High-foaming agent based on amino acid surfactant

Abstract

The invention belongs to the technical field of high-foaming agents, and provides a high-foaming agent based on an amino acid surfactant. The high-foaming agent based on the amino acid surfactant comprises the following components in percentage by mass: 10-35% of alkyl glycoside sulfosuccinate, 10-25% of the amino acid surfactant and the balance of water. According to the high-foaming agent disclosed by the invention, the alkyl glycoside sulfosuccinate salt and the amino acid surfactant are compounded, so that the high-foaming agent is high in biocompatibility, easy to degrade, skin-friendly, non-irritating, relatively high in foaming power and foam stability, low in viscosity of a system after being diluted, capable of being compounded with various substances and widely applied to products such as foam type detergents, facial cleansers and shower gel; the foaming performance of the traditional amino acid surfactant is improved, and meanwhile, the hard water resistance of the amino acid surfactant is improved; compared with a traditional amino acid surfactant, the alkyl glycoside sulfosuccinate salt is lower in cost, and the use cost of the amino acid surfactant formula is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of high foaming agents, in particular to a high foaming agent based on an amino acid surfactant. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, green and environmental protection has become the main theme of people's lives. Surfactants, as one of the indispensable elements in daily life, have attracted much attention in recent years, and higher requirements have also been put forward, such as lower cost and higher safety. Bio-based surfactants are amphiphilic surfactants that use biological or biomass as raw materials, with renewable natural oils in nature as hydrophobic tails and natural compounds (such as small molecule sugars, amino acids, etc.) as hydrophilic heads. They have the advantages of good biodegradability, low toxicity, high biocompatibility, and abundant raw material sources. However, the cost of using bio-based surfactants is relatively high. In order to control costs, they are often used as auxiliary surfactants.

[0003] Alkyl glycoside sulfosuccinate salts are based on alkyl glycosides and incorporate two hydrophilic groups, carboxyl and sulfonic acid groups. This retains the inherent safety and mildness of alkyl glycosides while enhancing their water solubility and hard water resistance. Compared to amino acid surfactants, alkyl glycoside sulfosuccinate salts are lower in cost and offer advantages such as high biocompatibility, excellent compounding effects, and a wide range of applications. N-fatty acyl amino acid surfactants tend to be alkaline. When used with some whitening products, they can disrupt the molecular structure of the active ingredients in these products, thereby reducing their effectiveness. Alkyl glycoside sulfosuccinate salts are weakly acidic. When combined with amino acid surfactants, they can lower the pH of the system, allowing them to be used with a variety of products without compromising their effectiveness. Combining the two also, to a certain extent, avoids skin damage caused by high or low pH values.

[0004] Foam is often used as a key indicator of surfactant performance. Foaming power, foam stability, and foam fineness are indicators of surfactant performance. Studies have shown that foaming surfactants outperform solution-based surfactants in both cleaning and sterilization performance. Consequently, foam-based products like foaming hand soaps are gaining popularity among consumers.

[0005] Generally, amino acid surfactants are not resistant to hard water and have poor foaming power, foam stability, and foam fineness in hard water. Therefore, improving the foaming power, foam stability, and foam fineness of amino acid surfactants in hard water through compounding is of great significance for the widespread application of bio-based surfactants. Summary of the Invention

[0006] The purpose of the present invention is to provide a high foaming agent based on an amino acid surfactant in view of the deficiencies in the prior art.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0008] The invention provides a high foaming agent based on an amino acid surfactant, which comprises the following components by mass fraction: 10-35% of alkyl glycoside sulfosuccinate salt, 10-25% of an amino acid surfactant, and the balance being water.

[0009] Preferably, the composition comprises the following components by mass fraction: 15-30% of alkyl glycoside sulfosuccinate salt, 15-20% of amino acid surfactant, and the balance being water.

[0010] Preferably, the composition comprises the following components by mass fraction: 20-25% of alkyl glycoside sulfosuccinate salt, 17-19% of amino acid surfactant, and the balance of water.

[0011] Preferably, the alkyl glycoside sulfosuccinate salt comprises one or more of alkyl glycoside sulfosuccinate monoester salt, alkyl glycoside sulfosuccinate diester salt, alkyl glycoside sulfosuccinate triester salt and alkyl glycoside sulfosuccinate tetraester salt.

[0012] Preferably, the structural formula of the alkyl glycoside sulfosuccinate monoester salt is:

[0013]

[0014] The structural formula of the alkyl glycoside sulfosuccinate diester salt is:

[0015]

[0016] The structural formula of the alkyl glycoside sulfosuccinate triester salt is:

[0017]

[0018] The structural formula of the alkyl glycoside sulfosuccinate tetraester salt is:

[0019]

[0020] wherein R is independently a fatty acid having 12 to 14 carbon atoms, and n is independently 1.2 to 1.4.

[0021] Preferably, the amino acid surfactant comprises one or more of sodium lauroyl sarcosinate, sodium lauroyl glutamate, sodium cocoyl alanine and sodium cocoyl methyl taurate.

[0022] The beneficial effects of the present invention include the following:

[0023] 1) The amino acid surfactant-based high-foaming agent of the present invention is compounded with an alkyl glycoside sulfosuccinate salt and an amino acid surfactant. It has high biocompatibility, is easily degradable, and is skin-friendly and non-irritating. By rationally controlling the compounding ratio, the high-foaming agent has high foaming power and foam stability. The viscosity of the diluted system is low (no more than 20 mPa·s). It can be compounded with a variety of substances and is widely used in products such as foam detergents, facial cleansers, and body washes.

[0024] 2) The amino acid surfactant-based high foaming agent of the present invention not only improves the foaming performance of traditional amino acid surfactants, but also improves the hard water resistance of amino acid surfactants; compared with traditional amino acid surfactants, alkyl glycoside sulfosuccinate salts have lower costs, reducing the use cost of amino acid surfactant formulas. DETAILED DESCRIPTION

[0025] The invention provides a high foaming agent based on an amino acid surfactant, which comprises the following components by mass fraction: 10-35% of alkyl glycoside sulfosuccinate salt, 10-25% of an amino acid surfactant, and the balance being water.

[0026] The high foaming agent based on amino acid surfactant of the present invention preferably comprises the following components, calculated by mass fraction: 15-30% of alkyl glycoside sulfosuccinate salt, 15-20% of amino acid surfactant, and the balance is water; further preferably comprises the following components: 20-25% of alkyl glycoside sulfosuccinate salt, 17-19% of amino acid surfactant, and the balance is water.

[0027] In the present invention, the alkyl glycoside sulfosuccinate salt preferably comprises one or more of alkyl glycoside sulfosuccinate monoester salt, alkyl glycoside sulfosuccinate diester salt, alkyl glycoside sulfosuccinate triester salt and alkyl glycoside sulfosuccinate tetraester salt.

[0028] In the present invention, the structural formula of the alkyl glycoside sulfosuccinate monoester salt is preferably:

[0029]

[0030] The structural formula of the alkyl glycoside sulfosuccinate diester salt is preferably:

[0031]

[0032] The structural formula of the alkyl glycoside sulfosuccinate triester salt is preferably:

[0033]

[0034] The structural formula of the tetraalkyl sulfosuccinate salt is preferably:

[0035]

[0036] Among them, R is preferably independently a fatty acid with 12 to 14 carbon atoms; n is preferably independently 1.2 to 1.4, more preferably 1.3.

[0037] In the present invention, the preparation method of the alkyl glycoside sulfosuccinate salt preferably comprises: dispersing alkyl glycoside and maleic anhydride in squalane (the mass ratio of alkyl glycoside to squalane is 1:1-2) under a nitrogen atmosphere, carrying out an esterification reaction, cooling to room temperature after the reaction, and standing overnight to separate squalane and the intermediate; under a nitrogen atmosphere, adding a sodium sulfite solution dropwise to the intermediate, reacting at 50°C for 2h, to obtain the alkyl glycoside sulfosuccinate salt;

[0038] The mass fraction of the sodium sulfite solution is preferably 15-25%, more preferably 20%; the dropping rate is preferably 30-50 g / s, more preferably 35-40 g / s; the molar ratio of sodium sulfite to maleic anhydride in the sodium sulfite solution is preferably 1.03-1.3:1, more preferably 1.1-1.2:1;

[0039] The conditions for the esterification reaction are preferably shown in Table 1.

[0040] Table 1 Esterification conditions of alkyl glycoside sulfosuccinate

[0041] Alkyl glycoside sulfosuccinate <![CDATA[n 烷基糖苷 :n 马来酸酐 (molar ratio)]]> Temperature / ℃ Time / h Alkyl glycoside sulfosuccinate monoester salt 1：1 90 1 Alkyl glycoside sulfosuccinate diester salt 1：2 105 2 Alkyl glycoside sulfosuccinate triester salt 1：3 120 3 Alkyl glycoside sulfosuccinate tetraester salt 1：4 140 4

[0042] In the present invention, the amino acid surfactant preferably comprises one or more of sodium lauroyl sarcosinate, sodium lauroyl glutamate, sodium cocoyl alanine and sodium cocoyl methyl taurate.

[0043] The technical solutions provided by the present invention are described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0044] Example 1

[0045] The alkyl glycoside sulfosuccinate salt used in this embodiment is an alkyl glycoside sulfosuccinate monoester salt, and its structural formula is: Wherein n=1.3, R is a fatty acid with 12 carbon atoms.

[0046] The preparation method of alkyl glycoside sulfosuccinate salt is as follows: under a nitrogen atmosphere, an alkyl glycoside (degree of polymerization 1.3, carbon number 12) and maleic anhydride are mixed in a molar ratio of 1:1 and dispersed in squalane (the mass ratio of alkyl glycoside to squalane is 1:1), and an esterification reaction is carried out at 90°C for 1 hour. After the reaction is completed, the mixture is cooled to room temperature and allowed to stand overnight to separate the squalane and the intermediate. Then, a 20% mass fraction sodium sulfite solution is added dropwise to the intermediate (the molar ratio of sodium sulfite to maleic anhydride in the sodium sulfite solution is 1.05:1) at a rate of 35 g / s, and the mixture is reacted at 50°C for 2 hours under a nitrogen atmosphere to obtain the alkyl glycoside sulfosuccinate salt.

[0047] The high foaming agent based on amino acid surfactant comprises, by mass fraction, 25% of alkyl glycoside sulfosuccinate, 15% of sodium lauroyl sarcosinate, and the balance of water.

[0048] Example 2

[0049] The alkyl glycoside sulfosuccinate salt used in this embodiment is an alkyl glycoside sulfosuccinate diester salt, and its structural formula is: Wherein n=1.2, R is a fatty acid with 14 carbon atoms.

[0050] The preparation method of alkyl glycoside sulfosuccinate is as follows: under a nitrogen atmosphere, an alkyl glycoside (degree of polymerization of 1.2, carbon number 14) and maleic anhydride are mixed in a molar ratio of 1:2 and dispersed in squalane (the mass ratio of alkyl glycoside to squalane is 1:1.5), and an esterification reaction is carried out at 105°C for 2 hours. After the reaction is completed, it is cooled to room temperature and allowed to stand overnight to separate the squalane and the intermediate. Then, a 20% mass fraction sodium sulfite solution is added dropwise to the intermediate (the molar ratio of sodium sulfite to maleic anhydride in the sodium sulfite solution is 1.03:1) at a rate of 40 g / s, and the mixture is reacted at 50°C for 2 hours under a nitrogen atmosphere to obtain the alkyl glycoside sulfosuccinate.

[0051] The high foaming agent based on amino acid surfactant comprises, by mass fraction, 25% of alkyl glycoside sulfosuccinate, 15% of sodium lauroyl sarcosinate, and the balance of water.

[0052] Example 3

[0053] The alkyl glycoside sulfosuccinate salt used in this embodiment is an alkyl glycoside sulfosuccinate triester salt, and its structural formula is: Wherein n=1.3, R is a fatty acid with 14 carbon atoms.

[0054] The preparation method of alkyl glycoside sulfosuccinate triester salt is as follows: under a nitrogen atmosphere, an alkyl glycoside (degree of polymerization 1.3, carbon number 14) and maleic anhydride are mixed in a molar ratio of 1:3 and dispersed in squalane (the mass ratio of alkyl glycoside to squalane is 1:1.5), and an esterification reaction is carried out at 120°C for 3 hours. After the reaction is completed, it is cooled to room temperature and allowed to stand overnight to separate the squalane and the intermediate. Then, a 20% mass fraction sodium sulfite solution is added dropwise to the intermediate (the molar ratio of sodium sulfite to maleic anhydride in the sodium sulfite solution is 1.1:1) at a rate of 45g / s, and the mixture is reacted at 50°C for 2 hours under a nitrogen atmosphere to obtain the alkyl glycoside sulfosuccinate triester salt.

[0055] The high foaming agent based on amino acid surfactant comprises, by mass fraction, 25% of alkyl glycoside sulfosuccinate, 15% of sodium lauroyl sarcosinate, and the balance of water.

[0056] Example 4

[0057] The alkyl glycoside sulfosuccinate salt used in this embodiment is alkyl glycoside sulfosuccinate tetraester salt, and the structural formula is: Wherein n=1.4, R is a fatty acid with 12 carbon atoms.

[0058] The preparation method of alkyl glycoside sulfosuccinate tetraester salt is as follows: under a nitrogen atmosphere, an alkyl glycoside (degree of polymerization 1.4, carbon number 12) and maleic anhydride are mixed in a molar ratio of 1:4 and dispersed in squalane (the mass ratio of alkyl glycoside to squalane is 1:2), and an esterification reaction is carried out at 140°C for 4 hours. After the reaction is completed, it is cooled to room temperature and allowed to stand overnight to separate the squalane and the intermediate. Then, a 20% mass fraction sodium sulfite solution is added dropwise to the intermediate (the molar ratio of sodium sulfite to maleic anhydride in the sodium sulfite solution is 1.2:1) at a rate of 50 g / s, and the reaction is carried out at 50°C under a nitrogen atmosphere for 2 hours to obtain alkyl glycoside sulfosuccinate tetraester salt.

[0059] The high foaming agent based on amino acid surfactant comprises, by mass fraction, 25% of alkyl glycoside sulfosuccinate, 15% of sodium lauroyl sarcosinate, and the balance of water.

[0060] Example 5

[0061] The alkyl glycoside sulfosuccinate salt used in this example is the same as the alkyl glycoside sulfosuccinate salt used in Example 1.

[0062] A high foaming agent based on an amino acid surfactant comprises, by mass fraction, 30% of alkyl glycoside sulfosuccinate, 15% of sodium lauroyl sarcosinate, and the balance being water.

[0063] Example 6

[0064] The alkyl glycoside sulfosuccinate salt used in this example is the same as the alkyl glycoside sulfosuccinate salt used in Example 1.

[0065] A high foaming agent based on an amino acid surfactant, comprising, by mass fraction, 30% of alkyl glycoside sulfosuccinate salt, 15% of sodium cocoyl alanine, and the balance being water.

[0066] Example 7

[0067] The alkyl glycoside sulfosuccinate salt used in this example is the same as the alkyl glycoside sulfosuccinate salt used in Example 1.

[0068] A high foaming agent based on an amino acid surfactant comprises, by mass fraction, 25% of alkyl glycoside sulfosuccinate, 15% of sodium lauroyl glutamate, and the balance being water.

[0069] Comparative Example 1

[0070] The high foaming agent based on amino acid surfactant comprises, by mass fraction, 25% of fatty alcohol polyoxyethylene ether (AEO-9), 15% of sodium lauroyl sarcosinate, and the balance is water.

[0071] Comparative Example 2

[0072] A high foaming agent based on an amino acid surfactant, comprising, by mass fraction, 25% of cocamidopropyl betaine (CAB-30), 15% of sodium lauroyl sarcosinate, and the balance being water.

[0073] Comparative Example 3

[0074] The alkyl glycoside sulfosuccinate salt used in this comparative example is the same as the alkyl glycoside sulfosuccinate salt used in Example 1.

[0075] A high foaming agent based on an amino acid surfactant, comprising, by mass fraction, 25% of alkyl glycoside sulfosuccinate, 15% of sodium cocoyl glycinate, and the balance being water.

[0076] The high-foaming agents from Examples 1-7 and Comparative Examples 1-3 were placed on an overhead stirrer and stirred at 300 rpm for 1 hour. The mixture was then allowed to stand for 1 hour. The high-foaming agents were then diluted with water to a mass fraction of 1% for testing of foaming power, foam stability, and viscosity. The test results are shown in Table 2.

[0077] The viscosity of the diluted high foaming agent at 25°C was measured using an NDJ-78 rotary viscometer (unit II measuring instrument, No. 1 drum).

[0078] The foaming power and foam stability of the diluted high foaming agent are tested according to GB / T 7462-1994. The foaming power is measured by the foam height at 30 seconds, and the foam stability is measured by the ratio of the foam height at 5 minutes to the foam height at 30 seconds.

[0079] Table 2 Performance test results of high foaming agents of Examples and Comparative Examples

[0080]

[0081]

[0082] As can be seen from Table 2, Examples 1 to 4 respectively use alkyl glycoside sulfosuccinate monoester salt, alkyl glycoside sulfosuccinate diester salt, alkyl glycoside sulfosuccinate triester salt, alkyl glycoside sulfosuccinate tetraester salt and sodium lauroyl sarcosinate to form high foaming agents with excellent foam stability and foaming power, among which Example 1 uses alkyl glycoside sulfosuccinate monoester salt to have better foaming power; Examples 1, 5 to 7 use alkyl glycoside sulfosuccinate monoester salt and amino acid surfactant to form high foaming agents with excellent foaming power and foam stability, while Comparative Examples 1 and 2 use other surfactants and amino acid surfactants to form high foaming agents with foaming power and foam stability that are not as good as the examples; Comparative Example 3 uses sodium cocoyl glycinate and alkyl glycoside sulfosuccinate monoester salt to form a precipitate under acidic conditions and cannot foam.

[0083] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A high foaming agent based on an amino acid surfactant, characterized in that: The invention comprises the following components by mass fraction: 10-35% of alkyl glycoside sulfosuccinate salt, 10-25% of amino acid surfactant, and the balance of water.

2. The high foaming agent based on amino acid surfactant according to claim 1, characterized in that The invention comprises the following components by mass fraction: 15-30% of alkyl glycoside sulfosuccinate salt, 15-20% of amino acid surfactant, and the balance of water.

3. The high foaming agent based on amino acid surfactant according to claim 2, characterized in that The invention comprises the following components by mass fraction: 20-25% of alkyl glycoside sulfosuccinate salt, 17-19% of amino acid surfactant, and the balance of water.

4. The high foaming agent based on amino acid surfactant according to any one of claims 1 to 3, characterized in that The alkyl glycoside sulfosuccinate salt comprises one or more of alkyl glycoside sulfosuccinate monoester salt, alkyl glycoside sulfosuccinate diester salt, alkyl glycoside sulfosuccinate triester salt and alkyl glycoside sulfosuccinate tetraester salt.

5. The high foaming agent based on amino acid surfactant according to claim 4, characterized in that The structural formula of the alkyl glycoside sulfosuccinate monoester salt is: The structural formula of the alkyl glycoside sulfosuccinate diester salt is: The structural formula of the alkyl glycoside sulfosuccinate triester salt is: The structural formula of the alkyl glycoside sulfosuccinate tetraester salt is: wherein R is independently a fatty acid having 12 to 14 carbon atoms, and n is independently 1.2 to 1.

4.

6. The high foaming agent based on amino acid surfactant according to any one of claims 1 to 3, characterized in that The amino acid surfactant comprises one or more of sodium lauroyl sarcosinate, sodium lauroyl glutamate, sodium cocoyl alanine and sodium cocoyl methyl taurate.

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