Low odor LED-UV wood primer for home decoration and preparation method thereof

Abstract

The low odor LED-UV wood white base paint for home decoration and the preparation method thereof, wherein the low odor LED-UV wood white base paint for home decoration comprises a main agent and a diluent, and the weight ratio of the main agent and the diluent is = 10:1; the construction mode is brushing.The advantages of the LED-UV paint, such as high solid content, no solvent and rapid curing, can be applied to the home decoration market, and through scientific formula design, the prepared product has viscosity suitable for the conventional brushing construction mode of the home decoration market, excellent surface effect, good storage stability (low viscosity for a long time storage without hard sedimentation, no gel and other abnormalities), excellent adhesion, good polishing property, low skin irritation, low odor, high solid content, no solvent, safety and environmental protection.

Description

Technical Field

[0001] This invention belongs to the field of paint, specifically relating to a low-odor LED-UV wood primer for home decoration and its preparation method. Background Technology

[0002] UV-LED (ultraviolet light-emitting diode) is a new type of semiconductor-based UV light source. Compared with traditional UV light sources such as mercury arc lamps and microwave electrodeless lamps, it has many advantages such as long lifespan, high efficiency, good safety, low operating costs, and is mercury-free and ozone-free. It has become a new generation of UV light source and has been widely used in UV adhesives, UV inks, UV coatings, and 3D printing. It has played a role in promoting energy conservation, emission reduction, and environmental protection in photocuring technology, bringing revolutionary changes to the photocuring industry.

[0003] Currently, UV-LED coatings commonly use wavelengths of 385nm, 395nm, and 365nm. However, due to their high cost, these wavelengths are not widely adopted. Their inherent characteristics also present several problems: their wavelengths are concentrated in the long-wavelength range and are relatively singular, resulting in lower energy, weak surface curing, and significant oxygen inhibition. They generally cannot compare to traditional mercury lamp curing. Furthermore, the initiators for longer wavelengths are relatively expensive, contributing to the overall high price. Despite these inherent problems, their advantages, coupled with technological advancements in recent years, have led to successful applications in some fields, such as furniture coatings.

[0004] The paints used in the home decoration market are currently mainly oil-based PU and water-based 1K and 2K paints, which have relatively long drying times and are generally applied 1-3 times a day. Although UV or UV-LED paints are highly efficient and cure in seconds, they are generally used in factories because they require specialized equipment, and such products are not currently available in the home decoration market.

[0005] Analysis of existing UV-LED white coating technologies:

[0006] 1. The coating is intended for factories, and no special requirements or instructions are given regarding the environmental friendliness of the materials (low skin irritation, purity, odor, etc.).

[0007] 2. White UV-LED paint is mostly applied by mechanical roller coating or spraying, and has a high viscosity, making it unsuitable for brush application in the home decoration market.

[0008] 3. Compared to mechanical roller coating and spraying, manual brushing is more prone to introducing air bubbles and brush marks, and therefore requires a higher level of additive system. Summary of the Invention

[0009] The technical problem to be solved by this invention is to provide a low-odor LED-UV wood primer for home decoration and its preparation method. Targeting the retail home decoration market, it utilizes its solvent-free, high-solids-content, and fast-curing characteristics to achieve rapid coating, improving coating efficiency and the safety and environmental friendliness of the coating process. For the brush coating method commonly used in the home decoration market, under the premise of appropriate application viscosity, it achieves a balance between defoaming and leveling properties, ensuring good coating performance and excellent surface effect. The formulation prioritizes low-skin-irritant, high-purity, and low-odor monomers and main resins, and the scientific combination of different reactivity minimizes the odor of the coating itself and after curing, achieving an optimal balance between suitable curing performance and adhesion, as well as excellent safety.

[0010] This invention is a low-odor LED-UV wood white primer for home decoration. It is a white primer that is applied by brushing and can be regarded as a combination of "UV-LED white paint + brushing application method".

[0011] To solve the above problems, the present invention is achieved through the following technical solution:

[0012] The first objective of this invention is:

[0013] A low-odor LED-UV wood primer for home decoration is provided, comprising the following components in parts by weight:

[0014] Main ingredient:

[0015] 25-35 parts of trifunctional low-viscosity polyester, 5-15 parts of tetrafunctional amine-modified polyester, 6-15 parts of neopentyl glycol diacrylate, 0.1-0.5 parts of dispersant, 0.1-0.3 parts of defoamer, 0.1-0.8 parts of leveling agent, 4-6 parts of titanium dioxide, 8-12 parts of talc, 5-15 parts of highly micronized washed kaolin, 3-6 parts of ethyl 2,4,6-trimethylbenzoylphenylphosphonate, 0.5-1.5 parts of phenylbis(2,4,6-trimethylbenzoyl)phosphonium oxide, 0.05 parts of polymerization inhibitor, 3-6 parts of active amine, 8-15 parts of acryloylmorpholine, and 0.2-1 part of anti-settling agent; total weight 100 parts.

[0016] Diluent:

[0017] 100 parts of acryloylmorpholine;

[0018] The weight ratio of the main agent to the diluent is 10:1;

[0019] The weight ratio of main resin to monomer is greater than 1:1;

[0020] The main resin is the total weight of trifunctional low-viscosity polyester and tetrafunctional amine-modified polyester; the monomer is the total weight of propylene oxide neopentyl glycol diacrylate and acryloylmorpholine (including the diluent portion).

[0021] The application method is brushing, with the coating amount controlled at 55±10g / m². 2 Curing was performed using a handheld LED curing lamp, with three passes of light exposure, each with a curing energy of 300–400 mJ / cm². 2 .

[0022] A further optimization of the low-odor LED-UV wood primer for home decoration of the present invention is as follows:

[0023] The trifunctional low-viscosity polyester is CR90475 from Haohui Chemical; and / or

[0024] The tetrafunctional amine-modified polyester is DOUBLEMER 285 with double bond chemistry; and / or

[0025] The aforementioned propionyl oxynepentyl glycol diacrylate was provided by ZNS Resins (China) Co., Ltd.

[0026] A further optimization of the low-odor LED-UV wood primer for home decoration of the present invention is as follows:

[0027] The highly micronized washed kaolin is BASF Chemicals' ASP G90.

[0028] A further optimization of the low-odor LED-UV wood primer for home decoration of the present invention is as follows:

[0029] The ethyl 2,4,6-trimethylbenzoylphenylphosphonate and phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide were provided by Hubei Gurun Chemical.

[0030] A further optimization of the low-odor LED-UV wood primer for home decoration of the present invention is as follows:

[0031] The dispersant is BYK-2158 from BYK Chemicals; and / or

[0032] The defoamer is BYK-1799 from BYK Chemicals; and / or

[0033] The leveling agent is BYK Chemical's BYK-3535; and / or

[0034] The titanium dioxide mentioned is DuPont Chemicals' R-900; and / or

[0035] The talc powder mentioned is supplied by K brand powder, with a mesh size of 800-1000 mesh; and / or

[0036] The polymerization inhibitor is Shanghai Tongjin Chemical's 510; and / or

[0037] The active amine is Boxin Chemical's B-27; and / or

[0038] The acrylomorpholine mentioned above was provided by Shanghai Jurui Industrial Co., Ltd.; and / or

[0039] The anti-settling agent mentioned is BYK Chemical's RHEOBYK-410.

[0040] The second objective of this invention is:

[0041] A method for preparing the aforementioned low-odor LED-UV wood primer for home decoration is provided, comprising the following preparation steps:

[0042] Main component:

[0043] S1. First add trifunctional low-viscosity polyester, tetrafunctional amine modified polyester, part of propylene oxide neopentyl glycol diacrylate, dispersant, and defoamer, and disperse at high speed for 5 minutes;

[0044] S2. Next, add titanium dioxide, talc, highly micronized washed kaolin, ethyl 2,4,6-trimethylbenzoylphenylphosphonate, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide, polymerization inhibitor, and anti-settling agent, and disperse at high speed for 30 minutes;

[0045] S3. After the fineness meets the requirements, add the leveling agent, active amine, remaining propoxylated neopentyl glycol diacrylate, and acrylamide, and stir evenly at medium to high speed.

[0046] S4. After passing the inspection, filter and package.

[0047] Diluent section:

[0048] Direct packaging.

[0049] The key technical points and issues involved in low-odor UV-LED coatings used in the home decoration market are as follows:

[0050] 1. The optimal balance between coating reactivity, adhesion, flexibility, and odor under suitable application viscosity conditions:

[0051] The most common coating method in the home decoration market is brushing. However, high viscosity makes application impossible. To achieve the desired low viscosity, the most direct and simple method is to choose low-viscosity resins and reactive monomers, adding as many reactive monomers as possible to the formulation, and selecting pigments and fillers with low oil absorption. However, given current technology...

[0052] In the selection of resins and monomers, low-viscosity resins, due to their low molecular weight, generally rely on increasing their functionality in UV-LED systems to ensure the reactivity of the entire system. However, the negative impact is that the adhesion and flexibility are relatively low in most cases. On the other hand, most low-viscosity reactive monomers are monofunctional or bifunctional groups, which have relatively good flexibility and adhesion, but their reactivity is relatively average. In UV-LED systems, this disadvantage will be amplified. Although too many reactive monomers can directly reduce viscosity, too many monomers will first reduce reactivity and then significantly reduce adhesion.

[0053] In terms of pigment and filler selection, titanium dioxide is a fixed item, and the focus is mainly on filler selection. Generally, talc powder with high oil absorption has good anti-settling properties and good polishing properties, but adding too much will lead to excessive viscosity. Heavy calcium carbonate and barium sulfate with low oil absorption have poor anti-settling properties and poor polishing properties in this system.

[0054] In general, the primary key technical point is to balance the reactivity, adhesion, flexibility, and odor of resins and monomers by combining them under the premise of set construction viscosity, and to select appropriate pigments and fillers to balance viscosity, anti-settling, and abrasiveness.

[0055] 2. Excellent Storage Stability: Due to transportation, storage, and other factors, paints used in the home decoration market take a relatively long time to reach consumers. Therefore, the stability of these paints is significantly better than that of some factory-grade paints. Attention should be paid to the paint's anti-settling properties, viscosity increase, and gelation. As mentioned earlier, its low viscosity is inherently detrimental to anti-settling. Conventional solutions such as adding fumed silica or bentonite can address this, but the amount added often significantly increases the overall viscosity. Viscosity increase and gelation issues require a holistic consideration.

[0056] 3. Low odor, low irritation, safety, and environmental friendliness. The painting environment in the home decoration market is unlike that of a factory (with large-scale ventilation systems). There is a certain probability that air circulation may be inadequate. Additionally, construction workers and homeowners may lack sufficient knowledge about paints, leading to inadequate protective measures and potentially causing skin allergies, among other low-probability abnormal usage scenarios. The better the safety of the paint, the less impact and adverse consequences it will have. Some commonly used UV monomers, such as DPGDA and HDDA, have good diluents and fast reaction speeds, but they are highly irritating to the skin. Some low-irritant monomers have large molecular weights and poor dilution properties. Therefore, the odor and skin irritation of the monomers should be prioritized, and the formulation performance should be balanced within these considerations.

[0057] 4. Better surface finish: Brushing, the application method for paints in the home decoration market, is more prone to introducing bubbles and brush marks during the application process compared to spraying or mechanical roller coating. It also places higher demands on the design of the additive system than spraying and mechanical roller coating.

[0058] A similar patent is CN201611044437 (LED-UV Anti-graffiti and Anti-stain Coating and its Preparation and Application Methods). Its resin is an octafunctional, tetrafunctional, low-energy UV prepolymer combined with a difunctional monomer, diethylene glycol dimethacrylate. This combination emphasizes hardness and scratch resistance, making it unsuitable as a primer. Furthermore, this patent is for a clear varnish, without the addition of pigments or fillers, eliminating the need to consider anti-settling issues. The overall additive design system is also very simple.

[0059] The main design concept of this invention is as follows:

[0060] 1. Film-forming substances (selection of the combination of host resin and monomer)

[0061] The main resin is selected as a high-functionality, low-viscosity resin, which provides overall reactivity, but when used alone, the paint film is hard, brittle, and prone to cracking.

[0062] Because monomers are low molecular weight substances, they have a significant impact on the odor of the coating itself. This product is mainly developed for the retail home decoration market. High purity, low odor, and low skin irritation of monomers are the prerequisites for selection. On this basis, since the main resin has already provided sufficient reactivity, this invention selects monofunctional and bifunctional monomers with good flexibility and adhesion but slightly lower reactivity to be combined with the main resin to balance the performance of the entire system.

[0063] The specific selection criteria are as follows:

[0064] The following table shows the degree of skin irritation caused by the skin irritation index (PII) and its correlation:

[0065]

[0066] The viscosity of commonly used UV monomers PII, as found in relevant public literature and the market, is shown in the table below:

[0067]

[0068] In existing publicly available literature and the market, because the target market is furniture manufacturing, the requirements for UV monomers generally pay little attention to skin irritation index; the main focus is on viscosity and reactivity. Since most coating methods are mechanical (which can be heated to reduce application viscosity), viscosity reduction, reactivity, and resin compatibility are relatively flexible. However, the home improvement market, considering safety—specifically skin irritation index—has fewer monomer options. Therefore, the requirements for viscosity reduction, reactivity, and resin compatibility are relatively higher. Examples of conventional technical routes are as follows:

[0069] (1) Increasing the amount of the monomer can reduce the viscosity. On this premise, the reaction activity can be adjusted, but it will significantly sacrifice the adhesion and fail to meet the requirements. Therefore, in this invention, the weight ratio of the main resin to the monomer must be greater than 1:1.

[0070] (2) Using high-functional-group and high-reactivity monomers. As can be seen from the above table, high-functional-group and high-reactivity monomers generally have a relatively high viscosity and weak viscosity reduction ability. Regardless of whether they are combined with high-, medium-, or low-reactivity resins, they cannot meet the construction requirements under certain conditions.

[0071] (3) Medium- and low-reactivity monomers. If the resin has weak reaction activity, the overall reaction activity cannot meet the requirements. Resins with ultra-high functional groups generally have a relatively increased viscosity, but at the same time, it brings the risk of cracking and needs to be combined with resins with appropriate reaction activity.

[0072] Since this invention targets the home improvement market, under some limitations (such as the balance of viscosity and reaction activity), through a large number of experimental designs and screenings, a main resin with 3 to 4 high functional groups, high reactivity, and moderate viscosity is adopted, and it is combined with low-viscosity monomers with medium reaction activity, and the overall can achieve a very good balance and meet the requirements.

[0073] 2. In terms of overall storage stability

[0074] The main construction method of coatings in the home improvement market is brushing at room temperature. Different from mechanical coating, its viscosity is relatively low, which will bring some problems in storage stability such as precipitation. For this point, in the formulation design:

[0075] ① Adopting a two-component design, the viscosity of the main agent is increased to a certain extent, thus improving the anti-settling property, but this alone is not enough;

[0076] ② In the selection of fillers, highly micronized washed kaolin is innovatively introduced as a filler (with moderate oil absorption, good anti-settling property, and good sanding property). There is no relevant patent mention. Even in conventional UV coating patents, very few patents mention using conventional kaolin, but it is not the type of kaolin selected in this patent;

[0077] Conventional fillers are generally talc powder, heavy calcium, precipitated barium. Compared with ASP G90 in the preferred formulation of this technical solution:

[0078] System viscosity increase: heavy calcium ≈ precipitated barium < ASPG90 < talc powder;

[0079] Anti-settling property: ASPG90 ≈ talc powder > heavy calcium ≈ precipitated barium;

[0080] Sanding property: talc powder > ASPG90 > heavy calcium ≈ precipitated barium;

[0081] Hiding power: ASPG90 > talc powder ≈ heavy calcium ≈ precipitated barium;

[0082] Overall performance: Unlike talc, the introduction of ASP G90 does not cause a significant increase in viscosity, and it has good anti-settling and sanding properties, while also providing a certain degree of hiding power, reducing the amount of titanium dioxide required.

[0083] ③ Because of the introduction of highly micronized washed kaolin, the anti-settling system only needs to add modified urea, without the need to use the conventional anti-settling combination (gaseous silica + modified urea). This reduces the problem of increased viscosity and reduced leveling caused by the introduction of gaseous silica. Through a synergistic combination design that links one link to another (with the overall resin monomer system determined, from "two-component design" to "introduction of new fillers" to "anti-settling agent" combination), the problem of easy sedimentation under low viscosity storage is successfully solved.

[0084] 3. Photoinitiator:

[0085] Considering the safety of the home decoration market, a combination of ethyl 2,4,6-trimethylbenzoylphenylphosphonate and phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide is used.

[0086] 4. Other auxiliary agent systems:

[0087] Considering that brushing application (compared to mechanical roller coating and spraying, it is easy to introduce bubbles and the leveling is relatively worse), and that this invention is a colored paint system (compared to clear varnish, the introduction of fillers further reduces leveling and defoaming properties), this invention has obtained the actual optimal combination through a large number of experiments.

[0088] The low-odor LED-UV wood primer prepared by this invention applies the advantages of high-solids, solvent-free, and rapid curing of LED-UV wood primer to the home decoration market. Through scientific formulation design, the resulting product has a viscosity suitable for brush / roller application, excellent surface finish, and also features good storage stability (no hardening or gelling during long-term storage at low viscosity), excellent adhesion, good sandability, low skin irritation, low odor, high-solids, solvent-free, and safety and environmental friendliness. Currently, no publicly available patents in this area have been found. Detailed Implementation

[0089] To make the application, technical solution, and advantages of this invention clearer, the invention is described in detail with reference to specific embodiments. It should be understood that the embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this invention. Any simple improvements to the preparation method of this invention based on the inventive concept fall within the scope of protection of this invention.

[0090] In the following examples, the trifunctional low-viscosity polyester is CR90475 from Haohui Chemical, and the tetrafunctional amine-modified polyester is DOUBLEMER from Double Bond Chemical. 285. Neopentyl glycol diacrylate acrylate was supplied by Zhanxin Resin (China) Co., Ltd.; dispersant was BYK-2158 from BYK Chemical; defoamer was BYK-1799 from BYK Chemical; leveling agent was BYK-3535 from BYK Chemical; titanium dioxide was R-900 from DuPont Chemical; talc was supplied by K brand powder, with a mesh size of 800-1000 mesh; highly micronized washed kaolin was ASPG90 from BASF Chemical; ethyl 2,4,6-trimethylbenzoylphenylphosphonate and phenyl bis(2,4,6-trimethylbenzoyl)phosphonium oxide were supplied by Hubei Gurun Chemical; polymerization inhibitor was 510 from Shanghai Tongjin Chemical; active amine was B-27 from Boxin Chemical; acryloylmorpholine was supplied by Shanghai Jurui Industrial Co., Ltd.; and anti-settling agent was RHEOBYK-410 from BYK Chemical.

[0091] Examples 1#-4#

[0092] Main ingredient:

[0093] 25-35 parts of trifunctional low-viscosity polyester, 5-15 parts of tetrafunctional amine-modified polyester, 6-15 parts of neopentyl glycol diacrylate, 0.1-0.5 parts of dispersant, 0.1-0.3 parts of defoamer, 0.1-0.8 parts of leveling agent, 4-6 parts of titanium dioxide, 8-12 parts of talc, 5-15 parts of highly micronized washed kaolin, 3-6 parts of ethyl 2,4,6-trimethylbenzoylphenylphosphonate, 0.5-1.5 parts of phenylbis(2,4,6-trimethylbenzoyl)phosphonium oxide, 0.05 parts of polymerization inhibitor, 3-6 parts of active amine, 8-15 parts of acryloylmorpholine, and 0.2-1 part of anti-settling agent; total weight 100 parts.

[0094] Diluent:

[0095] 100 parts of acryloylmorpholine;

[0096] The weight ratio of the main agent to the diluent is 10:1;

[0097] The weight ratio of main resin to monomer is greater than 1:1;

[0098] The main resin is the total weight of trifunctional low-viscosity polyester and tetrafunctional amine-modified polyester; the monomer is the total weight of propylene oxide neopentyl glycol diacrylate and acryloylmorpholine (including the diluent portion).

[0099] The application method is brushing, with the coating amount controlled at 55±10g / m². 2 Curing was performed using a handheld LED curing lamp, with three passes of light exposure, each with a curing energy of 300–400 mJ / cm². 2 .

[0100] It includes the following preparation steps:

[0101] Main component:

[0102] S1. First add trifunctional low-viscosity polyester, tetrafunctional amine modified polyester, part of propylene oxide neopentyl glycol diacrylate, dispersant, and defoamer, and disperse at high speed for 5 minutes;

[0103] S2. Next, add titanium dioxide, talc, highly micronized washed kaolin, ethyl 2,4,6-trimethylbenzoylphenylphosphonate, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide, polymerization inhibitor, and anti-settling agent, and disperse at high speed for 30 minutes;

[0104] S3. After the fineness meets the requirements, add the leveling agent, active amine, remaining propoxylated neopentyl glycol diacrylate, and acrylamide, and stir evenly at medium to high speed.

[0105] S4. After passing the inspection, filter and package.

[0106] Diluent section:

[0107] Direct packaging.

[0108] Table 1. Raw material composition (parts by weight) for each embodiment and comparative example.

[0109]

[0110] Table 2 Performance test results for each embodiment and comparative example

[0111]

[0112]

[0113]

[0114] As can be seen from Table 1-2, the main difference between Examples 1#-4# lies in the different pigment and filler contents, which leads to differences in cost and application scenarios. From the performance parameters of the examples, all meet the expected requirements – good storage stability, no cracking of the cured paint film after thermal cycling, and high safety. Adhesion and sandability meet practical needs.

[0115] The main difference between Comparative Example 1, Comparative Example 2 and the Example lies in the different components, as detailed in Table 1.

[0116] Comparative Example 1:

[0117] The product prepared in Comparative Example 1 emphasizes hardness and scratch resistance, while conventional primers focus on adhesion and sandability, indicating a different performance focus. The results show that using a resin with ultra-high functional groups combined with difunctional monomers increases viscosity, decreases sandability, and significantly worsens adhesion, posing a risk of cracking.

[0118] Comparative Example 2:

[0119] Conventional kaolin is primarily used in water-based coatings, especially water-based architectural coatings, and rarely in oil-based coatings. Currently, publicly available UV-LED technologies do not utilize highly micronized washed kaolin powder; they only use conventional kaolin. However, conventional kaolin is generally high in viscosity and does not have high requirements for anti-settling properties. If conventional kaolin is used in an equal amount to replace highly micronized washed kaolin in this invention, it can be seen that the anti-settling and abrasive properties are significantly reduced, failing to meet the intended performance requirements.

[0120] The role of ASP G90-highly micronized washed kaolin in this technical solution is mainly reflected in:

[0121] 1. Strong hiding power; compared to fillers such as calcium powder, it has better hiding power.

[0122] 2. Excellent suspension performance, requiring no additional fillers or suspension stabilizers;

[0123] 3. High whiteness reduces the amount of titanium dioxide needed, thus lowering costs;

[0124] 4. Low residue on sieve, high purity, and stable formula;

[0125] 5. Minimal impact on gloss, suitable for high-gloss coatings;

[0126] 6. Suspension stability: ASP G90-highly micronized washed kaolin has been modified in terms of anti-settling and dispersibility, and its grinding properties have been improved compared to ordinary kaolin.

[0127] Although the materials selected in this invention still belong to the coating system, through the innovative introduction of some materials and a scientifically sound formula design, a low-odor LED-UV wood primer for home decoration is produced through synergistic effects. The resulting product has a viscosity suitable for brush application and produces an excellent surface finish. This low-odor LED-UV wood primer for home decoration exhibits good storage stability (no hardening or gelling during long-term storage at low viscosity), excellent adhesion, good sanding properties, low skin irritation, low odor, high solids content, and is solvent-free, making it safe and environmentally friendly. Currently, no publicly available patents in this area have been found.

[0128] In summary, the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any changes, modifications, and evolutions made by those skilled in the art without departing from the scope of the present invention based on the disclosed technical content shall be considered equivalent embodiments of the present invention. Furthermore, any changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention shall still fall within the protection scope of the present invention.

[0129] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] Experimental methods not specified in this invention are generally performed under conventional conditions or as recommended by the manufacturer.

[0131] Unless otherwise stated, the various optimized technical solutions in this invention can be combined with each other.

[0132] Unless otherwise stated, percentages and parts are weight percentages and weight parts.

[0133] Experimental methods not specified in the instructions and examples are generally performed under standard conditions or as recommended by the manufacturer.

[0134] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as are familiar to those skilled in the art. Furthermore, any methods and materials similar to or equivalent to those described herein may be used in the methods of this invention.

Claims

1. A low-odor LED-UV wood primer for home decoration, characterized in that: It comprises the following components in parts by weight: Main ingredient: The following ingredients are included: CR90475 from Haohui Chemical (25-35 parts), DOUBLEMER 285 from Shuangjie Chemical (5-15 parts), neopentyl glycol diacrylate (6-15 parts), dispersant (0.1-0.5 parts), defoamer (0.1-0.3 parts), leveling agent (0.1-0.8 parts), titanium dioxide (4-6 parts), talc (8-12 parts), highly micronized washed kaolin (5-15 parts), ethyl 2,4,6-trimethylbenzoylphenylphosphonate (3-6 parts), phenylbis(2,4,6-trimethylbenzoyl)phosphonium oxide (0.5-1.5 parts), polymerization inhibitor (0.05 parts), active amine (3-6 parts), acryloylmorpholine (8-15 parts), and anti-settling agent (0.2-1 part); total weight is 100 parts. The highly micronized washed kaolin is BASF Chemicals' ASP G90. Diluent: 100 parts of acryloylmorpholine; The weight ratio of the main agent to the diluent is 10:1; The weight ratio of main resin to monomer is greater than 1:1; wherein the main resin is the total weight of trifunctional low-viscosity polyester and tetrafunctional amine modified polyester; and the monomer is the total weight of propylene oxide neopentyl glycol diacrylate and acryloylmorpholine. The application method is brushing, with the coating amount controlled at 55±10 g / m². 2 Curing is performed using a handheld LED curing lamp, with three passes of light exposure, each with an energy level of 300-400 mJ / cm².

2. The low-odor LED-UV wood primer for home decoration according to claim 1, characterized in that: The aforementioned propionyl oxynepentyl glycol diacrylate was provided by ZNS Resins (China) Co., Ltd.

3. The low-odor LED-UV wood primer for home decoration according to claim 1, characterized in that: The ethyl 2,4,6-trimethylbenzoylphenylphosphonate and phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide were provided by Hubei Gurun Chemical.

4. The low-odor LED-UV wood primer for home decoration according to claim 1, characterized in that: The dispersant is BYK-2158 from BYK Chemicals; and / or The defoamer is BYK-1799 from BYK Chemicals; and / or The leveling agent is BYK Chemical's BYK-3535; and / or The titanium dioxide mentioned is DuPont Chemicals' R-900; and / or The talc powder mentioned is supplied by K brand powder, with a mesh size of 800-1000 mesh; and / or The polymerization inhibitor is Shanghai Tongjin Chemical's 510; and / or The active amine is Boxin Chemical's B-27; and / or The acrylomorpholine mentioned above was provided by Shanghai Jurui Industrial Co., Ltd.; and / or The anti-settling agent mentioned is BYK Chemical's RHEOBYK-410.

5. A method for preparing the low-odor LED-UV wood primer for home decoration as described in claim 1, characterized in that: It includes the following preparation steps: Main component: S1. First, add trifunctional low-viscosity polyester, tetrafunctional amine modified polyester, part of propylene oxide neopentyl glycol diacrylate, dispersant, and defoamer, and disperse at high speed for 5 minutes; S2. Next, add titanium dioxide, talc, highly micronized washed kaolin, ethyl 2,4,6-trimethylbenzoylphenylphosphonate, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide, polymerization inhibitor, and anti-settling agent, and disperse at high speed for 30 minutes; S3. After the fineness meets the requirements, add the leveling agent, active amine, remaining propoxylated neopentyl glycol diacrylate, and acryloylmorpholine, and stir evenly at medium to high speed. S4. After passing the inspection, filter and package. Diluent section: Direct packaging.

Images