Production method of double concentrated laundry detergent
By distilling surfactant in the production of laundry detergent and adding sodium sulfate, ethylene glycol and other ingredients, the problems of low total active content and poor stability of existing laundry detergent are solved, and a double-concentrated laundry detergent with high active content and good stability are achieved.
Patent Information
- Application Number
- CN202411869905.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-04-04
AI Technical Summary
It is difficult for existing laundry detergent to reach a total active content of more than 35%, and it is difficult for amphoteric surfactant to maintain dissolution performance and storage stability.
By using the dual-concentrated laundry detergent production method, the pH is adjusted to 6.5-7.0 by distilling imidazoline, alkyldimethylbetaine, ET200 and alkyl glycosides to a content of about 70%, and adding sodium sulfate and ethylene glycol to adjust the pH to 6.5-7.0, reaching a total active content of more than 50%.
The total active content has been increased to more than 50%, the laundry detergent is clear and transparent, the heat and cold resistance is good, and the cleaning ability is strong.
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Abstract
Description
Technical Field
[0001] The invention relates to the technical field of laundry detergents, and in particular to a production method of double-concentrated laundry detergent. Background Art
[0002] Laundry detergent is a liquid cleaning product with a certain decontamination ability, which is prepared by adding active substances such as surfactants to water as a matrix. It is divided into ordinary laundry detergent and concentrated laundry detergent, and is generally used to wash various textiles, knitwear, etc. At present, the most widely used are anionic surfactants such as fatty alcohol polyoxyethylene ether sulfate sodium and sodium dodecyl sulfate. The active content of fatty alcohol polyoxyethylene ether sulfate sodium is as high as 70% or more, but it cannot be used as the main ingredient, because even if it is diluted to a liquid state, it will form a gel when it encounters cold water and is difficult to dissolve. Therefore, the total active content is difficult to reach 50%, and can only reach about 35%. In addition, the active matter content of amphoteric surfactants is generally low, only 30%-50%, and it is believed that it is difficult for amphoteric surfactants and other surfactants to maintain solubility and storage stability when compounding laundry detergents, and generally cannot be used to prepare highly concentrated laundry detergents. Summary of the invention
[0003] The invention aims to provide a method for producing double-concentrated laundry detergent, wherein the total active matter content can be as high as 50% or more, and the system is clear and transparent and has good cold and heat resistance and stability.
[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: The production method of double concentrated laundry detergent specifically comprises the following steps: S1. Add imidazoline, alkyl dimethyl betaine, ET200 and alkyl glucoside in a proportion into a stirring barrel and heat to 90°C-95°C, then stir and distill until the active matter content is 70±5%, stop heating and stirring, and obtain a surfactant mixture; S2. Add the distilled surfactant mixture and the water-dissolved sodium sulfate into the synthesis barrel according to the proportion and stir evenly; S3, adding a nonionic surfactant into the synthesis barrel and stirring evenly; S4, adding a deodorizing agent into the synthesis barrel and stirring evenly; S5, adding the antiseptic and fungicide into the synthesis barrel and stirring evenly; S6, adding ethylene glycol into the synthesis barrel and stirring evenly; S7, adding the remaining water into the synthesis barrel and stirring evenly, and then adjusting the pH to 6.5-7.0 with citric acid solution, and the active matter content reaches more than 50%; The mass percentages of the raw material components in the synthesis barrel are: 70%-85% surfactant mixture, 0.5%-1.5% sodium sulfate, 1.0%-2.5% non-ionic surfactant, 0.1%-0.3% deodorant, 0.1%-0.2% preservative and bactericidal agent, 4.0%-6.0% ethylene glycol, and the balance is water.
[0005] Preferably, the mixing barrel in step S1 is made of stainless steel and is provided with a barrel wall scraper.
[0006] Preferably, the stirring speed in step S1 is 6-8 revolutions per minute.
[0007] Preferably, the stirring speed in steps S2-S7 is 10-12 revolutions per minute.
[0008] Preferably, the nonionic surfactant in step S3 is alkylphenol polyoxyethylene ether.
[0009] Preferably, the deodorizing agent in step S4 is essence.
[0010] Preferably, the preservative and bactericidal agent in step S5 is Kathon.
[0011] Preferably, the method for determining the active ingredient content in steps S1 and S7 adopts method A of Chapter VII of GB / T 13173-2008.
[0012] Preferably, the mass ratio of imidazoline, alkyl dimethyl betaine, ET200 and alkyl glycoside in step S1 is 35-40:10-15:30-35:25-30. The alkyl glycoside is preferably C8-C14 alkyl glycoside.
[0013] Preferably, the mass percentage of each raw material component in the synthesis barrel is: 72%-75% surfactant mixture, 0.5%-1.0% sodium sulfate, 1.0%-1.5% non-ionic surfactant, 0.1%-0.2% deodorant, 0.1%-0.15% preservative and bactericidal agent, 4.0%-5.0% ethylene glycol, and the balance is water. Beneficial Effects
[0014] The present invention changes the traditional understanding and innovatively proposes to distill the amphoteric surfactant, and simultaneously add sodium sulfate and ethylene glycol, so as to achieve a highly concentrated laundry detergent, the total active matter content far exceeds the 25% standard of general concentrated laundry detergent and reaches more than 50%, the cleaning ability is strong, and the concentrated laundry detergent is clear and transparent, and has good heat and cold resistance and stability. Among them: sodium sulfate in the formula mainly plays a role in synergistically reducing the viscosity of the system with alkyl polyglycoside, and ethylene glycol improves the stability of the system and maintains the viscosity reduction effect of sodium sulfate without precipitation failure. DETAILED DESCRIPTION Example 1
[0015] This embodiment provides a method for producing double-concentrated laundry detergent, which specifically includes the following steps: S1. Add imidazoline ML, dodecyl dimethyl betaine, ET200 and C12 alkyl glycoside in proportion into a 316 stainless steel stirring barrel and heat to 95°C in water, then start stirring at a speed of 8 revolutions per minute. During the stirring process, scrape the barrel wall with a barrel scraper, distill until the active matter content is 70% as determined by method A in Chapter VII of GB / T 13173-2008, stop heating and stirring, and obtain a surfactant mixture; the mass ratio of imidazoline ML, dodecyl dimethyl betaine, ET200 and alkyl glycoside is 35:15:30:25.
[0016] Next, the surfactant mixture after distillation is stirred and mixed with sodium sulfate, dodecylphenol polyoxyethylene ether, flavor, preservative, ethylene glycol and water in a synthesis barrel. The mass percentage of each raw material component in the synthesis barrel is: 75% surfactant mixture, 1.0% sodium sulfate, 1.0% non-ionic surfactant, 0.15% flavor, 0.1% preservative, 5% ethylene glycol, and the balance is water. The specific operation process is as follows.
[0017] S2. Add the distilled surfactant mixture and the water-dissolved sodium sulfate into the synthesis barrel according to the proportion, stir evenly, and the stirring speed is 12 revolutions per minute.
[0018] S3, adding dodecylphenol polyoxyethylene ether into the synthesis barrel and stirring evenly at a stirring speed of 12 revolutions per minute.
[0019] S4. Add essence into the synthesis barrel and stir evenly at a stirring speed of 12 revolutions per minute.
[0020] S5, adding Kason into the synthesis barrel and stirring evenly at a stirring speed of 12 revolutions per minute.
[0021] S6. Add ethylene glycol into the synthesis barrel and stir evenly at a stirring speed of 12 revolutions per minute.
[0022] S7. Add the remaining water into the synthesis barrel and stir evenly at a stirring speed of 12 revolutions per minute, and then adjust the pH to 7.0 with citric acid solution. Example 2
[0023] This embodiment provides a method for producing double-concentrated laundry detergent, which specifically includes the following steps: S1. Add imidazoline ML, dodecyl dimethyl betaine, ET200 and C12 alkyl glycoside in proportion into a 316 stainless steel stirring barrel and heat to 95°C in water, then start stirring at a speed of 6 revolutions per minute. During the stirring process, scrape the barrel wall with a barrel scraper, distill until the active matter content is 72% as determined by method A in Chapter VII of GB / T 13173-2008, stop heating and stirring, and obtain a surfactant mixture; the mass ratio of imidazoline ML, dodecyl dimethyl betaine, ET200 and alkyl glycoside is 40:10:30:30.
[0024] Next, the surfactant mixture after distillation is stirred and mixed with sodium sulfate, dodecylphenol polyoxyethylene ether, flavor, preservative, ethylene glycol and water in a synthesis barrel. The mass percentage of each raw material component in the synthesis barrel is: 72% surfactant mixture, 0.8% sodium sulfate, 1.5% non-ionic surfactant, 0.1% flavor, 0.15% preservative, 4.0% ethylene glycol, and the balance is water. The specific operation process is as follows.
[0025] S2. Add the distilled surfactant mixture and the water-dissolved sodium sulfate into the synthesis barrel according to the proportion, stir evenly at a stirring speed of 10 revolutions per minute.
[0026] S3, adding dodecylphenol polyoxyethylene ether into the synthesis barrel and stirring evenly at a stirring speed of 10 revolutions per minute.
[0027] S4. Add essence into the synthesis barrel and stir evenly at a stirring speed of 10 revolutions per minute.
[0028] S5, adding Kason into the synthesis barrel and stirring evenly at a stirring speed of 10 revolutions per minute.
[0029] S6. Add ethylene glycol into the synthesis barrel and stir evenly at a stirring speed of 10 revolutions per minute.
[0030] S7. Add the remaining water into the synthesis barrel and stir evenly at a stirring speed of 10 revolutions per minute, and then adjust the pH to 6.8 with citric acid solution.
[0031] Comparative Example 1 This comparative example differs from the above-described Example 1 only in the absence of sodium sulfate.
[0032] Comparative Example 2 The difference between this comparative example and the above-mentioned Example 1 is only that ethanol is used instead of ethylene glycol.
[0033] The laundry detergents prepared in Examples 1 and 2 were respectively tested for physical properties. The test results are shown in Table 1.
[0034] Table 1: Physical property test results of laundry detergents of Examples 1-2 of the present invention and Comparative Examples 1 and 2
[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.
Claims
1. A method for producing a double-concentrated laundry detergent, characterized in that: The specific steps include: S1. Add imidazoline, alkyl dimethyl betaine, ET200 and alkyl glucoside in a proportion into a stirring barrel and heat to 90°C-95°C, then stir and distill until the active matter content is 70±5%, stop heating and stirring, and obtain a surfactant mixture; S2. Add the distilled surfactant mixture and the water-dissolved sodium sulfate into the synthesis barrel according to the proportion and stir evenly; S3, adding a nonionic surfactant into the synthesis barrel and stirring evenly; S4, adding a deodorizing agent into the synthesis barrel and stirring evenly; S5, adding the antiseptic and fungicide into the synthesis barrel and stirring evenly; S6, adding ethylene glycol into the synthesis barrel and stirring evenly; S7, adding the remaining water into the synthesis barrel and stirring evenly, and then adjusting the pH to 6.5-7.0 with citric acid solution, and the active matter content reaches more than 50%; The mass percentages of the raw material components in the synthesis barrel are: 70%-85% surfactant mixture, 0.5%-1.5% sodium sulfate, 1.0%-2.5% non-ionic surfactant, 0.1%-0.3% deodorant, 0.1%-0.2% preservative and bactericidal agent, 4.0%-6.0% ethylene glycol, and the balance is water.
2. The method for producing double-concentrated laundry detergent according to claim 1, characterized in that: The mixing barrel in step S1 is made of stainless steel and is provided with a barrel wall scraper.
3. The method for producing double-concentrated laundry detergent according to claim 1, characterized in that: The stirring speed of step S1 is 6-8 revolutions per minute.
4. The method for producing double-concentrated laundry detergent according to claim 1, characterized in that: The stirring speed in steps S2-S7 is 10-12 revolutions per minute.
5. The method for producing double-concentrated laundry detergent according to claim 1, characterized in that: The nonionic surfactant in step S3 is alkylphenol polyoxyethylene ether.
6. The method for producing double-concentrated laundry detergent according to claim 1, characterized in that: The deodorizing agent in step S4 is essence.
7. The method for producing double-concentrated laundry detergent according to claim 1, characterized in that: The antiseptic and bactericidal agent in step S5 is Kathon.
8. The method for producing double-concentrated laundry detergent according to claim 1, characterized in that: The method for determining the active ingredient content in steps S1 and S7 adopts method A of Chapter VII of GB / T 13173-2008.
9. The method for producing double-concentrated laundry detergent according to any one of claims 1 to 8, characterized in that: The mass ratio of imidazoline, alkyl dimethyl betaine, ET200 and alkyl glycoside in step S1 is 35-40:10-15:30-35:25-30.
10. The method for producing double-concentrated laundry detergent according to claim 9, characterized in that: The mass percentages of the raw material components in the synthesis barrel are: 72%-75% surfactant mixture, 0.5%-1.0% sodium sulfate, 1.0%-1.5% non-ionic surfactant, 0.1%-0.2% deodorant, 0.1%-0.15% preservative and bactericidal agent, 4.0%-5.0% ethylene glycol, and the balance is water.