CN112812631A - Water-soluble water-based paint and preparation method thereof - Google Patents
Water-soluble water-based paint and preparation method thereof Download PDFInfo
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- CN112812631A CN112812631A CN202010030942.XA CN202010030942A CN112812631A CN 112812631 A CN112812631 A CN 112812631A CN 202010030942 A CN202010030942 A CN 202010030942A CN 112812631 A CN112812631 A CN 112812631A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The embodiment of the invention provides a water-soluble water-based paint which is a single-component paint, and when the water-soluble water-based paint is used, a water diluent is supplemented, and the water-soluble water-based paint is baked and dried at a low temperature. The single-component paint comprises the following raw materials in percentage by mass: 50-75% of thermoplastic water-soluble acrylic resin; 2 to 26 percent of pigment; 2-6% of a dispersant; 0.2 to 0.5 percent of wetting and leveling agent; 0.1 to 0.3 percent of defoaming agent; 2-5% of cosolvent; the balance being water. The invention also provides a corresponding preparation method. By implementing the invention, the coating is easy to be washed by water without residue, can play the functions of temporary protection and temporary decoration, can improve the reuse rate of toys, and is economic and environment-friendly.
Description
Technical Field
The invention relates to the technical field of paint preparation, in particular to a water-soluble water-based paint and a preparation method thereof, which are suitable for being used as paints for spraying, roller painting, silk-screen printing and the like on various materials such as plastics, metals, glass and the like.
Background
The water-soluble water-based paint product has the characteristics of easy washing, no residue, wide application range and low VOC. The characteristics promote some manufacturers needing temporary protection products to change the traditional hand sticker process into a process of coating temporary protection paint, so that the production efficiency is improved. Due to the characteristics of the toy products such as color diversity, easy scratching and soiling by children and the like, the requirement of users on the reuse rate of the plastic toy products is higher and higher. The prior oil paint mostly adopts an organic solvent as a diluent, and the VoC content of the prior oil paint is as high as 500-700g/L, and the VoC content is high, so that the prior oil paint is difficult to meet the current increasingly severe environmental protection standard. And most organic solvents have intolerable strong odor and certain toxicity hazard, so that workers exposed to the working environment of the organic solvents are injured.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide the water-soluble water-based paint and the preparation method thereof, the paint is easy to wash by water and has no residue, the temporary protection and temporary decoration functions can be realized, the reuse rate of toys can be improved, and the water-soluble water-based paint is economical and environment-friendly.
In order to solve the technical problems, one aspect of the present invention provides a water-soluble water-based paint, which is prepared by uniformly mixing a single-component paint and a water diluent according to a predetermined mass ratio before use, wherein the single-component paint comprises the following raw materials by mass:
50-75% of thermoplastic water-based acrylic resin;
2 to 26 percent of pigment;
2-6% of a dispersant;
0.2 to 0.5 percent of wetting and leveling agent;
0.1 to 0.3 percent of defoaming agent;
5-10% of cosolvent;
the balance of water;
further, the single-component paint and the water diluent are mixed uniformly according to a predetermined mass ratio before use, and the mass ratio of the components is single-component paint: 100 parts of water: 30 to 50 of
Furthermore, the raw materials of the coating also comprise an anti-settling agent with the mass percentage content of 0.3-0.5%.
Further, the water is deionized water or purified water.
Further, the raw materials of the single-component paint also comprise 1-2% of extinction filler in percentage by mass.
Further, the cosolvent in the single-component paint is an alcohol solvent.
Further, the adopted pigment is titanium dioxide, organic pigment or a mixture of at least one of titanium dioxide and organic pigment.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention obtains the water-soluble water-based spraying coating by mixing the single-component paint and the water diluent according to the preset mass ratio before use. The single-component paint is formed by taking special thermoplastic water-soluble acrylic resin as a main component and matching water-soluble pigment color paste and an alcohol cosolvent, so that the paint can form a coating film which has certain surface hardness, adhesion and decoration effects and can be easily washed away by water after being dried, and the covered gorgeous patterns, symbols or numbers are exposed after being washed away by water, so that the product finally achieves the anti-counterfeiting purpose, and the functions of temporary protection and temporary decoration can be achieved.
The paint provided by the embodiment of the invention has wide application range and strong economic applicability, and can meet the matching functions of various materials and various types of primers. The finish paint is a layer of water-soluble paint, has certain hardness and adhesive force, and has various colors and decorativeness. Therefore, after the toy meets the first play function of the children, the high-performance color coating at the bottom of the toy can meet the play function of the children again after being washed by water, so that the repeated utilization rate of the toy is improved; the function that can replace traditional manual sticker to carry out interim protection improves the production efficiency of product.
The paint provided by the embodiment of the invention has good matching performance to various materials and primers and wide application range. Can meet the requirement of direct finishing or priming paint finishing on materials such as plastics, metals, glass and the like which are difficult to adhere. The matched primer can be water-based or oil-based paint with various colors. The characteristic greatly improves the application range of the product and enhances the competitiveness of similar products;
more importantly, compared with the traditional oil paint product, the product of the invention is a water-based product paint, and most of the diluent is deionized water, so that the low VOC requirement of the paint on the aspect of environmental protection standard can be met. The VoC content of the water-based paint provided by the embodiment of the invention can be effectively reduced by 30-40%, and the water-based paint is green and environment-friendly and can meet increasingly severe environment-friendly standards.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It is to be understood that the following illustrative embodiments and description are only intended to illustrate the present invention, and are not intended to limit the present invention, and features of the embodiments and examples of the present invention may be combined with each other without conflict.
One embodiment of the invention provides a water-soluble water-based spray coating, which is prepared by uniformly mixing a single-component paint and a water diluent according to a predetermined mass ratio before use, wherein the single-component paint comprises the following components in percentage by mass:
50-75% of thermoplastic water-based acrylic resin;
2 to 26 percent of pigment;
2-6% of a dispersant;
0.2 to 0.5 percent of wetting and leveling agent;
0.1 to 0.3 percent of defoaming agent;
2-5% of cosolvent;
the balance being water.
The embodiment of the invention obtains the water-soluble water-based spraying coating by uniformly mixing the single-component paint and the water diluent according to the preset mass ratio before use. And a thermoplastic water-based acrylic resin is used as a main component of the single-component paint. The component has the characteristics of instant dissolution when meeting water, easy washing, no residue, certain hardness, good adhesion to various materials and the like. Therefore, the water-soluble water-based paint meets the requirements of specific customers on improving the production efficiency and the requirements of toy customers on improving the reuse rate of toys.
The choice of the host resin is particularly important in the present invention. Firstly, the plastic toys cannot be baked at high temperature because the plastic toys are dried and solidified. Two-component curing (not easy to wash with water and no residue) cannot be used, which freezes the host resin on the aqueous self-drying resin. Thermoplastic waterborne acrylic resins are good candidates. Considering the function of easy washing, the thermoplastic water-based acrylic resin needs to be modified, and a large amount of hydrophilic groups are introduced for modification. Finally, as a certain hardness and good adhesive force are required to meet the first use function of the toy, the thermoplastic water-based acrylic resin needs to introduce a certain rigid group and meet the requirements of moderate overall average molecular weight and about 40 ℃ lower or not higher than TG point; the dispersant in the single-component paint can play a role in wetting, dispersing and stabilizing the pigment; the leveling agent can promote the surface of the coating to be flat and uniform; the defoaming agent can enable a water-based system to be easy to defoam and inhibit foams, and avoid the phenomena of pinholes and foaming on the surface; the cosolvent can promote the micro-droplets of the coating polymer to be dissolved and fused into a continuous film, and the film is gradually volatilized and dissipated after forming the film, and can also play a role in regulating the volatilization speed of the coating. The flatting agent is mainly used for adjusting the surface gloss of a paint film to be soft and has the thixotropic sagging effect. The anti-settling agent can improve the rheological property of the coating and is beneficial to the production, storage and construction of the coating. The paint provided by the embodiment of the invention has strong economy, and particularly, compared with the traditional paint product through detection, the paint provided by the embodiment of the invention has the advantages that the VoC content can be effectively reduced by 30-40%, the paint is green and environment-friendly, and increasingly severe environment-friendly standards can be met.
In this embodiment, the pigment used may be titanium dioxide, an organic pigment, or a mixture of at least one of titanium dioxide and an organic pigment. When a mixture of titanium dioxide and an organic pigment is used, the mass percentage of the organic pigment can be 2-6% and the mass percentage of the titanium dioxide is correspondingly 16-20%. By adopting titanium dioxide or a mixture of titanium dioxide and organic pigment, the color of the product can be well set according to needs to realize diversification of the color of the product.
In another embodiment of the invention, the raw materials of the single-component paint also comprise a wetting and leveling agent with the mass percent content of 0.2-0.5%. In the embodiment, by adding the wetting and leveling agent, the obtained coating can be well wetted with the substrate, the coating is uniformly distributed on the substrate, and various surface defects are reduced. Such as shrinkage cavity, fish eye, orange peel, etc.
In another embodiment of the invention, the raw materials of the single-component paint also comprise 0.1-0.3% of defoaming agent by mass percentage. In the embodiment, the defoaming agent is added, so that the generated bubbles of the obtained coating can be reduced in the construction and storage processes, the generated bubbles can be eliminated, and finally, the surface of a paint film has no bubbles, no pinholes and other surface defects.
In another embodiment of the invention, the raw materials of the single-component paint also comprise a flatting agent with the mass percent content of 1-2%. The coating obtained by the method can obtain lower surface gloss and good soft feeling by adding the flatting agent, has a certain thixotropic anti-sagging effect, and reduces the sagging phenomenon in construction.
In another embodiment of the invention, the raw materials of the single-component paint also comprise 0.3-0.5% of anti-settling agent by mass percentage. In the embodiment, the anti-settling agent is added, so that the pigment with high specific gravity in the obtained coating can be suspended, the pigment is prevented from settling, the uniform dispersion state can be maintained for a longer time, and the shelf life of the coating is longer.
In another embodiment of the present invention, the water is deionized water or purified water. By adopting deionized water or purified water, the raw material source is wide, and the raw material cost is reduced. Moreover, water is used as a solvent to replace the traditional benzene solvents, and the VoC is not contained, so that the VoC content of the finished paint can be effectively reduced.
In another embodiment of the invention, the raw materials of the single-component paint also comprise 1-2% of extinction filler by mass percent. The extinction filler is added into the paint, so that the effects of filling, rheological control, solvent release, gloss reduction and the like are achieved, and the quality of the paint is improved.
In another embodiment of the invention, the cosolvents in the single-component paint are all alcohol solvents. The alcohol solvent as a cosolvent can effectively promote the film formation of the coating, accurately adjust the volatilization speed of the coating, and effectively improve the film quality and the film formation speed of the coating.
The invention also provides a plurality of examples of different formulas, wherein the mass percent of each component of the single-component paint in each example is shown in the following table:
although the above embodiments all use single-component paints obtained by adding organic pigments or titanium dioxide as an alternative, in practical applications, the single-component paints can be mixed according to the requirement and according to the preset proportion to obtain the component A with the required color.
Correspondingly, the embodiment of the invention also provides a preparation method of the water-soluble water-based paint, which comprises the following steps:
step S1, preparing a single-component paint, wherein the raw materials of the single-component paint comprise the following components in percentage by mass:
50-75% of thermoplastic water-based acrylic resin;
2 to 26 percent of pigment;
2-6% of a dispersant;
0.2 to 0.5 percent of wetting and leveling agent;
0.1 to 0.3 percent of defoaming agent;
2-5% of cosolvent;
the balance of water;
Step S2, mixing the prepared single-component paint and water diluter uniformly before use to obtain water-soluble water-based spraying paint;
the step S1 of preparing the one-component paint includes the following steps:
step S11, mixing deionized water, a dispersing agent and a defoaming agent at a low speed in advance according to a corresponding formula, then slowly adding a pigment for wetting and dispersing at a medium speed for 20-30min, and then grinding by a sand machine to obtain slurry with the fineness of below 10 um;
step S12, adding water-based acrylic resin into the ground slurry for stabilization, and uniformly stirring at a medium speed;
step S13, continuously adding the anti-settling agent, and uniformly stirring at a medium speed;
step S14, continuously adding the wetting leveling agent, and uniformly stirring at a medium speed;
step S15, continuously adding the flatting agent, and uniformly stirring at a medium and high speed;
step S16, continuously adding the cosolvent, and uniformly stirring at a medium speed;
step S17, deionized water is used to adjust the viscosity to the specified viscosity, and the single-component paint is obtained.
According to the above formula and preparation method, the single-color oil of the required color system of white, black, red, yellow and blue color systems can be prepared, the required color is firstly adjusted by using single-component paint before construction, and water diluter is added according to the mass ratio for even mixing to prepare the water-soluble water-based spraying paint.
For more, reference may be made to the foregoing description of the water-soluble aqueous spray coating, and details will not be given here.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention obtains the water-soluble water-based spraying coating by mixing the single-component paint and the water diluent according to the preset mass ratio before use. The single-component paint is formed by taking special thermoplastic water-soluble acrylic resin as a main component and matching water-soluble pigment color paste and an alcohol cosolvent, so that the paint can form a coating film which has certain surface hardness, adhesion and decoration effects and can be easily washed away by water after being dried, and the covered gorgeous patterns, symbols or numbers are exposed after being washed away by water, so that the product finally achieves the anti-counterfeiting purpose, and the functions of temporary protection and temporary decoration can be achieved.
The paint provided by the embodiment of the invention has wide application range and strong economic applicability, and can meet the matching functions of various materials and various types of primers. The finish paint is a layer of water-soluble paint, has certain hardness and adhesive force, and has various colors and decorativeness. Therefore, after the toy meets the first play function of the children, the high-performance color coating at the bottom of the toy can meet the play function of the children again after being washed by water, so that the repeated utilization rate of the toy is improved; the function that can replace traditional manual sticker to carry out interim protection improves the production efficiency of product.
The paint provided by the embodiment of the invention has good matching performance to various materials and primers and wide application range. Can meet the requirement of direct finishing or priming paint finishing on materials such as plastics, metals, glass and the like which are difficult to adhere. The matched primer can be water-based or oil-based paint with various colors. The characteristic greatly improves the application range of the product and enhances the competitiveness of similar products;
more importantly, compared with the traditional oil paint product, the product of the invention is a water-based product paint, and most of the diluent is deionized water, so that the low VOC requirement of the paint on the aspect of environmental protection standard can be met. The VoC content of the water-based paint provided by the embodiment of the invention can be effectively reduced by 30-40%, and the water-based paint is green and environment-friendly and can meet increasingly severe environment-friendly standards.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The water-soluble water-based paint is characterized by being prepared by uniformly mixing a single-component paint and a water diluent according to a preset mass ratio before use, wherein the single-component paint comprises the following components in percentage by mass:
50-75% of thermoplastic water-based acrylic resin;
2 to 26 percent of pigment;
2-6% of a dispersant;
0.2 to 0.5 percent of wetting and leveling agent;
0.1 to 0.3 percent of defoaming agent;
2-5% of cosolvent;
the balance being water.
2. The water-soluble water-based paint according to claim 1, wherein the water diluent is mixed uniformly according to a predetermined mass ratio before use, and the mass ratio of the single-component paint to the water diluent is as follows: 100 parts of water: 30 to 50.
3. The water-soluble water-based paint as claimed in claim 2, wherein the raw materials of the one-component paint further comprise 0.3-0.5% by mass of an anti-settling agent.
4. A water-soluble water-based paint according to any one of claims 1 to 3, wherein the water is deionized water or purified water.
5. A water-soluble water-based paint according to any one of claims 1 to 3, wherein the raw material of the one-component paint further comprises a matting filler in an amount of 1 to 2% by mass.
6. A water-soluble water-based paint as claimed in any one of claims 1 to 3, wherein the co-solvents in the single-component paint are all alcohol solvents.
7. A water-soluble water-based paint according to any one of claims 1 to 3, characterized in that the pigment used is titanium dioxide, an organic pigment or a mixture of at least one of titanium dioxide and an organic pigment.
8. The preparation method of the water-soluble water-based paint is characterized by comprising the following steps:
step S1, preparing a single-component paint, wherein the raw materials of the single-component paint comprise the following components in percentage by mass:
50-75% of thermoplastic water-based acrylic resin;
2 to 26 percent of pigment;
2-6% of a dispersant;
0.2 to 0.5 percent of wetting and leveling agent;
0.1 to 0.3 percent of defoaming agent;
2-5% of cosolvent;
the balance of water;
step S2, mixing the prepared single-component paint and the water thinner evenly before use to obtain the water-soluble water-based paint.
9. The method of claim 8, wherein the step S1 further comprises:
step S11, mixing deionized water, a dispersing agent and a defoaming agent at a low speed in advance according to a corresponding formula, then slowly adding a pigment for wetting and dispersing at a medium speed for 20-30min, and then grinding by a sand machine to obtain slurry with the fineness of below 10 um;
step S12, adding water-based acrylic resin into the ground slurry for stabilization, and uniformly stirring at a medium speed;
step S13, continuously adding the anti-settling agent, and uniformly stirring at a medium speed;
step S14, continuously adding the wetting leveling agent, and uniformly stirring at a medium speed;
step S15, continuously adding the flatting agent, and uniformly stirring at a medium and high speed;
Step S16, continuously adding the cosolvent, and uniformly stirring at a medium speed;
step S17, deionized water is used to adjust the viscosity to a specified value, and a single-component paint is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010030942.XA CN112812631A (en) | 2020-01-13 | 2020-01-13 | Water-soluble water-based paint and preparation method thereof |
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| CN202010030942.XA CN112812631A (en) | 2020-01-13 | 2020-01-13 | Water-soluble water-based paint and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130102700A1 (en) * | 2011-10-21 | 2013-04-25 | Elmer's Products, Inc. | Liquid glue formulated with acrylic emulsions |
| CN105907201A (en) * | 2016-04-12 | 2016-08-31 | 中山市润宜汽车用品有限公司 | Environmentally-friendly aqueous spray paint and preparation method thereof |
| CN106566341A (en) * | 2016-11-10 | 2017-04-19 | 青岛益群漆业集团有限公司 | Aqueous children toy paint |
| CN107603311A (en) * | 2017-10-31 | 2018-01-19 | 湖北工程学院 | A kind of easily wash type drawing pigment and preparation method thereof |
-
2020
- 2020-01-13 CN CN202010030942.XA patent/CN112812631A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130102700A1 (en) * | 2011-10-21 | 2013-04-25 | Elmer's Products, Inc. | Liquid glue formulated with acrylic emulsions |
| CN105907201A (en) * | 2016-04-12 | 2016-08-31 | 中山市润宜汽车用品有限公司 | Environmentally-friendly aqueous spray paint and preparation method thereof |
| CN106566341A (en) * | 2016-11-10 | 2017-04-19 | 青岛益群漆业集团有限公司 | Aqueous children toy paint |
| CN107603311A (en) * | 2017-10-31 | 2018-01-19 | 湖北工程学院 | A kind of easily wash type drawing pigment and preparation method thereof |
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Application publication date: 20210518 |
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