Decontamination synergist as well as preparation method and application thereof

Abstract

The invention relates to a decontamination synergist as well as a preparation method and application thereof, and belongs to the technical field of daily chemicals. The decontamination synergist comprises the following components in percentage by mass: 5-30% of a nonionic surfactant, 1-20% of a cationic polymer, 5-45% of a green chelating agent and the balance of a solvent, the nonionic surfactant is isomeric alcohol polyoxyethylene ether, the cationic polymer is a cationic polyester polyether block copolymer, the green chelating agent is an amino acid derivative, and the solvent is an alcohol solvent. According to the decontamination synergist, the decontamination synergistic principle is deeply excavated, different substances are compounded in multiple dimensions to achieve synergistic interaction, and the decontamination synergist has excellent permeation assisting, chelating and dispersing effects, has a remarkable decontamination synergistic effect on clothes detergents and the like, can remarkably improve the decontamination effect of the detergents, reduces the use amount of the detergents, meanwhile reduces environmental pollution caused by chemical detergents in wastewater, and has a good application prospect. And the method has high application value in the field of daily chemicals.

Description

Technical Field

[0001] The invention relates to the technical field of daily chemicals, and in particular to a decontamination enhancer and a preparation method and application thereof. Background Art

[0002] Detergents are products designed for the purpose of removing dirt. With the improvement of people's living standards and the changes in living habits in modern society, people's demand for detergents is increasing. However, detergents are mostly synthetic organic compounds. The phosphorus-containing wastewater flowing into rivers, lakes and reservoirs will cause eutrophication of water bodies, seriously affecting water safety and the growth of aquatic plants and animals.

[0003] With the development of the economy, my country has increasingly advocated the need to adhere to green development, accelerate the process of green development, and guide green consumption. At the same time, in recent years, the "development and production of multi-effect, energy-saving, water-saving, and environmentally friendly surfactants, additives, and detergents" have been listed as encouraged projects. How to reduce the amount of detergent while meeting the need for decontamination? Decontamination enhancers have emerged and have become a research hotspot.

[0004] Detergent enhancers are products that can improve the cleaning, decontamination and descaling efficiency of detergents. They play an important role in descaling, purifying water quality, and improving the water environment. At present, detergent enhancers have been used in the industrial field, home life, and environmental protection industry to a certain extent, and their importance is becoming more and more prominent. However, there are a lot of different detergent enhancer products on the market, and some of the products on the market have poor detergent enhancement effects.

[0005] Therefore, developing a new, efficient detergent enhancer product to improve the detergent effect of laundry detergent and other detergents can significantly reduce the amount of detergent used, improve washing efficiency, and reduce the discharge of detergents in wastewater, which has a high application value in the field of daily chemicals. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a decontamination enhancer and its preparation method and application. The decontamination enhancer provided by the present invention has a significant decontamination enhancement effect on detergents by compounding specific components, and the effect is better than commercially available products, and has a high application value in daily chemicals.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] In the first aspect, the present invention provides a detergency enhancer, which comprises the following components, measured in mass percentage: 5-30% non-ionic surfactant, 1-20% cationic polymer, 5-45% green chelating agent and the remainder solvent; the non-ionic surfactant is isomeric alcohol polyoxyethylene ether, the cationic polymer is a cationic polyester polyether block copolymer, the green chelating agent is an amino acid derivative, and the solvent is an alcohol solvent.

[0009] The present invention adopts a specific nonionic surfactant, a cationic polymer, a green chelating agent and a solvent in the above-mentioned combination ratio, which can exert a good synergistic effect and achieve the decontamination and synergistic effect of the detergent.

[0010] Among them, nonionic surfactants have very high surface activity, good solubilization, washing, antistatic, calcium soap dispersion and other properties, low irritation, and excellent wetting and washing functions. Adding a small amount of nonionic surfactants can improve the surface activity of the system and significantly reduce the surface tension of the detergent. In addition, the nonionic surfactants used in the present invention are isomeric alcohol polyoxyethylene ethers of special carbon chains, which have more prominent dispersibility, wettability, and permeability, and have excellent synergistic decontamination ability, especially for carbon black stains, and their combined use effect is significantly better than other nonionic surfactants.

[0011] Cationic polyester polyether block copolymers carry positive charge heads, while some inorganic fine particles on the solid / fabric surface carry negative charge. The electrostatic interaction attracts the negatively charged surfaces to form hydrophobic particles. At the same time, a large number of anionic surfactants in conventional detergents can interact with the hydrophobic bases of the adsorption layer of the cationic polyester polyether block copolymers through hydrophobic groups, adsorb double layers to surround the particles, and thus "hang up" the inorganic fine particles (dirt, stains) remaining or attached to the solid surface or fabric surface, and finally form "soluble particles" and remove them during the washing process. Among all surfactant compounding systems, the anionic-cationic surfactant compounding system has the strongest synergistic effect: due to the strong electrostatic interaction between the ionic head groups with opposite charges, it has a strong synergistic effect and high surface activity. The cationic polyester polyether block copolymer of the present invention is used in detergents to significantly improve the ability of detergents to loosen and disperse stains, and is effective for carbon black stains, protein stains, and sebum stains. And the effect of using it in combination with other components is significantly better than that of conventional cationic polymers.

[0012] The green chelating agent is a substance that is safe for human body and environment, has biodegradability, and has chelating property. Its functions are as follows: (1) for detergents containing fatty acid and soap, it is very easy to form soap scum with calcium and magnesium ions in water during use, which is deposited on the surface of fabrics, resulting in sour smell and reduced wettability. The green chelating agent can effectively solve the soap scum and prevent the redeposition of calcium soap; (2) after the detergent uses a phosphorus-free formula, the film-forming and stain removal performance of the detergent will decrease. The use of the green chelating agent can reduce the film-forming property of the detergent, thereby improving the stain removal performance; (3) The green chelating agent can convert the insoluble compound into a water-soluble substance, and has good solubility for inorganic precipitates. A small amount of the green chelating agent in the detergent can effectively improve the stain removal ability, especially for protein stains. The green chelating agent described in the present invention is an amino acid derivative, which has the characteristics of low toxicity and easy degradation, and meets the use requirements of the green detergent.

[0013] Alcohol solvents can dissolve and disperse the nonionic surfactants, cationic surfactants, and green chelating agents described in the present invention; when used in detergents, they can reduce the formation of micelles between surfactants, indirectly improving the detergent's decontamination ability; at the same time, they have good solubility in oils and fats, have the effect of loosening and dissolving grease stains, assist detergents in exerting decontamination effects, and improve decontamination ability, especially for sebum stains; and, because cationic polymers have the characteristics of easy wrapping, film formation, agglomeration and sedimentation, when the amount is large, it will inhibit other surfactants from exerting decontamination effects, and the dispersibility of the specific solvents of the present invention for cationic polymers helps to alleviate such phenomena. When replaced with other solvents, the decontamination synergistic effect may be significantly deteriorated.

[0014] The decontamination enhancer provided by the present invention has a different decontamination enhancement mechanism from conventional commercially available products. It deeply explores the decontamination enhancement principle and compounds different substances in multiple dimensions. It can assist surfactants in exerting their decontamination performance and has excellent penetration, chelation and dispersion effects, thereby achieving better synergistic effects of various components. It itself has high decontamination power, and adding a small amount of compound conventional detergent can also have an excellent decontamination enhancement effect. It has a high application value in daily chemical products.

[0015] Preferably, the detergency enhancer comprises the following components by mass percentage: 15-30% nonionic surfactant, 5-15% cationic polymer, 15-45% green chelating agent and the balance solvent.

[0016] Preferably, the detergency enhancer comprises the following components by mass percentage: 25-30% nonionic surfactant, 15% cationic polymer, 20-35% green chelating agent and the balance solvent.

[0017] Under the above-mentioned specific ratio, the components of the detergent enhancer of the present invention can exert a good synergistic effect, and can significantly enhance the detergency of the detergent at an extremely low addition concentration, and the effect is significantly better than commercially available detergent enhancers.

[0018] Preferably, the nonionic surfactant is at least one of isomeric tridecanol polyoxyethylene ether, isomeric decanol polyoxyethylene ether and isomeric undecanol polyoxyethylene ether.

[0019] Preferably, the cationic polyester polyether block copolymer conforms to the following structure (I):

[0020]

[0021] In the structure (I), R is CH 3 (CH 2 ) 11 - or CH 3 (CH 2 ) 17 -, 95≤n+m≤318.

[0022] The cationic polymer of the present invention is a cationic polyester polyether block copolymer, which is derived from the patent CN106380587A, including but not limited to one or more of the cationic polyester polyether block copolymers prepared therein.

[0023] Preferably, the green chelating agent is at least one of methylglycine diacetic acid, methylglycine diacetic acid trisodium, aspartic acid diacetate tetrasodium, glutamate diacetate tetrasodium, iminodisuccinate tetrasodium, iminodisuccinate iron, iminodisuccinate zinc, and sodium polyaspartate.

[0024] Preferably, the solvent is at least one of glycerol, diethylene glycol, propylene glycol, butylene glycol, pentanediol and hexylene glycol.

[0025] In a second aspect, the present invention provides a method for preparing the above-mentioned detergent synergist, comprising the following steps:

[0026] The nonionic surfactant, cationic polymer, green chelating agent and solvent are mixed evenly, heated to 45-75° C., mixed evenly for reaction, and then cooled to less than 45° C. to obtain the decontamination enhancer.

[0027] Preferably, the conditions for the mixing reaction are: stirring speed 100-500 rpm, stirring time 30-90 min.

[0028] In a third aspect, the present invention provides the use of the above-mentioned detergent enhancer in daily chemicals.

[0029] Preferably, in the daily chemical product, the content of the detergent synergist is 0.5-5% by mass.

[0030] The decontamination enhancer provided by the present invention can be compounded with different conventional daily chemical formulas (such as laundry detergent, multi-functional cleaning agent) at a relatively low addition amount to exert a significant decontamination enhancement effect, which can correspondingly reduce the amount of daily chemical detergents used and reduce the pollution of detergents in wastewater.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The decontamination synergist provided by the present invention is different from conventional commercially available decontamination synergists (generally single cationic polymers). It deeply explores the decontamination synergist principle, multi-dimensionally compounding specific substances, and finally achieving synergy under a specific ratio, and has excellent decontamination power and decontamination synergist effect; it has excellent penetration, chelation, and dispersion effects, and can work together with the surfactant in the detergent to exert decontamination performance. Adding a small amount of the decontamination synergist of the present invention to conventional daily chemicals can reduce the amount of detergent used, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a comparison chart of the detergency of Example 3 and a commercial product added to a standard laundry detergent;

[0034] Figure 2 This is a comparison chart of the detergency of samples of Examples 1 and 4 and the comparative sample added to standard laundry detergent;

[0035] Figure 3 This is a comparison chart of the detergency of Example 2 when used in laundry detergent and blank laundry detergent. DETAILED DESCRIPTION

[0036] In order to better illustrate the purpose, technical scheme and advantages of the present invention, the present invention will be further described below in conjunction with specific examples. The test methods used in the following examples are conventional methods unless otherwise specified; the materials and reagents used are reagents and materials that can be obtained from commercial channels unless otherwise specified.

[0037] In the following examples and comparative examples, the preparation methods of the different cationic polyester polyether block copolymers refer to patent CN 106380587A, and the specific corresponding structures are shown in Table 1 below.

[0038] Table 1 Structure of cationic polyester polyether block copolymers in Examples and Comparative Examples

[0039]

[0040] Example 1

[0041] An embodiment of the detergent enhancer of the present invention is composed of the following components by mass percentage: 20% nonionic surfactant, 10% cationic polymer, 20% green chelating agent and the balance solvent.

[0042] The preparation method of the decontamination synergist described in this embodiment is:

[0043] (1) Weigh 20 g of isomeric tridecanol polyoxyethylene ether, 10 g of cationic polyester polyether block copolymer 1, 20 g of trisodium methylglycine diacetate, and 50 g of propylene glycol into a container;

[0044] (2) Raise the temperature to 50° C., stir at a stirring speed of 100 rpm for 30 min, cool to 40° C., and discharge the mixture to obtain the decontamination enhancer, referred to as “Example 1”.

[0045] Example 2

[0046] An embodiment of the detergent enhancer of the present invention is composed of the following components by mass percentage: 25% nonionic surfactant, 15% cationic polymer, 20% green chelating agent and the balance solvent.

[0047] The preparation method of the decontamination synergist described in this embodiment is:

[0048] (1) Weigh 25 g of isomeric decanol polyoxyethylene ether, 15 g of cationic polyester polyether block copolymer 2, 20 g of tetrasodium aspartate diacetate, and 40 g of butanediol into a container;

[0049] (2) Raise the temperature to 55° C., stir at a stirring speed of 200 rpm for 40 min, cool to 30° C., and discharge the mixture to obtain the decontamination enhancer, referred to as “Example 2”.

[0050] Example 3

[0051] An embodiment of the detergent enhancer of the present invention is composed of the following components by mass percentage: 30% nonionic surfactant, 15% cationic polymer, 35% green chelating agent and the balance solvent.

[0052] The preparation method of the decontamination synergist described in this embodiment is:

[0053] (1) Weigh 30 g of isomeric undecyl alcohol polyoxyethylene ether, 15 g of cationic polyester polyether block copolymer 3, 35 g of sodium polyaspartate, and 20 g of hexanediol into a container;

[0054] (2) Raise the temperature to 60° C., stir at a stirring speed of 300 rpm for 50 min, cool to 35° C., and discharge the mixture to obtain the decontamination enhancer, referred to as “Example 3”.

[0055] Example 4

[0056] An embodiment of the detergent enhancer of the present invention is composed of the following components by mass percentage: 5% nonionic surfactant, 20% cationic polymer, 5% green chelating agent and the balance solvent.

[0057] The method for preparing the decontamination synergist of Example 4 is different from that of Example 1 only in that:

[0058] In step (1), 5 g of isomeric tridecanol polyoxyethylene ether, 20 g of cationic polyester polyether block copolymer 1, 5 g of trisodium methylglycine diacetate, and 70 g of propylene glycol were weighed to prepare a detergency enhancer referred to as "Example 4".

[0059] Comparative Example 1

[0060] The only difference between Comparative Example 1 and Example 1 is that an equal amount of water is used to replace the non-ionic surfactant isotridecyl alcohol polyoxyethylene ether to prepare a sample without a non-ionic surfactant, referred to as "Comparative Example 1 sample".

[0061] Comparative Example 2

[0062] The only difference between Comparative Example 2 and Example 1 is that an equal amount of water is used to replace the cationic polyester polyether block copolymer 1 to prepare a sample not containing a cationic polymer, referred to as "Comparative Example 2 sample".

[0063] Comparative Example 3

[0064] The only difference between Comparative Example 3 and Example 1 is that an equal amount of water is used to replace the green chelating agent trisodium methylglycine diacetate to prepare a sample without the green chelating agent, referred to as "Comparative Example 3 sample".

[0065] Comparative Example 4

[0066] The difference between Comparative Example 4 and Example 1 is that an equal amount of water is used to replace the solvent propylene glycol to prepare a sample, referred to as "Comparative Example 4 sample".

[0067] Comparative Example 5

[0068] The difference between Comparative Example 5 and Example 1 is that the dosage is adjusted: the dosage of isotridecanol polyoxyethylene ether is reduced to 4 g, the dosage of cationic polyester polyether block copolymer 1 is reduced to 0.1 g, and the dosage of trisodium methylglycine diacetate is increased to 45.9 g. The prepared sample is referred to as "Comparative Example 5 Sample".

[0069] Comparative Example 6

[0070] The difference between Comparative Example 6 and Example 1 is that the dosage is adjusted: increasing the amount of isotridecyl alcohol polyoxyethylene ether to 32 g, increasing the amount of cationic polyester polyether block copolymer 1 to 22 g, reducing the amount of green chelating agent to 3 g, and adjusting the amount of propylene glycol to 43 g accordingly. The prepared sample is referred to as "Comparative Example 6 Sample" for short.

[0071] Comparative Example 7

[0072] The only difference between Comparative Example 7 and Example 1 is that the nonionic surfactant isotridecanol polyoxyethylene ether is replaced by fatty alcohol polyoxyethylene ether (AEO7), and the prepared sample is referred to as "Comparative Example 7 sample".

[0073] Comparative Example 8

[0074] The only difference between Comparative Example 8 and Example 1 is that the cationic polyester polyether block copolymer 1 is replaced by cationic polyacrylamide, and the prepared sample is referred to as "Comparative Example 8 Sample" for short.

[0075] Effect Example 1

[0076] In order to explore the decontamination ability of the decontamination enhancer provided by the present invention, the samples of Examples 1-4 and two commercially available decontamination agent samples were tested for their decontamination ability, wherein the commercial product 1 was from Degussa of Germany and the commercial product 2 was from Croda of the United Kingdom.

[0077] The detergency test method is as follows:

[0078] a. Purchase standard dirty cloth JB-01, JB-02, JB-03, cut into 6cm*6cm, 6 pieces of each kind of dirty cloth, mark them, and measure the blank whiteness value;

[0079] b. Prepare hard water: weigh 0.167g calcium chloride and 0.2037g magnesium chloride, dissolve in 1L deionized water to obtain hard water;

[0080] c. Washing dirty cloth: weigh 2g of sample, add 1L of hard water, add 3 pieces of three kinds of dirty cloths with whiteness values ​​measured in advance, and wash. During the washing process, use a mixer at a speed of 200r / min to simulate the real washing process, and wash for 20 minutes. (To improve the accuracy of the test results, two groups are tested in parallel)

[0081] d. One rinse: drain the wastewater after washing, add 1L of tap water, and rinse for 30s;

[0082] e. Secondary rinsing: drain the wastewater from the first rinse, add 1L of tap water, and rinse for 15s;

[0083] f. Dehydration: Dehydration is carried out using a drum;

[0084] g. Drying: Dry the dirty cloth in an oven at 50°C for 20 minutes;

[0085] h. Measure the whiteness value.

[0086] i. Characterization of detergency: Calculate the difference in whiteness value of the dirty cloth before and after washing, and the difference in whiteness value of the dirty cloth washed with standard laundry detergent under the same conditions. The ratio of the two values ​​is the detergency.

[0087] The results of the detergency test are shown in Table 2: It can be seen that the detergency enhancer provided by the present invention has high detergency when used alone, and its decontamination effect on the three types of dirt is significantly better than that of commercially available decontamination enhancer products, and its mechanism of action is different from that of commercially available detergents.

[0088] Table 2 Decontamination comparison between the samples of the embodiment and commercial products

[0089]

[0090] Effect Example 2

[0091] In order to further explore the difference between the decontamination enhancing effect of the decontamination enhancing agent provided by the present invention and that of commercially available products, the sample of the embodiment and two commercially available products were added to the standard laundry detergent to test their decontamination ability, and the process was as follows:

[0092] (1) Prepare standard laundry detergent. The formula and preparation method are shown in Table 3:

[0093] Table 3 Standard laundry detergent formula and raw material specifications

[0094]

[0095]

[0096] (2) Samples were added to the standard laundry detergent prepared above, and the added concentration gradient was set to 0.5%, 1%, 2%, and 5% by mass concentration. The detergency test method was the same as that in Effect Example 1.

[0097] The results of the detergency test are shown in Table 4, where the detergency enhancement effect of Example 3 is compared with that of the commercially available product. Figure 1 As shown. It can be seen that the decontamination synergist provided by the present invention, compared with the commercial product, gradually improves with the increase of the added amount, and when the added amount is 2%, the decontamination synergist effect is significantly better than that of the commercial product; while the commercial product has no further synergistic effect when added at 2% and 5%. This may be related to the mechanism of action of the decontamination synergist provided by the present invention.

[0098] Among them, the decontamination enhancing effect of the decontamination enhancing agents provided in Examples 2 and 3 is better than that of the commercial products at all addition concentrations, and the decontamination enhancing effect is greatly improved with the increase of the addition concentration, and the decontamination enhancing effect of the decontamination enhancing agent in Example 3 is the best. The samples in Examples 1 and 4 have no significant difference in the synergistic effect at the addition concentration of 0.5-1% and the commercial products, but their decontamination enhancing effect is also better than that of the commercial products when the concentration is increased to 2-5%.

[0099] Table 4 Comparison of detergency of samples of the embodiment and commercial products added to standard laundry detergent

[0100]

[0101]

[0102] Effect Example 3

[0103] In order to further explore the synergistic effect of the components in the decontamination synergist provided by the present invention, the following experiments were conducted on the samples of Examples 1, 4 and various comparative examples:

[0104] (1) Prepare the same standard laundry detergent as in Example 2;

[0105] (2) The sample was added to the standard laundry detergent prepared above, and the added concentration gradient was set to 1% and 2% by mass concentration. The detergency test method was the same as that of Effect Example 1.

[0106] The results are shown in Table 5 and Figure 2 As shown, we can know:

[0107] Only under the specific decontamination synergist components and ratios defined by the present invention in the embodiments can the decontamination synergistic effect of Example 1 be significantly improved. In Comparative Examples 1, 2, 3, and 4, the nonionic surfactant, cationic polymer, green chelating agent, and solvent all fail to achieve the decontamination synergistic effect of the combined effect in the absence of one of them, which is significantly worse than that of Examples 1 and 2. At the same time, in Comparative Examples 5 and 6, when the ratio of each component is not suitable, the detergency is significantly deteriorated when added to the standard laundry detergent; in Comparative Examples 7 and 8, other nonionic surfactants and cationic polymers outside the limited range are replaced respectively, and a good decontamination effect cannot be achieved. The synergistic effect of each component in the decontamination synergist provided by the present invention is comprehensively proved.

[0108] Table 5 Detergent comparison of Examples 1 and 4 and Comparative Example added to standard laundry detergent

[0109]

[0110]

[0111] Application Example 1

[0112] The decontamination enhancer provided by the present invention can be applied to conventional laundry detergents available on the market. Taking the sample of Example 2 as an example, the formula of the decontamination enhancer added to conventional laundry detergents is shown in Table 6.

[0113] The same method as in the effect example was used to test the detergency of the blank laundry detergent without adding the sample of Example 2. The results are shown in Table 7 and Figure 3 .

[0114] It can be seen that adding a small amount of the decontamination enhancer provided by the present invention to the laundry detergent can significantly improve the decontamination power of the laundry detergent, and has a high application value.

[0115] Table 6 Application of Example 2 in laundry detergent

[0116]

[0117]

[0118] Table 7 Detergency comparison of laundry detergent containing 1% of Example 2 and blank laundry detergent

[0119] Sample name Carbon Black JB-01 Protein JB-02 Sebum JB-03 Blank laundry detergent 1.0 1.2 1.1 Containing 1% Example 2 laundry detergent 1.2 1.5 1.4

[0120] Application Example 2

[0121] The decontamination enhancer provided by the present invention can be applied to a multifunctional cleaning agent. Taking Example 3 as an example, the application formula is shown in Table 8.

[0122] Multifunctional cleaning agents have a wide range of uses, especially for cleaning hard surfaces such as glass, tiles, wood boards, metal products, etc., and have good cleaning effects.

[0123] Table 8 Application formula of Example 3 in multifunctional cleaning agent

[0124]

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A detergent synergist, characterized in that: The invention comprises the following components by mass percentage: 5-30% of nonionic surfactant, 1-20% of cationic polymer, 5-45% of green chelating agent and the balance of solvent; the nonionic surfactant is isomeric alcohol polyoxyethylene ether, the cationic polymer is a cationic polyester polyether block copolymer, the green chelating agent is an amino acid derivative, and the solvent is an alcohol solvent.

2. The decontamination synergist according to claim 1, characterized in that The invention comprises the following components by mass percentage: 15-30% of nonionic surfactant, 5-15% of cationic polymer, 15-45% of green chelating agent and the balance of solvent.

3. The decontamination synergist according to claim 1, characterized in that The invention comprises the following components by mass percentage: 25-30% of nonionic surfactant, 15% of cationic polymer, 20-35% of green chelating agent and the balance of solvent.

4. The decontamination synergist according to claim 1, characterized in that The nonionic surfactant is at least one of isomeric tridecanol polyoxyethylene ether, isomeric decanol polyoxyethylene ether and isomeric undecanol polyoxyethylene ether.

5. The decontamination synergist according to claim 1, characterized in that The cationic polyester polyether block copolymer conforms to the following structure (I): In the structure (I), R is CH3(CH2) 11 - or CH3(CH2) 17 -, 95≤n+m≤318.

6. The decontamination synergist according to claim 1, characterized in that The green chelating agent is at least one of methylglycine diacetic acid, methylglycine diacetic acid trisodium, aspartic acid diacetic acid tetrasodium, glutamic acid diacetic acid tetrasodium, iminodisuccinate tetrasodium, iminodisuccinate iron, iminodisuccinate zinc, and sodium polyaspartate.

7. The stain removal synergist according to claim 1, characterized in that The solvent is at least one of glycerol, diethylene glycol, propylene glycol, butylene glycol, pentanediol and hexylene glycol.

8. The method for preparing the detergent synergist according to any one of claims 1 to 7, characterized in that: The following steps are involved: The nonionic surfactant, cationic polymer, green chelating agent and solvent are mixed evenly, heated to 45-75° C., mixed evenly for reaction, and then cooled to less than 45° C. to obtain the decontamination enhancer.

9. Use of the detergent synergist according to any one of claims 1 to 7 in daily chemicals.

10. The use of the decontamination enhancer in daily chemicals as claimed in claim 9, characterized in that: In the daily chemical product, the content of the decontamination enhancer is 0.5-5% by mass.

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