Water-dispersible reactive light stabilizer and water-based polymer material

Abstract

Provided in the present application are a water-dispersible reactive light stabilizer and a water-based polymer material. The water-dispersible reactive light stabilizer comprises: a first component: a reactive hindered amine light stabilizer and / or a reactive ultraviolet absorbent; a second component: emulsifiers, which are at least two nonionic surfactants, or comprise both at least one anionic surfactant and at least one nonionic surfactant, the anionic surfactant being a sulfonate anionic surfactant or a phosphate anionic surfactant; and an optional third component: a co-emulsifier, wherein when the first component contains the reactive ultraviolet absorber, the water-dispersible reactive light stabilizer necessarily contains the third component. The water-dispersible reactive light stabilizer provided in the present application can be dispersed in water in a stable form and can therefore be stably added to a water-based polymer material without adding a cosolvent; thus, the environmental protection property of the water-based polymer material is fully ensured, and there is no harm caused by VOCs.

Description

Water-dispersible reactive light stabilizers and water-based polymer materials

[0001] This application is based on the Chinese application with CN application number 202310752095.1 and application date June 25, 2023, and claims its priority. The disclosed content of the CN application is again introduced as a whole into this application. Technical Field

[0002] The present application relates to the field of polymer material additives, and more specifically, to a water-dispersible reactive light stabilizer and a water-based polymer material. Background Art

[0003] In recent years, polymer technology has advanced rapidly, resulting in a wide range of materials with unique properties, providing greater development potential and expanding possibilities for the advancement of modern society. Polymer materials are ubiquitous and widely used, but most are directly exposed to the atmosphere. Light, air, carbon dioxide, water, and organisms can all cause polymer materials to age, further affecting their performance and service life, significantly limiting their application.

[0004] The aging of polymer materials is primarily due to the degradation of polymer chains. Materials typically used at room temperature primarily age through photooxidative degradation. Adding light stabilizers, such as UV absorbers and hindered amine light stabilizers (HALS), is the primary method for preventing photooxidative degradation. UV absorbers absorb or block the harmful ultraviolet (UV) wavelengths of 280-450nm from sunlight and fluorescent sources without changing themselves. HALS stabilize polymers by capturing free radicals generated during polymer photooxidation and degradation, decomposing alkyl hydroperoxides, and quenching excited-state energy. HALS effectively inhibit the photodegradation of polymers and are currently the most widely used, highly effective light stabilizer in the anti-aging field for polymers. Numerous studies have demonstrated a synergistic effect between UV absorbers (UVAs) and hindered amine light stabilizers (HALSs), significantly enhancing the anti-aging effects of polymers. Therefore, the combination of UVA and HALS has become widely used in the polymer field.

[0005] However, with the continuous development of society, countries are increasingly demanding higher regulatory and environmental requirements. Materials containing solvents, especially solvent-based coatings, contain large amounts of volatile organic compounds (VOCs) that are harmful to the human body. Consequently, environmentally friendly water-based coatings, powder coatings, UV curing coatings, water-based adhesives, and water-based inks are rapidly developing, and their proportion in industry products is increasing year by year. The requirements for material anti-aging are also increasing. Therefore, in order to adapt to new requirements, reduce VOC emissions, and accommodate multiple demands and processing techniques, the need for water-based UVA and HALS composite light stabilizers in environmentally friendly water-based coating systems is imperative. However, water-based UVA and HALS composite light stabilizers often encounter the following problems:

[0006] First, the water dispersibility problem: Traditional UVA and HALS are added to polymer materials as additives. They are generally small molecules or high molecular weight compounds, are hydrophobic, and are unevenly dispersed in water. They are easily soluble in organic solvents and generally need to be dissolved with the help of co-solvents before being added to the water-based coating system. This will also bring VOC hazards.

[0007] Second, long-term effectiveness: Under normal operating conditions, a combination of UVA and HALS provides excellent long-term protection for polymer materials. However, under conditions of high temperature or corrosive environmental factors, traditional UVA and HALS can lose their properties through physical means (volatilization, migration, and dissolution), gradually reducing the concentration of the light stabilizer in the material. Ultimately, they lose their protective properties, leading to aging and degradation.

[0008] If UVA and HALS are designed to be reactive, and the light stabilizer is attached to the polymer chain through chemical cross-linking, the aforementioned long-term effectiveness issues of the materials can be resolved, and long-term protection can be achieved. However, although some reactive UVA and reactive HALS compounded products exist, there are few reactive light stabilizers for water-based systems, which are in line with the development trend of water-based polymer systems.

[0009] In view of this, this application is hereby filed.

[0010] Summary of the Invention

[0011] The main purpose of the present application is to provide a water-dispersible reactive light stabilizer and a water-based polymer material to solve the problem that the composite light stabilizer in the prior art is not suitable for use with water-based polymer materials.

[0012] In order to achieve the above object, according to one aspect of the present application, a water-dispersible reactive light stabilizer is provided, which comprises: a first component: a reactive hindered amine light stabilizer and / or a reactive ultraviolet absorber; wherein the reactive hindered amine light stabilizer is R1' is a C1 to C10 alkyl group; the reactive ultraviolet absorber is R1, R2, R3 and R4 are independently selected from C1~C4 alkyl groups, and R5 is selected from C8~C20 alkyl groups or mixed alkyl groups; the second component: emulsifier; the emulsifier is at least two non-ionic surfactants, or includes at least one anionic surfactant and at least one non-ionic surfactant; the anionic surfactant is a sulfonate anionic surfactant or a phosphate anionic surfactant; the optional third component: co-emulsifier; and when the first component contains a reactive ultraviolet absorber, the water-dispersible reactive light stabilizer must contain the third component.

[0013] Furthermore, each nonionic surfactant is independently an octylphenol polyoxyethylene ether (OP) series, a nonylphenol polyoxyethylene ether (NP) series, a castor oil polyoxyethylene ether (EL) series, a hydrogenated castor oil polyoxyethylene ether (HEL) series, a fatty alcohol polyoxyethylene ether (MOA) series, an isomeric alcohol polyoxyethylene ether (E13) series, a fatty acid polyoxyethylene ester (A) series surfactant, a polyethylene glycol (PEG) series or a polypropylene glycol (PPG) series surfactant; preferably, among the at least two nonionic surfactants, the castor oil polyoxyethylene ether (EL) series does not exist at the same time as the nonylphenol polyoxyethylene ether (NP) series, the octylphenol polyoxyethylene ether (OP) series or the polyethylene glycol (PEG) series, and the fatty acid polyoxyethylene ester (A) series does not exist at the same time as the fatty alcohol polyoxyethylene ether (MOA) series; preferably, among the at least one anionic surfactant and the at least one nonionic surfactant, the anionic surfactant is not a sulfate-type anionic surfactant.

[0014] Furthermore, R1' is a C6-C10 alkyl group; R1, R2, R3 and R4 are independently selected from methyl or tert-butyl groups, and R5 is selected from a C12-C16 alkyl group or a mixed alkyl group; preferably, the reactive UV absorber is one or more, and when the reactive UV absorber is multiple, R5 in different reactive UV absorbers is different; preferably, the reactive hindered amine light stabilizer is Reactive UV absorbers are

[0015] Furthermore, in the water-dispersible reactive light stabilizer, the weight ratio of the reactive hindered amine light stabilizer to the reactive ultraviolet absorber is 0-95:0-95, for example, 5-10:90-95, 15-20:80:85, 25-30:70-75, 35-40:60-65, 45-50:50-55, 50-55:45-50, 60-65:35-40, 70-75:25-30, 80-85:15-20, 90-95:5-10; preferably 5-40:10-70, more preferably 20-30:45-55.

[0016] Furthermore, the sulfonate type anionic surfactant is alkylbenzene sulfonate, α-olefin sulfonate, alkyl sulfonate, α-sulfomonocarboxylic acid and its derivatives, fatty acid sulfoalkyl ester or fatty acid sulfoalkylamide; the phosphate anionic surfactant is alkyl phosphate monoester salt, alkyl phosphate diester salt (AP), alcohol ether, ester ether phosphate monoester salt or ester ether phosphate diester salt; the octylphenol polyoxyethylene ether (OP) series surfactant is selected from at least one of OP-4, OP-5, OP-6, OP-7, and OP-10; the nonylphenol polyoxyethylene ether (NP) series surfactant is selected from at least one of NP-4, NP-5, NP-6, NP-7, and NP-10; the castor oil polyoxyethylene ether (EL) series surfactant is selected from at least one of EL-10, EL-12, EL-20, EL-30, EL-40, and EL-60; the hydrogenated castor oil polyoxyethylene ether (HEL) series surfactant is selected from at least one of At least one of HEL-20 and HEL-40; fatty alcohol polyoxyethylene ether (MOA) series surfactants are selected from at least one of MOA-3, MOA-4, MOA-5, MOA-7, and MOA-9; isomeric alcohol polyoxyethylene ether (E13) series surfactants are selected from at least one of E1302, E1304, E1306, E1308, E1310, and E1312; the ester nonionic surfactant is a fatty acid polyoxyethylene ester (A) series surfactant selected from at least one of A105, A110, and A115; polyethylene glycol (PEG) series surfactants are selected from at least one of PEG200, PEG300, PEG400, PEG600, PEG800, and PEG1000; and polypropylene glycol (PPG) series surfactants are selected from at least one of PPG200, PPG400, PPG600, and PPG1000.

[0017] Furthermore, when the first component contains a reactive UV absorber, the emulsifier is a combination of a fatty alcohol polyoxyethylene ether (MOA) series surfactant and an isomeric alcohol polyoxyethylene ether (E13) series surfactant; preferably, the weight ratio of the fatty alcohol polyoxyethylene ether (MOA) series surfactant to the isomeric alcohol polyoxyethylene ether (E13) series surfactant is 5-7.5:5-10; more preferably, the emulsifier is a combination of a MOA-3 surfactant and an E-1310 surfactant. When the first component contains only a reactive hindered amine light stabilizer, the emulsifier is a combination of a fatty alcohol polyoxyethylene ether (MOA) series surfactant and a castor oil polyoxyethylene ether (EL) series surfactant; preferably, the weight ratio of the fatty alcohol polyoxyethylene ether (MOA) series surfactant to the castor oil polyoxyethylene ether (EL) series surfactant is 2-4:2-5.2; more preferably, the emulsifier is a combination of a MOA-3 surfactant and an EL-10 surfactant.

[0018] Furthermore, the amount of the emulsifier is 10 to 30% by weight of the first component, more preferably 13 to 23%;

[0019] Furthermore, the amount of the co-emulsifier is 3-10% by weight of the first component, more preferably 3.3-6.7% by weight; the co-emulsifier is a C8 to C18 fatty alcohol, preferably lauryl alcohol.

[0020] According to another aspect of the present application, a water-based polymer material is provided, comprising a light stabilizer, which is the above-mentioned water-dispersible reactive light stabilizer.

[0021] Furthermore, calculated as solid components, the amount of the effective components of the light stabilizer added to the water-based polymer material is 0.1 to 10%; preferably, the water-based polymer material is a water-based acrylic resin material, a water-based polyurethane material, a water-based amino resin material, a water-based epoxy resin material, a water-based alkyd resin material, a water-based polyester resin material or a water-based phenolic resin material.

[0022] According to another aspect of the present application, a water-based polymer material product is also provided, comprising the water-dispersible reactive light stabilizer according to any one of claims 1 to 8, wherein the water-based polymer material product is a water-based paint, a water-based adhesive, a water-based ink, a water-based sealant, a water-based leather or a water-based sole slurry.

[0023] The present application provides a water-dispersible reactive light stabilizer, which includes a first component reactive hindered amine light stabilizer and / or reactive UV absorbers The water-dispersible reactive light stabilizer provided in the present application can be dispersed in water in a stable form, and thus can be stably added to water-based polymer materials without the need for adding co-solvents, fully ensuring the environmental friendliness of the water-based polymer materials and eliminating VOC hazards.

[0024] Moreover, this application uses a reactive hindered amine light stabilizer and / or reactive UV absorbers As the main components of light stabilizers, both can also chemically link with waterborne polymer materials after application, resulting in enhanced long-term effectiveness and resistance to volatilization, migration, and dissolution, providing long-term, effective protection for the polymer. In particular, when the aforementioned reactive hindered amine light stabilizer and reactive UV absorber are included together, they exhibit a favorable compounding effect, achieving even greater results in improving the anti-aging properties of waterborne polymer materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0026] FIG1 shows a QUV aging test color difference curve of the water-based dispersible reactive composite light stabilizer provided in Example 1 and Example 4 after application in a one-component acrylic water-based industrial paint;

[0027] FIG2 shows the color difference change curve of the water-based dispersible reactive composite light stabilizer provided in Example 1 and Example 4 after application in a one-component acrylic water-based industrial paint in a xenon lamp aging test;

[0028] FIG3 shows the color difference change curve of the water-based dispersible reactive composite light stabilizer provided in Example 1 and Example 4 after application in a two-component water-based acrylic polyurethane topcoat under QUV aging test;

[0029] FIG4 shows the color difference change curve of the xenon lamp aging test after application of the water-based dispersible reactive composite light stabilizer provided in Example 1 and Example 4 to a two-component water-based acrylic polyurethane topcoat;

[0030] FIG5 shows the color difference change curves of the water-based dispersible reactive composite light stabilizers provided in Example 1 and Example 4 after application in plastic coatings in a QUV aging test;

[0031] FIG6 shows the color difference change curves of the xenon lamp aging test after the water-based dispersible reactive composite light stabilizers provided in Example 1 and Example 4 are applied to plastic coatings. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] As described in the background section of this application, few reactive light stabilizers are used in water-based systems. This is partly due to the poor water dispersibility of reactive UVA and reactive HALS after emulsification, preventing them from forming stable, uniform aqueous dispersions. Furthermore, the adaptability and long-term effectiveness of these materials, which have arisen with the demands of social development and advancements in materials technology, have yet to attract sufficient attention to water-based systems.

[0034] In order to solve the above problems, the present application provides a water-dispersible reactive light stabilizer, which includes: a first component: a reactive hindered amine light stabilizer and / or a reactive ultraviolet absorber; wherein the reactive hindered amine light stabilizer is R1' is a C1 to C10 alkyl group; the reactive ultraviolet absorber is R1, R2, R3 and R4 are independently selected from C1~C4 alkyl groups, and R5 is selected from C8~C20 alkyl groups or mixed alkyl groups; the second component: emulsifier; the emulsifier is at least two non-ionic surfactants, or includes at least one anionic surfactant and at least one non-ionic surfactant; the anionic surfactant is a sulfonate anionic surfactant or a phosphate anionic surfactant; the optional third component: co-emulsifier; and when the first component contains a reactive ultraviolet absorber, the water-dispersible reactive light stabilizer must contain the third component.

[0035] They are liquid at room temperature, and both are more easily stably dispersed in water under the action of emulsifiers and optional co-emulsifiers. Therefore, the water-dispersible reactive light stabilizer provided by this application has good compatibility with water-based polymer materials and can be stably dispersed in water-based polymer materials without the addition of cosolvents, fully ensuring the environmental friendliness of water-based polymer materials and eliminating VOC hazards, thereby expanding the application range of reactive composite light stabilizers.

[0036] and, The structure retains the low-alkalinity N-OR type main body, and introduces a hydroxyl group that can participate in the reaction at its other end. The hydroxyl group can chemically cross-link with the functional groups in the polymer material, such as the isocyanate group of the polyurethane material, the free amine or ether bond on the amino resin, and the epoxy group in the epoxy material. Finally, the small molecule hindered amine light stabilizer is bonded to the matrix polymer chain. Especially when the reactive hindered amine light stabilizer and reactive UV absorbers When used as the main components of light stabilizers, the two not only have a good compounding effect, but also exist in the form of chemical linkage with water-based polymer materials after being applied to them, which has better long-term effectiveness, is not easy to volatilize, migrate, or dissolve, etc., and can provide long-term and effective protection for polymer materials.

[0037] Emulsifiers contain both lipophilic and hydrophilic groups. They adsorb at the interface between the two phases, reducing surface tension and forming an interfacial film. This interfacial film protects dispersed phase droplets, preventing them from coalescing during Brownian motion. However, coalescence (destabilization) requires the rupture of the interfacial film. Therefore, the mechanical strength of the interfacial film is a key factor in determining emulsion stability. The emulsifier's hydrophilic / lipophilic balance (HLB), molecular structure, and content all influence emulsification effectiveness. The HLB value relates to both the hydrophilic and lipophilic properties of the emulsifier, as well as its surface tension, interfacial adsorption, emulsification properties, and basic emulsion properties such as stability, dispersibility, solubility, and detergency. It also influences the emulsifier's application performance. Lipophilic emulsifiers have lower HLBs, while hydrophilic emulsifiers have higher HLBs. The hydrophilic-lipophilic transition point (HLB) is 10. An HLB value less than 10 indicates lipophilicity, while an HLB value greater than 10 indicates hydrophilicity. The charge of the emulsifier and the polarity of the emulsified oil phase affect the spatial, electrical or mechanical barriers between the dispersed phase droplets, further affecting the droplet size and the stability of the aqueous dispersion.

[0038] In order to make the water-dispersible reactive light stabilizer form a more stable aqueous dispersion system and make it more suitable for water-based polymer materials, in a preferred embodiment, each nonionic surfactant is independently selected from the group consisting of octylphenol polyoxyethylene ether (OP) series, nonylphenol polyoxyethylene ether (NP) series, castor oil polyoxyethylene ether (EL) series, hydrogenated castor oil polyoxyethylene ether (HEL) series, fatty alcohol polyoxyethylene ether (MOA) series, isomeric alcohol polyoxyethylene ether (E13) series, fatty acid polyoxyethylene ester (A) series surfactant, polyethylene glycol (PEG) series, or polypropylene glycol (PPG) series surfactant. The use of the above nonionic surfactants further improves the stability of the aqueous dispersion system.

[0039] In particular, in order to better play the role of emulsifier and improve the stability of the water dispersion system, preferably, among at least two non-ionic surfactants, the castor oil polyoxyethylene ether (EL) series does not exist at the same time as the nonylphenol polyoxyethylene ether (NP) series, the octylphenol polyoxyethylene ether (OP) series or the polyethylene glycol (PEG) series, and the fatty acid polyoxyethylene ester (A) series does not exist at the same time as the fatty alcohol polyoxyethylene ether (MOA) series; preferably, among at least one anionic surfactant and at least one nonionic surfactant, the anionic surfactant is not a sulfate-type anionic surfactant.

[0040] To better compound the above-mentioned reactive hindered amine light stabilizer and reactive UV absorber, achieve better dispersion in the water-based polymer material, and provide superior long-term protection, in a preferred embodiment, R1' is a C6-C10 alkyl group; R1, R2, R3, and R4 are independently selected from methyl or tert-butyl groups, and R5 is selected from a C12-C16 alkyl group or a mixed alkyl group. Preferably, there are one or more reactive UV absorbers, and when there are multiple reactive UV absorbers, R5 in different reactive UV absorbers is different (in this case, it is equivalent to R5 mixed alkyl groups). By selecting the above substituents, the corresponding reactive hindered amine light stabilizer and reactive UV absorber are more easily stably dispersed in water under the action of an emulsifier and an optional co-emulsifier.

[0041] Most preferably, the reactive hindered amine light stabilizer is The reactive ultraviolet absorber is (UV-400).

[0042] In a preferred embodiment, the weight ratio of the reactive hindered amine light stabilizer to the reactive UV absorber in the water-dispersible reactive light stabilizer is 0-95:0-95, preferably 5-40:10-70, and more preferably 20-30:45-55. Controlling the weight ratio within this range not only improves the compounding effect but also enables a more significant synergistic effect when applied to waterborne polymer materials.

[0043] The use of sulfonate anionic surfactants or phosphate anionic surfactants has a key impact on stabilizing the aqueous dispersion system. In order to better play this role, illustratively, the sulfonate anionic surfactant can be one or more of alkylbenzene sulfonate (LAS or ABS), α-olefin sulfonate (AOS), alkyl sulfonate (AS or SAS), α-sulfomonocarboxylic acid and its derivatives (MES), fatty acid sulfoalkyl ester or fatty acid sulfoalkylamide; the phosphate anionic surfactant can be one or more of alkyl phosphate monoester salt, alkyl phosphate diester salt (AP), alcohol ether, ester ether phosphate monoester salt, ester ether phosphate diester salt.

[0044] For example, the octylphenol polyoxyethylene ether (OP) series surfactant is selected from at least one of OP-4, OP-5, OP-6, OP-7, and OP-10; the nonylphenol polyoxyethylene ether (NP) series surfactant is selected from at least one of NP-4, NP-5, NP-6, NP-7, and NP-10; the castor oil polyoxyethylene ether (EL) series surfactant is selected from at least one of EL-10, EL-12, EL-20, EL-30, EL-40, and EL-60; the hydrogenated castor oil polyoxyethylene ether (HEL) series surfactant is selected from at least one of HEL-20 and HEL-40; the fatty alcohol polyoxyethylene ether (MOA) series surfactant is selected from MOA-3, MOA-4, MOA- 5. At least one of MOA-7 and MOA-9; the isomeric alcohol polyoxyethylene ether (E13) series surfactant is selected from at least one of E1302, E1304, E1306, E1308, E1310, and E1312; the ester nonionic surfactant is a fatty acid polyoxyethylene ester (A) series surfactant selected from at least one of A105, A110, and A115; the polyethylene glycol (PEG) series surfactant is selected from at least one of PEG200, PEG300, PEG400, PEG600, PEG800, and PEG1000; the polypropylene glycol (PPG) series surfactant is selected from at least one of PPG200, PPG400, PPG600, and PPG1000.

[0045] More preferably, when the first component contains a reactive ultraviolet absorber, the emulsifier is a compound of a fatty alcohol polyoxyethylene ether series surfactant and an isomeric alcohol polyoxyethylene ether series surfactant; preferably, the weight ratio of the fatty alcohol polyoxyethylene ether series surfactant and the isomeric alcohol polyoxyethylene ether series surfactant is 5-7.5:5-10; more preferably, the emulsifier is a compound of a MOA-3 surfactant and an E-1310 surfactant; when the first component contains only a reactive hindered amine light stabilizer, the emulsifier is a compound of a fatty alcohol polyoxyethylene ether series surfactant and a castor oil polyoxyethylene ether series surfactant; preferably, the weight ratio of the fatty alcohol polyoxyethylene ether series surfactant and the castor oil polyoxyethylene ether series surfactant is 2-4:2-5.2; more preferably, the emulsifier is a compound of a MOA-3 surfactant and an EL-10 surfactant. In the above-mentioned water-dispersible reactive light stabilizer of the present application, depending on whether the first component contains a reactive ultraviolet absorber, the above-mentioned specific composite surfactant is preferably used, which is more conducive to forming a tightly arranged interfacial film at the interface between the two phases, thereby helping to further maintain the stability of the application system.

[0046] In a preferred embodiment, the amount of emulsifier used is 10-30% by weight of the first component, for example, 12%, 15%, 18%, 20%, 22%, 25%, 28%, and values ​​therebetween, and more preferably 13-23%. These emulsifier amounts are more conducive to improving the dispersibility and stability of the composite light stabilizer in the water-based polymer material.

[0047] The function of the above-mentioned co-emulsifier is to adsorb at the oil-water interface, further reducing interfacial tension, enhancing the fluidity of the interfacial film, and reducing the bending energy required for emulsion formation, allowing the emulsion to form spontaneously. The co-emulsifier forms an interfacial barrier on the droplet surface, slowing the migration of the composite light stabilizer from small to large droplets. Generally, the co-emulsifier is required to be soluble in the composite light stabilizer but insoluble in water. The greater the water solubility of the co-emulsifier, the worse the delay effect. There are two mechanisms by which co-emulsifiers achieve emulsification: one is through dipole or hydrogen bonding interactions with the composite light stabilizer, dispersing the composite light stabilizer in water and achieving mutual solubility; the other is that amphiphilic molecules form micelles in water that have the ability to solubilize the composite light stabilizer. This solubilization of the micelles leads to mutual solubility. To maximize these effects, the co-emulsifier is preferably a C8 to C18 fatty alcohol, more preferably lauryl alcohol. When the water-dispersible reactive light stabilizer contains the reactive ultraviolet absorber UV-400, the water-dispersible reactive light stabilizer also contains a co-emulsifier; more preferably, the amount of the co-emulsifier is 3 to 10% by weight of the first component, for example, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10% and any value therebetween, more preferably 3.3 to 6.7%.

[0048] According to another aspect of the present application, a water-based polymer material includes a light stabilizer, wherein the light stabilizer is the water-dispersible reactive light stabilizer described above. They are liquid at room temperature and are easily stably dispersed in water under the action of emulsifiers and optional co-emulsifiers. Therefore, the water-dispersible reactive light stabilizer provided by this application has good compatibility with water-based polymer materials and can be stably added to water-based polymer materials without the need for cosolvents, fully ensuring the environmental friendliness of water-based polymer materials and eliminating VOC hazards.

[0049] and, The structure retains the low-alkalinity N-OR type main body, and introduces a hydroxyl group that can participate in the reaction at its other end. The hydroxyl group can undergo chemical cross-linking with functional groups in polymer materials, such as the isocyanate group of polyurethane materials, the free amine or ether bond on amino resins, and the epoxy group in epoxy materials, and ultimately the small molecule hindered amine light stabilizer is bonded to the matrix polymer chain. In particular, when the above-mentioned reactive hindered amine light stabilizer and reactive ultraviolet absorber are used as the main components of the light stabilizer, in addition to having a good compounding effect, the two exist in the form of chemical linkage with the water-based polymer material after being applied to the water-based polymer material, have better long-term effectiveness, are not easy to volatilize, migrate, or dissolve, etc., and can provide long-term and effective protection for the polymer material, so that the modified water-based polymer material has better performance in long-term anti-aging effect.

[0050] To further enhance the anti-aging properties of the waterborne polymer material, in a preferred embodiment, the active component of the light stabilizer (i.e., the first component consisting of a reactive hindered amine light stabilizer and / or a reactive UV absorber) is added to the waterborne polymer material in an amount of 0.1-10% based on solid components. This percentage, calculated as a solid component, represents the ratio of the active component of the light stabilizer to the solid components in the waterborne polymer material.

[0051] The above-mentioned water-based polymer material can be a commonly used type in the polymer field. The above-mentioned specific polymer material types include but are not limited to water-based acrylic resin materials, water-based polyurethane materials, water-based amino resin materials, water-based epoxy resin materials, water-based alkyd resin materials, water-based polyester resin materials or water-based phenolic resin materials.

[0052] According to another aspect of the present application, a water-based polymer material product comprises a light stabilizer, which is the above-mentioned water-dispersible reactive light stabilizer, such as but not limited to water-based coatings, water-based adhesives, water-based inks, water-based sealants, water-based leather or water-based sole slurry.

[0053] The water-dispersible reactive light stabilizer of this application can be directly added to the water-based polymer material or diluted with water before use. Under good stirring conditions, the water-dispersible light stabilizer can be directly added to the water-based polymer material for use; the water-dispersible light stabilizer is generally used after dilution. Depending on the characteristics of the water-based polymer material, the water-dispersible light stabilizer and water are diluted in a ratio of 1:1-1:100, preferably 1:1-1:50, and more preferably 1:3-1:10, to effectively avoid foaming problems.

[0054] The present application is further described in detail below with reference to specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed in this application.

[0055] Preparation of water-based dispersible reactive composite light stabilizer

[0056] The following LRHALS stands for reactive hindered amine light stabilizer

[0057] The water-dispersible reactive light stabilizers in the examples of the present application are prepared by mixing and stirring. During mixing, the mixture is heated to 50° C. and stirred until uniform.

[0058] Example 1

[0059] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 5 g of emulsifier MOA-3, 5 g of emulsifier E-1310, and 5 g of co-emulsifier dodecanol.

[0060] Example 2

[0061] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 7.5 g of emulsifier MOA-3, 10 g of emulsifier E-1310, and 5 g of co-emulsifier dodecanol.

[0062] Example 3

[0063] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 7.5 g of emulsifier MOA-3, 7.5 g of emulsifier E-1310, and 2.5 g of co-emulsifier dodecanol.

[0064] Example 4

[0065] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier MOA-3, and 3.2 g of emulsifier EL-10 were prepared into a water-dispersible reactive light stabilizer.

[0066] Example 5

[0067] 31.2 g of reactive light stabilizer LRHALS, 4 g of emulsifier MOA-3, and 5.2 g of emulsifier EL-10 were prepared into a water-dispersible reactive light stabilizer.

[0068] Example 6

[0069] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier MOA-3, and 2 g of emulsifier EL-10 were prepared into a water-dispersible reactive light stabilizer.

[0070] Example 7

[0071] 31.2 g of reactive light stabilizer LRHALS, 2 g of emulsifier MOA-3, and 3.2 g of emulsifier EL-10 were prepared into a water-dispersible reactive light stabilizer.

[0072] Comparative Example 1

[0073] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 12.5 g of emulsifier MOA-3, and 5 g of co-emulsifier dodecanol.

[0074] Comparative Example 2

[0075] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 12.5 g of emulsifier E-1310, and 5 g of co-emulsifier dodecanol.

[0076] Comparative Example 3

[0077] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 5 g of emulsifier MS-1, 5 g of emulsifier MOA-3, and 5 g of co-emulsifier dodecanol.

[0078] Comparative Example 4

[0079] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 5 g of emulsifier AES, 5 g of emulsifier MOA-3, and 5 g of co-emulsifier dodecanol.

[0080] Comparative Example 5

[0081] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 5 g of emulsifier EL-1310, 5 g of emulsifier OP-7, and 5 g of co-emulsifier dodecanol.

[0082] Comparative Example 6

[0083] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 5 g of emulsifier EL-1310, 5 g of emulsifier NP-10, and 5 g of co-emulsifier dodecanol.

[0084] Comparative Example 7

[0085] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 5 g of emulsifier A110, 5 g of emulsifier MOA-3, and 5 g of co-emulsifier dodecanol.

[0086] Comparative Example 8

[0087] A water-dispersible reactive light stabilizer was prepared by adding 50 g of reactive ultraviolet absorber UV-400, 25 g of reactive light stabilizer LRHALS, 5 g of emulsifier EL-1310, 5 g of emulsifier PEG-200, and 5 g of co-emulsifier dodecanol.

[0088] Comparative Example 9

[0089] 14.5 g of reactive ultraviolet absorber UV-400, 4.1 g of emulsifier EL-10, and 3.9 g of co-emulsifier lauryl alcohol were prepared into a water-dispersible reactive light stabilizer.

[0090] Comparative Example 10

[0091] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier MOA-3, and 5.2 g of emulsifier E-1310 were prepared into a water-dispersible reactive light stabilizer.

[0092] Comparative Example 11

[0093] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier MOA-3, and 3.2 g of emulsifier MS-1 were prepared into a water-dispersible reactive light stabilizer.

[0094] Comparative Example 12

[0095] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier MOA-3, and 3.2 g of emulsifier AES were prepared into a water-dispersible reactive light stabilizer.

[0096] Comparative Example 13

[0097] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier OP-7, and 3.2 g of emulsifier EL-10 were prepared into a water-dispersible reactive light stabilizer.

[0098] Comparative Example 14

[0099] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier MOA-3, and 3.2 g of emulsifier A110 were prepared into a water-dispersible reactive light stabilizer.

[0100] Comparative Example 15

[0101] 31.2 g of reactive light stabilizer LRHALS, 3 g of emulsifier PEG-200, and 3.2 g of emulsifier EL-10 were prepared into a water-dispersible reactive light stabilizer.

[0102] Performance evaluation test

[0103] (1) Evaluation of water dispersibility and static stability

[0104] The water-dispersible reactive composite light stabilizer prepared in the above example was mixed uniformly with deionized water at a weight ratio of 1:5. The water dispersion of the composite light stabilizer emulsion was visually observed at the initial stage, after standing for 3 days, and after standing for 21 days. A uniform emulsion indicated good water dispersion, while a poorer emulsion indicated poor water dispersion. The aqueous dispersion was allowed to stand at room temperature and observed for signs of delamination, sedimentation, turbidity, or gelation. The results are shown in Table 1.

[0105] Table 1

[0106] (2) Storage stability at high and low temperatures

[0107] In order to meet the needs of different regions and temperatures, the composite light stabilizer was stored at 50°C, room temperature (25°C), 2°C, -7°C and -20°C, and the presence of stratification, sedimentation, turbidity, gelation, etc. was recorded and observed every day. The results are shown in Table 2:

[0108] Table 2

[0109] (3) Long-term storage stability in water-based coatings

[0110] Solvent-based reactive composite light stabilizers cannot disperse evenly in water (there is no stratification and oily precipitation). Therefore, when used in water-based polymer materials, especially water-based coatings, it is difficult to disperse evenly, which can easily cause the coating to lose gloss and bloom. This water-dispersible reactive light stabilizer can be well dispersed in water-based coatings and is more convenient to add.

[0111] The composite light stabilizer was added to a one-component acrylic waterborne industrial paint system (see Table 4 for specific components) at a weight ratio of 2%, and the paint was left at room temperature. The surface was observed every few days for delamination or precipitation. The results are shown in Table 3:

[0112] Table 3

[0113] (4) Evaluation of long-term weathering effect A. Evaluation of the improvement of weathering performance of water-based dispersible reactive composite light stabilizer in one-component acrylic water-based industrial paint.

[0114] The following one-component acrylic water-based industrial paint was used as the water-based polymer material to be evaluated. Its formula is as follows:

[0115] Table 4

[0116] Based on the above waterborne industrial paint system, the composite light stabilizers of Example 1 and Example 4 were added respectively, with the added amount being 2.1% of the total weight of the waterborne industrial paint. The following test paint samples were obtained by adding different types of light stabilizers.

[0117] Coating test panels were spray-coated as follows: Steel plates were uniformly used as substrates and sanded on both sides with 800-grit sandpaper. A gray epoxy primer was sprayed on both sides to a film thickness of 20 microns, allowed to flow at room temperature for 10 minutes, oven-baked at 120°C for 30 minutes, and sanded with 800-grit sandpaper. A water-based gray midcoat was sprayed on to a film thickness of 25 microns, allowed to flow at room temperature for 10 minutes, oven-baked at 80°C for 10 minutes, then oven-baked at 145°C for 30 minutes, and sanded with 2000-grit sandpaper. A white water-based industrial topcoat was sprayed on to a film thickness of 35 microns, allowed to flow at room temperature for 10 minutes, and oven-baked at 130°C for 20 minutes. Xenon arc and QUV testing began three days after surface conditioning.

[0118] The QUV test conditions are as follows: the test panel is placed in a QUV UV aging light box (model: Q-Lab QUV / Spray UV fluorescent aging test box), and the test standard refers to ASTM G154-06 cylce.

[0119] The xenon lamp test conditions are as follows: the test panel is placed in a xenon lamp aging chamber (model: ATLAS Ci4400 xenon lamp aging chamber), and the test standard is SAE J2527 / J1960.

[0120] The test plate was taken out at regular intervals to measure the color difference value. The colorimeter was an X-rite MA5 spectrophotometer. The test results are shown in Figures 1 and 2, wherein Figure 1 shows the color difference change curve of the water-dispersible reactive composite light stabilizer provided in Example 1 and Example 4 after application in a one-component acrylic water-based industrial paint under QUV aging test (the blank group was the one in which no anti-aging additive was added), and Figure 2 shows the color difference change curve of the water-dispersible reactive composite light stabilizer provided in Example 1 and Example 4 after application in a one-component acrylic water-based industrial paint under xenon lamp aging test (the blank group was the one in which no anti-aging additive was added).

[0121] B. Evaluation of the weather resistance improvement of water-based dispersible reactive composite light stabilizer in two-component water-based acrylic polyurethane topcoat. The following two-component water-based acrylic polyurethane topcoat was used as the water-based polymer material to be evaluated. Its formula is as follows:

[0122] Table 5

[0123] In the aforementioned waterborne acrylic polyurethane topcoat system, the ratio of A:B (NCO:OH) was 1.1:1. The composite light stabilizers of Examples 1 and 4 were added, respectively, in amounts equal to 2.1% of the total weight of the two-component waterborne acrylic polyurethane topcoat. The following test coating samples were obtained by adding different types of light stabilizers.

[0124] Coating test panels were sprayed and prepared using the following method: Steel plates were uniformly used as substrates, sanded on both sides with 800-grit sandpaper. A gray epoxy primer was sprayed onto both sides to a film thickness of 20 microns, allowed to flow at room temperature for 10 minutes, oven-baked at 120°C for 30 minutes, and sanded with 800-grit sandpaper. A solvent-based gray midcoat was sprayed onto both sides to a film thickness of 25 microns, allowed to flow at room temperature for 10 minutes, oven-baked at 60°C for 30 minutes, and sanded with 2000-grit sandpaper. A blue water-based topcoat was sprayed onto both sides to a film thickness of 50 microns, allowed to flow at room temperature for 10 minutes, and oven-baked at 80°C for 20 minutes. Xenon arc and QUV testing began three days after surface conditioning.

[0125] The QUV test conditions are as follows: the test panel is placed in a QUV UV aging light box (model: Q-Lab QUV / Spray UV fluorescent aging test box), and the test standard refers to ASTM G154-06 cylce.

[0126] The xenon lamp test conditions are as follows: the test panel is placed in a xenon lamp aging chamber (model: ATLAS Ci4400 xenon lamp aging chamber), and the test standard is SAE J2527 / J1960.

[0127] The test plate was taken out at regular intervals to measure the color difference value. The colorimeter used was an X-rite MA5 spectrophotometer. The test results are shown in Figures 3 and 4, wherein Figure 3 shows the color difference change curve of the QUV aging test of the water-based dispersible reactive composite light stabilizer provided in Example 1 and Example 4 after application to a two-component water-based acrylic polyurethane topcoat (the blank group is a group without the addition of an anti-aging additive), and Figure 4 shows the color difference change curve of the xenon lamp aging test of the water-based dispersible reactive composite light stabilizer provided in Example 1 and Example 4 after application to a two-component water-based acrylic polyurethane topcoat (the blank group is a group without the addition of an anti-aging additive).

[0128] The hydroxyl groups in the water-dispersible reactive light stabilizer of the present application can undergo chemical cross-linking with the isocyanate groups in the polyurethane resin, and ultimately the small molecule hindered amine light stabilizer is linked to the matrix polymer chain. Therefore, the addition of this composite light stabilizer has a better long-term anti-aging effect on the above-mentioned system.

[0129] C. Evaluation of the anti-migration properties of water-based dispersible reactive composite light stabilizers in plastic coatings.

[0130] With the trend of replacing steel and wood with plastic, the use of plastic continues to grow. For aesthetic and protective purposes, plastic coatings can be applied to plastic substrates. For plastic surfaces used outdoors for extended periods, such as on automobiles, the coating can degrade due to light and heat. The addition of hindered amine light stabilizers (HALSs) can slow this degradation process. However, many plastic substrates are inherently plastic, providing some "free space" within the substrate for the migration of small HALS molecules. This test used PP, a typical plastic material.

[0131] Based on the water-based acrylic polyurethane topcoat system (the formula is the same as Table 6), the composite light stabilizer was added in the blank group at a weight ratio of 2.1%.

[0132] The following test coating samples were obtained by adding different types of light stabilizers.

[0133] Coating test panels were sprayed using the following method: PP substrates were uniformly used, and a PP-specific primer was uniformly sprayed to a film thickness of 6 microns. The primer was allowed to flow at room temperature for 10 minutes until dry. A solvent-based gray midcoat was uniformly sprayed to a film thickness of 25 microns. The primer was allowed to flow at room temperature for 10 minutes, then oven-baked at 60°C for 30 minutes and sanded with 2000-grit sandpaper. A blue water-based topcoat was sprayed to a film thickness of 50 microns. The primer was allowed to flow at room temperature for 10 minutes, then oven-baked at 80°C for 20 minutes. Xenon arc and QUV testing began three days after surface conditioning.

[0134] The QUV test conditions are as follows: the test panel is placed in a QUV UV aging light box (model: Q-Lab QUV / Spray UV fluorescent aging test box), and the test standard refers to ASTM G154-06 cylce.

[0135] The xenon lamp test conditions are as follows: the test panel is placed in a xenon lamp aging chamber (model: ATLAS Ci4400 xenon lamp aging chamber), and the test standard is SAE J2527 / J1960.

[0136] The test panels were removed at regular intervals and the color difference values ​​were measured. The colorimeter used was an X-rite MA5 spectrophotometer. The test results are shown in Figures 5 and 6. Figure 5 shows the color difference curves of the water-based dispersible reactive composite light stabilizers provided in Examples 1 and 4 after application to plastic coatings during QUV aging testing (the blank control group was free of anti-aging additives). Figure 6 shows the color difference curves of the water-based dispersible reactive composite light stabilizers provided in Examples 1 and 4 after application to plastic coatings during Xenon lamp aging testing (the blank control group was free of anti-aging additives).

[0137] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A water-dispersible reactive light stabilizer, characterized in that: The water-dispersible reactive light stabilizer comprises: The first component: a reactive hindered amine light stabilizer and / or a reactive ultraviolet absorber; wherein the reactive hindered amine light stabilizer is R1' is a C1-C10 alkyl group; the reactive ultraviolet absorber is R1, R2, R3 and R4 are independently selected from C1-C4 alkyl groups, and R5 is selected from C8-C20 alkyl groups or mixed alkyl groups; The second component: an emulsifier; the emulsifier is at least two nonionic surfactants, or includes at least one anionic surfactant and at least one nonionic surfactant; the anionic surfactant is a sulfonate anionic surfactant or a phosphate anionic surfactant; Optional third component: co-emulsifier; When the first component contains the reactive ultraviolet absorber, the water-dispersible reactive light stabilizer must contain the third component.

2. The water-dispersible reactive light stabilizer according to claim 1, characterized in that Each of the nonionic surfactants is independently selected from octylphenol polyoxyethylene ether series, nonylphenol polyoxyethylene ether series, castor oil polyoxyethylene ether series, hydrogenated castor oil polyoxyethylene ether series, fatty alcohol polyoxyethylene ether series, isomeric alcohol polyoxyethylene ether series, fatty acid polyoxyethylene ester series surfactants, polyethylene glycol series or polypropylene glycol series surfactants; Preferably, among the at least two nonionic surfactants, the castor oil polyoxyethylene ether series does not exist simultaneously with the nonylphenol polyoxyethylene ether series, the octylphenol polyoxyethylene ether series or the polyethylene glycol series, and the fatty acid polyoxyethylene ester series does not exist simultaneously with the fatty alcohol polyoxyethylene ether series; Preferably, among the at least one anionic surfactant and the at least one nonionic surfactant, the anionic surfactant is not a sulfate-type anionic surfactant.

3. The water-dispersible reactive light stabilizer according to claim 1, characterized in that R1' is a C6-C10 alkyl group; R1, R2, R3 and R4 are independently selected from methyl or tert-butyl groups, and R5 is selected from a C12-C16 alkyl group or a mixed alkyl group; Preferably, the reactive ultraviolet absorber is one or more, and when the reactive ultraviolet absorber is multiple, R5 in different reactive ultraviolet absorbers is different; Preferably, the reactive hindered amine light stabilizer is The reactive ultraviolet absorber is 4. The water-dispersible reactive light stabilizer according to any one of claims 1 to 3, characterized in that In the water-dispersible reactive light stabilizer, the weight ratio of the reactive hindered amine light stabilizer to the reactive ultraviolet absorber is 0-95:0-95, preferably 5-40:10-70, and more preferably 20-30:45-55.

5. The water-dispersible reactive light stabilizer according to any one of claims 1 to 4, characterized in that The sulfonate type anionic surfactant is alkylbenzene sulfonate, α-olefin sulfonate, alkyl sulfonate, α-sulfomonocarboxylic acid and its derivatives, fatty acid sulfonalkyl ester or fatty acid sulfonalkyl amide; the phosphate ester anionic surfactant is alkyl phosphate monoester salt, alkyl phosphate diester salt, alcohol ether, ester ether phosphate monoester salt or ester ether phosphate diester salt; The octylphenol polyoxyethylene ether series surfactant is selected from at least one of OP-4, OP-5, OP-6, OP-7, and OP-10; the nonylphenol polyoxyethylene ether series surfactant is selected from at least one of NP-4, NP-5, NP-6, NP-7, and NP-10; the castor oil polyoxyethylene ether series surfactant is selected from at least one of EL-10, EL-12, EL-20, EL-30, EL-40, and EL-60; the hydrogenated castor oil polyoxyethylene ether series surfactant is selected from at least one of HEL-20, HEL-40 ; The fatty alcohol polyoxyethylene ether series surfactant is selected from at least one of MOA-3, MOA-4, MOA-5, MOA-7, and MOA-9; the isomeric alcohol polyoxyethylene ether series surfactant is selected from at least one of E1302, E1304, E1306, E1308, E1310, and E1312; the ester nonionic surfactant is a fatty acid polyoxyethylene ester series surfactant selected from at least one of A105, A110, and A115; the polyethylene glycol series surfactant is selected from PEG200, PEG300, PEG400, At least one of PEG600, PEG800, and PEG1000; the polypropylene glycol series surfactant is selected from at least one of PPG200, PPG400, PPG600, and PPG1000.

6. The water-dispersible reactive light stabilizer according to any one of claims 1 to 5, characterized in that When the first component contains the reactive ultraviolet absorber, the emulsifier is a compound of the fatty alcohol polyoxyethylene ether series surfactant and the isomeric alcohol polyoxyethylene ether series surfactant; preferably, the weight ratio of the fatty alcohol polyoxyethylene ether series surfactant to the isomeric alcohol polyoxyethylene ether series surfactant is 5-7.5:5-10; more preferably, the emulsifier is a compound of MOA-3 surfactant and E-1310 surfactant; When the first component contains only the reactive hindered amine light stabilizer, the emulsifier is a compound of the fatty alcohol polyoxyethylene ether series surfactant and the castor oil polyoxyethylene ether series surfactant; preferably, the weight ratio of the fatty alcohol polyoxyethylene ether series surfactant to the castor oil polyoxyethylene ether series surfactant is 2-4:2-5.2; more preferably, the emulsifier is a compound of MOA-3 surfactant and EL-10 surfactant.

7. The water-dispersible reactive light stabilizer according to any one of claims 1 to 6, characterized in that The amount of the emulsifier used is 10-30% by weight of the first component, more preferably 13-23% by weight.

8. The water-dispersible reactive light stabilizer according to any one of claims 1 to 7, characterized in that The amount of the co-emulsifier is 3-10% by weight of the first component, more preferably 3.3-6.7%; The co-emulsifier is a C8 to C18 fatty alcohol, preferably lauryl alcohol.

9. A water-based polymer material, comprising a light stabilizer, characterized in that: The light stabilizer is a water-dispersible reactive light stabilizer according to any one of claims 1 to 8; Preferably, the water-based polymer material is a water-based acrylic resin material, a water-based polyurethane material, a water-based amino resin material, a water-based epoxy resin material, a water-based alkyd resin material, a water-based polyester resin material or a water-based phenolic resin material.

10. A water-based polymer material product, characterized in that: The water-dispersible reactive light stabilizer according to any one of claims 1 to 8 is included, and the water-based polymer material product is a water-based paint, a water-based adhesive, a water-based ink, a water-based sealant, a water-based leather or a water-based sole slurry.

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