Non-toxic environment-friendly detergent and preparation method thereof

Abstract

The invention relates to a non-toxic environment-friendly detergent which is prepared from the following components in percentage by mass: 0.1% of disodium ethylene diamine tetraacetate, 10% of alkyl glycoside (APG1214), 8% of lauramidopropyl amine oxide (LAO-30), 6% of cocoanut fatty acid diethanolamide (1: 1.5), 10% of cocamidopropyl betaine, 25% of high-concentration cocamidopropyl betaine, 0.1% of preservative, 0.06% of edible essence and the balance of deionized water. The detergent without containing the anionic surfactant does not contain the anionic surfactant; the skin is not hurt; compared with the existing detergent containing 15 active matters and an anionic surfactant in the market, the detergent has the advantages that the stain stripping capacity is almost the same, but the oil emulsifying capacity is more than twice higher than that of the detergent containing 15 active matters and an anionic surfactant; due to the excellent oil emulsifying capacity, oil residues in the oil separation tank can be correspondingly reduced.

Description

Technical Field

[0001] This invention relates to the field of dishwashing liquid technology, specifically to a non-toxic and environmentally friendly dishwashing liquid and its preparation method. Background Technology

[0002] As a daily cleaning product for tableware, dishwashing liquid's core function is to effectively remove grease and prevent secondary pollution. Traditional products generally use anionic surfactants such as sodium fatty alcohol polyoxyethylene ether sulfate (AES) and sodium linear alkylbenzene sulfonate (LAS) to achieve strong detergency. However, these ingredients can irritate the skin and have a long degradation period in the natural environment, potentially exacerbating the accumulation of grease in grease traps with long-term use. As consumers increasingly demand higher safety and environmental performance from daily chemical products, dishwashing liquids without anionic surfactants are gradually becoming a focus of industry research and development due to their gentle, low-irritant, and environmentally friendly properties.

[0003] Currently available anionic dishwashing liquids, while reducing the risk of skin irritation to some extent, have limited effectiveness in emulsifying grease: some products only achieve the emulsification level of 2-3 active ingredients found in anionic formulations; others, while possessing some grease-removing ability, lack sustained emulsification, leading to easy re-adhesion of floating grease onto dishes after washing. Furthermore, existing anionic formulations generally suffer from high costs and unsatisfactory emulsification efficiency, failing to effectively match the overall cleaning performance of traditional anionic products. Therefore, there is an urgent need to develop a non-toxic, environmentally friendly dishwashing liquid and its preparation method. Summary of the Invention

[0004] The purpose of this invention is to provide a non-toxic and environmentally friendly detergent and its preparation method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a non-toxic and environmentally friendly dishwashing liquid, composed of the following components by mass percentage: 0.1% disodium ethylenediaminetetraacetate, 10% alkyl glycoside (APG1214), 8% lauramide propylamine oxide (LAO-30), 6% coconut oil fatty acid diethanolamide (1:1.5), 10% cocamidopropyl betaine, 25% high-concentration cocamidopropyl betaine, 0.1% preservative, 0.06% edible flavor, and the balance being deionized water.

[0006] Preferably, the alkyl glycoside (APG1214) has a carbon chain length distribution of C12-C14, a hydroxyl value of 110–130 mg KOH / g, and a pH value of 5.0–7.0 for a 10% aqueous solution.

[0007] Preferably, the laurylamidopropylamine oxide (LAO-30) is a 30% aqueous solution of active ingredient, and the amine oxide content is not less than 98%.

[0008] Preferably, the coconut oil fatty acid diethanolamide (1:1.5) is a composite amide with a molar ratio of monoethanolamine to diethanolamine of 1:1.5, and the free fatty acid content does not exceed 2%.

[0009] Preferably, the cocamidopropyl betaine is a 30% aqueous solution of the active ingredient, and the sodium chloride content does not exceed 3%.

[0010] Preferably, the high-concentration cocamidopropyl betaine has an active ingredient content of 35% to 38%, and its preparation method includes: subjecting coconut oil fatty acids to an amidation reaction with N-dimethyl-1,3-propanediamine at 120-130°C for 2-3 hours, then introducing ethylene oxide for quaternization, cooling to below 40°C after the reaction, diluting with water to an active ingredient content of 35-38%, and filtering to obtain the product.

[0011] Preferably, the preservative is sodium benzoate or methylisothiazolinone, which is diluted with 5 times its mass of deionized water before addition.

[0012] Preferably, the edible flavoring is a lemon-type or orange blossom-type daily chemical grade flavoring with a flash point higher than 60°C.

[0013] A method for preparing a non-toxic, environmentally friendly dishwashing liquid includes the following steps:

[0014] S1: Add 60% of the total formula amount of deionized water to the mixing tank, turn on the mixer, and set the speed to 20–40 rpm;

[0015] S2: Add disodium ethylenediaminetetraacetate and stir for 10 minutes until completely dissolved;

[0016] S3: Add alkyl glycoside (APG1214), lauramide propylamine oxide (LAO-30), and coconut oil fatty acid diethanolamide (1:1.5) in sequence, with an interval of no less than 2 minutes between each ingredient. After all ingredients are added, continue stirring for 20 minutes.

[0017] S4: Add pre-diluted preservatives and flavorings, and stir for 10 minutes;

[0018] S5: Add high concentration of cocamidopropyl betaine and stir for 10 minutes;

[0019] S6: Add deionized water to 100% of the total formula volume, stir again and adjust the pH to 8.0±0.2;

[0020] S7: After standing for 15 minutes, take a sample for testing. If it passes the test, transfer it to the finished product storage tank.

[0021] Compared with the prior art, the beneficial effects of the present invention are: this non-toxic and environmentally friendly detergent:

[0022] 1. Contains no anionic surfactants.

[0023] 2. Gentle and does not harm the skin.

[0024] 3. Superior oil emulsification ability: Compared to existing detergents on the market containing 15 active ingredients and anionic surfactants, its stain removal ability is about the same, but its oil emulsification ability is more than twice as high.

[0025] 4. Due to its excellent oil emulsification ability, the amount of oil residue in the oil separator will also be reduced accordingly. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the process flow of the present invention. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 This invention provides a technical solution: a non-toxic and environmentally friendly dishwashing liquid, composed of the following components by mass percentage: 0.1% disodium ethylenediaminetetraacetate, 10% alkyl glycoside (APG1214), 8% lauramide propylamine oxide (LAO-30), 6% coconut oil fatty acid diethanolamide (1:1.5), 10% cocamidopropyl betaine, 25% high-concentration cocamidopropyl betaine, 0.1% preservative, 0.06% food flavoring, and the balance being deionized water.

[0029] Furthermore, the alkyl glycoside (APG1214) has a carbon chain length distribution of C12-C14, a hydroxyl value of 110–130 mgKOH / g, and a pH value of 5.0–7.0 for a 10% aqueous solution.

[0030] Furthermore, the lauramide propylamine oxide (LAO-30) is a 30% aqueous solution of active ingredient, with an amine oxide content of not less than 98%.

[0031] Furthermore, the coconut oil fatty acid diethanolamide (1:1.5) is a composite amide with a molar ratio of monoethanolamine to diethanolamine of 1:1.5, and the free fatty acid content does not exceed 2%.

[0032] Furthermore, the cocamidopropyl betaine is a 30% aqueous solution of the active ingredient, and the sodium chloride content does not exceed 3%.

[0033] Furthermore, the high-concentration cocamidopropyl betaine has an active ingredient content of 35% to 38%, and its preparation method includes: subjecting coconut oil fatty acids to an amidation reaction with N-dimethyl-1,3-propanediamine at 120-130°C for 2-3 hours, then introducing ethylene oxide for quaternization, cooling to below 40°C after the reaction, diluting with water to an active ingredient content of 35-38%, and filtering to obtain the product.

[0034] The role of cocamidopropyl betaine in formulation: antibacterial, foam stabilizing, and foam enhancing; when used in conjunction with alkyl glycosides and coconut oil fatty acid diethanolamide, it can significantly enhance the surface activity of alkyl glycosides and coconut oil fatty acid diethanolamide.

[0035] Furthermore, the preservative is sodium benzoate or methylisothiazolinone, which is diluted with 5 times its mass of deionized water before addition.

[0036] Furthermore, the edible flavoring is a lemon-type or orange blossom-type daily chemical grade flavoring with a flash point higher than 60°C.

[0037] A method for preparing a non-toxic, environmentally friendly dishwashing liquid includes the following steps:

[0038] S1: Add 60% of the total formula amount of deionized water to the mixing tank, turn on the mixer, and set the speed to 20–40 rpm;

[0039] S2: Add disodium ethylenediaminetetraacetate and stir for 10 minutes until completely dissolved;

[0040] S3: Add alkyl glycoside (APG1214), lauramide propylamine oxide (LAO-30), and coconut oil fatty acid diethanolamide (1:1.5) in sequence, with an interval of no less than 2 minutes between each ingredient. After all ingredients are added, continue stirring for 20 minutes.

[0041] S4: Add pre-diluted preservatives and flavorings, and stir for 10 minutes;

[0042] S5: Add high concentration of cocamidopropyl betaine and stir for 10 minutes;

[0043] S6: Add deionized water to 100% of the total formula volume, stir again and adjust the pH to 8.0±0.2;

[0044] During the stirring process, test whether the pH value reaches the specified requirement. If the pH value is lower than the specified value, add a certain amount of sodium citrate; if the pH value is higher than the specified value, add a certain amount of citric acid.

[0045] S7: After standing for 15 minutes, take a sample for testing. If it passes the test, transfer it to the finished product storage tank.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-toxic, environmentally friendly dishwashing liquid, characterized in that, It is composed of the following components by mass percentage: 0.1% disodium ethylenediaminetetraacetate, 10% alkyl glycoside (APG1214), 8% lauramide propylamine oxide (LAO-30), 6% coconut oil fatty acid diethanolamide (1:1.5), 10% cocamidopropyl betaine, 25% high-concentration cocamidopropyl betaine, 0.1% preservative, 0.06% food flavoring, and the balance being deionized water.

2. The non-toxic, environmentally friendly detergent according to claim 1, characterized in that, The alkyl glycoside (APG1214) has a carbon chain length distribution of C12-C14, a hydroxyl value of 110–130 mgKOH / g, and a pH value of 5.0–7.0 for a 10% aqueous solution.

3. The non-toxic, environmentally friendly detergent according to claim 1, characterized in that, The laurylamidopropylamine oxide (LAO-30) is a 30% aqueous solution of active ingredient, with an amine oxide content of not less than 98%.

4. The non-toxic, environmentally friendly detergent according to claim 1, characterized in that, The coconut oil fatty acid diethanolamide (1:1.5) is a composite amide with a molar ratio of monoethanolamine to diethanolamine of 1:1.5, and the free fatty acid content does not exceed 2%.

5. The non-toxic, environmentally friendly dishwashing liquid according to claim 1, characterized in that, The cocamidopropyl betaine is a 30% aqueous solution of the active ingredient, and the sodium chloride content does not exceed 3%.

6. The non-toxic, environmentally friendly dishwashing liquid according to claim 1, characterized in that, The high-concentration cocamidopropyl betaine has an active ingredient content of 35% to 38%, and its preparation method includes: subjecting coconut oil fatty acids to an amidation reaction with N-dimethyl-1,3-propanediamine at 120-130°C for 2-3 hours, then introducing ethylene oxide for quaternization, cooling to below 40°C after the reaction, diluting with water to an active ingredient content of 35-38%, and filtering to obtain the product.

7. The non-toxic, environmentally friendly dishwashing liquid according to claim 1, characterized in that, The preservative is sodium benzoate or methylisothiazolinone, which is diluted with 5 times its mass of deionized water before addition.

8. The non-toxic, environmentally friendly detergent according to claim 1, characterized in that, The edible flavoring is a lemon-type or orange blossom-type daily chemical grade flavoring with a flash point higher than 60°C.

9. A method for preparing a non-toxic, environmentally friendly detergent as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1: Add 60% of the total formula amount of deionized water to the mixing tank, turn on the mixer, and set the speed to 20–40 rpm; S2: Add disodium ethylenediaminetetraacetate and stir for 10 minutes until completely dissolved; S3: Add alkyl glycoside (APG1214), lauramide propylamine oxide (LAO-30), and coconut oil fatty acid diethanolamide (1:1.5) in sequence, with an interval of no less than 2 minutes between each ingredient. After all ingredients are added, continue stirring for 20 minutes. S4: Add pre-diluted preservatives and flavorings, and stir for 10 minutes; S5: Add high concentration of cocamidopropyl betaine and stir for 10 minutes; S6: Add deionized water to 100% of the total formula volume, stir again and adjust the pH to 8.0±0.2; S7: After standing for 15 minutes, take a sample for testing. If it passes the test, transfer it to the finished product storage tank.

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