A transparent thickening suspension system, preparation method and use

Abstract

The invention belongs to the field of daily chemical materials, and discloses a transparent thickening suspension system, which comprises the following components by weight: 10 to 30 parts of fatty alcohol polyoxyethylene ether sodium sulfate; 1 to 10 parts of cocamidopropyl betaine; 4 to 10 parts of acrylic emulsion Emul 400; an appropriate amount of sodium hydroxide or citric acid; and the balance of water; the pH range of the system is 5-7. The system can provide good light transmittance within the range of pH 5-7, and the invention also discloses a preparation method and use of the system.

Description

Technical Field

[0001] The invention belongs to the field of daily chemical materials, and more specifically, relates to a transparent thickening suspension system, a preparation method and application thereof. Background Art

[0002] EMUL 400 acrylic acid (ester) copolymer is an alkali-swellable anionic polyacrylic acid rheology modifier with suspending, thickening and stabilizing effects. It is used in personal care products based on surfactants.

[0003] The pH application range of existing alkali-swellable anionic polyacrylic acid rheology modifiers is very narrow, mostly between 6 and 7. In a specific surfactant system, only the pH range of 6.5-7 can maintain high transmittance.

[0004] CN201810128329.4 discloses a whitening facial cleanser and a preparation method thereof, wherein the facial cleanser is made of the following materials: sodium lauryl alcohol polyoxyethylene ether succinate sulfonate, disodium coconut oil succinate xanthate, sodium fatty alcohol polyoxyethylene ether sulfate, cocamidopropyl betaine, sodium lauryl alcohol ether sulfate, acrylic resin, deionized water, guar gum, polyethylene glycol distearate and polyol;

[0005] CN02136821.X discloses a shampoo, which is composed of sodium polyoxyethylene fatty alcohol ether sulfate, cocamidopropyl betaine, coconut oil diethanolamide, silicone oil, guar gum, polyethylene glycol 6000 distearate, almond oil, ginger, black cumin seed oil, peppermint oil, ethylene glycol distearate, preservatives, flavors, and deionized water.

[0006] CN201310182792.4 discloses a hand sanitizer with continuous antibacterial effect, long-lasting fragrance, rich in natural moisturizing ingredients and nutritional factors, and a preparation method thereof. The main ingredients of the hand sanitizer are: sodium polyoxyethylene fatty alcohol ether sulfate, cocamidopropyl betaine, coconut oil fatty acid diethanolamide, clove essence, bamboo vinegar, NaCl, and LGP.

[0007] It can be seen that the anionic surfactant sodium polyoxyethylene fatty alcohol ether sulfate and the amphoteric surfactant cocamidopropyl betaine are already a common surfactant combination in daily chemical systems.

[0008] However, when existing acrylic acid (ester) copolymers are used as suspension thickeners for the system, the turbidity of the system is generally high. Taking Carbo SF-1 as an example, its low turbidity pH range is between 6.7 and 7, which poses challenges and limitations to the operating requirements of operators and the scope of application of the formula.

[0009] Therefore, the technical problem to be solved by the present application is: how to improve the light transmittance of the surfactant system in a wide pH range. Summary of the invention

[0010] The main purpose of the present invention is to provide a transparent thickening suspension system, which can provide good light transmittance within the range of pH 5-7. The present invention also discloses a preparation method and application of the system.

[0011] According to a first aspect of the present invention, there is provided a transparent thickening suspension system comprising the following components in parts by weight:

[0012] 10-30 parts of sodium polyoxyethylene fatty alcohol ether sulfate;

[0013] 1-10 parts of cocamidopropyl betaine;

[0014] Acrylic emulsion Emul 400 4-10 parts;

[0015] Sodium hydroxide or citric acid as appropriate;

[0016] The remaining amount of water;

[0017] The pH range of the system is 5-7.

[0018] Acrylic emulsion Emul 400 was supplied by Guangzhou Tianci High-tech Materials Co., Ltd.; cocamidopropyl betaine was supplied by Guangzhou Tianci High-tech Materials Co., Ltd., brand TC-CAB35;

[0019] The chemical formula of fatty alcohol polyoxyethylene ether sodium sulfate is RO(CH 2 CH 2 O) n -SO 3 Na (n=2 or 3, R is a 12-15 alkyl group) was purchased from Hunan Lichen Industrial Co., Ltd.; sodium polyoxyethylene fatty alcohol ether sulfate is a common material in this field and can also be purchased from other suppliers.

[0020] The transparent thickening suspension system includes the following components in parts by weight:

[0021] 15-20 parts of sodium polyoxyethylene fatty alcohol ether sulfate;

[0022] 6-10 parts of cocamidopropyl betaine;

[0023] Acrylic emulsion Emul 400 5-8 parts;

[0024] Sodium hydroxide or citric acid as needed; the rest is water.

[0025] The transparent thickening suspension system includes the following components in parts by weight:

[0026] 18 parts of fatty alcohol polyoxyethylene ether sodium sulfate;

[0027] 8 parts of cocamidopropyl betaine;

[0028] Acrylic emulsion Emul 4007 parts;

[0029] Sodium hydroxide or citric acid as needed; the rest is water.

[0030] At the same time, the present invention also discloses a method for preparing the transparent thickening suspension system as described above, which is specifically as follows:

[0031] In a beaker, add a certain amount of water, add sodium polyoxyethylene fatty alcohol ether sulfate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion Emul 400 and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

[0032] The transparent thickening suspension system is used as a thickening suspension additive for daily chemical products.

[0033] In the application of the transparent thickening suspension system, the daily chemical product is shower gel, shampoo, make-up remover, hand soap or cleansing gel.

[0034] One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:

[0035] In the surfactant system of fatty alcohol polyoxyethylene ether sodium sulfate and cocamidopropyl betaine, acrylic emulsion Emul400 is used as a suspension stabilizing thickener, so that the system can maintain a good light transmittance within the range of pH 5-7. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0037] Figure 1 This is a turbidity table under different pH conditions of Example 1 and Comparative Example 1 of the present application. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0040] Example 1

[0041] A method for preparing a suspension system is as follows:

[0042] In a beaker, add a certain amount of water, add sodium polyoxyethylene fatty alcohol ether sulfate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion Emul 400 and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

[0043] Its formula is shown in Table 1 below:

[0044] Table 1 Recipe

[0045]

[0046] In Table 1, the pH was adjusted between 5 and 8; Figure 1 The turbidity variation trend at pH 5-8 is shown, with good performance in the pH range of 5-7.

[0047] The viscosity in the pH range of 5-7 is shown in Table 2 as follows:

[0048] Table 2 pH and viscosity correspondence table

[0049] pH Viscosity / mPa·s 5.0 5200 5.6 4610 5.9 4460 6.3 3900 6.5 3660 6.7 4390 6.8 4580 7.0 4400

[0050] Example 2

[0051] A method for preparing a suspension system is as follows:

[0052] In a beaker, add a certain amount of water, add sodium polyoxyethylene fatty alcohol ether sulfate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion Emul 400 and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

[0053] Its formula is shown in Table 3 below:

[0054] Table 3 Recipe

[0055]

[0056] In Table 3, the pH is adjusted between 5 and 8. After testing, the turbidity of the system is less than 50 when the pH is between 5 and 7.

[0057] Example 3

[0058] A method for preparing a suspension system is as follows:

[0059] In a beaker, add a certain amount of water, add sodium polyoxyethylene fatty alcohol ether sulfate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion Emul 400 and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

[0060] Its formula is shown in Table 4 below:

[0061] Table 4 Recipe

[0062]

[0063] In Table 4, the pH is adjusted between 5 and 8. After testing, the turbidity of the system is less than 50 when the pH is between 5 and 7.

[0064] Example 4

[0065] A method for preparing a suspension system, the formula of which is shown in Table 5 below:

[0066] Table 5 Recipe

[0067]

[0068] In Table 5, the pH is adjusted between 5 and 8. After testing, the turbidity of the system is less than 50 when the pH is between 5 and 7.

[0069] Example 5

[0070] A method for preparing a suspension system, the formula of which is shown in Table 6 below:

[0071] Table 6 Recipe

[0072]

[0073] In Table 6, the pH was adjusted between 5 and 8. After testing, the turbidity of the system was less than 50 when the pH was between 5 and 7.

[0074] Example 6

[0075] A method for preparing a suspension system, the formula of which is shown in Table 7 below:

[0076] Table 7 Recipe

[0077]

[0078] In Table 7, the pH is adjusted between 5 and 8. After testing, the turbidity of the system is less than 50 when the pH is between 5 and 7.

[0079] Example 7

[0080] A method for preparing a suspension system, the formula of which is shown in Table 8 below:

[0081] Table 8 Recipe

[0082]

[0083] In Table 8, the pH was adjusted between 5 and 8. After testing, the turbidity of the system was less than 50 when the pH was between 5 and 7.

[0084] Example 8

[0085] A method for preparing a suspension system, the formula of which is shown in Table 9 below:

[0086] Table 9 Recipe

[0087]

[0088] In Table 9, the pH was adjusted between 5 and 8. After testing, the turbidity of the system was less than 50 when the pH was between 5 and 7.

[0089] Comparative Example 1

[0090] A method for preparing a suspension system is as follows:

[0091] In a beaker, add a certain amount of water, add sodium fatty alcohol polyoxyethylene ether sulfate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion SF-1 (commercially available product) and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

[0092] Its formula is shown in Table 10 below:

[0093] Table 10 Recipe

[0094]

[0095] In Table 10, the pH is adjusted between 5 and 8. After testing, refer to Figure 1 , the turbidity of the system is less than 50 in the pH range of 6.6-7.

[0096] Comparative Example 2

[0097] A method for preparing a suspension system is as follows:

[0098] In a beaker, add a certain amount of water, add sodium laurate sarcosinate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion Emul 400 and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

[0099] Its formula is shown in Table 11 below:

[0100] Table 11 Recipe

[0101]

[0102] In Table 11, the pH is adjusted between 5 and 8. After testing, the turbidity of the system is lower than 50 in the pH range of 7 to 8, and higher than 50 in other pH ranges.

[0103] Comparative Example 3

[0104] A method for preparing a suspension system is as follows:

[0105] In a beaker, add a certain amount of water, add sodium methyl cocoyl taurate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion Emul 400 and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

[0106] Its formula is shown in Table 12 below:

[0107] Table 12 Recipe

[0108]

[0109] In Table 12, the pH is adjusted between 5 and 8. After testing, the turbidity of the system is lower than 50 in the pH range of 7 to 8, and higher than 50 in other pH ranges.

[0110] In summary:

[0111] The formula of this scheme must have good light transmittance in a wider pH range in the presence of sodium polyoxyethylene fatty alcohol ether sulfate, cocamidopropyl betaine and Emul 400.

[0112] This rule does not apply to other anionic surfactants or amphoteric surfactant systems.

[0113] The system of this solution is suitable for daily chemical products such as shower gel, shampoo, makeup remover, hand soap, cleansing gel, etc.

Claims

1. A transparent thickening suspension system, characterized in that: It includes the following components by weight: 10-30 parts of sodium polyoxyethylene fatty alcohol ether sulfate; 1-10 parts of cocamidopropyl betaine; Acrylic emulsion Emul 400 4-10 parts; Sodium hydroxide or citric acid as appropriate; Add the remaining amount of water to 100 parts; When the pH value of the system is in the range of 5-7, the turbidity of the system is kept below 50.

2. The transparent thickening suspension system according to claim 1, characterized in that: It includes the following components by weight: 15-20 parts of sodium polyoxyethylene fatty alcohol ether sulfate; 6-10 parts of cocamidopropyl betaine; Acrylic emulsion Emul 400 5-8 parts; Sodium hydroxide or citric acid in appropriate amount; the remaining amount of water is added to 100 parts.

3. The transparent thickening suspension system according to claim 2, characterized in that: It includes the following components by weight: 18 parts of fatty alcohol polyoxyethylene ether sodium sulfate; 8 parts of cocamidopropyl betaine; Acrylic emulsion Emul 400 7 parts; Sodium hydroxide or citric acid in appropriate amount; the remaining amount of water is added to 100 parts.

4. A method for preparing a transparent thickening suspension system as claimed in any one of claims 1 to 3, characterized in that: The details are as follows: In a beaker, add a certain amount of water, add sodium fatty alcohol polyoxyethylene ether sulfate and disperse evenly; then add cocamidopropyl betaine and disperse evenly; then add acrylic emulsion Emul 400 and disperse evenly; finally add sodium hydroxide or citric acid and disperse evenly.

5. Use of the transparent thickening suspension system according to any one of claims 1 to 3, characterized in that: The transparent thickening suspension system is used as a thickening suspension additive for daily chemical products.

6. Use of the transparent thickening suspension system according to claim 5, characterized in that: The daily chemical product is shower gel, shampoo, make-up remover, hand soap or cleansing gel.

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