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Matte type high-staining-resistance coating varnish and preparation method thereof

A finish varnish, anti-fouling technology, applied in biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve the problems of high dosage of film-forming additives, increased coating costs, and decreased environmental protection, etc. Achieve the effect of improving the flatness of the coating film, reducing the adsorption of organic dust, and reducing the static charge

Inactive Publication Date: 2019-06-18
浙江来往新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high glass transition temperature, there is a risk of cracking when used as a finish paint, and the amount of coalescents contained in its formula is often relatively high, which will not only increase the cost of the coating, but also lead to a decline in its environmental protection

Method used

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  • Matte type high-staining-resistance coating varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A matte type highly stain-resistant finish varnish, specifically prepared through the following steps:

[0025] (1) Prepare materials according to the following ratio: butyl acrylate 5.5kg, styrene 3.6kg, methyl methacrylate 20.1kg, isooctyl acrylate 3.4kg, emulsion 22kg, deionized water 17kg, pH regulator 0.2kg, anti 0.21kg mold agent, 0.17kg defoamer, 1.4kg film-forming aid, 1.3kg antifreeze, 0.7kg thickener, 9kg composite inorganic binder, 1.3kg nano-scale anti-fouling agent;

[0026] (2) Pre-emulsification: Under normal temperature and pressure, mix the emulsion and deionized water in the reactor, stir well, then add butyl acrylate, styrene, methyl methacrylate, isooctyl acrylate in turn, and stir well Dissolve evenly to make a pre-emulsion;

[0027] (3) Polymerization: Add composite inorganic binder and nano-fouling anti-fouling agent to the reactor, heat up to 65°C, and stir for 4 hours;

[0028] (4) Add tailings: cool down to 30°C, add pH regulator, antifungal ...

Embodiment 2

[0034] A matte type highly stain-resistant finish varnish, specifically prepared through the following steps:

[0035] (1) Prepare materials according to the following ratio: butyl acrylate 5kg, styrene 3kg, methyl methacrylate 20kg, isooctyl acrylate 3kg, emulsion 21kg, deionized water 15kg, pH regulator 0.1kg, antifungal agent 0.1kg , defoamer 0.1kg, film-forming aid 1kg, antifreeze 1kg, thickener 0.5kg, composite inorganic binder 8kg, nano stain-resistant agent 1kg;

[0036] (2) Pre-emulsification: Under normal temperature and pressure, mix the emulsion and deionized water in the reactor, stir well, then add butyl acrylate, styrene, methyl methacrylate, isooctyl acrylate in turn, and stir well Dissolve evenly to make a pre-emulsion;

[0037] (3) Polymerization: Add composite inorganic binder and nano-scale anti-fouling agent to the reactor, heat up to 70°C, and stir for 3 hours;

[0038] (4) Add tailings: cool down to 40°C, add pH regulator, antifungal agent, defoamer, fi...

Embodiment 3

[0044] A matte type highly stain-resistant finish varnish, specifically prepared through the following steps:

[0045] (1) Prepare materials according to the following ratio: butyl acrylate 6kg, styrene 4kg, methyl methacrylate 22kg, isooctyl acrylate 4kg, emulsion 23kg, deionized water 20kg, pH regulator 0.2kg, antifungal agent 0.3kg , 0.2kg defoamer, 2kg film-forming aid, 1.5kg antifreeze, 1kg thickener, 10kg composite inorganic binder, 1.5kg nano-scale anti-fouling agent;

[0046] (2) Pre-emulsification: Under normal temperature and pressure, mix the emulsion and deionized water in the reactor, stir well, then add butyl acrylate, styrene, methyl methacrylate, isooctyl acrylate in turn, and stir well Dissolve evenly to make a pre-emulsion;

[0047] (3) Polymerization: Add composite inorganic binder and nano-fouling anti-fouling agent to the reactor, heat up to 70°C, and stir for 4 hours;

[0048] (4) Add tailings: cool down to 40°C, add pH regulator, antifungal agent, defo...

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Abstract

The invention relates to matte type high-staining-resistance coating varnish and a preparation method thereof. The matte type high-staining-resistance coating varnish comprises, by weight, 5-10 partsof butyl acrylate, 2-5 parts of styrene, 15-25 parts of methyl methacrylate, 2-5 parts of 2-ethylhexyl acrylate, 20-30 parts of emulsion, 10-30 parts of deionized water, 0.1-0.3 part of pH regulator,0.1-0.3 part of mildew preventive, 0.1-0.2 part of defoaming agent, 0.6-2 parts of coalescing agent, 0.8-1.5 parts of anti-freezing agent, 0.3-1 part of thickening agent, 8-12 parts of compound inorganic adhesive and 0.5-2.0 parts of nano staining-resisting agent. Compared with the prior art, the matte type high-staining-resistance coating varnish and the preparation method thereof have the advantages that the nano staining-resisting agent and the compound inorganic adhesive are added into traditional waterborne matte coating varnish using acrylate copolymer resin as the main component, and the staining resistance of the varnish is improved greatly by the synergistic effect of the nano staining-resisting agent and the compound inorganic adhesive.

Description

technical field [0001] The invention relates to a finish varnish, in particular to a matte high stain-resistant finish varnish and a preparation method thereof. Background technique [0002] In exterior wall architectural coatings, the proportion of water-based coatings is higher, and its formula and construction technology are becoming more and more mature. Water-based paint is generally divided into three parts: primer, intermediate coat and top coat. The top coat is also called overcoat varnish, which is covered on the middle coat to achieve the purpose of dust prevention and pollution prevention. Most of the existing top varnishes use emulsion as the main film-forming substance, and then add water and some functional additives to mix it. It has the advantages of waterproof and breathable, anti-yellowing and high durability. However, because the paint film is often not dense enough, it becomes There will be voids behind the film, and the voids will absorb pollutants thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D133/04C09D5/16C09D7/61C09D7/63C08F265/06C08F220/14
Inventor 张来炳
Owner 浙江来往新材料有限公司
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