Dewashing composition as well as preparation method and application thereof

Abstract

The invention discloses a desizing composition as well as a preparation method and application thereof. Each liter of the desizing and washing composition comprises the following components: 30-50g / L of sodium hydroxide; 100 to 150 g / L of potassium hydroxide; 10 to 30 g / L of 1-hydroxyethylidene diphosphonic acid tetrasodium salt; 5-20 g / L of citric acid; 50 to 100 g / L of nitrilotriacetic acid sodium salt; 5-20 g / L of ethylene glycol; 5-15 g / L of alkyl glycoside; 3-8 g / L of iso-tridecanol polyoxyethylene ether; 3-5 g / L of sodium citrate; and the balance of water. The desizing composition can solve the problems that an ink layer on the surface of glass is corroded after deplating of an existing deplating solution, the surface of the glass is prone to being damaged, and scratches are caused, desizing is conducted only on a film layer on a product, and glass damage and ink corrosion cannot be caused.

Description

Technical Field

[0001] This invention relates to a washing composition, its preparation method, and its application, belonging to the field of photovoltaic glass technology. Background Technology

[0002] Currently, coating defects include film contamination, AR color discrepancies, AG loss, and AR peeling. Coating crystal point defects account for the highest proportion. At present, only single coating removal solutions are available on the market, and scratch defects account for a relatively high proportion. After removal, the product cleanliness does not meet the standards and needs to be rotated and cleaned again. In order to improve production efficiency, reduce manpower and material resources, and increase company profits, a method is proposed to remove defects in the AG / AF / AR layer on products using ultrasonic cleaning or flat plate cleaning. After the solution is added to the cleaning tank and heated to the set temperature, the coating defect rack or flat plate is placed on the product and the coating layer can be removed after cleaning. Some defects in the AG layer can be removed. After cleaning, the product can be directly AG or coated again. Summary of the Invention

[0003] In view of this, the present invention provides a stripping composition, its preparation method and application, and the technical problem to be solved is to achieve the purpose of stripping and cleaning by adding the chemical components required for stripping and adding the chemical composition of the cleaning agent.

[0004] The objective of this invention and the technical problem it solves are achieved by the following technical measures. This invention provides a washing composition, each liter of which contains the following components:

[0005] Sodium hydroxide 30-50 g / L; potassium hydroxide 100-150 g / L; tetrasodium hydroxyethylidene diphosphonate 10-30 g / L; citric acid 5-20 g / L; sodium hypotriacetate 50-100 g / L; ethylene glycol 5-20 g / L; alkyl glycoside 5-15 g / L; isotridecyl alcohol polyoxyethylene ether 3-8 g / L; sodium citrate 3-5 g / L; balance: water.

[0006] The objectives of this invention and the technical problems solved can be further achieved by the following technical measures.

[0007] Preferably, the aforementioned wash composition, wherein each liter of wash composition contains the following components:

[0008] Sodium hydroxide 40-50 g / L; potassium hydroxide 110-150 g / L; tetrasodium hydroxyethylidene diphosphonate 20-30 g / L; citric acid 5-20 g / L; sodium hypotriacetate 50-100 g / L; ethylene glycol 5-10 g / L; alkyl glycoside 5-10 g / L; isotridecyl alcohol polyoxyethylene ether 5-8 g / L; sodium citrate 3-5 g / L; balance: water.

[0009] Preferably, the aforementioned wash composition, wherein each liter of wash composition contains the following components:

[0010] Sodium hydroxide 40-50 g / L; potassium hydroxide 110-150 g / L; tetrasodium hydroxyethylidene diphosphonate 20-30 g / L; citric acid 5-20 g / L; sodium hypotriacetate 60-100 g / L; ethylene glycol 5-10 g / L; alkyl glycoside 10-15 g / L; isotridecyl alcohol polyoxyethylene ether 5-8 g / L; sodium citrate 3-5 g / L; balance: water.

[0011] Preferably, the aforementioned wash composition, wherein each liter of wash composition contains the following components:

[0012] Sodium hydroxide 40-50 g / L; potassium hydroxide 110-120 g / L; tetrasodium hydroxyethylidene diphosphonate 25-30 g / L; citric acid 10-20 g / L; sodium hypotriacetate 60-80 g / L; ethylene glycol 5-10 g / L; alkyl glycoside 10-15 g / L; isotridecyl alcohol polyoxyethylene ether 5-8 g / L; sodium citrate 3-5 g / L; balance: water.

[0013] Preferably, the aforementioned wash composition, wherein each liter of wash composition contains the following components:

[0014] Sodium hydroxide 30 g / L; potassium hydroxide 110 g / L; tetrasodium hydroxyethylidene diphosphonate 10 g / L; citric acid 10 g / L; sodium hypotriacetate 50 g / L; ethylene glycol 5 g / L; alkyl glycoside 5 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 3 g / L; balance water.

[0015] Preferably, the aforementioned wash composition, wherein each liter of wash composition contains the following components:

[0016] Sodium hydroxide 30 g / L; potassium hydroxide 110 g / L; tetrasodium hydroxyethylidene diphosphonate 10 g / L; citric acid 10 g / L; sodium hypotriacetate 50 g / L; ethylene glycol 5 g / L; alkyl glycoside 5 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 3 g / L; balance water.

[0017] Preferably, the aforementioned wash composition, wherein each liter of wash composition contains the following components:

[0018] Sodium hydroxide 40 g / L; potassium hydroxide 130 g / L; tetrasodium hydroxyethylidene diphosphonate 20 g / L; citric acid 20 g / L; sodium hypotriacetate 60 g / L; ethylene glycol 10 g / L; alkyl glycoside 10 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 5 g / L; balance water.

[0019] The objective of this invention and the technical problem it solves are achieved through the following technical solution. This invention provides a method for preparing a washing composition, comprising the following steps:

[0020] Sodium hydroxide, potassium hydroxide, tetrasodium hydroxyethylidene diphosphonate, citric acid, sodium hypotriacetate, ethylene glycol, alkyl glycoside, isotridecyl alcohol polyoxyethylene ether, and sodium citrate are added sequentially to water and stirred until fully dissolved to obtain the wash composition.

[0021] The objectives of this invention and the technical problems it solves can also be achieved using the following technical measures: The application of a washing and cleaning composition proposed in this invention in automotive cover plate coating.

[0022] The objectives of this invention and the technical problems it solves can also be achieved using the following technical measures. The application of a washing and cleaning composition proposed in this invention in mobile phone coating.

[0023] Compared with the prior art, the wash-off composition, its preparation method, and its application described in this invention have the following beneficial effects:

[0024] The stripping composition of this invention solves the problem that existing stripping solutions corrode the ink layer on the glass surface after stripping, easily damaging the glass surface and causing scratches. This invention only targets the film layer on the product for stripping, without causing damage to the glass or corrosion of the ink.

[0025] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following detailed description, in conjunction with preferred embodiments, provides a detailed explanation of the specific implementation methods, structures, features, and effects of a washing composition, its preparation method, and its application according to the present invention. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable manner.

[0027] Unless otherwise specified, all materials and reagents mentioned below are commercially available products well-known to those skilled in the art; unless otherwise specified, all methods described are methods known in the art. Unless otherwise defined, the technical or scientific terms used should have the ordinary meaning understood by those skilled in the art. Where specific experimental steps or conditions are not specified below, they can be performed according to the conventional experimental steps or conditions described in the literature in this field.

[0028] Some embodiments of the present invention provide a wash composition, each liter of which contains the following components:

[0029] Sodium hydroxide 30-50 g / L; potassium hydroxide 100-150 g / L; tetrasodium hydroxyethylidene diphosphonate 10-30 g / L; citric acid 5-20 g / L; sodium hypotriacetate 50-100 g / L; ethylene glycol 5-20 g / L; potassium hydroxide 10-30 g / L; alkyl glycoside 5-15 g / L; isotridecyl alcohol polyoxyethylene ether 3-8 g / L; sodium citrate 3-5 g / L; balance: water.

[0030] The functions of each component are as follows:

[0031] Sodium hydroxide, as a strong alkaline substance, provides the conditions for saponification reactions, removing animal and vegetable oils and mineral oil stains; it works synergistically with phosphates to maintain the alkaline environment of the solution, enhancing its detergency. At concentrations below 30 g / L, the saponification ability is insufficient, resulting in incomplete oil removal; at concentrations above 50 g / L, the excessive concentration can corrode metal substrates, and the residues are difficult to clean.

[0032] Similar to sodium hydroxide, potassium hydroxide enhances the alkaline environment and improves saponification efficiency. At concentrations below 100 g / L, the saponification capacity is insufficient, resulting in incomplete grease removal; at concentrations above 150 g / L, the excessive concentration exacerbates corrosiveness.

[0033] The function of tetrasodium hydroxyethylidene diphosphonate is to chelate calcium and magnesium ions, soften hard water, and prevent redeposition of scale; it also acts as a corrosion inhibitor to protect metal surfaces. At concentrations below 10 g / L, insufficient chelating capacity leads to scale formation; at concentrations above 30 g / L, excessive amounts may affect the stability of other components.

[0034] Citric acid provides acidic conditions to neutralize alkaline residues; sodium citrate acts as a buffer to stabilize the pH value and prevent excessive fluctuations in the solution. When the citric acid concentration is below 5 g / L or the sodium citrate concentration is below 3 g / L, the citric acid is insufficient, the neutralization effect is poor, and the residual alkali damages the substrate; when the citric acid concentration is above 20 g / L or the sodium citrate concentration is above 5 g / L, the excess may reduce the alkalinity of the solution and weaken the detergency.

[0035] The function of sodium hypotriacetate is to chelate heavy metal ions, preventing oxidation and discoloration of metal surfaces; and to assist in dispersing dirt. At concentrations below 50 g / L, the chelation is too low, easily resulting in discoloration; at concentrations above 100 g / L, excessive amounts may increase solution viscosity and affect cleaning efficiency.

[0036] Ethylene glycol serves to lower the freezing point of the solution and prevent freezing at low temperatures; it also acts as a solvent to enhance the solubility of components. A concentration below 5 g / L is insufficient, resulting in poor antifreeze performance; a concentration above 20 g / L may reduce the surface tension of the solution, affecting the cleaning effect.

[0037] Alkyl glycosides function as nonionic surfactants to emulsify greases, disperse dirt, and reduce surface tension. At concentrations below 5 g / L, insufficient emulsification reduces emulsifying ability; at concentrations above 15 g / L, excessive amounts may lead to excessive foaming and difficulty in rinsing.

[0038] The function of isomeric tridecyl alcohol polyoxyethylene ether is to enhance wettability, aid penetration into the dirt, and improve cleaning efficiency. At concentrations below 3 g / L, insufficient concentration results in poor penetration; at concentrations above 8 g / L, excessive concentrations may increase solution viscosity.

[0039] The role of water is to dilute the components to an effective concentration and provide a reaction medium. Insufficient water will result in an excessively high solution concentration, which may leave residues; excessive water will reduce cleaning efficiency.

[0040] In summary, the proportions of each component must be strictly adjusted according to the formula. If the proportions are lower than the formula, the deplating effect will not be achieved, and if the proportions are higher than the formula, there is a risk of corrosion to the product ink.

[0041] Some embodiments of the present invention also provide a method for preparing a wash-off composition, comprising the following steps:

[0042] Add the prescribed amounts of sodium hydroxide, potassium hydroxide, tetrasodium hydroxyethylidene diphosphonate, citric acid, sodium hypotriacetate, ethylene glycol, potassium hydroxide, alkyl glycoside, isotridecyl alcohol polyoxyethylene ether, and sodium citrate to water, and stir until fully dissolved to obtain the wash composition.

[0043] Some embodiments of the present invention also provide an application of the stripping composition in automotive cover coating.

[0044] Some embodiments of the present invention also provide an application of the wash-off composition in mobile phone coating.

[0045] The present invention will be further described below with reference to specific embodiments.

[0046] Example 1

[0047] This embodiment provides a wash composition, each liter of which contains the following components:

[0048] Sodium hydroxide 30 g / L; potassium hydroxide 110 g / L; tetrasodium hydroxyethylidene diphosphonate 10 g / L; citric acid 10 g / L; sodium hypotriacetate 50 g / L; ethylene glycol 5 g / L; alkyl glycoside 5 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 3 g / L; balance water.

[0049] The method for preparing the above-mentioned wash composition includes the following steps:

[0050] Add 30g sodium hydroxide, 110g potassium hydroxide, 10g tetrasodium hydroxyethylidene diphosphonate, 10g citric acid, 50g sodium hypotriacetate, 5g ethylene glycol, 5g alkyl glycoside, 5g isotridecyl alcohol polyoxyethylene ether, and 3g sodium citrate sequentially to 1L of water and stir until fully dissolved to obtain the wash composition.

[0051] Example 2

[0052] This embodiment provides a wash composition, each liter of which contains the following components:

[0053] Sodium hydroxide 40 g / L; potassium hydroxide 130 g / L; tetrasodium hydroxyethylidene diphosphonate 20 g / L; citric acid 20 g / L; sodium hypotriacetate 60 g / L; ethylene glycol 10 g / L; alkyl glycoside 10 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 5 g / L; balance water.

[0054] The method for preparing the above-mentioned wash composition includes the following steps:

[0055] Add 40g sodium hydroxide, 130g potassium hydroxide, 20g tetrasodium hydroxyethylidene diphosphonate, 20g citric acid, 60g sodium hypotriacetate, 10g ethylene glycol, 10g alkyl glycoside, 5g isotridecyl alcohol polyoxyethylene ether, and 5g sodium citrate sequentially to 1L of water and stir until fully dissolved to obtain the wash composition.

[0056] Example 3

[0057] This embodiment provides a wash composition, each liter of which contains the following components:

[0058] Sodium hydroxide 50 g / L; potassium hydroxide 130 g / L; tetrasodium hydroxyethylidene diphosphonate 25 g / L; citric acid 20 g / L; sodium hypotriacetate 60 g / L; ethylene glycol 10 g / L; alkyl glycoside 15 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 5 g / L; balance water.

[0059] The method for preparing the above-mentioned wash composition includes the following steps:

[0060] Add 50g sodium hydroxide, 130g potassium hydroxide, 25g tetrasodium hydroxyethylidene diphosphonate, 20g citric acid, 60g sodium hypotriacetate, 10g ethylene glycol, 15g alkyl glycoside, 5g isotridecyl alcohol polyoxyethylene ether, and 5g sodium citrate sequentially to 1L of water and stir until fully dissolved to obtain the wash composition.

[0061] Example 4

[0062] This embodiment provides a wash composition, each liter of which contains the following components:

[0063] Sodium hydroxide 40 g / L; potassium hydroxide 140 g / L; tetrasodium hydroxyethylidene diphosphonate 20 g / L; citric acid 20 g / L; sodium hypotriacetate 80 g / L; ethylene glycol 10 g / L; alkyl glycoside 10 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 5 g / L; balance water.

[0064] The method for preparing the above-mentioned wash composition includes the following steps:

[0065] Add 40g sodium hydroxide, 140g potassium hydroxide, 20g tetrasodium hydroxyethylidene diphosphonate, 20g citric acid, 80g sodium hypotriacetate, 10g ethylene glycol, 10g alkyl glycoside, 5g isotridecyl alcohol polyoxyethylene ether, and 5g sodium citrate sequentially to 1L of water and stir until fully dissolved to obtain the wash composition.

[0066] Example 5

[0067] This embodiment provides a wash composition, each liter of which contains the following components:

[0068] Sodium hydroxide 50 g / L; potassium hydroxide 140 g / L; tetrasodium hydroxyethylidene diphosphonate 20 g / L; citric acid 20 g / L; sodium hypotriacetate 80 g / L; ethylene glycol 10 g / L; alkyl glycoside 10 g / L; isotridecyl alcohol polyoxyethylene ether 8 g / L; sodium citrate 5 g / L; balance water.

[0069] The method for preparing the above-mentioned wash composition includes the following steps:

[0070] Add 50g sodium hydroxide, 140g potassium hydroxide, 20g tetrasodium hydroxyethylidene diphosphonate, 20g citric acid, 80g sodium hypotriacetate, 10g ethylene glycol, 10g alkyl glycoside, 8g isotridecyl alcohol polyoxyethylene ether, and 5g sodium citrate sequentially to 1L of water and stir until fully dissolved to obtain the wash composition.

[0071] The formulations of the wash-off compositions described in Examples 1-5 are summarized in Table 1 below.

[0072] Table 1

[0073]

[0074]

[0075] The concentrations of the stripping compositions from Examples 1-5 were each diluted with water to 20 wt% and added to the first ultrasonic bath. Then, the concentrations of the stripping compositions from Examples 1-5 were each diluted with water to 5 wt% and added to the second ultrasonic bath. Ten glass holders with defective coatings were immersed in the first ultrasonic bath at 70°C for 180 seconds. These glass holders were then removed and immersed in the second ultrasonic bath at 65°C for 180 seconds. Next, they were immersed in the third ultrasonic bath containing 65°C pure water for 180 seconds. Following this, they were sprayed with pure water in a spray tank for 180 seconds, rinsed with pure water for 180 seconds, and finally dried at 120°C for 180 seconds. The defect numbers from Examples 1-5 were obtained by testing with an ultrasonic cleaning machine, as shown in Table 1. As can be seen from the data in Table 1, the number of defects in Examples 1-5 of Examples 1-5 is 1-3, and the number of defects in Example 3 is the lowest. This indicates that the 25g tetrasodium hydroxyethylidene diphosphonate prepared according to the ratio of the present invention has a better effect.

[0076] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Simple technical variations within the scope of the inventive concept should be considered as covered by the disclosure of this invention and are all within the protection scope of this invention.

[0077] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some embodiments, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0078] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0079] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A wash-off composition, characterized in that, Each liter of the wash composition contains the following components: Sodium hydroxide 30-50 g / L; potassium hydroxide 100-150 g / L; tetrasodium hydroxyethylidene diphosphonate 10-30 g / L; citric acid 5-20 g / L; sodium hypotriacetate 50-100 g / L; ethylene glycol 5-20 g / L; alkyl glycoside 5-15 g / L; isotridecyl alcohol polyoxyethylene ether 3-8 g / L; sodium citrate 3-5 g / L; balance: water.

2. The wash-off composition according to claim 1, characterized in that, The wash composition per liter contains the following components: Sodium hydroxide 40-50 g / L; potassium hydroxide 110-150 g / L; tetrasodium hydroxyethylidene diphosphonate 20-30 g / L; citric acid 5-20 g / L; sodium hypotriacetate 50-100 g / L; ethylene glycol 5-10 g / L; alkyl glycoside 5-10 g / L; isotridecyl alcohol polyoxyethylene ether 5-8 g / L; sodium citrate 3-5 g / L; balance: water.

3. The wash-off composition according to claim 1, characterized in that, The wash composition per liter contains the following components: Sodium hydroxide 40-50 g / L; potassium hydroxide 110-150 g / L; tetrasodium hydroxyethylidene diphosphonate 20-30 g / L; citric acid 5-20 g / L; sodium hypotriacetate 60-100 g / L; ethylene glycol 5-10 g / L; alkyl glycoside 10-15 g / L; isotridecyl alcohol polyoxyethylene ether 5-8 g / L; sodium citrate 3-5 g / L; balance: water.

4. The wash-off composition according to claim 1, characterized in that, The wash composition per liter contains the following components: Sodium hydroxide 40-50 g / L; potassium hydroxide 110-120 g / L; tetrasodium hydroxyethylidene diphosphonate 25-30 g / L; citric acid 10-20 g / L; sodium hypotriacetate 60-80 g / L; ethylene glycol 5-10 g / L; alkyl glycoside 10-15 g / L; isotridecyl alcohol polyoxyethylene ether 5-8 g / L; sodium citrate 3-5 g / L; balance: water.

5. The wash-off composition as claimed in claim 1, characterized in that, Each liter of the wash composition contains the following components: Sodium hydroxide 30 g / L; potassium hydroxide 110 g / L; tetrasodium hydroxyethylidene diphosphonate 10 g / L; citric acid 10 g / L; sodium hypotriacetate 50 g / L; ethylene glycol 5 g / L; alkyl glycoside 5 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 3 g / L; balance water.

6. The wash-off composition according to claim 1, characterized in that, Each liter of the wash composition contains the following components: Sodium hydroxide 40 g / L; potassium hydroxide 130 g / L; tetrasodium hydroxyethylidene diphosphonate 20 g / L; citric acid 20 g / L; sodium hypotriacetate 60 g / L; ethylene glycol 10 g / L; alkyl glycoside 10 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 5 g / L; balance water.

7. The wash-off composition according to claim 1, characterized in that, Each liter of the wash composition contains the following components: Sodium hydroxide 50 g / L; potassium hydroxide 130 g / L; tetrasodium hydroxyethylidene diphosphonate 25 g / L; citric acid 20 g / L; sodium hypotriacetate 60 g / L; ethylene glycol 10 g / L; alkyl glycoside 15 g / L; isotridecyl alcohol polyoxyethylene ether 5 g / L; sodium citrate 5 g / L; balance water.

8. A method for preparing the wash-off composition according to any one of claims 1-7, characterized in that, Includes the following steps: Sodium hydroxide, potassium hydroxide, tetrasodium hydroxyethylidene diphosphonate, citric acid, sodium hypotriacetate, ethylene glycol, alkyl glycoside, isotridecyl alcohol polyoxyethylene ether, and sodium citrate are added sequentially to water and stirred until fully dissolved to obtain the wash composition.

9. The use of the stripping composition according to any one of claims 1-7 in automotive cover coating.

10. The use of the wash-off composition according to any one of claims 1-7 in mobile phone coating.

Images