A kind of clothing oil stain detergent and preparation method thereof

Abstract

The invention discloses a kind of clothing oil stain detergent and preparation method thereof, and belongs to the technical field of detergent. According to weight parts, the following components are included: 1-3 parts of tert-butylhydroquinone, 5-10 parts of polyoxyethylene fatty alcohol ether, 5-10 parts of sodium lauryl polyether sulfate, 3-6 parts of sodium lignin sulfonate, 8-12 parts of palm alcohol, 6-12 parts of sodium carbonate, 0.02-0.06 parts of silver ion antibacterial agent, 6-12 parts of grapefruit ketone, 1-3 parts of limonamine alcohol, 3-8 parts of ethanolamine, 10-15 parts of coconut oil fatty acid, 30-50 parts of water, 3-5 parts of 1,2-propylene glycol, and 2-5 parts of auxiliary agent. The clothing oil stain detergent provided by the present invention has mild nature, low irritation, and will not cause damage to human skin and clothing; sodium lignin sulfonate and sodium carbonate can improve the quality of detergent, have excellent cleaning adhesion and the effect of penetration and dissolution of oil stains on the surface of clothing, and effectively improve the oil stain treatment speed. Tert-butylhydroquinone, polyoxyethylene fatty alcohol ether and silver ion antibacterial agent can not only remove oil stains but also have antibacterial effect.

Description

Technical Field

[0001] The present invention relates to the technical field of civil detergents, and more particularly to a detergent for removing oil stains from clothing and a preparation method thereof. Background Art

[0002] In daily life, people's clothes are inevitably splashed with oil stains, which affect the appearance of clothes and are difficult to clean. However, the existing commercially available clothing oil stain cleaners have low decontamination ability and are not effective in removing stubborn oil stains on local clothes. Usually, when cleaning these stubborn oil stains, it is necessary to pour dishwashing detergent on the oily area before soaking the clothes, rub them vigorously, put them into the washing machine or washing tub to soak the clothes, and then add laundry detergent, washing powder, etc. to wash them. However, the overall cleaning effect is still unsatisfactory.

[0003] Therefore, how to provide a detergent that can quickly remove stubborn oil stains and has a good cleaning effect is an urgent problem that needs to be solved. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a laundry detergent for oil stains, so as to solve the problems in the prior art of incomplete cleaning of stubborn oil stains on clothes, long cleaning time and low overall cleaning efficiency.

[0005] To achieve the above object, the technical solution of the present invention is:

[0006] A laundry detergent for oil stains, comprising the following components in parts by weight:

[0007] 1-3 parts of tert-butylhydroquinone, 5-10 parts of polyoxyethylene fatty alcohol ether, 5-10 parts of sodium lauryl polyether sulfate, 3-6 parts of sodium lignin sulfonate, 8-12 parts of palmityl alcohol, 6-12 parts of sodium carbonate, 0.02-0.06 parts of silver ion antibacterial agent, 6-12 parts of grapefruit ketone, 1-3 parts of limonamine alcohol, 3-8 parts of ethanolamine, 10-15 parts of coconut oil fatty acid, 30-50 parts of water, 3-5 parts of 1,2-propylene glycol, and 2-5 parts of additives.

[0008] Preferably, the following components are included in parts by weight:

[0009] 2 parts of tert-butylhydroquinone, 8 parts of polyoxyethylene fatty alcohol ether, 8 parts of sodium lauryl polyether sulfate, 5 parts of sodium lignin sulfonate, 10 parts of palm alcohol, 10 parts of sodium carbonate, 0.05 parts of silver ion antibacterial agent, 10 parts of grapefruit ketone, 2 parts of limonamine alcohol, 6 parts of ethanolamine, 12 parts of coconut oil fatty acid, 40 parts of water, 4 parts of 1,2-propylene glycol, and 3 parts of additives.

[0010] Preferably, 0.5-1.5 parts by weight of lipase is also included.

[0011] Preferably, the raw materials for preparing the auxiliary agent include the following components: 1-2 parts of hydrogen peroxide, 50-70 parts of vinylbenzene, 0.2-0.6 parts of dodecyl mercaptan, 2-4 parts of pH regulator, and 20-40 parts of solvent.

[0012] Preferably, the preparation method of the auxiliary agent comprises the following steps:

[0013] 1) Weigh 1-2 parts of hydrogen peroxide, 50-70 parts of vinylbenzene, 0.2-0.6 parts of dodecyl mercaptan, 2-4 parts of pH adjuster, and 20-40 parts of solvent according to weight;

[0014] 2) adding part of vinylbenzene to the solvent, mixing and heating to above 85° C., then adding part of hydrogen peroxide, keeping the temperature for 2-4 minutes to obtain a mixed solution, and continuously stirring; wherein the part of vinylbenzene is 0.2-0.5 times of the total amount of vinylbenzene; and the part of hydrogen peroxide is 0.3-0.5 parts of the total amount of hydrogen peroxide;

[0015] 3) mixing dodecyl mercaptan and the remaining vinylbenzene, and then dropping them into the stirred mixed solution, and after the dropping is completed, heat-insulating for 90-150 minutes;

[0016] 4) Continue to drop the remaining hydrogen peroxide, and after the addition is completed, keep warm for 90-150 minutes;

[0017] 5) After the heat preservation is completed, the temperature is lowered to below 45° C., and the pH of the reaction solution is adjusted to between 7 and 8 with a pH adjuster to obtain an auxiliary agent.

[0018] Preferably, the stirring state is maintained in step 2) to step 5), and the stirring rate is 250-500r / min;

[0019] In step 3), the dropping time is 150-250 minutes;

[0020] In step 4), the dropping time is 90-150 minutes.

[0021] Preferably, the ethanolamine is one of monoethanolamine, diethanolamine or triethanolamine.

[0022] The present invention also provides a method for preparing any of the above-mentioned laundry oil stain detergents, comprising the following steps:

[0023] Step 1: weigh 1-3 parts of tert-butylhydroquinone, 5-10 parts of polyoxyethylene fatty alcohol ether, 5-10 parts of sodium lauryl polyether sulfate, 3-6 parts of sodium lignin sulfonate, 8-12 parts of palmityl alcohol, 6-12 parts of sodium carbonate, 0.02-0.06 parts of silver ion antibacterial agent, 6-12 parts of grapefruit ketone, 1-3 parts of limonamine alcohol, 3-8 parts of ethanolamine, 10-15 parts of coconut oil fatty acid, 0.5-1.5 parts of lipase, 30-50 parts of water, 3-5 parts of 1,2-propylene glycol, and 2-5 parts of additives according to weight parts;

[0024] Step 2: adding part of sodium carbonate to water, stirring to dissolve, then adding 1,2-propylene glycol, heating and stirring, then adding coconut oil fatty acid, stirring and reacting for 30-60 minutes, then adding tert-butylhydroquinone and palmityl alcohol, stirring and reacting for more than 100 minutes, to obtain a mixture A;

[0025] Step 3: Add polyoxyethylene fatty alcohol ether, sodium lauryl polyether sulfate, sodium lignin sulfonate, grapefruit ketone, limonamine alcohol, ethanolamine, auxiliary agent, and remaining sodium carbonate to the obtained mixture A, stir and mix, then add silver ion antibacterial agent and lipase, mix and obtain.

[0026] Preferably, in step 2, the entire stirring and mixing is controlled at a temperature between 60-80°C; in step 3, the temperature is controlled at 50-60°C before adding the silver ion antibacterial agent and lipase, and the silver ion antibacterial agent and lipase are added after the temperature drops to below 40°C.

[0027] The beneficial effects of the present invention are:

[0028] The laundry detergent for oil stains provided by the present invention does not contain any strongly alkaline raw materials as a whole, is mild in nature, has low irritation, and does not cause damage to human skin and clothes; sodium lignin sulfonate and sodium carbonate can improve the quality of the detergent, have excellent cleaning adhesion and the effect of penetrating and dissolving oil stains on the surface of clothes, and effectively improve the speed of oil stain treatment; tert-butylhydroquinone, polyoxyethylene fatty alcohol ether and silver ion antibacterial agent can not only remove oil stains but also have antibacterial effect; in addition, by adding auxiliary agents, the color of clothes can be protected to a certain extent, and clothes of different colors can be prevented from affecting each other during washing; the overall oil stain removal effect is good, and the cleaning time is short. DETAILED DESCRIPTION

[0029] Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without violating the connotation of the present invention, so the present invention is not limited to the specific implementation disclosed below.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] Example 1 Preparation of auxiliary agent

[0032] The following steps are involved:

[0033] Weigh 2 parts of hydrogen peroxide, 65 parts of vinylbenzene, 0.5 parts of dodecyl mercaptan, 4 parts of pH adjuster, and 30 parts of solvent according to weight;

[0034] 2) adding 25 parts of vinylbenzene to the solvent, mixing and heating to 95° C., then adding 0.8 parts of hydrogen peroxide, keeping the temperature for 3 minutes to obtain a mixed solution, and continuously stirring;

[0035] 3) mixing dodecyl mercaptan and the remaining vinylbenzene, and then dropping them into the stirred mixture, the dropping time is controlled within 180 minutes, and after the end, heat preservation treatment is performed for 120 minutes, and the stirring speed is 400r / min;

[0036] 4) Continue to dropwise add the remaining hydrogen peroxide for 120 minutes, and then keep warm for 120 minutes;

[0037] 5) After the heat preservation is completed, the temperature is lowered to below 45° C., and the pH of the reaction solution is adjusted to 7.5 with a pH adjuster to obtain auxiliary agent A.

[0038] Example 2 Preparation of auxiliary agent

[0039] The following steps are involved:

[0040] Weigh 2 parts of hydrogen peroxide, 70 parts of vinylbenzene, 0.6 parts of dodecyl mercaptan, 4 parts of pH adjuster, and 40 parts of solvent according to weight;

[0041] 2) adding 15 parts of vinylbenzene to the solvent, mixing and heating to 90° C., then adding 0.6 parts of hydrogen peroxide, keeping the temperature for 2 minutes to obtain a mixed solution, and continuously stirring;

[0042] 3) mixing dodecyl mercaptan and the remaining vinylbenzene, and then dropping them into the stirred mixed solution, the dropping time is controlled within 200 minutes, and after the end, heat preservation treatment is performed for 90 minutes, and the stirring speed is 300 r / min;

[0043] 4) Continue to dropwise add the remaining hydrogen peroxide for 150 minutes, and then keep warm for 90 minutes;

[0044] 5) After the heat preservation is completed, the temperature is lowered to below 45° C., and the pH of the reaction solution is adjusted to 7.8 with a pH adjuster to obtain auxiliary agent B.

[0045] Example 3 Preparation of auxiliary agent

[0046] The following steps are involved:

[0047] Weigh 1 part of hydrogen peroxide, 55 parts of vinylbenzene, 0.3 parts of dodecyl mercaptan, 3 parts of pH adjuster, and 25 parts of solvent according to weight;

[0048] 2) adding 20 parts of vinylbenzene to the solvent, mixing and heating to 90° C., then adding 0.3 parts of hydrogen peroxide, keeping the temperature for 2 minutes to obtain a mixed solution, and continuously stirring;

[0049] 3) mixing dodecyl mercaptan and the remaining vinylbenzene, and then dropping them into the stirred mixture, the dropping time is controlled within 150 minutes, and after the end, heat preservation treatment is performed for 120 minutes, and the stirring speed is 500r / min;

[0050] 4) Continue to drop the remaining hydrogen peroxide for 90 minutes, and then keep warm for 150 minutes;

[0051] 5) After the heat preservation is completed, the temperature is lowered to below 45° C., and the pH of the reaction solution is adjusted to 8 with a pH adjuster to obtain auxiliary agent C.

[0052] Example 4 Preparation of Clothing Oil Stain Detergent

[0053] Step 1: Weigh 2 parts of tert-butylhydroquinone, 8 parts of polyoxyethylene fatty alcohol ether, 8 parts of sodium lauryl polyether sulfate, 5 parts of sodium lignin sulfonate, 10 parts of palm alcohol, 10 parts of sodium carbonate, 0.04 parts of silver ion antibacterial agent, 8 parts of grapefruit ketone, 2 parts of limonamine alcohol, 5 parts of monoethanolamine, 13 parts of coconut oil fatty acid, 1 part of lipase, 40 parts of water, 4 parts of 1,2-propylene glycol, and 3 parts of the auxiliary agent A prepared in Example 1 according to weight parts;

[0054] Step 2: add half of the sodium carbonate into water, stir to dissolve, then add 1,2-propylene glycol, stir and heat to 65°C, then add coconut oil fatty acid, stir and react for 50 minutes, then add tert-butylhydroquinone and palmityl alcohol, stir and react for 120 minutes to obtain mixture A;

[0055] Step 3: When the mixture A is cooled to about 55° C., polyoxyethylene fatty alcohol ether, sodium lauryl polyether sulfate, sodium lignin sulfonate, grapefruit ketone, limonamine alcohol, monoethanolamine, additives, and remaining sodium carbonate are added to the obtained mixture A, and after stirring and mixing, the temperature is controlled at about 35° C., and then a silver ion antibacterial agent and lipase are added, and the detergent A is obtained by mixing.

[0056] Example 5 Preparation of Clothing Oil Stain Detergent

[0057] Step 1: Weigh 3 parts of tert-butylhydroquinone, 10 parts of polyoxyethylene fatty alcohol ether, 10 parts of sodium lauryl polyether sulfate, 6 parts of sodium lignin sulfonate, 12 parts of palm alcohol, 10 parts of sodium carbonate, 0.05 parts of silver ion antibacterial agent, 10 parts of grapefruit ketone, 3 parts of limonamine alcohol, 7 parts of diethanolamine, 15 parts of coconut oil fatty acid, 1.5 parts of lipase, 50 parts of water, 5 parts of 1,2-propylene glycol, and 4 parts of the auxiliary agent B prepared in Example 2 according to weight parts;

[0058] Step 2: add half of the sodium carbonate into water, stir to dissolve, add 1,2-propylene glycol, stir and heat to 70°C, add coconut oil fatty acid, stir and react for 60 minutes, then add tert-butylhydroquinone and palmityl alcohol, stir and react for 150 minutes to obtain mixture A;

[0059] Step 3: When the mixture A is cooled to 60° C., polyoxyethylene fatty alcohol ether, sodium lauryl polyether sulfate, sodium lignin sulfonate, grapefruit ketone, limonamine alcohol, diethanolamine, additives, and remaining sodium carbonate are added to the mixture A, and after stirring and mixing, the temperature is controlled at about 35° C., and then silver ion antibacterial agent and lipase are added, and the detergent B is obtained after mixing.

[0060] Example 6 Preparation of Clothing Oil Stain Detergent

[0061] Step 1: Weigh 1 part of tert-butylhydroquinone, 6 parts of polyoxyethylene fatty alcohol ether, 6 parts of sodium lauryl polyether sulfate, 4 parts of sodium lignin sulfonate, 9 parts of palmityl alcohol, 7 parts of sodium carbonate, 0.03 parts of silver ion antibacterial agent, 7 parts of grapefruit ketone, 2 parts of limonamine alcohol, 4 parts of triethanolamine, 11 parts of coconut oil fatty acid, 0.7 parts of lipase, 35 parts of water, 3 parts of 1,2-propylene glycol, and 2 parts of the auxiliary agent C prepared in Example 3 according to weight parts;

[0062] Step 2: add half of the sodium carbonate into water, stir to dissolve, then add 1,2-propylene glycol, stir and heat to 75°C, then add coconut oil fatty acid, stir and react for 60 minutes, then add tert-butylhydroquinone and palmityl alcohol, stir and react for 150 minutes to obtain mixture A;

[0063] Step 3: When the mixture A is cooled to 50° C., polyoxyethylene fatty alcohol ether, sodium lauryl polyether sulfate, sodium lignin sulfonate, grapefruit ketone, limonamine alcohol, diethanolamine, additives, and remaining sodium carbonate are added to the mixture A, and after stirring and mixing, the temperature is controlled at about 35° C., and then silver ion antibacterial agent and lipase are added, and the detergent C is obtained by mixing.

[0064] Comparative Example 1

[0065] The only difference between this embodiment and embodiment 4 is that sodium lignin sulfonate is not added in the formula.

[0066] Detergent D was prepared.

[0067] Comparative Example 2

[0068] The only difference between this embodiment and embodiment 4 is that no auxiliary agent A is added to the formula.

[0069] The detergent E was prepared.

[0070] Comparative Example 3

[0071] The only difference between this embodiment and embodiment 4 is that tert-butylhydroquinone is not added to the formula.

[0072] Detergent F was prepared.

[0073] Comparative Example 4

[0074] The only difference between this embodiment and embodiment 4 is that no polyoxyethylene fatty alcohol ether is added in the formula.

[0075] Detergent G is prepared.

[0076] Comparative Example 5

[0077] The difference between this embodiment and embodiment 4 is that no grapefruit ketone is added in the formula.

[0078] Detergent H is prepared.

[0079] Comparative Example 6

[0080] The difference between this embodiment and embodiment 4 is that citrulline alcohol is not added in the formula.

[0081] The detergent I was prepared.

[0082] Comparative Example 7

[0083] The difference between this embodiment and embodiment 4 is that an equal amount of sodium carbonate in the formula is replaced by sodium hydroxide. Detergent J is prepared.

[0084] Performance Testing

[0085] 1. Oil removal performance test

[0086] The detergency of the detergents prepared in Examples 4-6 and the detergents prepared in Comparative Examples 1-7 was tested according to GB / T13174-2021 "Determination of detergency and cyclic washing performance of detergents for clothing". The test results are shown in Table 1 below:

[0087] JB-01: artificial simulation of mixed oil stains, mainly to verify the decontamination power of oil and dust stains;

[0088] JB-03: Artificially simulate sebum stains, mainly used to verify the cleaning power against human body oil stains.

[0089] Table 1:

[0090]

[0091] As can be seen from Table 1, the detergent A prepared in Example 4 has the best decontamination effect. Compared with the detergent D prepared in Example 1, due to the absence of sodium lignin sulfonate, its decontamination effect is significantly reduced, mainly because sodium lignin sulfonate can not only play the role of a surfactant, but also has excellent cleaning adhesion and oil stain penetration and dissolution, and can also accelerate the removal of oil stains to a certain extent; compared with the detergents F, G, H and I prepared in the comparative examples, the decontamination effects are significantly reduced, and although the decontamination effect of detergent J is basically unchanged, it can be seen from subsequent tests that its irritation to the skin is significantly increased.

[0092] 2. Stability test

[0093] The changes in appearance and odor of the detergents prepared in Test Examples 4-6 and Comparative Examples 1-7 at different temperatures. The specific test method is: measure 3 samples of no less than 250g, place them in a well-sealed wide-mouth transparent glass bottle with a screw cap, place them at 25°C, -5°C, and 40°C respectively, and avoid direct light, place them for 1 month, and at the same time take out the samples at various temperatures, put them in a constant temperature water bath, and keep the samples constant at 25°C. When the sample reaches 25°C, observe whether there is stratification, precipitation, suspended matter or other changes in its appearance, and use the sense of smell to identify whether the sample has odor or other changes. If its appearance and odor have not changed, it is recorded as stable, otherwise it is recorded as unstable. The test results are shown in Table 2 below:

[0094] Table 2

[0095] serial number -5℃ 25℃ 40℃ Detergent A Stablize Stablize Stablize Detergent B Stablize Stablize Stablize Detergent C Stablize Stablize Stablize Detergent D Stablize Stablize Stablize Detergent E Unstable Stablize Unstable Detergent F Unstable Stablize Unstable Detergent G Unstable Stablize Unstable Detergent H Stablize Stablize Stablize Detergent I Unstable Stablize Unstable Detergent J Stablize Stablize Stablize

[0096] 3. The detergent prepared in this application is classified as a cosmetic product to be rinsed after use. According to the relevant provisions of the skin irritation / corrosion test of the "Cosmetic Hygiene Standard" (2015 Edition), rabbits are selected as test subjects to conduct acute skin irritation experiments; the detergents prepared in Examples 4-7 and the detergents obtained in Comparative Examples 1-6 are tested for skin irritation. The test results show that except for Detergent J, which has an integral result of 3 points and is moderately irritating, the integral results of the remaining detergents are all less than 2 points, which are mildly irritating.

[0097] 4. Antibacterial test

[0098] Staphylococcus aureus is a representative of Gram-positive bacteria and a common food-borne pathogen that is widely present in the natural environment. The detergents prepared in Example 4 and Comparative Examples 1-7 were subjected to antibacterial test effect evaluation. 2g of detergents of equal mass were used to carry out a bactericidal test on Staphylococcus aureus. The test time was 5 minutes. The results are shown in Table 3:

[0099] Table 3 Antibacterial effect

[0100] serial number Initial colony count Number of recovered colonies Sterilization rate Detergent A <![CDATA[2.28*10 5 ]]> <![CDATA[1.21*10 4 ]]> 94.7％ Detergent D <![CDATA[2.16*10 5 ]]> <![CDATA[1.74*10 4 ]]> 91.9％ Detergent E <![CDATA[2.24*10 5 ]]> <![CDATA[1.43*10 4 ]]> 93.6％ Detergent F <![CDATA[1.96*10 5 ]]> <![CDATA[2.83*10 4 ]]> 85.6％ Detergent G <![CDATA[1.48*10 5 ]]> <![CDATA[1.33*10 4 ]]> 91.0％ Detergent H <![CDATA[1.83*10 5 ]]> <![CDATA[1.26*10 4 ]]> 93.1％ Detergent I <![CDATA[1.75*10 5 ]]> <![CDATA[1.51*10 4 ]]> 91.4％ Detergent J <![CDATA[1.94*10 5 ]]> <![CDATA[1.09*10 4 ]]> 94.4％

[0101] 5. Color protection test

[0102] Weigh 2g of each of the standard laundry detergent prepared according to GB / T13174-2021 "Determination of the Detergency and Cycle Washing Performance of Detergents for Clothing", Detergent A prepared in Example 4, and Detergent E prepared in Comparative Example 2, and put them into the washing tank of the vertical detergent, add 1 liter of tap water to dissolve evenly, add 2 pieces of colored cloth and 2 pieces of white cloth (6*6cm, commercially available) to each washing tank, and mix and wash at 25°C for 25 minutes. The colored cloth is dyed with two commercially available direct blue and direct red dyes to dye the white cloth. Before washing, measure the color difference between the colored cloth and the white cloth. After washing, rinse with clean water twice and dry naturally to test the color difference between the colored cloth and the white cloth. The smaller the color difference value of the white cloth, the better the anti-color cross-linking performance, and the smaller the difference value of the colored cloth, the better the color fixation effect. The test results are shown in Table 4 below:

[0103] Table 4

[0104] serial number White cloth color difference Blue cloth color difference Red cloth color difference Standard laundry detergent 7.54 8.83 8.57 Detergent A 0.67 0.43 0.38 Detergent E 2.12 1.34 1.25

[0105] As can be seen from Table 4, the detergent A prepared in Example 4 has excellent effects of protecting color and preventing color transfer on clothes.

[0106] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A laundry detergent for oil stains, characterized in that: The following components are included in parts by weight: 1-3 parts of tert-butylhydroquinone, 5-10 parts of polyoxyethylene fatty alcohol ether, 5-10 parts of sodium lauryl polyether sulfate, 3-6 parts of sodium lignin sulfonate, 8-12 parts of palm alcohol, 6-12 parts of sodium carbonate, 0.02-0.06 parts of silver ion antibacterial agent, 6-12 parts of grapefruit ketone, 1-3 parts of limonamine alcohol, 3-8 parts of ethanolamine, 10-15 parts of coconut oil fatty acid, 30-50 parts of water, 3-5 parts of 1,2-propylene glycol, 2-5 parts of additives, and 0.5-1.5 parts of lipase; The raw materials for preparing the auxiliary agent include the following components: 1-2 parts of hydrogen peroxide, 50-70 parts of vinylbenzene, 0.2-0.6 parts of dodecyl mercaptan, 2-4 parts of pH regulator, and 20-40 parts of solvent; The preparation method of the auxiliary agent comprises the following steps: 1) Weigh 1-2 parts of hydrogen peroxide, 50-70 parts of vinylbenzene, 0.2-0.6 parts of dodecyl mercaptan, 2-4 parts of pH adjuster, and 20-40 parts of solvent according to weight; 2) adding part of vinylbenzene to the solvent, mixing and heating to above 85°C, then adding part of hydrogen peroxide, keeping warm for 2-4 minutes to obtain a mixed solution, and continuously stirring; wherein the part of vinylbenzene is 0.2-0.5 times of the total amount of vinylbenzene; and the part of hydrogen peroxide is 0.3-0.5 parts of the total amount of hydrogen peroxide; 3) Mix dodecyl mercaptan and the remaining vinylbenzene, and then drop them into the stirred mixture. After the dropwise addition is completed, heat preservation is performed for 90-150 minutes; 4) Continue to add the remaining hydrogen peroxide. After the addition is completed, keep warm for 90-150 minutes; 5) After the insulation is completed, the temperature is lowered to below 45°C, and the pH of the reaction solution is adjusted to between 7 and 8 with a pH adjuster to obtain an auxiliary agent.

2. The laundry detergent for oil stains according to claim 1, characterized in that: The following components are included in parts by weight: 2 parts of tert-butylhydroquinone, 8 parts of polyoxyethylene fatty alcohol ether, 8 parts of sodium lauryl polyether sulfate, 5 parts of sodium lignin sulfonate, 10 parts of palm alcohol, 10 parts of sodium carbonate, 0.05 parts of silver ion antibacterial agent, 10 parts of grapefruit ketone, 2 parts of limonamine alcohol, 6 parts of ethanolamine, 12 parts of coconut oil fatty acid, 40 parts of water, 4 parts of 1,2-propylene glycol, and 3 parts of additives.

3. The laundry detergent for oil stains according to claim 1, characterized in that: In step 2) to step 5), the stirring state is maintained, and the stirring rate is 250-500 r / min; In step 3), the dropping time is 150-250 minutes; In step 4), the dropping time is 90-150 minutes.

4. The laundry detergent for oil stains according to claim 1, characterized in that: The ethanolamine is one of monoethanolamine, diethanolamine or triethanolamine.

5. A method for preparing the laundry oil stain detergent according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: weigh 1-3 parts of tert-butylhydroquinone, 5-10 parts of polyoxyethylene fatty alcohol ether, 5-10 parts of sodium lauryl polyether sulfate, 3-6 parts of sodium lignin sulfonate, 8-12 parts of palmityl alcohol, 6-12 parts of sodium carbonate, 0.02-0.06 parts of silver ion antibacterial agent, 6-12 parts of grapefruit ketone, 1-3 parts of limonamine alcohol, 3-8 parts of ethanolamine, 10-15 parts of coconut oil fatty acid, 0.5-1.5 parts of lipase, 30-50 parts of water, 3-5 parts of 1,2-propylene glycol, and 2-5 parts of additives according to weight parts; Step 2: adding part of sodium carbonate to water, stirring to dissolve, then adding 1,2-propylene glycol, heating and stirring, then adding coconut oil fatty acid, stirring and reacting for 30-60 minutes, then adding tert-butylhydroquinone and palmityl alcohol, stirring and reacting for more than 100 minutes, to obtain a mixture A; Step 3: Add polyoxyethylene fatty alcohol ether, sodium lauryl polyether sulfate, sodium lignin sulfonate, grapefruit ketone, limonamine alcohol, ethanolamine, auxiliary agent, and remaining sodium carbonate to the obtained mixture A, stir and mix, then add silver ion antibacterial agent and lipase, mix and obtain.

6. The method for preparing the oil stain detergent for clothes according to claim 5, characterized in that: In step 2, the entire stirring and mixing process is controlled at a temperature between 60-80°C; in step 3, the temperature is controlled at 50-60°C before adding the silver ion antibacterial agent and the lipase, and the silver ion antibacterial agent and the lipase are added after the temperature drops below 40°C.

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