Cleaning agent for low-molecular polymer and preparation method of cleaning agent

Abstract

The invention discloses a cleaning agent for a low-molecular polymer. The cleaning agent is prepared from the following raw materials in parts by weight: 0.1 to 1.0 part of nonylphenol polyoxyethylene ether, 0.4 to 2.0 parts of laurinol polyoxyethylene ether, 7 to 28 parts of hydroxyethylidene-1, 1-diphosphonic acid, 0.4 to 3.2 parts of 3-hydroxybutyric acid, 0.5 to 4.0 parts of potassium hydroxide, 2.2 to 9.2 parts of triethanolamine, 2.4 to 9.4 parts of diethanol amine, 0.1 to 1.5 parts of n-butyl alcohol, 0.1 to 2.0 parts of isopropanol and the balance of purified water. The cleaning agent can realize rapid cleaning of a low-molecular polymer, can reduce the surface tension of a cleaning agent solution, can improve the ductility and adhesive force of an anti-rust solution on a metal surface, can form a protective film on the surface of equipment, and further can achieve a better anti-rust effect.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning agents, and in particular to a cleaning agent specially used for cleaning low molecular weight polymers and a preparation method thereof. Background Art

[0002] At present, in the production process of many products, especially in the production process of thin film processing, photovoltaic manufacturing and pharmaceutical packaging, a large amount of unstable low-molecular polymer powder and other media will be generated. These powder media will have an adverse effect on the processing quality of the product, so it is necessary to use a vacuum device to extract the above media from the processing area. The temperature of the vacuum device is high when it is running, and stable low-molecular polymer powder is not easy to deposit inside the vacuum device. When the vacuum device stops running, as the temperature decreases, some low-molecular polymer powder will adhere to the inside of the vacuum device, causing a large amount of low-molecular polymer to be deposited in the vacuum device, which will affect the normal operation of the vacuum device, so the vacuum device needs to be cleaned regularly.

[0003] Existing cleaning agents usually have poor cleaning effects on low-molecular polymer powders. It is difficult to clean the low-molecular polymer powder deposits on the surface of the equipment. In addition, during the cleaning process, the surface of the vacuum device will come into contact with water. Long-term use will also easily form rust on the surface of the equipment, affecting the service life of the equipment. Therefore, it is necessary to develop a cleaning agent specifically for low-molecular polymers. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cleaning agent specifically for cleaning rust containing low molecular weight polymers and a preparation method thereof in view of the deficiencies in the prior art.

[0005] A cleaning agent for low molecular weight polymers. The cleaning agent comprises the following raw materials and weight ratios: 0.1-1.0 parts of nonylphenol polyoxyethylene ether, 0.4-2.0 parts of lauryl alcohol polyoxyethylene ether, 7-28 parts of hydroxyethylidene diphosphoric acid, 0.4-3.2 parts of 3-hydroxybutyric acid, 0.5-4.0 parts of potassium hydroxide, 2.2-9.2 parts of triethanolamine, 2.4-9.4 parts of diethanolamine, 0.1-1.5 parts of n-butanol, 0.1-2.0 parts of isopropanol, and the remainder is purified water.

[0006] Preferably, the weight ratio of the pure water is 39.7 parts to 86.8 parts.

[0007] The invention also discloses a preparation method of a cleaning agent for low molecular polymers, which comprises the following steps: 1) putting lauryl alcohol polyoxyethylene ether into a reaction kettle by weight, adding an appropriate amount of pure water, heating to 60-80°C, and stirring for 20-40 minutes; 2) maintaining a constant temperature, adding 3-hydroxybutyric acid and hydroxyethylidene diphosphoric acid by weight to the solution, and stirring for 10-20 minutes; 3) reducing the temperature to room temperature, adding nonylphenol polyoxyethylene ether, triethanolamine, n-butanol, isopropanol, and diethanolamine by weight to the solution, and stirring for 20-40 minutes; 4) adding potassium hydroxide and an appropriate amount of pure water by weight, adjusting the pH value of the solution to 6-8, and obtaining the product.

[0008] Preferably, the raw materials and weight ratio in the above steps are: 0.1-1.0 parts of nonylphenol polyoxyethylene ether, 0.4-2.0 parts of lauryl alcohol polyoxyethylene ether, 7-28 parts of hydroxyethylidene diphosphonic acid, 0.4-3.2 parts of 3-hydroxybutyric acid, 0.5-4.0 parts of potassium hydroxide, 2.2-9.2 parts of triethanolamine, 2.4-9.4 parts of diethanolamine, 0.1-1.5 parts of n-butanol, 0.1-2.0 parts of isopropanol, and the rest is purified water.

[0009] The above scheme has the following beneficial effects: the addition of materials such as hydroxyethylidene diphosphonic acid, triethanolamine, diethanolamine, n-butanol, isopropanol, etc. into the cleaning agent can effectively improve the combination of the cleaning agent and the low-molecular polymer, and realize the rapid dissolution and cleaning of the low-molecular polymer; the triethanolamine and 3-hydroxybutyric acid in the cleaning agent have an anti-rust function, and can reduce the surface tension of the cleaning agent solution in combination with lauryl alcohol polyoxyethylene ether, improve the ductility and adhesion of the anti-rust solution on the metal surface, and can form a protective film on the surface of the equipment, thereby achieving a better anti-rust effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 This is a picture of low molecular weight polymer deposition on the device surface.

[0011] Attached Figure 2 This is a picture of the surface of the device after being cleaned by the cleaning agent of Example 1 of the present invention. DETAILED DESCRIPTION

[0012] The following is an explanation of the disclosed embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0013] Embodiment 1 The invention discloses a cleaning agent for low molecular weight polymers. The raw materials and weight ratio of the cleaning agent are as follows: 0.1 part of nonylphenol polyoxyethylene ether, 2.0 parts of lauryl alcohol polyoxyethylene ether, 7 parts of hydroxyethylidene diphosphoric acid, 3.2 parts of 3-hydroxybutyric acid, 0.5 parts of potassium hydroxide, 9.2 parts of triethanolamine, 2.4 parts of diethanolamine, 1.5 parts of n-butanol, 0.1 part of isopropanol, and 74 parts of purified water. The preparation method of the above cleaning agent comprises the following steps: 1) Put the lauryl alcohol polyoxyethylene ether into a reaction kettle according to the above weight, add an appropriate amount of purified water, heat to 60-80°C, and stir for 30 minutes; 2) Maintaining a constant temperature, add 3-hydroxybutyric acid and hydroxyethylidene diphosphonic acid to the solution by weight and stir for 15 minutes; 3) When the temperature drops to room temperature, add nonylphenol polyoxyethylene ether, triethanolamine, n-butanol, isopropanol and diethanolamine by weight into the solution and stir for 25 minutes; 4) Add potassium hydroxide and appropriate amount of purified water by weight, adjust the pH value of the solution to 6-8, and the product is obtained.

[0014] The cleaning agent contains hydroxyethylidene diphosphonic acid, triethanolamine, diethanolamine, n-butanol, isopropanol and other materials, which can effectively improve the combination of the cleaning agent and low-molecular polymers, and achieve rapid dissolution and cleaning of low-molecular polymers. The triethanolamine and 3-hydroxybutyric acid in the cleaning agent have anti-rust functions, and combined with lauryl alcohol polyoxyethylene ether, they can reduce the surface tension of the cleaning agent solution, improve the ductility and adhesion of the anti-rust solution on the metal surface, and can form a protective film on the surface of the equipment, thereby achieving a better anti-rust effect. Figure 1 , 2 By comparison, it can be clearly seen that the cleaning agent has a very good cleaning effect on low molecular weight polymer deposits.

[0015] Embodiment 2 A cleaning agent, whose constituent raw materials and weight ratio are: 1.0 part of nonylphenol polyoxyethylene ether, 0.4 part of lauryl alcohol polyoxyethylene ether, 28 parts of hydroxyethylidene diphosphoric acid, 0.4 part of 3-hydroxybutyric acid, 4.0 parts of potassium hydroxide, 2.2 parts of triethanolamine, 9.4 parts of diethanolamine, 0.1 part of n-butanol, 2.0 parts of isopropanol, and 52.5 parts of purified water The preparation method in this example is similar to that in Example 1, and therefore will not be described in detail here.

[0016] Embodiment 3 A cleaning agent, whose constituent raw materials and weight ratio are: 0.8 parts of nonylphenol polyoxyethylene ether, 0.6 parts of alcohol polyoxyethylene ether, 25 parts of hydroxyethylidene diphosphoric acid, 1.0 parts of 3-hydroxybutyric acid, 3 parts of potassium hydroxide, 4.2 parts of triethanolamine, 8.4 parts of diethanolamine, 0.7 parts of n-butanol, 1.5 parts of isopropanol, and 54.8 parts of purified water.

[0017] The preparation method in this example is similar to that in Example 1, and therefore will not be described in detail here.

[0018] Embodiment 4 The constituent raw materials and weight ratio of a cleaning agent are: 0.6 parts of nonylphenol polyoxyethylene ether, 1.4 parts of lauryl alcohol polyoxyethylene ether, 21 parts of hydroxyethylidene diphosphonic acid, 1.8 parts of 3-hydroxybutyric acid, 2.6 parts of potassium hydroxide, 6.8 parts of triethanolamine, 7 parts of diethanolamine, 0.8 parts of n-butanol, 0.6 parts of isopropanol, and 57.4 parts of purified water.

[0019] In the above embodiments, the addition of hydroxyethylidene diphosphonic acid, triethanolamine, diethanolamine and other materials into the cleaning agent can effectively improve the combination of the cleaning agent and the low molecular weight polymer to achieve rapid rust removal, and can also reduce the surface tension of the cleaning agent solution, improve the ductility and adhesion of the rust-proof solution on the metal surface, and can form a protective film on the surface of the equipment, thereby achieving a better rust-proof effect.

[0020] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the scope of the present invention.

Claims

1. A cleaning agent for low molecular weight polymers, characterized in that: The constituent raw materials and weight ratio of the cleaning agent are: 0.1-1.0 parts of nonylphenol polyoxyethylene ether, 0.4-2.0 parts of lauryl alcohol polyoxyethylene ether, 7-28 parts of hydroxyethylidene diphosphonic acid, 0.4-3.2 parts of 3-hydroxybutyric acid, 0.5-4.0 parts of potassium hydroxide, 2.2-9.2 parts of triethanolamine, 2.4-9.4 parts of diethanolamine, 0.1-1.5 parts of n-butanol, 0.1-2.0 parts of isopropanol, and the rest is purified water.

2. The cleaning agent for low molecular weight polymers according to claim 1, characterized in that: The weight ratio of the pure water is 39.7 parts to 86.8 parts.

3. A method for preparing the cleaning agent for low molecular weight polymers according to claim 1, characterized in that: It includes the following steps: 1) Put lauryl alcohol polyoxyethylene ether into the reaction kettle according to weight, add appropriate amount of purified water, heat to 60-80℃, and stir for 20-40 minutes; 2) Maintaining a constant temperature, add 3-hydroxybutyric acid and hydroxyethylidene diphosphonic acid to the solution by weight and stir for 10-20 minutes; 3) When the temperature drops to room temperature, add nonylphenol polyoxyethylene ether, triethanolamine, n-butanol, isopropanol and diethanolamine by weight into the solution and stir for 20-40 minutes; 4) Add potassium hydroxide and appropriate amount of purified water by weight, adjust the pH value of the solution to 6-8, and the product is obtained.

4. The method for preparing a cleaning agent for low molecular weight polymers according to claim 1, characterized in that: The raw materials and weight ratio in the above steps are: 0.1-1.0 parts of nonylphenol polyoxyethylene ether, 0.4-2.0 parts of lauryl alcohol polyoxyethylene ether, 7-28 parts of hydroxyethylidene diphosphoric acid, 0.4-3.2 parts of 3-hydroxybutyric acid, 0.5-4.0 parts of potassium hydroxide, 2.2-9.2 parts of triethanolamine, 2.4-9.4 parts of diethanolamine, 0.1-1.5 parts of n-butanol, 0.1-2.0 parts of isopropanol, and the rest is purified water.

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