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Texture coating composition capable of reducing indoor formaldehyde content
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A composition and coating technology, applied in building construction, building material processing, construction, etc., can solve problems such as incomplete removal of formaldehyde
Active Publication Date: 2019-12-24
NIPPON PAINT CHINA
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Activated charcoal works well, but like other methods, it cannot completely remove formaldehyde from the air
Method used
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preparation example Construction
[0137] The present invention provides a method for preparing the coating composition. The method includes the steps:
[0138] (a) Providing a first mixture and a second mixture, wherein,
[0139] (a-1) The first mixture is prepared as follows: under stirring conditions, water, first thickener, pH adjuster, defoamer, dispersant, wetting agent, and pigments are mixed to obtain First mixture
[0140] (a-2) The second mixture is prepared as follows: In the first mixture, a film-forming substance, a cosolvent, a film-forming aid, an antifungal agent, a preservative, a second thickener, and water are added to the mixture , To obtain a second mixture;
[0141] (b) Under stirring conditions, sand is added to the second mixture to obtain the coating composition according to the first aspect of the present invention.
[0142] In another preferred example, in the step (a-1), the stirring speed of the stirring is 1200-1800 rpm, preferably 600-900 rpm.
[0143] In another preferred embodiment, in t...
Embodiment 1
[0162] Example 1 Texture coating composition 1
[0163] Put 6 parts by weight of water into the dispersing tank, stir with a dispersing disc, and control the speed at 300-500 revolutions per minute; add 0.4 parts by weight of hydroxyethyl cellulose thickener and 0.1 parts by weight of organic amine pH adjuster in turn , 0.3 parts by weight of the combination of polydimethylsiloxanedefoamer and paraffin-based mineral oildefoamer (the weight ratio of the two is 1:2), 0.3 parts by weight of polycarboxylate anionic dispersant, 0.3 Parts by weight of non-ionic wetting agent, 4 parts by weight of rutiletitanium dioxide, 6 parts by weight of calciumcarbonate and kaolin, etc., add 2 parts by weight of water, increase the speed to 1200-1800 rpm, high-speed dispersion for 15±3 minutes, and obtain The first mixture; then the rotation speed is reduced to 600-800 revolutions per minute, and then 20 parts by weight of functional acrylic emulsion (particle size 100-200nm, grafting degree ≥ ...
Embodiment 2
[0165] Same as Example 1, the difference is: 5 parts of 20-30 mesh white sand and 45 parts of 80-120 mesh white sand are changed to 20 parts of 40-80 mesh white sand and 30 parts of 80-120 mesh white sand.
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Abstract
The invention relates to a texture coating composition capable of reducing indoor formaldehyde content. Specifically, the invention provides a coating composition. The composition is prepared from, byweight, 4-20 parts of pigment and filler, 10-30 parts of film forming matter, 3-6 parts of auxiliaries, 0-10 parts of coarse sand, 30-70 parts of fine sand and 10-30 parts of water, wherein the particle size of the coarse sand ranges from 10 meshes to 30 meshes, and the particle size of the fine sand ranges from 40 meshes to 250 meshes. The invention also discloses a preparation method and application of the coating composition. The coating composition not only has a very good wall surface protection function and various texture decoration effects, but also has adsorption and decomposition effects on formaldehyde, and meets various requirements of consumers.
Description
Technical field [0001] The invention relates to the field of coatings, in particular to a texture coating composition capable of reducing indoor formaldehyde content. Background technique [0002] As consumers have higher and higher requirements for environmental protection, functionality and decoration of coatings, most traditional coatings are far from being able to meet consumer requirements. At the same time, economic development promotes people's awareness of environmental protection, and the issue of environmental quality has received widespread attention. Consumers use a large number of decoration materials to improve their quality of life, while also causing the continuous deterioration of indoor air quality. As citizens are increasingly concerned about the environmental protection of home building materials, and formaldehyde is one of the main pollution sources of indoor decoration, its harm to humans , Especially the harm to the elderly, children and pregnant women wit...
Claims
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