Oil stain removing laundry detergent added with modified saponin and amino acid surfactant and preparation method of oil stain removing laundry detergent

Abstract

The invention provides an oil stain removing laundry detergent added with modified saponin and an amino acid surfactant and a preparation method of the oil stain removing laundry detergent, and belongs to the field of detergent preparation, the oil stain removing laundry detergent comprises a modified plant compound extract, an amino acid type anionic surfactant and deionized water; the modified plant compound extract is a plant compound extract modified by long-chain alkyl siloxane, and the plant compound extract is a mixture obtained by supercritical water extraction of sapindus mukorossi peel and gleditsia sinensis fruit. The prepared oil stain removing laundry detergent has strong oil stain removing and sterilizing effects.

Description

Technical Field

[0001] The invention relates to the field of detergent preparation, and in particular to a strong degreasing laundry liquid added with modified saponin and amino acid surfactant and a preparation method thereof. Background Art

[0002] In daily life, people's clothing often gets stained with oil. This is especially true for workers in certain industries, such as chefs, mechanics, vehicle mechanics, and those involved in the production, processing, and transportation of oil products. These workers often develop heavy oil stains on their clothing during their work, making them difficult to clean. The vast majority of laundry detergents currently sold on the market primarily focus on cleaning sweat and dust from clothing. Even for small amounts of oily food stains, the cleaning effect is poor, leaving noticeable residue after drying. Few laundry detergents are specifically designed to clean the oil-laden clothing worn by workers in industries with long-term exposure to oil products. Summary of the Invention

[0003] The present invention aims to provide a degreasing laundry liquid containing modified saponin and amino acid surfactant and a preparation method thereof. The degreasing laundry liquid provided by the present invention mainly uses natural plant extracts as the active detergent ingredient. By condensing with long-chain alkyl siloxane, long-chain alkyl groups are grafted onto the structure of the active ingredient to increase its hydrophobic and lipophilic properties, thereby achieving a strong degreasing effect.

[0004] A degreasing laundry liquid added with modified saponin and amino acid surfactant, the degreasing laundry liquid comprising a modified plant compound extract, an amino acid anionic surfactant and deionized water;

[0005] The modified plant compound extract is a plant compound extract modified with long-chain alkylsiloxane, and the plant compound extract is a mixed solution obtained by extracting soapberry peel and gleditsia fruit with supercritical water.

[0006] Preferably, the grease-removing laundry detergent comprises: 5 to 30 wt% of a modified plant compound extract, 5 to 15 wt% of an amino acid anionic surfactant, and 60 to 85 wt% of deionized water.

[0007] Preferably, the preparation method of the modified plant compound extract is as follows:

[0008] Step (1), preparing plant compound extract: grind soapberry peel and sapodilla fruit with a mass ratio of (1-5):1 as raw materials, place them in a supercritical water extraction kettle, add deionized water with a mass of 20-30 times that of the raw materials, and heat to 375-380 oC, the pressure reaches 23-25 ​​MPa, stirring at a rate of 60-100 rpm for 0.5-1.5 h, then cooling to room temperature and filtering. The filtrate obtained is the plant compound extract;

[0009] Step (2), adding 10-20 wt% of long-chain alkylsiloxane and 0.5-1.0 wt% of sodium hydroxide to the filtrate obtained in step (1), o C and stirred at a rate of 60-100 rpm for 1.0-3.0 h, cooled to room temperature, and hydrochloric acid (concentration of 37 wt%) was added dropwise under stirring at a rate of 60-100 rpm to adjust the solution pH to 7.0, thereby obtaining the modified plant compound extract. Preferably, the long-chain alkyl siloxane is one of dodecyltriethoxysilane, hexadecyltriethoxysilane, and octadecyltriethoxysilane.

[0010] Preferably, the amino acid type anionic surfactant is one of sodium N-butyryl-N-butyl laurate, potassium N-butyryl-N-butyl laurate, and N-butyryl-N-butyl laurate alkyl ester; in the N-butyryl-N-butyl laurate alkyl ester, the alkyl group is a C2~C12 straight-chain alkyl group.

[0011] The preparation method of a degreasing laundry liquid containing modified saponin and amino acid surfactant in the present invention is as follows:

[0012] At room temperature, deionized water is first added into a stirring kettle, and an amino acid anionic surfactant is added dropwise at a rate of 60 to 120 drops per minute under a stirring condition of 100 to 300 rpm, and then the modified plant compound extract is added dropwise at a rate of 30 to 60 drops per minute under a stirring condition of 300 to 500 rpm. After the addition is completed, a strong degreasing laundry detergent is obtained.

[0013] The grease-removing laundry detergent prepared by the present invention and the preparation method thereof have the following beneficial effects:

[0014] 1) Innovative supercritical water extraction of saponins from soapberry peel and saponin fruit. Utilizing the high solubility and diffusivity of supercritical water, a high saponin extraction rate was achieved to prepare a plant-based compound extract.

[0015] 2) By adding long-chain alkyl siloxane to the plant compound extract, a hydrolysis reaction first occurs under the action of sodium hydroxide alkaline catalyst, and then a condensation reaction occurs with the phenolic hydroxyl group in the saponin structure, thereby grafting the long-chain alkyl group onto the saponin structure, enhancing its hydrophobicity and lipophilicity, thereby achieving a strong oil stain removal function; the sodium chloride generated by hydrochloric acid neutralization can play a role in thickening, antibacterial, and color fixing in laundry detergent.

[0016] 3) Saponins grafted with long-chain alkyl groups are non-ionic surfactants. When combined with amino acid-type anionic surfactants, they form a complex system that does not produce precipitation or flocculent complexes caused by the strong electrostatic effects that exist when anionic and cationic surfactants form a complex system. Therefore, the laundry detergent system is stable and the oil removal performance is significantly improved.

[0017] 3) Saponins grafted with long-chain alkyl groups have bactericidal properties, making the degreasing laundry detergent also have bactericidal functions.

[0018] 4) The main ingredients of the grease-removing laundry detergent are natural, non-toxic, non-irritating to the skin, easily biodegradable, and environmentally friendly. They also leave little residue after use, thus preventing clothing from turning yellow and hard. The grease-removing laundry detergent has a small number of raw material components, is simple to prepare, and has low production costs. The preparation process produces no three wastes, making it a green and environmentally friendly production process. DETAILED DESCRIPTION

[0019] The technical solutions of the present invention are described in detail below through examples, but the protection scope of the present invention is not limited to the examples.

[0020] Sodium N-butyryl-N-butyl laurate (sodium N-butyryl-N-butyl dodecyl salt), potassium N-butyryl-N-butyl laurate (potassium N-butyryl-N-butyl dodecyl salt), and alkyl N-butyryl-N-butyl laurate (alkyl N-butyryl-N-butyl dodecyl salt) in the following examples were prepared using the method described in the authorized patent application number ZL202310477024.5.

[0021] Example 1

[0022] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 5 g of soapberry peel and 5 g of saponin fruit (mass ratio is 1:1) as raw materials are crushed, placed in a supercritical water extraction kettle, 200 g (20 times the mass of the raw materials) of deionized water are added, and the temperature is raised to 375 o C, the pressure reaches 23 MPa, stirred at a rate of 60 rpm for 0.5 h, then cooled to room temperature, filtered, and 204 g of filtrate was obtained; step (2), 40.8 g (accounting for 20 wt% of the mass of the filtrate) of dodecyltriethoxysilane and 2.04 g (accounting for 1.0 wt% of the mass of the filtrate) of sodium hydroxide were added to the filtrate obtained in step (1), and the mixture was stirred at a temperature of 50 o C and stirred at a rate of 60 rpm for 1.0 h, cooled to room temperature, and hydrochloric acid (concentration of 37 wt%) was added dropwise at a stirring rate of 60 rpm to make the pH value of the solution 7.0, thereby obtaining the modified plant compound extract.

[0023] Preparation method of degreasing laundry detergent: At room temperature, first add 850 grams (accounting for 85 wt% of the mass of the laundry detergent) of deionized water into a stirring kettle, add 50 grams (accounting for 5 wt% of the mass of the laundry detergent) of amino acid type anionic surfactant N-butyryl-N-butyl sodium laurate at a rate of 60 drops / minute under stirring condition of 100 rpm, and then add 100 grams (accounting for 10 wt% of the mass of the laundry detergent) of the modified plant compound extract prepared above at a rate of 30 drops / minute under stirring condition of 300 rpm. After the addition is completed, a strong degreasing laundry detergent is obtained.

[0024] Example 2

[0025] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 10 g of soapberry peel and 5 g of saponaria fruit (mass ratio is 2:1) as raw materials are crushed, placed in a supercritical water extraction kettle, 450 g (30 times the mass of the raw materials) of deionized water are added, and the temperature is raised to 375 o C, the pressure reaches 25 MPa, stirred at a rate of 80 rpm for 1.0 h, then cooled to room temperature, filtered, and 459 g of filtrate was obtained; step (2), 45.9 g (accounting for 10 wt% of the mass of the filtrate) of hexadecyltriethoxysilane and 2.30 g (accounting for 0.5 wt% of the mass of the filtrate) of sodium hydroxide were added to the filtrate obtained in step (1), and the mixture was stirred at a temperature of 80 o C and stirred at a rate of 60 rpm for 3.0 h, cooled to room temperature, and hydrochloric acid (concentration of 37 wt%) was added dropwise at a stirring rate of 60 rpm to make the pH value of the solution 7.0, thereby obtaining the modified plant compound extract.

[0026] The preparation method of the strong degreasing laundry detergent is as follows: at room temperature, 600 grams (accounting for 60 wt% of the mass of the laundry detergent) of deionized water are first added to a stirring kettle, and 150 grams (accounting for 15 wt% of the mass of the laundry detergent) of amino acid type anionic surfactant potassium N-butyryl-N-butyl laurate is added dropwise at a rate of 120 drops / minute under stirring conditions at a rate of 300 rpm, and then 250 grams (accounting for 25 wt% of the mass of the laundry detergent) of the modified plant compound extract prepared above is added dropwise at a rate of 60 drops / minute under stirring conditions at a rate of 400 rpm. After the addition is completed, the strong degreasing laundry detergent is obtained.

[0027] Example 3

[0028] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 25 g of soapberry peel and 5 g of saponaria fruit (mass ratio of 5:1) as raw materials are crushed and placed in a supercritical water extraction kettle, 750 g (25 times the mass of the raw materials) of deionized water are added, and the temperature is raised to 378o C, at a temperature of 80 °C and a rate of 70 rpm, for 2.0 h, and then cooled to room temperature. Hydrochloric acid (concentration of 37 wt%) was added dropwise under stirring at a rate of 90 rpm until the pH of the solution reached 7.0, thereby obtaining the modified plant compound extract. o C, at a temperature of 80 °C and a rate of 70 rpm, for 2.0 h, and then cooled to room temperature. Hydrochloric acid (concentration of 37 wt%) was added dropwise under stirring at a rate of 90 rpm until the pH of the solution reached 7.0, thereby obtaining the modified plant compound extract.

[0029] Preparation method of oil-stain removing laundry detergent: At room temperature, 650 g (65 wt% of the laundry detergent) of deionized water was first added to a stirring kettle, and then 50 g (5 wt% of the laundry detergent) of amino acid anionic surfactant N-butyryl-N-butyl lauryl ethyl ester was added dropwise at a rate of 80 drops / min under stirring at a rate of 200 rpm. Subsequently, 300 g (30 wt% of the laundry detergent) of the modified plant compound extract prepared above was added dropwise at a rate of 50 drops / min under stirring at a rate of 400 rpm. After the dropwise addition was completed, a strong oil-stain removing laundry detergent was obtained.

[0030] Example 4

[0031] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 20 g of soapberry peel and 5 g of soapnut fruit (mass ratio of 4:1) were ground and placed in a supercritical water extraction kettle. 575 g (23 times the mass of the raw materials) of deionized water was added, and the temperature was raised to 376 o C, at a temperature of 80 °C and a rate of 70 rpm, for 2.0 h, and then cooled to room temperature. Hydrochloric acid (concentration of 37 wt%) was added dropwise under stirring at a rate of 90 rpm until the pH of the solution reached 7.0, thereby obtaining the modified plant compound extract. o C, at a temperature of 80 °C and a rate of 70 rpm, for 2.0 h, and then cooled to room temperature. Hydrochloric acid (concentration of 37 wt%) was added dropwise under stirring at a rate of 90 rpm until the pH of the solution reached 7.0, thereby obtaining the modified plant compound extract.

[0032] The preparation method of the degreasing laundry detergent is as follows: at room temperature, 800 grams (accounting for 80 wt% of the mass of the laundry detergent) of deionized water are first added to a stirring kettle, and 150 grams (accounting for 15 wt% of the mass of the laundry detergent) of an amino acid anionic surfactant N-butyryl-N-butyl lauryl laurate is added dropwise at a rate of 120 drops / minute under stirring conditions at a rate of 250 rpm, and then 50 grams (accounting for 5 wt% of the mass of the laundry detergent) of the modified plant compound extract prepared above is added dropwise at a rate of 50 drops / minute under stirring conditions at a rate of 350 rpm. After the addition is completed, a strong degreasing laundry detergent is obtained.

[0033] Example 5

[0034] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 15 g of soapberry peel and 5 g of saponaria fruit (mass ratio is 3:1) as raw materials are crushed, placed in a supercritical water extraction kettle, 400 g (20 times the mass of the raw materials) of deionized water are added, and the temperature is raised to 378 o C, the pressure reaches 23.8 MPa, stirred at a rate of 100 rpm for 1.0 h, then cooled to room temperature, filtered, and 406 g of filtrate was obtained; step (2), 60.9 g (accounting for 15 wt% of the mass of the filtrate) of octadecyltriethoxysilane and 2.03 g (accounting for 0.5 wt% of the mass of the filtrate) of sodium hydroxide were added to the filtrate obtained in step (1), and the mixture was stirred at a temperature of 80 o C and stirred at a rate of 80 rpm for 3.0 h, cooled to room temperature, and hydrochloric acid (concentration of 37 wt%) was added dropwise at a stirring rate of 60 rpm to make the pH value of the solution 7.0, thereby obtaining the modified plant compound extract.

[0035] The preparation method of the degreasing laundry detergent is as follows: at room temperature, 750 g (accounting for 75 wt% of the mass of the laundry detergent) of deionized water is first added to a stirring kettle, and 80 g (accounting for 8 wt% of the mass of the laundry detergent) of an amino acid anionic surfactant N-butyryl-N-butyl laurate is added dropwise at a rate of 100 drops / min under stirring conditions at a rate of 300 rpm, and then 170 g (accounting for 17 wt% of the mass of the laundry detergent) of the modified plant compound extract prepared above is added dropwise at a rate of 30 drops / min under stirring conditions at a rate of 500 rpm. After the addition is completed, a strong degreasing laundry detergent is obtained.

[0036] Comparative Example 1

[0037] The raw material ratios and operating conditions in Example 3 were followed, but without improving the hydrophobic and lipophilic properties of saponins. Only the plant compound extract was prepared, ie, no long-chain alkyl siloxane, sodium hydroxide, and hydrochloric acid were added.

[0038] Preparation of plant compound extract: 25 g of soapberry peel and 5 g of saponin fruit (mass ratio of 5:1) were crushed as raw materials, placed in a supercritical water extraction kettle, 750 g of deionized water (25 times the mass of the raw materials) was added, and the temperature was raised to 378 o C, the pressure reached 25 MPa, stirred at 100 rpm for 1.5 h, then cooled to room temperature and filtered to obtain 763 g of filtrate. The preparation method of the laundry detergent was the same as that of Example 3.

[0039] Comparative Example 2

[0040] Other raw material ratios and operating conditions were the same as those in Example 3, except that the mass percentage of long-chain alkylsiloxane in the filtrate was reduced outside the preferred range.

[0041] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 25 g of soapberry peel and 5 g of saponaria fruit (mass ratio of 5:1) as raw materials are crushed and placed in a supercritical water extraction kettle, 750 g (25 times the mass of the raw materials) of deionized water are added, and the temperature is raised to 378 o C, the pressure reaches 25 MPa, stirred at a rate of 100 rpm for 1.5h, then cooled to room temperature, filtered, and 763g of filtrate was obtained; step (2), 38.2g (5 wt% of the mass of the filtrate) of octadecyltriethoxysilane and 6.11g (0.8 wt% of the mass of the filtrate) of sodium hydroxide were added to the filtrate obtained in step (1), and the mixture was stirred at a temperature of 60 o The mixture was stirred at 70 rpm for 2.0 h at 40°C, cooled to room temperature, and hydrochloric acid (37 wt %) was added dropwise at 90 rpm to adjust the pH of the solution to 7.0, thereby obtaining the modified plant compound extract. The preparation method of the degreasing laundry detergent was the same as that in Example 3.

[0042] Comparative Example 3

[0043] Other raw material ratios and operating conditions were the same as those in Example 3, except that the mass percentage of long-chain alkylsiloxane in the filtrate was increased outside the preferred range.

[0044] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 25 g of soapberry peel and 5 g of saponaria fruit (mass ratio of 5:1) as raw materials are crushed and placed in a supercritical water extraction kettle, 750 g (25 times the mass of the raw materials) of deionized water are added, and the temperature is raised to 378 oC, the pressure reaches 25 MPa, stirred at a rate of 100 rpm for 1.5 hours, then cooled to room temperature, filtered, and 763 grams of filtrate were obtained; step (2) 190.8 grams (accounting for 25 wt% of the mass of the filtrate) of octadecyltriethoxysilane and 6.11 grams (accounting for 0.8 wt% of the mass of the filtrate) of sodium hydroxide were added to the filtrate obtained in step (1), and the mixture was stirred at a temperature of 60 o The mixture was stirred at 70 rpm for 2.0 h at 40°C, cooled to room temperature, and hydrochloric acid (37 wt %) was added dropwise at 90 rpm to adjust the pH of the solution to 7.0, thereby obtaining the modified plant compound extract. The preparation method of the strong degreasing laundry detergent was the same as in Example 3.

[0045] Comparative Example 4

[0046] The preparation method of the modified plant compound extract is the same as that in Example 3, except that the order of addition is changed in the preparation method of the laundry detergent: at room temperature, 300 g (30 wt% of the mass of the laundry detergent) of the modified plant compound extract prepared above is first added to a stirred tank, and then 650 g (65 wt% of the mass of the laundry detergent) of deionized water is added dropwise at a rate of 50 drops / min under stirring conditions at a rate of 400 rpm, and finally 50 g (5 wt% of the mass of the laundry detergent) of amino acid anionic surfactant N-butyryl-N-butyl laurate is added dropwise at a rate of 80 drops / min under stirring conditions at a rate of 200 rpm. After the addition is completed, a strong degreasing laundry detergent is obtained.

[0047] Comparative Example 5

[0048] The other raw material ratios and operating conditions were the same as those in Example 3, but supercritical water extraction was not performed and only the o C. Extraction under normal pressure:

[0049] Preparation method of modified plant compound extract: Step (1), preparation of plant compound extract: 25 g of soapberry peel and 5 g of saponaria fruit (mass ratio of 5:1) as raw materials are crushed and placed in a three-necked flask with a condensation reflux device, 750 g of deionized water (25 times the mass of the raw materials) is added, and the temperature is raised to 100 o C, normal pressure, stirring at a rate of 100 rpm for 1.5 h, then cooling to room temperature, filtering, and obtaining 753 g of filtrate; step (2), adding 113.0 g (accounting for 15 wt% of the mass of the filtrate) of octadecyltriethoxysilane and 6.02 g (accounting for 0.8 wt% of the mass of the filtrate) of sodium hydroxide to the filtrate obtained in step (1), and stirring at a temperature of 60 oThe mixture was stirred at 70 rpm for 2.0 h at 40°C, cooled to room temperature, and hydrochloric acid (37 wt %) was added dropwise at 90 rpm to adjust the pH of the solution to 7.0, thereby obtaining the modified plant compound extract. The preparation method of the degreasing laundry detergent was the same as that in Example 3.

[0050] Comparative Example 6

[0051] The other raw material ratios and operating conditions were the same as those in Example 3, except that the catalyst type in the modification process of the plant compound extract was changed, and the base catalyst sodium hydroxide was replaced by the acid catalyst hydrochloric acid.

[0052] Preparation method of modified plant compound extract: Step (1) Preparation of plant compound extract: 25 g of soapberry peel and 5 g of saponaria fruit (mass ratio of 5:1) as raw materials are crushed and placed in a supercritical water extraction kettle, 750 g of deionized water (25 times the mass of the raw materials) is added, and the temperature is raised to 378 o C, the pressure reaches 25 MPa, stirred at a rate of 100 rpm for 1.5 h, then cooled to room temperature, filtered, and 763 g of filtrate was obtained; step (2), 114.5 g (15 wt% of the mass of the filtrate) of octadecyltriethoxysilane and 16.51 g (HCl accounts for 0.8 wt% of the mass of the filtrate) of hydrochloric acid (concentration 37 wt%) were added to the filtrate obtained in step (1), and the mixture was stirred at a temperature of 60 o The mixture was stirred at 70 rpm for 2.0 h at 40°C, cooled to room temperature, and a 30 wt% sodium hydroxide aqueous solution was added dropwise at a rate of 60 drops / min while stirring at 90 rpm to a pH of 7.0, thereby obtaining the modified plant compound extract. The degreasing laundry detergent was prepared in the same manner as in Example 3.

[0053] Comparative Example 7

[0054] The other raw material ratios and operating conditions were the same as in Example 3. The type of amino acid anionic surfactant in the degreasing laundry detergent raw materials was changed, and N-butyryl-N-butyl laurate was replaced with sodium 2-dioctadecylamine hexadecanoate (prepared according to the authorized patent application number ZL 202210885538.X).

[0055] The preparation method of the modified plant compound extract is the same as that in Example 3. The preparation method of the strong degreasing laundry detergent is as follows: at room temperature, 650 g (65 wt% of the mass of the laundry detergent) of deionized water is first added to a stirred tank, and 50 g (5 wt% of the mass of the laundry detergent) of an amino acid anionic surfactant 2-bis(octadecylamine) sodium hexadecanoate is added dropwise at a rate of 80 drops / min under stirring conditions at a rate of 200 rpm, and then 300 g (30 wt% of the mass of the laundry detergent) of the modified plant compound extract prepared above is added dropwise at a rate of 50 drops / min under stirring conditions at a rate of 400 rpm. After the addition is completed, a strong degreasing laundry detergent is obtained.

[0056] Comparative Example 8

[0057] Taking Example 3 as a reference, the modified plant compound extract therein was replaced with a C12 alkyl glycoside modified product.

[0058] Modification of C12 alkyl glycoside: 30 g of C12 alkyl glycoside, 60 g of octadecyltriethoxysilane, 7.4 g of sodium hydroxide solution and 240 g of deionized water were added into a three-necked flask with a cooling reflux device (mass ratio of 1:2:0.25:8), stirred at 90 °C and 100 rpm for 4 h, cooled to room temperature, and hydrochloric acid (concentration of 37 wt%) was added dropwise at a stirring rate of 100 rpm to make the pH value of the solution 7.0. The addition and stirring were stopped to obtain the modified alkyl glycoside.

[0059] The preparation method of the degreasing laundry detergent is as follows: at room temperature, 650 g (accounting for 65 wt% of the mass of the laundry detergent) of deionized water is first added to a stirring kettle, and 50 g (accounting for 5 wt% of the mass of the laundry detergent) of an amino acid anionic surfactant N-butyryl-N-butyl laurate is dropwise added at a rate of 80 drops / min under a stirring condition of 200 rpm, and then 300 g (accounting for 30 wt% of the mass of the laundry detergent) of the above-prepared C12 alkyl glycoside modified product is dropwise added at a rate of 50 drops / min under a stirring condition of 400 rpm. After the addition is completed, a strong degreasing laundry detergent is obtained.

[0060] Performance testing:

[0061] The test was conducted according to the national standard GB / T 13174-2021 "Determination of detergency and cyclic washing performance of detergents for clothing", and carbon black oil-stained cloth, sebum-stained cloth, and protein-stained cloth were selected. The test results are shown in Table 1:

[0062] Table 1

[0063] According to the test method in the light industry standard QB / T 2850-2007 "Antibacterial and antibacterial detergents", the laundry detergents prepared in Examples 1-5 and Comparative Examples 1-8 were tested for performance. The results are shown in Table 2:

[0064] Table 2

[0065] From the detergency ratio and bactericidal rate test results of each sample in Table 1 and Table 2, it can be seen that the laundry detergents prepared in Examples 1-5 and Comparative Examples 1-8 have higher detergency for the three national standard dirty cloths than the national standard laundry detergent, and the laundry detergents prepared in Examples 1-5 have stronger detergency than that of Comparative Examples 1-8. The bactericidal rates of the laundry detergents prepared in Examples 1-5 are higher than those of Comparative Examples 1-8. The laundry detergents provided by the present invention have more excellent bactericidal performance.

[0066] The laundry detergents prepared in Examples 1-5 have a higher detergency ratio for carbon black oil-stained cloth than for sebum-stained cloth, which proves that the laundry detergents prepared by the method of the present invention are more suitable for use as strong degreasing laundry detergents. The detergency ratio of the laundry detergent prepared in Comparative Example 1 is lower than that in the embodiment, mainly because the hydrophobic and lipophilic properties of saponins were not improved, only the preparation of the plant compound extract was carried out, and long-chain alkyl siloxane, sodium hydroxide and hydrochloric acid were not added, the hydrophobic and lipophilic properties were poor, and the laundry detergent had poor grease removal ability; and because there was no sodium chloride, the bactericidal rate was low; in Comparative Example 2, the amount of long-chain alkyl siloxane used was too small, and the long-chain hydrophobic groups grafted on the saponin structure were small, the hydrophobic and lipophilic properties were not significantly improved, and the grease removal performance was poor; in Comparative Example 3, the amount of long-chain alkyl siloxane used was too large, and the long-chain hydrophobic groups grafted on the saponin structure were large, and the hydrophobicity was too strong, resulting in the modified saponin being difficult to dissolve in water, the laundry detergent system being unstable, and turbidity and stratification occurring; since there are fewer remaining hydroxyl groups on the saponin structure, the bactericidal performance is poor; when preparing the laundry detergent in Comparative Example 4, the order of adding materials was changed, and deionized water was added dropwise to the modified plant compound extract with stronger hydrophobicity, which is easy to cause The ingredients are not fully dissolved, the system is unstable, and turbidity and stratification occur; in Comparative Example 5, the supercritical water extraction technology is not used to prepare the plant compound extract, and only the conventional hot water extraction method is used, and the saponin extraction rate is low, so the final prepared laundry detergent has less degreasing active ingredients, a low detergency ratio, and poor detergency; due to the low saponin content, the bactericidal performance is the worst; in Comparative Example 6, the catalyst type in the modification process of the plant compound extract is changed from base catalysis to acid catalysis, and the condensation reaction of long-chain alkyl siloxane and phenolic hydroxyl group is changed to the condensation reaction of long-chain alkyl siloxane and alcoholic hydroxyl group, and the modified product changes, thereby reducing the decontamination and bactericidal ability of the compound system; in Comparative Examples 7 and 8, the type of amino acid anionic surfactant and the modified material of the plant compound extract are replaced with a C12 alkyl glycoside modified material, respectively, resulting in a change in the raw materials in the compound system, which reduces the synergistic function of the raw material compounding, resulting in a reduction in its decontamination and bactericidal ability. The greater the decontamination power ratio of the laundry detergent prepared in Examples 1-5 to the carbon black oil-stained cloth, the stronger the oil stain removal ability of the laundry detergent.

[0067] In summary, it can be shown that the strong degreasing laundry detergent prepared by the method of the present invention has more excellent degreasing ability and bactericidal performance.

[0068] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to the form and details without departing from the spirit and scope of the present invention.

Claims

1. A degreasing laundry detergent containing modified saponin and amino acid surfactant, characterized in that: The grease-removing laundry detergent comprises a modified plant compound extract, an amino acid anionic surfactant and deionized water; The modified plant compound extract is a plant compound extract modified with long-chain alkylsiloxane, and the plant compound extract is a mixed solution obtained by extracting soapberry peel and gleditsia fruit with supercritical water.

2. The degreasing laundry detergent according to claim 1, characterized in that The grease-removing laundry liquid comprises: 5-30 wt% of a modified plant compound extract, 5-15 wt% of an amino acid anionic surfactant, and 60-85 wt% of deionized water.

3. The degreasing laundry detergent according to claim 2, characterized in that The preparation method of the modified plant compound extract is as follows: Step (1), crushing the soapberry peel and the gleditsia fruit in a mass ratio of (1-5):1 as raw materials, placing them in a supercritical water extraction kettle, adding deionized water 20-30 times the mass of the raw materials, and heating to 375-380 o C, the pressure reaches 23-25 ​​MPa, stirring at a rate of 60-100 rpm for 0.5-1.5 h, then cooling to room temperature and filtering to obtain the filtrate which is the plant compound extract; Step (2), adding 10-20 wt% of long-chain alkylsiloxane and 0.5-1.0 wt% of sodium hydroxide to the filtrate obtained in step (1), o C temperature and stirring at a speed of 60-100 rpm for 1.0-3.0 h, cooling to room temperature, and adding hydrochloric acid dropwise at a stirring speed of 60-100 rpm to make the pH value of the solution 7.0 to obtain the modified plant compound extract.

4. The degreasing laundry detergent according to claim 1, characterized in that The long-chain alkylsiloxane is one of dodecyltriethoxysilane, hexadecyltriethoxysilane and octadecyltriethoxysilane.

5. The degreasing laundry detergent according to claim 1, characterized in that The amino acid type anionic surfactant is one of sodium N-butyryl-N-butyl laurate, potassium N-butyryl-N-butyl laurate, and alkyl N-butyryl-N-butyl laurate; In the N-butyryl-N-butyl laurate alkyl ester, the alkyl group is a C2-C12 straight-chain alkyl group.

6. The method for preparing the degreasing laundry detergent according to any one of claims 1 to 5, characterized in that: The steps include: At room temperature, deionized water is first added into a stirring kettle, and an amino acid anionic surfactant is dropwise added at a rate of 60 to 120 drops per minute under a stirring condition of 100 to 300 rpm, and then a modified plant compound extract is dropwise added at a rate of 30 to 60 drops per minute under a stirring condition of 300 to 500 rpm. After the addition is completed, a degreasing laundry detergent is obtained.

Images