Chair-mark-resistant non-scratching black water-based latex paint and preparation method thereof

Abstract

The invention relates to a chair-mark-resistant non-scratching black water-based emulsion paint and a preparation method thereof, and relates to the technical field of paints.The chair-mark-resistant non-scratching black water-based emulsion paint is prepared from, by weight, 10-30 parts of water, 20-60 parts of emulsion, 16-24 parts of hard powder, 1-5 parts of soft powder and 2.0-12 parts of auxiliaries; wherein the emulsion is a large-particle-size acrylic emulsion, and the particle size of polymer particles is greater than 1200nm; the hard powder is powder of which the Mohs hardness is greater than or equal to 6; the soft powder is powder with the Mohs hardness smaller than 6 and the like. On the basis of the prior art, the problem that soft powder cannot be added is solved, the large-particle-size acrylic emulsion is used instead, the large-particle-size emulsion can better reduce force directly acting on the powder, a paint film formed by the soft powder is not prone to blackening under the action of the force, and the paint film is not prone to be damaged. Therefore, the prepared latex paint is excellent in black scratch resistance.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to a chair mark-resistant and non-scratch black water-based latex paint and a preparation method thereof. Background Art

[0002] Latex paint, with its low cost, excellent decorative performance and outstanding protective ability, has long occupied an important position in the field of architectural decoration. It is widely used in the coating of various indoor and outdoor walls, adding rich colors and textures to living and working spaces. However, in actual use, the problem of latex paint surface being easily damaged has gradually become prominent, especially in the face of some small accidents in daily life, such as slight scratches on furniture (such as chairs) or unintentional traces of signature pens, which often leave difficult-to-remove black marks on the originally smooth and flawless walls. These flaws not only destroy the overall aesthetics, but also affect the mood of the residents and the harmony of the environment.

[0003] It is particularly noteworthy that traditional latex paints often lack effective resistance mechanisms when facing such scratch challenges, making black marks an unavoidable "scar". This not only limits the application of latex paints in high-demand decorative scenes, but also prompts the market to have an urgent demand for paint products with higher durability and scratch resistance.

[0004] In this context, developing a water-based latex paint product that can effectively resist daily minor physical damage such as scratches on chairs and signing pens, and will not leave black marks even if scratched, will undoubtedly fill the market gap and meet consumers' pursuit of high-quality, high-durability decorative materials. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a chair mark-resistant and non-scratch black water-based latex paint and a preparation method thereof.

[0006] In a first aspect, the present invention provides a chair-mark-resistant and non-scratch black water-based latex paint, comprising the following raw materials in parts by weight: 10-30 parts of water, 20-60 parts of emulsion, 16-24 parts of hard powder, 1-5 parts of soft powder, and 2.0-12 parts of additives;

[0007] Wherein, the emulsion is a large-particle acrylic emulsion, and the particle size of the polymer particles is greater than 1200nm;

[0008] The hard powder is a powder with a Mohs hardness of ≥6;

[0009] The soft powder is a powder with a Mohs hardness of less than 6, and the weight of the soft powder accounts for ≤5% of the weight of the anti-chair mark and non-scratch black water-based latex paint.

[0010] Furthermore, the raw materials are included in the following weight proportions: 10-25 parts of water, 25-55 parts of emulsion, 20-24 parts of hard powder, 1-3 parts of soft powder, and 5-12 parts of auxiliary agent.

[0011] Furthermore, the auxiliary agent includes one or more of a dispersant, a wetting agent, a film-forming aid, an antifreeze-thaw aid, a pH regulator, a thickener, and a preservative.

[0012] Furthermore, the hard powder includes one or more of titanium dioxide and silicon dioxide.

[0013] Furthermore, the soft powder includes one or more of kaolin, heavy calcium powder, talcum powder, mica powder, and feldspar powder.

[0014] Furthermore, the emulsion is an acrylic emulsion with a particle size greater than 1200 nm.

[0015] In a second aspect, the present invention provides a method for preparing the chair mark-resistant and non-scratch black water-based latex paint according to any one of the first aspects, the preparation method comprising the following steps:

[0016] Add part of water and part of the auxiliary agent into a dispersion tank and stir evenly to obtain a first mixed material;

[0017] Adding hard powder and soft powder to the first mixed material and stirring them evenly to obtain a second mixed material;

[0018] Adding the emulsion to the second mixed material and stirring the mixture evenly to obtain a third mixed material;

[0019] Add the remaining auxiliary agent and the remaining water to the third mixed material and stir evenly to obtain the chair mark-resistant and non-scratch black latex paint.

[0020] The above technical solution provided by the embodiment of the present invention has at least the following advantages compared with the prior art:

[0021] The embodiment of the present invention provides a chair mark-resistant and non-scratch-black water-based latex paint. Based on the patent application No. 2023116572620, a scratch-resistant and non-scratch-black water-based latex paint and its preparation method, this patent improves the problem that soft powder cannot be added, and uses large-particle acrylic emulsion instead. The large-particle acrylic emulsion can better reduce the force directly acting on the powder, so that the paint film formed by the soft powder is not prone to blackening when subjected to force, thereby making the prepared latex paint have excellent scratch resistance. The scratch resistance rate of the chair mark-resistant and non-scratch-black water-based latex paint provided by the present invention can meet the Level 1 requirement in Q / JBLKJ84-2024 "Synthetic Resin Emulsion Interior Wall Anti-scratch Black Paint", and the scratch resistance rate is ≥98%. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0024] In a first aspect, the present invention provides a chair-mark-resistant and non-scratch black water-based latex paint, comprising the following raw materials in parts by weight: 10-30 parts of water, 20-60 parts of emulsion, 16-24 parts of hard powder, 1-5 parts of soft powder, and 2.0-12 parts of additives;

[0025] Wherein, the emulsion is a large-particle acrylic emulsion, and the particle size of the polymer particles is greater than 1200nm;

[0026] The hard powder is a powder with a Mohs hardness of ≥6;

[0027] The soft powder is a powder with a Mohs hardness of less than 6, and the weight of the soft powder accounts for ≤5% of the weight of the anti-chair mark and non-scratch black water-based latex paint.

[0028] This patent, based on patent application No. 2023116572620, a kind of scratch-resistant black water-based latex paint and its preparation method, improves the problem that soft powder cannot be added, and uses large-particle acrylic emulsion instead. The large-particle acrylic emulsion can better reduce the force directly acting on the powder, so that the paint film formed by the soft powder is not prone to blackening when subjected to force, so that the prepared latex paint has excellent scratch resistance. The scratch resistance rate of the chair mark-resistant and non-scratch-resistant water-based latex paint provided by the present invention can meet the level 1 requirement in Q / JBLKJ84-2024 "Synthetic resin emulsion interior and exterior wall scratch-resistant black coating", and the scratch resistance rate is ≥98%.

[0029] In some specific embodiments, the raw materials are included in the following weight proportions: 10-25 parts of water, 25-55 parts of emulsion, 20-24 parts of hard powder, 1-3 parts of soft powder, and 5-12 parts of auxiliary agent.

[0030] In some specific embodiments, the auxiliary agent includes one or more of a dispersant, a wetting agent, a film-forming aid, an antifreeze-thaw aid, a pH regulator, a thickener, and a preservative.

[0031] In some specific embodiments, the hard powder includes one or more of titanium dioxide and silicon dioxide.

[0032] In some specific embodiments, the soft powder includes one or more of kaolin, heavy calcium powder, talcum powder, mica powder, and feldspar powder.

[0033] In some specific embodiments, the emulsion is an acrylic emulsion with a particle size greater than 1200 nm.

[0034] In a second aspect, the present invention provides a method for preparing the chair mark-resistant and non-scratch black water-based latex paint according to any one of the first aspects, the preparation method comprising the following steps:

[0035] Add part of water and part of the auxiliary agent into a dispersion tank and stir evenly to obtain a first mixed material;

[0036] Adding hard powder and soft powder to the first mixed material and stirring them evenly to obtain a second mixed material;

[0037] Adding the emulsion to the second mixed material and stirring the mixture evenly to obtain a third mixed material;

[0038] Add the remaining auxiliary agent and the remaining water to the third mixed material and stir evenly to obtain the chair mark-resistant and non-scratch black latex paint.

[0039] The raw materials involved in the chair mark-resistant and non-scratch black water-based latex paint and the preparation method thereof provided by the embodiments of the present invention, unless otherwise specified or explained, can be directly commercially available products or can be homemade according to existing publicly available preparation methods; at the same time, the operating steps involved in the preparation method of the chair mark-resistant and non-scratch black water-based latex paint, unless otherwise specified or explained, can be carried out according to the conventional preparation methods of coatings in the art or using existing equipment, and will not be described one by one here.

[0040] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods in the following examples that do not specify specific conditions are usually measured according to national standards. If there is no corresponding national standard, then the conditions recommended by the manufacturer are followed.

[0041] Example 1

[0042] This example provides a chair-mark-resistant, non-scratch black water-based latex paint, comprising the following raw materials in parts by weight:

[0043] 15.3 parts of water, 55 parts of emulsion, 20 parts of hard powder (specifically titanium dioxide), 3 parts of soft powder (specifically kaolin), 0.2 parts of cellulose thickener, 0.6 parts of dispersant, 0.1 parts of wetting agent, 0.6 parts of antifreeze-thaw aid, 4 parts of film-forming aid, 0.1 parts of pH regulator, 0.8 parts of defoaming agent, 0.3 parts of preservative;

[0044] The emulsion is ROSF1917 emulsion, and the particle size of the polymer particles is 1500-2000nm;

[0045] The cellulose thickener is Asialand HBR250;

[0046] The dispersant is Gaotai P30;

[0047] The wetting agent is Clariant LCN407;

[0048] The antifreeze-thaw aid is ethylene glycol;

[0049] The film-forming aid is coatol290plus from Chemoxy;

[0050] The pH regulator is a 10% sodium hydroxide aqueous solution;

[0051] The defoamer is NXZ from Clariant;

[0052] The preservative is MBS5050 from THOR.

[0053] The preparation method of the above-mentioned chair mark-resistant and non-scratch black water-based latex paint comprises the following steps:

[0054] Step 1: Add 14 parts of water, cellulose thickener, dispersant, wetting agent, antifreeze-thaw aid, film-forming aid, and 0.2 parts of defoamer into the dispersion tank and stir evenly;

[0055] Step 2: Continue to add titanium dioxide and kaolin into the dispersion tank, stir thoroughly and disperse evenly;

[0056] Step 3: Continue to add emulsion into the dispersion tank and stir evenly;

[0057] Step 4: Continue to add preservatives, 0.6 parts of defoaming agent, and 1.3 parts of water into the dispersion tank, stir thoroughly, and disperse evenly to obtain chair mark-resistant and non-scratch black latex paint.

[0058] The chair mark-resistant and non-scratch-blackening water-based latex paint prepared in Example 1 has an anti-scratch blackening rate of ≥98%, specifically 99%, measured according to Q / JBLKJ84-2024.

[0059] Example 2

[0060] This example provides a chair mark-resistant and non-scratch black water-based latex paint and a preparation method thereof. The only difference from Example 1 is that the content of the emulsion, titanium dioxide, and additives are changed, specifically including the following raw materials in parts by weight: 21.3 parts of water, 50 parts of emulsion, 20 parts of hard powder, 2 parts of soft powder, and 6.7 parts of additives; the remaining steps and parameters are the same.

[0061] The chair mark-resistant and non-scratch-resistant water-based latex paint prepared in Example 2 has an anti-scratch rate of ≥98%, specifically 99%, measured according to Q / JBLKJ84-2024.

[0062] Example 3

[0063] This example provides a chair mark-resistant and non-scratch black water-based latex paint and a preparation method thereof. The only difference from Example 1 is that the content of the emulsion, titanium dioxide, and additives is changed. Specifically, the raw materials will be included in the following weight portions: 18.3 parts of water, 54 parts of emulsion, 18 parts of hard powder, 3 parts of soft powder, and 6.7 parts of additives; the remaining steps and parameters are the same.

[0064] The chair mark-resistant and non-scratch-blackening water-based latex paint prepared in Example 3 has an anti-scratch blackening rate of ≥98%, specifically 99%, measured according to Q / JBLKJ84-2024.

[0065] Example 4

[0066] The only difference between this example and Example 1 is that 20 parts of titanium dioxide are adjusted to 18 parts of titanium dioxide + 2 parts of silicon dioxide, and kaolin is adjusted to heavy calcium powder; the remaining steps and parameters are the same.

[0067] The chair mark-resistant and non-scratch-blackening water-based latex paint prepared in Example 4 has an anti-scratch blackening rate of ≥98%, specifically 99%, measured according to Q / JBLKJ84-2024.

[0068] Comparative Example 1

[0069] The difference between this example and Example 1 is that the emulsion is adjusted to a conventional emulsion, specifically, Budford RS313 emulsion; the remaining steps and parameters are the same.

[0070] The chair mark-resistant and non-scratch-resistant water-based latex paint prepared in Comparative Example 1 has an anti-scratch rate of <95% as measured according to Q / JBLKJ84-2024.

[0071] Comparative Example 2

[0072] The only difference between this example and Example 1 is that the soft powder is adjusted to account for 10%, specifically including the following raw materials in parts by weight: 8.3 parts of water, 55 parts of emulsion, 20 parts of hard powder, 10 parts of soft powder, and 6.7 parts of additives; the remaining steps and parameters are the same.

[0073] The chair mark-resistant and non-scratch-resistant water-based latex paint prepared in Comparative Example 2 has an anti-scratch rate of <90% as measured according to Q / JBLKJ84-2024.

[0074] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A chair-mark-resistant, non-scratch black water-based latex paint, characterized in that: The raw materials include the following parts by weight: 10-30 parts of water, 20-60 parts of emulsion, 16-24 parts of hard powder, 1-5 parts of soft powder, and 2.0-12 parts of auxiliary agent; Wherein, the emulsion is a large-particle acrylic emulsion, and the particle size of the polymer particles is greater than 1200nm; The hard powder is a powder with a Mohs hardness of ≥6; The soft powder is a powder with a Mohs hardness of less than 6, and the weight of the soft powder accounts for ≤5% of the weight of the anti-chair mark and non-scratch black water-based latex paint.

2. The chair mark-resistant and non-scratch black water-based latex paint according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 10-25 parts of water, 25-55 parts of emulsion, 20-24 parts of hard powder, 1-3 parts of soft powder and 5-12 parts of auxiliary agent.

3. The chair mark-resistant and non-scratch black water-based latex paint according to claim 1, characterized in that: The auxiliary agent includes one or more of a dispersant, a wetting agent, a film-forming aid, an antifreeze-thaw aid, a pH regulator, a thickener, and a preservative.

4. The chair mark-resistant and non-scratch black water-based latex paint according to claim 1, characterized in that: The hard powder includes one or more of titanium dioxide and silicon dioxide.

5. The chair mark-resistant and non-scratch black water-based latex paint according to claim 1, characterized in that: The soft powder includes one or more of kaolin, heavy calcium powder, talcum powder, mica powder and feldspar powder.

6. The chair mark-resistant and non-scratch black water-based latex paint according to claim 1, characterized in that: The emulsion is an acrylic emulsion with a particle size greater than 1200 nm.

7. A method for preparing the chair mark-resistant and non-scratch black water-based latex paint according to any one of claims 1 to 6, characterized in that: The preparation method comprises the following steps: Add part of water and part of the auxiliary agent into a dispersion tank and stir evenly to obtain a first mixed material; Adding hard powder and soft powder to the first mixed material and stirring them evenly to obtain a second mixed material; Adding the emulsion to the second mixed material and stirring the mixture evenly to obtain a third mixed material; Add the remaining auxiliary agent and the remaining water to the third mixed material and stir evenly to obtain the chair mark-resistant and non-scratch black latex paint.