film due to the color and oil of the material caused by the refurbishment and poor wood quality (rotten wood, medium density fiberboard, etc.)
[0004] In the prior art, traditional water-based coatings solve such problems by increasing the crosslinking density of the coating film, but this method often requires multiple recoats after sealing the primer to achieve the pigment sealing effect, and sometimes the effect is not ideal

Method used

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  • Waterborne pigment-sealing primer coating and preparation method thereof
  • Waterborne pigment-sealing primer coating and preparation method thereof
  • Waterborne pigment-sealing primer coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A water-based pigment-sealed white base paint, which includes the following raw materials in parts by weight:

[0037]

[0038]

[0039] Wherein, the oily film-forming aid is a composition of oily film-forming aid DPNB and oily film-forming aid TPNB at a mass ratio of 1:1.

[0040] Among them, the dispersant is BYK-190 dispersant; the acrylic emulsion is Dow EXP-6037 acrylic emulsion; the wetting agent is BYK-349 wetting agent; the defoamer is TEGO FOAMEX 822 defoamer; the pH regulator is SOLVAY AN130pH Regulator; thixotropic agent is Dow RM-12W thixotropic agent.

[0041] The preparation method of above-mentioned a kind of water-based pigment-sealed white primer, it may further comprise the steps:

[0042] Step 1. Prepare the first mixture: Stir and mix the titanium dioxide, zinc oxide, dispersant and a part of the water at a speed of 1000 rpm for 12 minutes, then grind to a fineness of ≤25 μ to obtain the first mixture;

[0043] Step 2. Prepare the second mixt...

Embodiment 2

[0048] A water-based pigment-sealed white base paint, which includes the following raw materials in parts by weight:

[0049]

[0050]

[0051] Wherein, the oily film-forming aid is a composition of oily film-forming aid DPNB and oily film-forming aid TPNB at a mass ratio of 0.5:1.5.

[0052] Among them, the dispersant is BYK-190 dispersant; the acrylic emulsion is Dow EXP-6037 acrylic emulsion; the wetting agent is BYK-349 wetting agent; the defoamer is TEGO FOAMEX 822 defoamer; the pH regulator is SOLVAY AN130pH Regulator; thixotropic agent is Dow RM-12W thixotropic agent.

[0053] The preparation method of above-mentioned a kind of water-based pigment-sealed white primer, it may further comprise the steps:

[0054] Step 1. Prepare the first mixture: Stir and mix the formulated amount of titanium dioxide, zinc oxide and dispersant, and a part of water at a speed of 900 rpm for 15 minutes, and then grind to a fineness of ≤25 μ to obtain the first mixture;

[0055] Ste...

Embodiment 3

[0060] A water-based pigment-sealed white base paint, which includes the following raw materials in parts by weight:

[0061]

[0062]

[0063] Wherein, the oily film-forming aid is a composition of oily film-forming aid DPNB and oily film-forming aid TPNB at a mass ratio of 1.5:0.5.

[0064] Among them, the dispersant is BYK-190 dispersant; the acrylic emulsion is Dow EXP-6037 acrylic emulsion; the wetting agent is BYK-349 wetting agent; the defoamer is TEGO FOAMEX 822 defoamer; the pH regulator is SOLVAY AN130pH Regulator; thixotropic agent is Dow RM-12W thixotropic agent.

[0065] The preparation method of above-mentioned a kind of water-based pigment-sealed white primer, it may further comprise the steps:

[0066] Step 1. Prepare the first mixture: Stir and mix the titanium dioxide, zinc oxide, dispersant and a part of the water at a speed of 1100 rpm for 10 minutes and grind to a fineness of ≤25 μ to obtain the first mixture;

[0067] Step 2. Prepare the second mi...

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PUM

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Abstract

The invention relates to the technical field of coatings, and concretely relates to a waterborne pigment-sealing primer coating and a preparation method thereof. The waterborne pigment-sealing primercoating comprises titanium dioxide, zinc oxide, a dispersing agent, water, an acrylic emulsion, a wetting agent, a defoaming agent, a pH regulator, an oily coalescing agent and a thixotropic agent. Acid substances represented by tannic acid, pigments and the like are contained in raw materials, so the coating has strong hydrophilicity and color, and floats on the surface of a paint film along withmoisture in the drying process of the paint film, so that metal oxide zinc oxide is introduced into the formula system, acidic substances are locked in a bottom-layer paint film by utilizing an acid-base reaction mechanism, and the disadvantage of discoloration of the water-based paint film is thoroughly solved. In addition, a zinc salt generated by the reaction is stable, has a low solubility, can stably exist in an aqueous system and has no influence on a final primer coating film. The waterborne pigment-sealing primer coating has the advantages of good pigment sealing effect, no use of a transparent sealing primer, simplification of the decoration process, and good coating effect.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based pigment-sealed white base coating and a preparation method thereof. Background technique [0002] In recent years, the water-based coating industry has developed rapidly. The proportion of water-based coatings in coatings is increasing, and manufacturers and users are paying more attention to the environmental protection characteristics of water-based coatings. Water-based decorative wood coatings have gradually replaced the previous oil-based decorative wood coatings and entered the lives of the majority of users. [0003] However, water-based decorative coatings also have some problems that are difficult to solve, especially the discoloration of the paint film due to the color and oil of the material caused by the refurbishment and poor wood quality (rotten wood, medium density fiberboard, etc.). [0004] In the prior art, traditional water-based paints solve s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/61C09D7/63C09D7/80
CPCC08K2003/2241C08K2003/2296C08K2201/014C09D133/04C09D7/61C09D7/63C09D7/80C08K13/02C08K3/22C08K5/06
Inventor 江世奇
Owner 东莞大宝化工制品有限公司
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