Ultraviolet light absorber with high solubility

Abstract

The invention discloses a high-solubility ultraviolet light absorber which is characterized by being prepared by the following steps: step 1, mixing alkali and pure water substances to obtain an alkaline solution; 2, cooling the alkaline solution and carrying out alkalinity detection; 3, adding a mixed alkaline solution of dimethyl sulfate, polyethylene glycol carbamate and benzotriazole raw materials; 4, reacting and mixing the extracted mixed solution with a nano material and an additive to obtain an ultraviolet light absorber; and 5, detecting the ultraviolet light absorber. Additives such as an alkaline solution and a softening agent are added when the ultraviolet light absorber is mixed, so that the ultraviolet light absorber can be mixed more effectively when being fused with other coatings or plastic products after being manufactured, and nano materials with different proportions are added, so that the ultraviolet light absorber can be mixed more effectively. According to the present invention, the ultraviolet light absorber can have different strength grades so as to improve the use durability of the ultraviolet light absorber.

Description

Technical Field

[0001] The invention relates to the technical field of ultraviolet absorbers, in particular to an ultraviolet absorber with high solubility. Background Art

[0002] Ultraviolet absorber is a highly efficient light stabilizer with a wide range of ultraviolet absorption properties and low volatility. It is suitable for materials such as polystyrene, polymethyl methacrylate, polyester, rigid polyvinyl chloride, polycarbonate, ABS resin, etc. It has good UV resistance in transparent products, plastic products, cloth products and coatings. It has a high-quality synergistic effect when used with antioxidants to improve the weather resistance and thermal oxygen stability of the products. However, existing ultraviolet absorbers have some shortcomings, such as:

[0003] Application number: CN202111394467.5. The ultraviolet absorber, preparation method and use thereof are simple, economical and convenient for industrial production. The ultraviolet absorber is also suitable for industrial preparation of anti-ultraviolet aging biodegradable masterbatch or film. However, in actual use, since the ultraviolet absorber is made of chemical materials such as metal carbonate, the solubility of the absorber may decrease, which may make it difficult to fuse the coating or plastic product with the ultraviolet absorber.

[0004] Therefore, we propose a highly soluble ultraviolet absorber to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a highly soluble ultraviolet absorber to solve the problem raised in the above-mentioned background art that most ultraviolet absorbers on the market are made of chemical materials such as metal carbonates, which may lead to a decrease in the solubility of the absorber and may make it difficult to integrate coatings or plastic products when they are integrated with the ultraviolet absorber.

[0006] To achieve the above object, the present invention provides the following technical solution: a highly soluble ultraviolet absorber, characterized in that it comprises the following steps:

[0007] Step 1: Pour a liquid consisting of alkali and pure water into a reactor. When the liquid is odorless and strongly alkaline, purify the liquid, then cool the liquid and test the alkalinity of the liquid again. If it is strongly alkaline, an alkaline solution is obtained.

[0008] Step 2: Pour the alkaline solution into a cooling device and cool the alkaline solution by the cooling device. When the temperature reaches 20°C to -20°C, take out the alkaline solution and observe and test the color, purity and consistency of the alkaline solution;

[0009] Step 3: Pour the cooled alkaline solution into a reactor, then add dimethyl sulfate, polyethylene glycol carbamate, benzotriazole and other raw materials to the alkaline solution for mixing and reacting. When the mixed solution becomes weakly alkaline, extract the mixed solution;

[0010] Step 4: Pour the extracted mixed solution, nanomaterials and additives into a reactor, so that the mixed solution, nanomaterials and additives are fused to obtain a UV absorber, and then cool the UV absorber;

[0011] Step 5: Testing the UV absorber: adding a dissolving liquid to the UV absorber sample to be tested or placing it in a dissolving device for dissolution, so as to detect the dissolution rate and dissolution condition of the UV absorber and thereby obtain the solubility coefficient.

[0012] By adding additives such as an alkaline solution and a softener when mixing the ultraviolet absorber, the ultraviolet absorber can be more effectively mixed with other coatings or plastic products after manufacturing. By adding different proportions of nanomaterials, the ultraviolet absorber can have different levels of strength, thereby increasing the durability of the ultraviolet absorber.

[0013] As a preferred technical solution of the present invention, when alkali and pure water substances are mixed to form an alkaline solution, the alkaline solution can be detected by a fluorescent probe device. When the fluorescent probe device is used for detection, a small portion of the alkaline solution can be removed as a sample, and then the reaction liquid is poured into it to make the alkaline solution react, and then the alkaline solution is detected by a fluorescent probe.

[0014] The above technical solution can make it more convenient to detect the alkalinity of alkaline solutions, so that when alkaline solutions with different compositions are detected, they can be detected by fluorescent probes, thereby increasing the convenience in detecting alkaline solutions.

[0015] As a preferred technical solution of the present invention, the alkali used in the alkaline solution is a metal alkali or a compound alkali, the metal alkali is composed of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr), and the main components of the compound alkali are calcium hydroxide (CaH2O2), activated white mud, diatomaceous earth and activated carbon.

[0016] As a preferred technical solution of the present invention, when the alkaline solution or mixed solution is cooled, an ultraviolet germicidal lamp is placed in the cooling tower inside the cooling device to irradiate the cold air released inside the cooling tower, wherein the ultraviolet germicidal lamp can irradiate a far ultraviolet pulse beam of 220-300 nanometers as a sterilization light source;

[0017] A pressure sensor and a temperature sensor are provided inside the cooling device. When cooling the alkaline solution or the mixed solution, the cooling condition of the alkaline solution or the mixed solution can be observed through the pressure sensor and the temperature sensor.

[0018] The above technical solution can sterilize the cold air inside the cooling device by using an ultraviolet germicidal lamp when cooling the alkaline solution or mixed solution, so that the alkaline solution or mixed solution is in a sterile environment during cooling, avoiding affecting the purity of the alkaline solution and the mixed solution.

[0019] As a preferred technical solution of the present invention, the molecular weight of dimethyl sulfate is 122, the density is 1.33, and the melting point is -20°C; and the molecular weight of polyethylene glycol carbamate is 91, the melting point is 48-50°C, and dimethyl sulfate and polyethylene glycol carbamate need to be sealed and stored;

[0020] When dimethyl sulfate and polyethylene glycol carbamate are mixed with an alkaline solution, a catalyst can be added to make the dimethyl sulfate and polyethylene glycol carbamate more evenly mixed when reacting with the alkaline solution. The type of catalyst is a positive catalyst.

[0021] The above technical solution can prevent dimethyl sulfate and polyethylene glycol carbamate from being damaged during storage, and the addition of a catalyst can improve the uniformity of dimethyl sulfate and polyethylene glycol carbamate when mixed with an alkaline solution.

[0022] As a preferred technical solution of the present invention, when the alkaline solution and the nanomaterial are fused, the ratio of the alkaline solution to the nanomaterial is 20:1 to 30:1. Before the alkaline solution reacts with the additive, the alkaline solution needs to be filtered and then mixed with the additive.

[0023] The above technical solution can improve the strength and durability of the mixed solution when the alkaline solution is mixed with the nanomaterial, thereby increasing the durability of the ultraviolet absorber.

[0024] As a preferred technical solution of the present invention, when testing the ultraviolet absorber sample, the sample can be placed in a degradation box for observation, so that the solubility and dissolution rate of the ultraviolet absorber sample can be obtained. When testing the ultraviolet absorber sample, it is necessary to ensure that the interior of the degradation box is in a dust-free and sterile state.

[0025] The above technical solution can prevent the ultraviolet absorber sample from being affected by external factors when being degraded and analyzed for solubility in a degradation box, thereby improving the accuracy of the solubility value of the ultraviolet absorber sample.

[0026] As a preferred technical solution of the present invention, the type of additive in the mixed solution during the manufacturing process is a softener selected from the group consisting of polyethylene wax softener, hydroxyl-terminated polysiloxane emulsion, hydrophilic silicone softener, aminopolysiloxane emulsion, aminopolysiloxane microemulsion softener, and silicone softener.

[0027] Silicone softeners are easily soluble in water, the aqueous solution is extremely stable, has good compatibility, and has good antistatic properties. The main components are dimethyl polysiloxane and active groups, and no residue will be produced when reacting with the mixed solution.

[0028] The above technical solution enables the softener to sterilize the inside of the ultraviolet absorber, thereby increasing the storage time of the ultraviolet absorber. In addition, by adding the softener inside the ultraviolet absorber, the friction coefficient of the ultraviolet absorber can be changed.

[0029] As a preferred technical solution of the present invention, when the alkaline solution or mixed solution undergoes a mixing reaction inside the reactor, a filtering mechanism can be set inside the reactor, so that after the alkaline solution or mixed solution reacts and mixes with other additives or materials, the residue inside the solution can be removed by the filtering mechanism.

[0030] The above technical solution can filter the residue of the alkaline solution or mixed solution through the filtering mechanism when the alkaline solution or mixed solution reacts and mixes inside the reactor, thereby ensuring the purity of the ultraviolet absorber.

[0031] As a preferred technical solution of the present invention, when the raw materials such as dimethyl sulfate, polyethylene glycol carbamate and benzotriazole are mixed for use, they need to be dissolved by a heating device first and then mixed with an alkaline solution.

[0032] The above technical solution can prevent excessive residue from occurring when the alkaline solution is mixed with raw materials such as dimethyl sulfate, polyethylene glycol carbamate and benzotriazoles, thereby reducing the possibility of material waste.

[0033] Compared with the prior art, the present invention has the following advantages: by adding additives such as an alkaline solution and a softener when mixing the ultraviolet absorber, the ultraviolet absorber can be more effectively mixed with other coatings or plastic products after manufacturing. Moreover, by adding different proportions of nanomaterials, the ultraviolet absorber can have different strength levels, thereby increasing the durability of the ultraviolet absorber.

[0034] Furthermore, by detecting the alkaline solution with a fluorescent probe, it is possible to more conveniently detect the alkalinity of the alkaline solution, thereby enabling detection of alkaline solutions with different compositions by the fluorescent probe;

[0035] Furthermore, by arranging an ultraviolet sterilization lamp inside the cooling device, the cold air inside the cooling device can be sterilized by the ultraviolet sterilization lamp when the alkaline solution or the mixed solution is cooled, so that the alkaline solution or the mixed solution is in a sterile environment when cooled, avoiding affecting the purity of the alkaline solution and the mixed solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the process structure of the present invention;

[0037] Figure 2 It is a detailed process structure schematic diagram of the present invention. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Example 1:

[0040] See also Figure 1-Figure 2 The present invention provides a technical solution: a highly soluble ultraviolet absorber, characterized in that it comprises the following steps:

[0041] Step 1: Pour a liquid consisting of alkali and pure water into a reactor. When the liquid is odorless and strongly alkaline, purify the liquid, then cool the liquid and test the alkalinity of the liquid again. If it is strongly alkaline, an alkaline solution is obtained.

[0042] Step 2: Pour the alkaline solution into a cooling device and cool the alkaline solution by the cooling device. When the temperature reaches 20°C to -20°C, take out the alkaline solution and observe and test the color, purity and consistency of the alkaline solution;

[0043] Step 3: Pour the cooled alkaline solution into a reactor, then add dimethyl sulfate, polyethylene glycol carbamate, benzotriazole and other raw materials to the alkaline solution for mixing and reacting. When the mixed solution becomes weakly alkaline, extract the mixed solution;

[0044] Step 4: Pour the extracted mixed solution, nanomaterials and additives into a reactor, so that the mixed solution, nanomaterials and additives are fused to obtain a UV absorber, and then cool the UV absorber;

[0045] Step 5: Testing the UV absorber: adding a dissolving liquid to the UV absorber sample to be tested or placing it in a dissolving device for dissolution, so as to detect the dissolution rate and dissolution condition of the UV absorber and thereby obtain the solubility coefficient.

[0046] When alkali and pure water are mixed to form an alkaline solution, the alkaline solution can be detected by a fluorescent probe device. When the fluorescent probe device is used for detection, a small portion of the alkaline solution can be removed as a sample, and then a reaction solution is poured into it to make the alkaline solution react, and then the alkaline solution is detected by a fluorescent probe; the alkali used in the alkaline solution is a metal alkali or a composite alkali, and the metal alkali is composed of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr), and the main components of the composite alkali are calcium hydroxide (CaH2O2), activated white mud, diatomaceous earth, and activated carbon;

[0047] When the alkaline solution or mixed solution is cooled, an ultraviolet germicidal lamp is placed in the cooling tower inside the cooling device to irradiate the cold air released from the cooling tower, wherein the ultraviolet germicidal lamp can irradiate a 220-300 nanometer ultraviolet pulse beam as a sterilization light source; a pressure sensor and a temperature sensor are provided inside the cooling device, and when the alkaline solution or mixed solution is cooled, the cooling status of the alkaline solution or mixed solution can be observed through the pressure sensor and the temperature sensor;

[0048] The molecular weight of dimethyl sulfate is 122, the density is 1.33, and the melting point is -20°C; the molecular weight of polyethylene glycol carbamate is 91, and the melting point is 48-50°C, and the dimethyl sulfate and polyethylene glycol carbamate need to be sealed and stored; when the dimethyl sulfate and polyethylene glycol carbamate are mixed with the alkaline solution, a catalyst can be added to make the dimethyl sulfate and polyethylene glycol carbamate more evenly mixed when reacting with the alkaline solution, and the type of the catalyst is a positive catalyst;

[0049] When the alkaline solution and the nanomaterial are combined, the ratio of the alkaline solution to the nanomaterial is 20:1. Before the alkaline solution reacts with the additive, the alkaline solution needs to be filtered and then mixed with the additive.

[0050] When testing the UV absorber sample, the sample can be placed in a degradation box for observation, so that the solubility and dissolution rate of the UV absorber sample can be obtained. When testing the UV absorber sample, it is necessary to ensure that the interior of the degradation box is in a dust-free and sterile state; the type of additive in the mixed solution during the manufacturing process is a softener, which is one of polyethylene wax softener, terminal hydroxyl polysiloxane emulsion, hydrophilic silicone softener, amino polysiloxane emulsion, and amino polysiloxane microemulsion softener;

[0051] When the alkaline solution or mixed solution is mixed and reacted inside the reactor, a filtering mechanism can be set inside the reactor so that the residue inside the solution can be removed by the filtering mechanism after the alkaline solution or mixed solution is reacted and mixed with other additives or materials; when raw materials such as dimethyl sulfate, polyethylene glycol carbamate and benzotriazole are mixed and used, they need to be dissolved by a heating device first and then mixed with the alkaline solution;

[0052] By adding less nanomaterials, the strength and durability of the ultraviolet absorber can be improved, and by adding polyethylene wax softener to the ultraviolet absorber, the ultraviolet absorber can be made to have the characteristics of anti-scratch, anti-wear, anti-polishing, anti-engraving, anti-adhesion, anti-precipitation, and thixotropy; so that the ultraviolet absorber will not be deposited during storage.

[0053] Example 2:

[0054] This embodiment differs from the first embodiment in that: a highly soluble ultraviolet absorber is characterized by comprising the following steps:

[0055] Step 1: Pour a liquid consisting of alkali and pure water into a reactor. When the liquid is odorless and strongly alkaline, purify the liquid, then cool the liquid and test the alkalinity of the liquid again. If it is strongly alkaline, an alkaline solution is obtained.

[0056] Step 2: Pour the alkaline solution into a cooling device and cool the alkaline solution by the cooling device. When the temperature reaches 20°C to -20°C, take out the alkaline solution and observe and test the color, purity and consistency of the alkaline solution;

[0057] Step 3: Pour the cooled alkaline solution into a reactor, then add dimethyl sulfate, polyethylene glycol carbamate, benzotriazole and other raw materials to the alkaline solution for mixing and reacting. When the mixed solution becomes weakly alkaline, extract the mixed solution;

[0058] Step 4: Pour the extracted mixed solution, nanomaterials and additives into a reactor, so that the mixed solution, nanomaterials and additives are fused to obtain a UV absorber, and then cool the UV absorber;

[0059] Step 5: Testing the UV absorber: adding a dissolving liquid to the UV absorber sample to be tested or placing it in a dissolving device for dissolution, so as to detect the dissolution rate and dissolution condition of the UV absorber and thereby obtain the solubility coefficient.

[0060] When the alkaline solution is combined with the nanomaterial, the ratio of the alkaline solution to the nanomaterial is 30:1. Before the alkaline solution reacts with the additive, the alkaline solution needs to be filtered and then mixed with the additive.

[0061] The additive type used in the manufacturing process of the mixed solution is a softener, which is a type of silicone softener. Silicone softeners are easily soluble in water, and their aqueous solutions are extremely stable, have good compatibility, and have good antistatic properties. Their main components are dimethyl polysiloxane and active groups, and they will not produce residue when reacting with the mixed solution.

[0062] By adding more nanomaterials, the strength and durability of the ultraviolet absorber in Example 2 can be increased. When a material with higher solubility is attached or mixed, the durability of the ultraviolet absorber can be further increased. By using a silicone softener as the main softener, the wear resistance of the ultraviolet absorber can be increased.

[0063] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A highly soluble ultraviolet absorber, characterized in that: The steps include: Step 1: Pour the liquid composed of alkali and pure water into the reactor. When the liquid is odorless and strongly alkaline, purify the liquid, then cool the liquid, and test the alkalinity of the liquid again. If it is strongly alkaline, an alkaline solution is obtained; Step 2: Pour the alkaline solution into a cooling device, cool the alkaline solution by the cooling device, and when the temperature reaches 20°C to -20°C, take out the alkaline solution and observe and detect the color, purity and consistency of the alkaline solution; Step 3: pouring the cooled alkaline solution into a reaction kettle, and then adding raw materials such as dimethyl sulfate, polyethylene glycol carbamate and benzotriazole to the alkaline solution for mixed reaction, and when it becomes weakly alkaline, extracting the mixed solution; Step 4: pouring the extracted mixed solution, the nanomaterial and the additive into a reaction kettle, so that the mixed solution, the nanomaterial and the additive are fused to obtain an ultraviolet absorber, and then cooling the ultraviolet absorber; Step 5: Test the ultraviolet absorber. Add the ultraviolet absorber sample to be tested into a dissolving liquid or put it into a dissolving device for dissolution. This can detect the dissolution rate and dissolution conditions of the ultraviolet absorber, thereby obtaining the solubility coefficient.

2. The highly soluble ultraviolet absorber according to claim 1, characterized in that When alkali and pure water substances are mixed to form an alkaline solution, the alkaline solution can be detected by a fluorescent probe device. When the fluorescent probe device is used for detection, a small portion of the alkaline solution can be removed as a sample, and then a reaction liquid is poured in to make the alkaline solution react, and then the alkaline solution is detected by a fluorescent probe.

3. The highly soluble ultraviolet absorber according to claim 1, characterized in that The alkali used in the alkaline solution is a metal alkali or a composite alkali. The metal alkali is composed of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). The main components of the composite alkali are calcium hydroxide (CaH2O2), activated white mud, diatomaceous earth and activated carbon.

4. The highly soluble ultraviolet absorber according to claim 1, characterized in that When the alkaline solution or the mixed solution is cooled, an ultraviolet germicidal lamp is placed in the cooling tower inside the cooling device to irradiate the cold air released inside the cooling tower, wherein the ultraviolet germicidal lamp can irradiate a far ultraviolet pulse beam of 220-300 nanometers as a germicidal light source; A pressure sensor and a temperature sensor are arranged inside the cooling device. When cooling the alkaline solution or the mixed solution, the cooling condition of the alkaline solution or the mixed solution can be observed through the pressure sensor and the temperature sensor.

5. The highly soluble ultraviolet absorber according to claim 1, characterized in that The molecular weight of dimethyl sulfate is 122, the density is 1.33, and the melting point is -20°C; the molecular weight of polyethylene glycol carbamate is 91, and the melting point is 48-50°C. Dimethyl sulfate and polyethylene glycol carbamate need to be sealed and stored; When dimethyl sulfate and polyethylene glycol carbamate are mixed with an alkaline solution, a catalyst can be added to make the dimethyl sulfate and polyethylene glycol carbamate more evenly mixed when reacting with the alkaline solution. The type of the catalyst is a positive catalyst.

6. The highly soluble ultraviolet absorber according to claim 1, characterized in that When the alkaline solution and the nanomaterial are combined, the ratio of the alkaline solution to the nanomaterial is 20:1 to 30:

1. Before the alkaline solution reacts with the additive, the alkaline solution needs to be filtered and then mixed with the additive.

7. The highly soluble ultraviolet absorber according to claim 1, characterized in that When testing the UV absorber sample, the sample can be placed in a degradation box for observation, so as to obtain the solubility and dissolution rate of the UV absorber sample. When testing the UV absorber sample, it is necessary to ensure that the interior of the degradation box is in a dust-free and sterile state.

8. The highly soluble ultraviolet absorber according to claim 1, characterized in that The additive type of the mixed solution in the manufacturing process is a softener such as a polyethylene wax softener, a terminal hydroxyl polysiloxane emulsion, a hydrophilic silicone softener, an amino polysiloxane emulsion, an amino polysiloxane microemulsion softener or a silicone softener.

9. The highly soluble ultraviolet absorber according to claim 1, characterized in that When the alkaline solution or the mixed solution is mixed and reacted inside the reactor, a filtering mechanism can be arranged inside the reactor, so that after the alkaline solution or the mixed solution is reacted and mixed with other additives or materials, the residue inside the solution can be removed by the filtering mechanism.

10. The highly soluble ultraviolet absorber according to claim 1, characterized in that When raw materials such as dimethyl sulfate, polyethylene glycol carbamate and benzotriazole are mixed for use, they need to be dissolved by a heating device first and then mixed with an alkaline solution.

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