Cleaning agent containing active ingredients and preparation method thereof
By introducing a specific proportion of hydrophobically modified alkali-soluble acrylic polymer, branched nonionic co-surfactant, and co-solvent into the detergent, the problem of balancing high foaming and high foam stability in the detergent is solved, thereby improving foam volume and stability.
Patent Information
- Application Number
- CN202511722145.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-03-03
AI Technical Summary
Existing technologies struggle to balance high foaming and high foam stability in detergents under uniform conditions, and the effect of a single additive is unstable.
Cocamidopropyl betaine and/or C12-14 alcohol polyoxyethylene ether sodium sulfate are used as the main surfactants, combined with hydrophobically modified alkali-soluble acrylic polymers, mono(2-propylheptyl)polyoxyethylene ether and dipropylene glycol n-butyl ether, to reduce the critical micelle concentration and improve foam volume and stability through synergistic effect.
It achieves increased foam volume and improved stability of detergent under neutral pH conditions, while reducing critical micelle concentration and surface tension, forming a high-foaming/stable-foaming microstructure that balances both foaming and foam-stabilizing effects.
Smart Images
Figure CN121592444A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cleaning agent technology, and in particular to a cleaning agent containing active ingredients and its preparation method. Background Technology
[0002] In cleaning and stain removal, the volume and persistence of foam directly affect consumer perception, but the two are not naturally positively correlated. Foam stability is controlled by multiple factors, including surface tension, interfacial rheology, and film elasticity. Simply pursuing high foaming power often fails to produce a long-term stable foam layer. Some existing technologies stabilize foam by adding single additives such as polymers or nanoparticles, but it is difficult to achieve both foaming and foam stability under uniform conditions. Summary of the Invention
[0003] In view of the above technical problems, the present invention provides a cleaning agent containing active ingredients and a method for preparing the same, so as to solve the problems of unstable effect of single additives and difficulty in obtaining high foaming and high foam stability at the same time in the prior art.
[0004] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part from practice of this disclosure.
[0005] According to one aspect of the present invention, a cleaning agent containing an active ingredient is provided, comprising, by weight of the total mass of the cleaning agent: The main surfactant is 5% to 15%, wherein the main surfactant is cocamidopropyl betaine and / or C12-14 alcohol polyoxyethylene ether sulfate sodium sulfate; Hydrophobically modified alkali-soluble acrylic polymer, 0.005%–0.05%; The nonionic co-surfactant is 0.05% to 1.0%, wherein the nonionic co-surfactant is mono(2-propylheptyl)polyoxyethylene ether; The co-solvent is 0.2% to 1.0%, and the co-solvent is dipropylene glycol n-butyl ether; The remainder is water; and the pH is 6.5–7.5; wherein the cleaning agent reduces the critical micelle concentration and improves foam volume and stability through the synergistic effect of the main surfactant, the hydrophobically modified alkali-soluble acrylic polymer, the mono(2-propylheptyl)polyoxyethylene ether, and the dipropylene glycol n-butyl ether.
[0006] Furthermore, the main surfactant is cocamidopropyl betaine, and based on 100 parts by mass of the main surfactant, the hydrophobic modified alkali-soluble acrylic polymer, the mono(2-propylheptyl)polyoxyethylene ether, and the dipropylene glycol n-butyl ether have mass parts of 0.05-0.5, 1-3, and 3-8, respectively.
[0007] Furthermore, the average number of repeating olefin units in the mono(2-propylheptyl)polyoxyolefin ether is approximately 6, and the hydrophobically modified alkali-soluble acrylic polymer is an alkali-soluble acrylic polymer containing C12 to C18 hydrophobic side chains.
[0008] Furthermore, the main surfactant is the C12-14 alcohol polyoxyethylene ether sodium sulfate, and based on 100 parts by mass of the main surfactant, the hydrophobic modified alkali-soluble acrylic polymer, the mono(2-propylheptyl)polyoxyethylene ether, and the dipropylene glycol n-butyl ether have mass parts of 0.05-0.5 parts, 1-3 parts, and 3-8 parts, respectively.
[0009] Furthermore, the critical packing parameter of the cleaning agent satisfies the following conditions: when the main surfactant is cocamidopropyl betaine, the critical packing parameter is 0.50–0.62; when the main surfactant is C12-14 sodium polyoxyethylene ether sulfate, the critical packing parameter is 0.16–0.26; the critical packing parameter is according to... The calculations are performed, where A is obtained from the surface tension-concentration curve at 25°C and pH 7.0 using the Gibbs equation, and v and I are estimated values.
[0010] According to a second aspect of this disclosure, a method for preparing a detergent containing an active ingredient is provided, the method comprising the following steps: S1) Add the main surfactant to deionized water to prepare an aqueous solution of the main surfactant with a mass fraction of 3% to 15%, wherein the main surfactant is cocamidopropyl betaine and / or C12-14 alcohol polyoxyethylene ether sulfate sodium sulfate; S2) Under stirring, add 0.05% to 1.0% of a nonionic co-surfactant and 0.2% to 1.0% of a co-solvent by mass, wherein the nonionic co-surfactant is mono(2-propylheptyl)polyoxyethylene ether and the co-solvent is dipropylene glycol n-butyl ether. S3) Adjust the pH of the solution to 6.5–7.5 using an alkaline solution; S4) Add 0.005% to 0.05% of the total mass of hydrophobic modified alkali-soluble acrylic polymer at a pH of 6.5 to 7.5, and continue stirring until homogeneous and clear; S5) Defoaming or filtering to obtain the cleaning agent according to any one of claims 1 to 5.
[0011] Furthermore, the proportions for steps S1 to S4 are implemented as follows: The main surfactant is 7%; The hydrophobically modified alkali-soluble acrylic polymer is 0.014%; The mono(2-propylheptyl)polyoxyolefin ether is 0.116%; The dipropylene glycol n-butyl ether is 0.35%; Adjust the pH to 7.0.
[0012] The technical solution disclosed herein has the following beneficial effects: The synergistic approach proposed in this disclosure introduces an appropriate ratio of polymer, branched nonionic surfactant, and co-solvent into a commonly used anionic / ampholy system, and mixes them at a neutral pH. This approach can simultaneously and significantly reduce the critical micelle concentration, reduce the minimum surface tension, and adjust the CPP to a range that is conducive to the formation of high-foaming / stable-foaming microstructures, thus achieving a balance between foaming and foam stabilization. Attached Figure Description
[0013] Figure 1 This is a flowchart illustrating a method for preparing a cleaning agent containing active ingredients, as described in the embodiments of this specification. Figure 2 This is a structural diagram of the mono(2-propylheptyl)polyoxyolefin ether used in the embodiments of this specification; Figure 3 This is a structural diagram of sodium C12-14 alcohol polyoxyethylene (2) ether sulfate in the embodiments of this specification; Figure 4 This is a structural diagram of cocamidopropyl betaine in the embodiments of this specification. Detailed Implementation
[0014] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete, and to fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure may be practiced with one or more of these specific details omitted. In other instances, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of this disclosure.
[0015] Furthermore, the accompanying drawings are merely illustrative of this disclosure. The same reference numerals in the drawings denote the same or similar parts, and therefore, repeated descriptions of them will be omitted.
[0016] Example 1
[0017] Reference Figure 1The diagram shows a flow chart of a method for preparing a detergent containing active ingredients according to an embodiment of the present invention. The detergent is prepared using the following raw materials: cocamidopropyl betaine (CAPB, 35% w / w aqueous solution), C12-14 alcohol polyoxyethylene (2) ether sulfate sodium (SLE2S, 70% w / w aqueous solution), hydrophobically modified alkali-soluble acrylic polymer (HM-P), mono(2-propylheptyl) polyoxyethylene ether (hereinafter referred to as Lut, active ingredient > 99% w / w), and dipropylene glycol n-butyl ether (Dpnb). The structure of the above mono(2-propylheptyl) polyoxyethylene ether is as follows: Figure 2 As shown, the polyoxyethylene segments of Lut are m=1 and n=6; the structure of C12-14 alcohol polyoxyethylene (2) ether sodium sulfate is as follows Figure 3 As shown, cocamidopropyl betaine, such as Figure 4 As shown.
[0018] Taking 1,000 kg of finished product as an example, weigh the following according to the proportions calculated based on the active ingredient: 7.00% of the total main surfactant (CAPB or SLE2S alone, or both), 0.014% HM-P, 0.116% Lut, 0.35% Dpnb, with the remainder being water, and adjust the pH to 7.0 with alkaline solution. If CAPB is used as the sole main surfactant, weigh approximately 200 g of CAPB solution to provide approximately 70 g of active ingredient; if SLE2S is used as the sole main surfactant, weigh approximately 100 g of SLE2S solution to provide approximately 70 g of active ingredient; Lut and Dpnb are added directly as active ingredients if pure; HM-P is added according to the active ingredient calculation. The specific operating sequence is as follows: Figure 1 The order includes: S1) Add the main surfactant to deionized water to prepare an aqueous solution with a main surfactant mass fraction of 3% to 15%; S2) Add Lut (0.05% to 1.0% of total mass) and Dpnb (0.2% to 1.0% of total mass) sequentially while stirring. S3) Adjust the pH to 6.5-7.5 (preferably 7.0) using an alkaline solution; S4) Add HM-P (0.005% to 0.05% of the total mass) under this pH condition, and continue stirring until clear and homogeneous; S5) Allow to stand to remove bubbles or filter to obtain the finished product.
[0019] The product obtained above was used for performance evaluation and data support. The foaming performance was assessed using the Ross-Miles method (ASTM D-1173-53): The test solution was kept at a constant temperature of 49°C. After pre-rinsing a 5cm inner diameter graduated cylinder with 50mL of test solution, 200mL of test solution was added, and foam was generated dropwise from the top; the foam height was recorded and... The foam volume was calculated, and volumes were read at t = 0, 5, 10, and 30 min; each formulation was repeated 5 times and the average was taken. Under isothermal conditions of 49°C and pH = 7.0, given a fixed concentration of the main surfactant, the effects of different additives and their combinations on the foam volume and 30-min stability of CAPB and SLE2S solutions were investigated: In the CAPB system, the combination of HM-P and Lut can achieve higher bubble volume and better retention. In the SLE2S system, HM-P increases the initial bubble volume but does not improve stability, while Lut or Dpnb can reduce the bubble disintegration rate to some extent.
[0020] At the same pH (7.0), the effects of different additives on the critical micelle concentration (cmc), minimum surface tension, and critical packing parameter (CPP) were also determined and calculated according to the method described above. Specifically, the critical packing parameter was calculated according to... The calculations are performed, where A is obtained from the surface tension-concentration curve at 25°C and pH 7.0 using the Gibbs equation, and v is related to... For estimates, v is the volume of the hydrophobic chain, I is the maximum effective length of the hydrophobic chain, and A is the optimal cross-sectional area occupied by the head group. It is obtained by back-calculation of the surface tension-concentration curve using the Gibbs equation. CPP reflects the crowding and arrangement of surfactant molecules at the interface. If CPP increases, it generally means that the film strength, elasticity, and viscosity are enhanced, which is beneficial to foaming and a certain degree of stability; however, if it is too high, it may also cause foaming due to film perforation, so a balance needs to be achieved.
[0021] For both types of main surfactants (CAPB and SLE2S), the addition of HM-P or Lut alone decreased the cmc; in SLE2S, HM-P reduced micelle formation from 0.073 g·L⁻¹. -1 Transfer to 0.052 g·L -1 The addition of Lut or dipropylene glycol n-butyl ether can also reduce the intermolecular repulsion and counterion-related entropy terms of ionic surfactant head groups, thereby reducing the cmc (in some cases, increased solubility may also increase the cmc, and the combined effect of the two leads to a slight decrease in the cmc of SLE2S); the composite system containing surfactant / polymer / co-surfactant / co-solvent gives an even lower cmc: approximately 0.045 g·L for SLE2S. -1 CAPB approximately 0.008 g·L -1 This is approximately half that of each of the individual surfactants. Regarding minimum surface tension, the combination of CAPB and Lut can reduce the surface tension to approximately 29.4 mN·m. -1 Compared to approximately 30.4 mN·m of CAPB solution alone, -1Further reductions were observed; combinations of SLE2S with Lut or dipropylene glycol n-butyl ether also showed lower minimum surface tension than SLE2S alone. The above data and trends were obtained at 25°C, pH 7.0, and at a fixed concentration.
[0022] Example 2
[0023] In Example 2, SLE2S was selected as the sole main surfactant, and the process sequence was the same as in Example 1. The component ratio was: main surfactant 7.00% w / w, HM-P 0.014% w / w, Lut 0.116% w / w, Dpnb 0.35% w / w, pH 7.0, and steps S1 to S5 were performed. The results obtained by testing using the same method were as follows: The critical micelle concentration (cmc) was significantly lower than that of SLE2S alone. The cmc of the composite system (main surfactant / polymer / co-surfactant / co-solvent) at 25°C and pH 7.0 was approximately 0.045 g·L. -1 It is approximately half that of a single main surfactant; the minimum surface tension is lower than that of SLE2S alone (it decreases when combined with Lut or Dpnb); based on adsorption-area calculations, the CPP of the SLE2S system is between 0.16 and 0.26 (e.g., SLE2S+Lut+Dpnb is 0.26, while single SLE2S is 0.16). Regarding foaming behavior, at 49°C, pH 7.0, and a main surfactant concentration of 0.7 g·L⁻¹... -1 The time-time curves show that adding HM-P to the SLE2S system often increases the initial foam volume but has limited effect on maintaining stability at 30 min; while adding Lut or Dpnb can reduce the foam decay rate to some extent. This difference is related to the head group repulsion of ionic surfactants, the formation of mixed micelles of co-surfactants, and changes in film rheology. In the evaluation of liposolization, the compound system containing SLE2S also shows better liposolization efficiency than a single main surfactant.
[0024] Example 3
[0025] In Example 3, the actual amount added in Example 1 was converted based on 100 parts by weight of the main surfactant: when the main surfactant (CAPB) was 100 parts by weight, HM-P was 0.2 parts by weight (0.014 / 7×100), Lut was 1.657 parts by weight (0.116 / 7×100), and Dpnb was 5.0 parts by weight (0.35 / 7×100). Using the same preparation sequence and testing method as described in Example 1 (S1-S5), the following results can be obtained repeatedly: The CMC of the composite system is lower than that of the single main surfactant (approximately 0.008 g·L in the case of CAPB). -1 The minimum surface tension is further reduced (CAPB+Lut approximately 29.4 mN·m).-1 CPP is located in the flexible bilayer region of 0.50 to 0.62 (such as CAPB+Lut+Dpnb, which is 0.62), and exhibits higher initial bubble volume and better bubble retention time at 49°C.
[0026] Example 4
[0027] In Example 4, the conversion based on 100 parts by mass of the main surfactant was performed in Example 3: when the main surfactant (SLE2S) was 100 parts by mass, HM-P = 0.2 parts by mass, Lut = 1.657 parts by mass, and Dpnb = 5.0 parts by mass. Prepared according to S1-S5 of Example 1 and tested using the same methods: The CMC of the composite system is approximately 0.045 g·L. -1 Combined with Lut or Dpnb, it can reduce the minimum surface tension; CPP is between 0.16 and 0.26 (e.g., 0.26 for SLE2S+Lut+Dpnb, and 0.16 for SLE2S alone); under Ross-Miles conditions at 49°C, adding HM-P can increase the initial foam volume, while adding Lut or Dpnb can slow down foam decay.
[0028] In one product embodiment, cocamidopropyl betaine (CAPB) was selected as the sole main surfactant to prepare the detergent. Based on 1.000 kg of finished product (calculated by active ingredient), the formulation was as follows: 7.00% (w / w, CAPB) main surfactant, 0.014% (w / w) hydrophobically modified alkali-soluble acrylic polymer (HM-P), 0.116% (w / w) mono(2-propylheptyl)polyoxyethylene ether (Lut), 0.35% (w / w) dipropylene glycol n-butyl ether, with the balance being water, and the pH adjusted to 7.0. Prepare a 3%–15% aqueous solution (preferably 7% w / v) of the main surfactant. Add Lut (0.05%–1.0% of total mass) and dipropylene glycol n-butyl ether (0.2%–1.0% of total mass) sequentially with stirring. Adjust the pH to 6.5–7.5 (preferably 7.0) with alkaline solution. Under this pH condition, add HM-P (0.005%–0.05% of total mass) and stir until clear and homogeneous. Allow to stand to remove bubbles or filter to obtain the finished product.
[0029] In another product embodiment, C12-14 alcohol polyoxyethylene (2) ether sodium sulfate (SLE2S) was selected as the sole main surfactant, and the other raw materials, feeding order and process were the same as above: main surfactant 7.00% (w / w, SLE2S), HM-P 0.014% (w / w), Lut 0.116% (w / w), dipropylene glycol n-butyl ether 0.35% (w / w), the balance being water, and the pH was adjusted to 7.0.
[0030] In one product embodiment, a cleaning agent was prepared by using cocamidopropyl betaine (CAPB) and C12-14 sodium polyoxyethylene (2) ether sulfate (SLE2S). Based on 1.000 kg of finished product (all calculated based on active ingredients): the total main surfactant was 7.00% (w / w), of which the active ingredient mass ratio of CAPB to SLE2S was 1:1, i.e., 3.50% (w / w) each; hydrophobically modified alkali-soluble acrylic polymer (HM-P) was 0.014% (w / w); mono(2-propylheptyl)polyoxyethylene ether (Lut) was 0.116% (w / w); dipropylene glycol n-butyl ether was 0.35% (w / w); the balance was water, and the pH was adjusted to 7.0. The finished product was obtained by operating in the order of S1 to S5.
[0031] Example dosage based on commercial solutions: When CAPB is a 35% (w / w) aqueous solution, approximately 100g provides 35g of active ingredient; when SLE2S is a 70% (w / w) aqueous solution, approximately 50g provides 35g of active ingredient; HM-P 0.14g, Lut 1.16g, dipropylene glycol n-butyl ether 3.50g, the remainder is added to water to 1.000kg, and pH adjustment and degassing are completed between the above steps.
[0032] In another product embodiment, the total amount of the main surfactants is still 7.00% (w / w), of which the active ingredient mass ratio of CAPB:SLE2S is 3:7, that is, CAPB is 2.10% (w / w) and SLE2S is 4.90% (w / w); HM-P is 0.014% (w / w), Lut is 0.116% (w / w), dipropylene glycol n-butyl ether is 0.35% (w / w), and the balance is water, with the pH adjusted to 7.0. Samples were prepared according to the same S1 to S5 processes.
[0033] In another product embodiment, the total amount of the main surfactants remains 7.00% (w / w), of which the active ingredient mass ratio of CAPB:SLE2S is 7:3, i.e., CAPB is 4.90% (w / w) and SLE2S is 2.10% (w / w); HM-P is 0.014% (w / w), Lut is 0.116% (w / w), dipropylene glycol n-butyl ether is 0.35% (w / w); the balance is water, and the pH is adjusted to 7.0. The product is prepared in the same sequence as S1 to S5.
[0034] In another product embodiment, cocamidopropyl betaine (CAPB) was selected as the sole main surfactant, and the detergent was prepared by proportioning each active component to the lower limit of its claims. Based on 1.000 kg of finished product (calculated by active ingredient), the formulation was: 5.00% (w / w, CAPB) main surfactant, 0.005% (w / w) hydrophobically modified alkali-soluble acrylic polymer (HM-P), 0.050% (w / w) mono(2-propylheptyl)polyoxyethylene ether (Lut), 0.20% (w / w) dipropylene glycol n-butyl ether, with the balance being water, and the pH adjusted to 7.0 with an alkaline solution.
[0035] The specific operation is as follows: First, CAPB is dissolved in deionized water to prepare an aqueous solution with a main surfactant mass fraction of 5.00%; under stirring conditions, Lut (0.050% of the total mass) and dipropylene glycol n-butyl ether (0.20% of the total mass) are added sequentially, and stirring is continued until uniform; the pH of the system is adjusted to 6.5-7.5 (7.0 in this example) using alkaline solution; under this pH condition, HM-P (0.005% of the total mass) is added, and stirring is continued until the solution is clear and uniform, and the product is obtained by standing to remove bubbles or filtering.
[0036] The performance of this example was evaluated using the same Ross-Miles foaming experiment and surface tension-concentration test method as in Example 1. The results showed that when the main surfactant and each additive were at the lower limit of their respective mass fraction ranges, the resulting detergent, compared to the control system containing only CAPB, exhibited a further decrease in critical micelle concentration, and the foam volume and foam height decay rates were significantly improved at 30 min. This indicates that the synergistic effect between the main surfactant, HM-P, Lut, and dipropylene glycol n-butyl ether still exists under the minimum formulation conditions.
[0037] The synergistic approach proposed in the above embodiments, by introducing appropriate proportions of polymers, branched nonionic surfactants, and co-solvents into commonly used anionic / ampholy systems and mixing them at neutral pH, can simultaneously and significantly reduce the critical micelle concentration, reduce the minimum surface tension, and adjust the CPP to a range conducive to the formation of high-foaming / stable-foaming microstructures, thus achieving a balance between foaming and foam stabilization.
[0038] In another product embodiment, C12-14 alcohol polyoxyethylene (2) ether sodium sulfate (SLE2S) was selected as the sole main surfactant, and the detergent was prepared by proportioning each active component to the upper limit of its claims. Based on 1.000 kg of finished product (calculated by active ingredient), the formulation was: 15.00% (w / w, SLE2S) main surfactant, 0.050% (w / w) hydrophobically modified alkali-soluble acrylic polymer (HM-P), 1.00% (w / w) mono(2-propylheptyl)polyoxyethylene ether (Lut), 1.00% (w / w) dipropylene glycol n-butyl ether, with the remainder being water, and the pH adjusted to 7.0 with an alkaline solution.
[0039] The specific operation is as follows: First, dissolve SLE2S in deionized water to prepare an aqueous solution with a main surfactant mass fraction of 15.00%; under stirring conditions, add Lut (1.00% of the total mass) and dipropylene glycol n-butyl ether (1.00% of the total mass) in sequence, and stir until the solution is homogeneous and transparent; adjust the pH of the system to 6.5-7.5 (7.0 in this example) using alkaline solution; under this pH condition, slowly add HM-P (0.050% of the total mass), maintain stirring until the system becomes clear and homogeneous again, and allow it to stand to remove bubbles or filter to obtain the finished product.
[0040] Ross-Miles foaming performance tests and surface tension-concentration curve measurements were performed on this embodiment. The test results showed that when each component was at the upper limit of its allowable mass fraction range, the system could still form a uniform and stable detergent formulation. The critical micelle concentration remained at a similarly low level compared to the compound system in Example 2. The minimum surface tension was in the range that is conducive to forming high foam volume and good foam stability. The volume retention rate of the foam within 30 minutes was better than that of the control formulation containing only SLE2S, indicating that under high ratio conditions, the active components of the present invention also have a significant synergistic effect.
[0041] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.
[0042] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.
Claims
1. A cleaning agent containing an active ingredient, characterized in that, Based on the total mass of the cleaning agent, it includes: The main surfactant is 5% to 15%, wherein the main surfactant is cocamidopropyl betaine and / or C12-14 alcohol polyoxyethylene ether sodium sulfate; Hydrophobically modified alkali-soluble acrylic polymer, 0.005%–0.05%; The nonionic co-surfactant is 0.05% to 1.0%, wherein the nonionic co-surfactant is mono(2-propylheptyl)polyoxyethylene ether; The co-solvent is 0.2% to 1.0%, and the co-solvent is dipropylene glycol n-butyl ether; The remainder is water, and the pH is 6.5–7.5; wherein the cleaning agent reduces the critical micelle concentration and improves foam volume and stability through the synergistic effect between the main surfactant and the hydrophobically modified alkali-soluble acrylic polymer, the mono(2-propylheptyl)polyoxyethylene ether and the dipropylene glycol n-butyl ether.
2. The cleaning agent containing active ingredients according to claim 1, characterized in that, The main surfactant is cocamidopropyl betaine, and based on 100 parts by mass of the main surfactant, the hydrophobic modified alkali-soluble acrylic polymer, the mono(2-propylheptyl)polyoxyethylene ether and the dipropylene glycol n-butyl ether have mass parts of 0.05-0.5, 1-3 and 3-8, respectively.
3. The cleaning agent containing active ingredients according to claim 1, characterized in that, The mono(2-propylheptyl)polyoxyalkylene ether has an average number of 6 repeating olefin units, and the hydrophobically modified alkali-soluble acrylic polymer is an alkali-soluble acrylic polymer containing C12 to C18 hydrophobic side chains.
4. The cleaning agent containing active ingredients according to claim 1, characterized in that, The main surfactant is the C12-14 alcohol polyoxyethylene ether sodium sulfate, and based on 100 parts by mass of the main surfactant, the hydrophobic modified alkali-soluble acrylic polymer, the mono(2-propylheptyl)polyoxyethylene ether and the dipropylene glycol n-butyl ether are 0.05-0.5 parts, 1-3 parts and 3-8 parts by mass, respectively.
5. The cleaning agent containing active ingredients according to claim 1, characterized in that, The critical packing parameter of the cleaning agent satisfies the following conditions: when the main surfactant is cocamidopropyl betaine, the critical packing parameter is 0.50–0.62; when the main surfactant is C12-14 sodium polyoxyethylene ether sulfate, the critical packing parameter is 0.16–0.26; the critical packing parameter is determined according to... The calculations are performed, where A is obtained from the surface tension-concentration curve at 25°C and pH 7.0 using the Gibbs equation, and v and I are estimated values.
6. A method for preparing a detergent containing active ingredients, characterized in that, The method includes the following steps: S1) Add the main surfactant to deionized water to prepare an aqueous solution of the main surfactant with a mass fraction of 3% to 15%, wherein the main surfactant is cocamidopropyl betaine and / or C12-14 alcohol polyoxyethylene ether sulfate sodium sulfate; S2) Under stirring, add 0.05% to 1.0% of a nonionic co-surfactant and 0.2% to 1.0% of a co-solvent by mass, wherein the nonionic co-surfactant is mono(2-propylheptyl)polyoxyethylene ether and the co-solvent is dipropylene glycol n-butyl ether. S3) Adjust the pH of the solution to 6.5–7.5 using an alkaline solution; S4) Add 0.005% to 0.05% of the total mass of hydrophobic modified alkali-soluble acrylic polymer at a pH of 6.5 to 7.5, and continue stirring until homogeneous and clear; S5) Defoaming or filtering to obtain the cleaning agent according to any one of claims 1 to 5.
7. The method for preparing a detergent containing active ingredients according to claim 6, characterized in that, The mixing ratios for steps S1 to S4 are as follows: The main surfactant is 7%; The hydrophobically modified alkali-soluble acrylic polymer is 0.014%; The mono(2-propylheptyl)polyoxyolefin ether is 0.116%; The dipropylene glycol n-butyl ether is 0.35%; Adjust the pH to 7.0.