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A kind of anti-formaldehyde self-cleaning wall paint and preparation method thereof

A self-cleaning, wall paint technology, applied in the field of self-cleaning wall paint and its preparation, can solve the problem of difficult curing and removal of formaldehyde, and achieve the effect of realizing biomass killing, improving process performance, and simple process

Active Publication Date: 2022-05-17
GUANGZHOU HAOTE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the prior art, the first object of the present invention is to provide a formaldehyde-resistant self-cleaning wall paint to solve the problem that indoor formaldehyde is difficult to cure and remove

Method used

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  • A kind of anti-formaldehyde self-cleaning wall paint and preparation method thereof
  • A kind of anti-formaldehyde self-cleaning wall paint and preparation method thereof
  • A kind of anti-formaldehyde self-cleaning wall paint and preparation method thereof

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preparation example Construction

[0036] Polychromic acid can be prepared by known electrochemical polymerization method, using aqueous solution of chromotropic acid as electrolyte, sodium hydroxide as supporting electrolyte, glassy carbon electrode as working electrode, and reacting according to conventional electrochemical polymerization process.

[0037] The present invention also adds 10-15 parts of diatomite, diatomaceous earth is a porous substance, and mixing it with film-forming substances and fusion chromic acid can increase the specific surface area of ​​the wall paint surface, and the fusion chromatic acid can be attached in the pores And acrylate film-forming substances can better absorb formaldehyde on the surface of wall paint and provide a place for curing reaction. At the same time, diatomite itself can shorten the drying time, enhance the feel of the film, and increase the wear resistance, scratch resistance and permeability of the coating film.

[0038] Preferably, the acrylate monomer is alk...

Embodiment 1

[0056] Embodiment 1: Preparation of guanidine-containing hydrophilic compound

[0057] Dissolve phosphorus trichloride in tetrahydrofuran solution, lower the temperature to 0°C, slowly add dimethylamino-terminated PEG-600 into the solution, stir the solution at 5°C for 5min, then add 2,6-lutidine , stirring reaction at 5°C; at the same time, serine was added to the tetrahydrofuran solution, and then 2,6-lutidine was added for stirring, and the mixed solution was added to the above reaction solution containing phosphorus trichloride and PEG, at 5°C Stir the reaction, after reacting for 2 hours, add aminopropyl biguanide to the reaction solution, then lower the temperature to 0°C, add sodium bromide and keep the temperature at 0°C, after the addition is complete, raise the temperature to room temperature at room temperature, and stir reaction. Detect that the reaction is complete by TLC, add sodium metabisulfite to consume unreacted oxidant after the reaction is complete, add e...

Embodiment 2

[0060] Heat a mixture of 15 parts by weight of water, 1 part of ammonium persulfate and 0.4 part of sodium dodecylsulfonate to 50°C, add 15 parts of methyl methacrylate, 10 parts of butyl acrylate, and 10 parts of 2-hydroxypropyl acrylate, 1 part of guanidine-containing hydrophilic compound prepared in Example 1, carry out emulsion polymerization reaction 6h under the speed of stirring at 200r / min to obtain polymerized emulsion; 0.5 part of polychromic acid, defoamer Add 0.4 parts, 2 parts of propylene glycol, and 1 part of dodecyl alcohol ester to the polymerized emulsion, stir at a stirring speed of 500r / min to obtain a mixed solution; stir each of 5 parts of kaolin and heavy calcium, 10 parts of diatomaceous earth and 10 parts of deionized water Evenly, add to the above mixture, stir at 900r / min to obtain the mixture; measure pH, 0.4 parts of hydroxyethyl cellulose and 0.1 part of 2-amino 2-methyl-1 propanol are finally added to the mixture, and stir Uniformly, obtain the d...

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Abstract

The invention discloses a formaldehyde-resistant self-cleaning wall paint and a preparation method thereof. The formaldehyde-resistant self-cleaning wall paint includes raw materials: acrylic ester monomer, polychromic acid, dispersant, defoamer, propylene glycol, and synthetic Membrane aids, diatomaceous earth, guanidine-containing hydrophilic compounds, thickeners, deionized water, pH regulators, fillers, by adding polychromic acid to the wall paint as an anti-formaldehyde agent, the wall surface The formaldehyde in contact is cured by chemical reaction; by introducing the guanidine-containing hydrophilic compound into the polymer during the emulsion polymerization of the acrylate monomer, the polyethylene glycol group contained increases the hydrophilicity of the polymer, and the contained The biguanide group can kill biomass and achieve excellent formaldehyde resistance and self-cleaning properties. The method of the invention is simple, does not need a special reaction process, and can be realized relying on the emulsion polymerization reaction.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a formaldehyde-resistant self-cleaning wall paint and a preparation method thereof. Background technique [0002] Formaldehyde is a colorless and volatile harmful gas that will continuously irritate human skin, respiratory mucosa, tissue cells, etc. It is one of the potential strong mutagen and is identified as carcinogenic and teratogenic. The formaldehyde in the room mainly comes from the furniture, floors, paints, detergents, etc. commonly used in our lives. The binder used in the preparation process of these products contains formaldehyde, which will slowly volatilize in the later stage, thus making the room The formaldehyde in the room reaches a certain concentration, and the newly decorated room often has a higher formaldehyde content. Moreover, the release period of formaldehyde can be as long as several years to more than ten years, and it is difficult to remove it in a short tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D5/14C09D7/65C09D7/61
CPCC09D151/08C09D5/14C09D7/65C09D7/61C09D7/70C08L101/00C08K3/346C08K7/26Y02A50/20
Inventor 符思廖位红梁巧敏傅国景
Owner GUANGZHOU HAOTE CHEM CO LTD
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