Anti-mosquito fabric finishing agent, preparation method and application thereof

Abstract

This application discloses a mosquito-repellent fabric finishing agent, a preparation method, and its application. The preparation method comprises the following steps: S1: reacting hydrogenated silicone oil, allyl epoxy-terminated polyether, and allyl hydroxyl-terminated polyether in a first solvent and a first catalyst to produce epoxy-polyether-modified silicone oil; S2: reacting an aqueous solution of isobutyl hydroxyethylpiperidinecarboxylate, epoxy-polyether-modified silicone oil, and tetramethyldipropylenetriamine in a second solvent and a second catalyst to produce the mosquito-repellent fabric finishing agent. The mosquito-repellent fabric finishing agent of the present application imparts excellent mosquito-repellent and insect-repellent properties to the fabric while maintaining good softness, moisture-permeability, and skin-friendly feel.

Description

Technical Field

[0001] The present application relates to the field of fabric finishing agents, and in particular to a mosquito-repellent fabric finishing agent, a preparation method and applications thereof. Background Art

[0002] In their spare time, outdoor activities like hiking and camping have gradually become popular ways for people to relax and unwind. However, mosquitoes are a particularly prominent problem in outdoor environments during the summer. Their harmful effects not only include itchy skin and disrupted sleep patterns caused by bites and bloodsucking, but also spread major infectious diseases such as malaria, dengue fever, epidemic encephalitis B, and lymphatic filariasis, posing a serious threat to human health and safety. Against this backdrop, demand for outdoor textiles that combine multifunctional properties such as mosquito repellency, breathability, moisture absorption, and soft, skin-friendly properties has grown significantly.

[0003] Current mainstream mosquito repellent technologies still rely on traditional chemical agents such as mosquito coils and electric mosquito repellents. While these offer advantages such as ease of use and low cost, they often suffer from short-lived protection and the release of volatile toxic substances. Long-term use in confined spaces can easily lead to allergic reactions such as sore throat, nasal irritation, and even neurological damage. While pyrethroid-based nano-microcapsule insect repellent finishes have been developed in recent years, using a fixative to create a long-lasting repellent film on the fabric surface, effectively repelling mosquitoes upon contact, these products still face two major technical bottlenecks: First, insufficient washability requires cross-linking agents to enhance fastness, which results in stiffness and hardening of the fabric; second, achieving both durable functionality and wear comfort is difficult. Overcoming existing technological limitations and developing composite functional fabrics that combine high mosquito repellency with washable durability and comfortable wear has become a key research and development direction in the outdoor and home textile sectors.

[0004] As core auxiliaries for textile finishing, polysiloxane finishing agents excel in enhancing fabric softness and breathability. To achieve multifunctional composite finishing, the industry typically employs multi-process stacking or auxiliaries compounding processes, but both approaches have significant limitations: multi-process processing significantly increases water and electricity consumption and wastewater discharge, making it difficult to be sustainable; and multi-auxiliary compounding requires strict consideration of chemical compatibility; improper combinations can easily lead to flocculation and sedimentation, resulting in quality issues such as color spots and uneven feel on fabrics. Developing highly efficient, multifunctional monomeric rectifiers, and streamlining process flows to achieve synergistic performance enhancements, is becoming a key path for industry development. Summary of the Invention

[0005] The purpose of the present application is to provide a finishing agent with anti-mosquito effect, which can achieve the effects of softness, hydrophilicity, moisture absorption and anti-mosquito of fabrics in one processing step.

[0006] To achieve the above objectives, the technical solution adopted in this application is to provide a mosquito-proof fabric finishing agent, the general structural formula of which is:

[0007]

[0008] Where m, x, y, z, a, c, d, e, and f are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 10≤c≤15, 2≤d≤4, 6≤e≤8, and 18≤f≤20.

[0009] The present application also provides a method for preparing a mosquito-proof fabric finishing agent, comprising the following steps: S1: reacting hydrogenated silicone oil, allyl epoxy-terminated polyether, and allyl hydroxyl-terminated polyether in a first solvent and a first catalyst to obtain epoxy polyether-modified silicone oil; S2: reacting an aqueous solution of hydroxyethylpiperidinecarboxylic acid isobutyl ester, the epoxy polyether-modified silicone oil, and tetramethyldipropylenetriamine in a second solvent and a second catalyst to obtain the mosquito-proof fabric finishing agent; the mosquito-proof fabric finishing agent has the structural formula:

[0010]

[0011] Where m, x, y, z, a, c, d, e, and f are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 10≤c≤15, 2≤d≤4, 6≤e≤8, and 18≤f≤20.

[0012] As a preferred embodiment, the structural formula of the epoxy polyether modified silicone oil is:

[0013] Where m, x, y, z, a, b, and c are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 26≤b≤32, and 10≤c≤15.

[0014] As another preference, the number average molecular weight of the hydrogen-containing silicone oil is 5000-6000.

[0015] As another preference, the number average molecular weight of the allyl epoxy terminated polyether is 250-300.

[0016] As another preference, the number average molecular weight of the allyl hydroxyl terminated polyether is 800-1000.

[0017] As another preferred embodiment, the S1 step is specifically as follows, calculated by mass: 500-600 parts of the hydrogenated silicone oil, 650-960 parts of the allyl epoxy-terminated polyether and 400-800 parts of the allyl hydroxy-terminated polyether are added to a reactor equipped with a stirrer, a condenser reflux and a thermometer, and 665-1000 parts of the first solvent and 10-12 parts of a 2% chloroplatinic acid-isopropanol solution are added, the temperature is raised to 90-100° C., and the temperature is kept for 5-8 hours to obtain the epoxy polyether-modified silicone oil.

[0018] As another preferred embodiment, the S2 step is specifically as follows, calculated by mass: 588 to 654 parts of a 70% aqueous solution of hydroxyethylpiperidinecarboxylic acid isobutyl ester and 2215 to 3360 parts of the epoxy polyether modified silicone oil are added to a reactor equipped with an agitator, a condenser reflux and a thermometer, and 460 to 670 parts of diethylene glycol monobutyl ether are added as the second solvent and 15 to 33 parts of triethylamine are added as the second catalyst, the temperature is raised to 100 to 110° C., and after keeping warm for 8 to 12 hours, the temperature is lowered to 80 to 85° C., 112 to 150 parts of the tetramethyldipropylenetriamine are added, and the temperature is kept warm for 5 to 8 hours to obtain the mosquito repellent fabric finishing agent.

[0019] More preferably, the first solvent is diethylene glycol monobutyl ether or dipropylene glycol.

[0020] The present application also provides a mosquito-repellent fabric finishing agent product, characterized in that it comprises the following raw materials in parts by mass: 150 to 250 parts by mass of water, 1 to 5 parts by mass of glacial acetic acid, and 90 to 110 parts by mass of the above-mentioned mosquito-repellent fabric finishing agent, or the mosquito-repellent fabric finishing agent prepared by the above-mentioned preparation method.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) The mosquito-proof fabric finishing agent provided in this application can give the fabric a good mosquito-proof and insect-repellent effect, and the effect can still be maintained after washing 10 times;

[0023] (2) The fabric treated with the mosquito-repellent fabric finishing agent provided in the present application has softness, breathability, and skin-friendly feel, which can be maintained even after washing. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0026] The present application provides a mosquito-proof fabric finishing agent, the general structural formula of which is:

[0027]

[0028] Where m, x, y, z, a, c, d, e, and f are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 10≤c≤15, 2≤d≤4, 6≤e≤8, and 18≤f≤20.

[0029] This application introduces isobutyl hydroxyethylpiperidinecarboxylate into the structure of a mosquito-repellent fabric finish, synergistically coordinating it with polysiloxane molecular chains to form a continuous, stable protective film on the surface of fabric fibers. This film not only possesses excellent mechanical strength and moisture permeability, but also effectively blocks the diffusion of odorants such as lactic acid and volatile amines in human sweat through dense molecular coverage, significantly reducing the intensity of the chemical signals that mosquitoes rely on to locate their hosts.

[0030] Unlike traditional chemical mosquito repellents that directly act on the insect's nervous system through a toxic mechanism, the technology of this application achieves non-toxic, long-lasting mosquito repellent protection while ensuring wearing comfort through the dual action paths of physical shielding and odor interference of the fabric, thus developing an environmentally friendly functional textile finishing agent.

[0031] In addition, the structure of the mosquito-repellent fabric finishing agent of the present application also synergistically introduces two functional segments, polysiloxane and polyether. The flexible molecular conformation of polysiloxane can significantly improve the soft touch of the product, while the hydrophilic groups in the polyether segment achieve efficient moisture management through hydrogen bonding, so that the product has the dual advantages of a silky texture and rapid moisture absorption and perspiration removal, and has important applications in the development of high-end textiles.

[0032] The mosquito-repellent fabric finishing agent described in this application achieves multifunctional integration through innovative molecular structural design, imparting triple properties to fabrics in a single treatment. First, the soft segments form a uniform coating on the fabric surface, significantly enhancing the fabric's smooth, skin-friendly feel. Second, the hydrophilic group network creates rapid moisture-transmitting pathways, ensuring timely absorption and evaporation of sweat, keeping clothing dry and comfortable. Finally, a dense film forms on the fabric surface, masking human odor and interfering with mosquitoes' chemical perception.

[0033] The mosquito repellent finishing agent technology of this application can not only break through the compatibility limitations of the compounding of multiple additives in traditional processes, but also significantly reduce water and electricity consumption and wastewater discharge by streamlining the processing steps, thereby improving production efficiency while reducing environmental load.

[0034] In particular, the introduction of silicon hydrogen groups and epoxy groups into the product structure of the mosquito repellent finishing agent of the present application can form a stable bonding effect with the fabric components, thereby enhancing the fixation fastness of the functional components on the fabric surface and the mosquito repellent durability.

[0035] The present application also provides a method for preparing a mosquito repellent finishing agent, comprising the following preparation steps, calculated in parts by mass:

[0036] S1: placing 500-600 parts of hydrogenated silicone oil, 650-960 parts of allyl epoxy-terminated polyether, and 400-800 parts of allyl hydroxyl-terminated polyether in a reaction vessel, adding a first solvent and a first catalyst, heating the reaction and keeping the temperature for a period of time to obtain epoxy polyether-modified silicone oil;

[0037] S2: 588 to 654 parts of an aqueous solution of isobutyl hydroxyethylpiperidinecarboxylate and 2215 to 3360 parts of epoxy polyether modified silicone oil are added to a reaction container, and then a second solvent and a second catalyst are added. After the temperature is raised and the temperature is maintained for a period of time, 112 to 150 parts of tetramethyldipropylenetriamine are added to the container and the temperature is maintained for a period of time to obtain the mosquito repellent finishing agent of the present application.

[0038] The present application also provides a chemical reaction formula for reference, wherein the reaction formula for the reaction of hydrogenated silicone oil, allyl epoxy-terminated polyether and allyl hydroxyl-terminated polyether to form epoxy polyether-modified silicone oil in step S1 is:

[0039] Wherein m, n, x, y, z, a, b, and c are integers, and 34≤m≤37, 41≤n≤55, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 26≤b≤32, and 10≤c≤15.

[0040] The reaction formula of hydroxyethyl piperidine isobutyl ester, epoxy polyether modified silicone oil and tetramethyldipropylenetriamine in step S2 is:

[0041] Where m, x, y, z, a, b, c, d, e, and f are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 26≤b≤32, 10≤c≤15, 2≤d≤4, 6≤e≤8, and 18≤f≤20.

[0042] The present application first uses a hydrosilylation reaction to introduce epoxy-terminated polyether and hydroxyl-terminated polyether into hydrogenated silicone oil, then uses hydroxyl and epoxy groups to react under the action of a catalyst, and then introduces hydroxyethyl piperidine isobutyl ester and compounded with polysiloxane chain segments. After the fabric is treated, a dense film can be formed on the surface of the fabric. After wearing, the odor emitted by the human body is masked through the shielding effect, preventing mosquitoes from sensing the presence of the human body through the odor, and giving the clothing product the effect of repelling mosquitoes.

[0043] This mosquito-repellent fabric finishing agent utilizes an epoxy curing mechanism to introduce amino groups into the product structure. After treatment, a single soft-finishing step imparts superior softness, moisture absorption, and comfort to the fabric. The silane and epoxy groups in the product structure form a stronger bond with the fabric during treatment, enhancing its moisture absorption and mosquito-repellent properties.

[0044] In some embodiments, the number average molecular weight of the hydrogenated silicone oil is 5000-6000, the number average molecular weight of the allyl epoxy terminated polyether is 250-300, and the number average molecular weight of the allyl hydroxy terminated polyether is 800-1000.

[0045] In some embodiments, the first solvent is diethylene glycol monobutyl ether or dipropylene glycol, and the first catalyst is a 2% chloroplatinic acid-isopropanol solution; the second solvent is diethylene glycol monobutyl ether, and the second catalyst is triethylamine.

[0046] The present application provides a specific preparation step of a mosquito repellent fabric finishing agent, calculated by weight:

[0047] S1: adding 500-600 parts of hydrogenated silicone oil, 650-960 parts of allyl epoxy-terminated polyether and 400-800 parts of allyl hydroxyl-terminated polyether to a reaction kettle equipped with a stirrer, reflux and thermometer, and adding 665-1000 parts of solvent and 10-12 parts of 2% chloroplatinic acid-isopropanol solution, heating to 90-100° C., and keeping warm for 5-8 hours to prepare epoxy polyether modified silicone oil;

[0048] S2: 588-654 parts of a 70% aqueous solution of hydroxyethylpiperidinecarboxylic acid isobutyl ester and 2215-3360 parts of epoxy polyether modified silicone oil are added to a reaction kettle equipped with a stirrer, a condenser reflux, and a thermometer, and 460-670 parts of diethylene glycol monobutyl ether as a solvent and 15-33 parts of triethylamine as a catalyst are added. The temperature is raised to 100-110° C. and kept warm for 8-12 hours. The temperature is then lowered to 80-85° C., 112-150 parts of tetramethyldipropylenetriamine are added, and the temperature is kept warm for 5-8 hours to prepare the mosquito repellent fabric finishing agent of the present application.

[0049] The present application also provides an application of the anti-mosquito fabric finishing agent, namely, an anti-mosquito fabric finishing agent product, comprising 90 to 110 parts by mass of the above-mentioned anti-mosquito fabric finishing agent, 150 to 250 parts by mass of water and 1 to 5 parts by mass of glacial acetic acid.

[0050] Example 1

[0051] A mosquito repellent fabric finishing agent was prepared according to the following preparation steps, calculated by mass fraction:

[0052] S1: 500 parts of hydrogenated silicone oil with a number average molecular weight of 5000, 650 parts of allyl epoxy-terminated polyether with a number average molecular weight of 250, and 400 parts of allyl hydroxy-terminated polyether with a number average molecular weight of 800 are added to a reactor equipped with a stirrer, a condenser reflux, and a thermometer, and 665 parts of diethylene glycol monobutyl ether and 10 parts of a 2% chloroplatinic acid-isopropanol solution are added. The temperature is raised to 100° C. and kept warm for 6 hours to obtain epoxy polyether-modified silicone oil;

[0053] S2: 588 parts of a 70% aqueous solution of hydroxyethylpiperidinecarboxylic acid isobutyl ester and 2215 parts of epoxy polyether modified silicone oil are added to a reaction kettle equipped with a stirrer, a condenser reflux, and a thermometer, and 470 parts of diethylene glycol monobutyl ether as a solvent and 15 parts of triethylamine as a catalyst are added. The temperature is raised to 110° C., kept at this temperature for 10 hours, then cooled to 85° C., 112 parts of tetramethyldipropylenetriamine are added, and the temperature is kept at this temperature for 6 hours to prepare a mosquito repellent fabric finishing agent.

[0054] Example 2

[0055] In step S1, hydrogenated silicone oil with a number average molecular weight of 6000 is selected, and the amount of hydrogenated silicone oil added is adjusted to 600 parts by mass, the amount of diethylene glycol monobutyl ether added is adjusted to 707 parts by mass, and the amount of 2% chloroplatinic acid-isopropyl alcohol solution added is adjusted to 12 parts by mass;

[0056] The amount of epoxy polyether modified silicone oil added in step S2 was adjusted to 2357 parts by mass, and the amount of diethylene glycol monobutyl ether added was adjusted to 460 parts by mass;

[0057] The other preparation steps were consistent with those in Example 1.

[0058] Example 3

[0059] The amount of allyl epoxy-terminated polyether added in step S1 is adjusted to 800 parts by mass, and the amount of diethylene glycol monobutyl ether added is adjusted to 771 parts by mass; the amount of epoxy polyether-modified silicone oil added in step S2 is adjusted to 2571 parts by mass, and the amount of diethylene glycol monobutyl ether added is adjusted to 526 parts by mass; the other preparation steps are consistent with the preparation steps in Example 2.

[0060] Example 4

[0061] The number average molecular weight of the allyl epoxy-terminated polyether in step S1 is selected to be 300, and the addition amount is adjusted to 780 parts by mass, and the addition amount of diethylene glycol monobutyl ether is adjusted to 760 parts by mass; the addition amount of epoxy polyether-modified silicone oil in step S2 is adjusted to 2540 parts by mass, and the addition amount of diethylene glycol monobutyl ether is adjusted to 480 parts by mass; the other preparation steps are consistent with the preparation steps in Example 2.

[0062] Example 5

[0063] The amount of allyl epoxy-terminated polyether added in step S1 was adjusted to 960 parts by mass, and the amount of diethylene glycol monobutyl ether added was adjusted to 840 parts by mass; the amount of epoxy polyether-modified silicone oil added in step S2 was adjusted to 2800 parts by mass, and the amount of diethylene glycol monobutyl ether added was adjusted to 565 parts by mass; the other preparation steps were consistent with the preparation steps in Example 4.

[0064] Example 6

[0065] The amount of allyl epoxy-terminated polyether added in step S1 is adjusted to 800 parts by mass, and the amount of diethylene glycol monobutyl ether added is adjusted to 771 parts by mass; the amount of epoxy polyether-modified silicone oil added in step S2 is adjusted to 2571 parts by mass, and the amount of diethylene glycol monobutyl ether added is adjusted to 526 parts by mass; the other preparation steps are consistent with the preparation steps in Example 2.

[0066] Example 7

[0067] The number average molecular weight of the allyl hydroxyl-terminated polyether in step S1 is selected to be 1000, and the addition amount is adjusted to 500 parts by mass, and the addition amount of diethylene glycol monobutyl ether is adjusted to 750 parts by mass; the addition amount of epoxy polyether-modified silicone oil in step S2 is adjusted to 2500 parts by mass, and the addition amount of diethylene glycol monobutyl ether is adjusted to 515 parts by mass; the other preparation steps are consistent with the preparation steps in Example 2.

[0068] Example 8

[0069] The amount of allyl hydroxyl-terminated polyether added in step S1 is adjusted to 800 parts by mass, and the amount of diethylene glycol monobutyl ether added is adjusted to 878 parts by mass; the amount of epoxy polyether-modified silicone oil added in step S2 is adjusted to 2928 parts by mass, and the amount of diethylene glycol monobutyl ether added is adjusted to 586 parts by mass; the other preparation steps are consistent with the preparation steps in Example 7.

[0070] Example 9

[0071] The amount of hydroxyethylpiperidinecarboxylic acid isobutyl ester aqueous solution added in step S2 is adjusted to 654 parts by mass, the amount of diethylene glycol monobutyl ether added is adjusted to 538 parts by mass, and the amount of triethylamine added is adjusted to 25 parts by mass. The other preparation steps are consistent with the preparation steps in Example 6.

[0072] Example 10

[0073] The holding time of S1 was adjusted to 8 hours, and the other preparation steps were consistent with those in Example 9.

[0074] Example 11

[0075] In step S1, 771 parts by mass of diethylene glycol monobutyl ether were replaced with 771 parts by mass of dipropylene glycol, and the other preparation steps were consistent with those in Example 9.

[0076] Example 12

[0077] The holding time in step S2 was adjusted to 8 hours, and the other preparation steps were consistent with those in Example 9.

[0078] Comparative Example 1

[0079] The isobutyl hydroxyethylpiperidinecarboxylate in step S2 was replaced with the corresponding parts by mass of polyetheramine D230, and the other preparation steps were consistent with those in Example 9.

[0080] Comparative Example 2

[0081] Purchase commercially available hydrophilic silicone softener RH-NB-8298-3.

[0082] Comparative Example 3

[0083] Purchase the commercially available mosquito repellent and mosquito-proof finishing agent PL-120, the main ingredient of which is pyrethroid compounds.

[0084] After emulsifying the mosquito-proof fabric finishing agents of the above embodiments and comparative examples, the fabrics were treated according to the following steps:

[0085] Emulsification step: 100 parts by mass of the mosquito repellent fabric finishing agent of each of the above embodiments or comparative examples, 200 parts by mass of water and 2 parts by mass of glacial acetic acid are emulsified in a homogenizer to obtain the emulsion of the product of the present application.

[0086] Finishing steps: dip the cotton fabric into the working liquid, the working liquid is 60g / L of the emulsion of the product of this application, the liquid filling rate is 80%, pre-bake for 45 to 60 seconds, the temperature is set to 170°C, and the fabric performance is evaluated after regaining moisture for 1 hour.

[0087] Fabric performance evaluation:

[0088] 1. Softness Test: According to GB / T 18318 "Textiles - Determination of Fabric Bending Length": Place a long strip of test specimen on a platform. Press a ruler against the specimen, with the specimen's long axis parallel to the ruler's length. Move the ruler and the specimen's long axis simultaneously on the platform, allowing the portion of the specimen extending beyond the platform to be suspended and bent under its own weight. When the downwardly bent end of the specimen touches a surface inclined at a 41.5° angle to the horizontal, half the extended length of the specimen is considered the bending length. The specimen's flexural stiffness is calculated from the bending length and the mass per unit area.

[0089] Sample: 6 pieces of 25mm*25mm warp and weft knitted fabrics, each piece is measured 4 times and the average value is taken;

[0090] Calculation of bending stiffness: G = mC 3 10 -2

[0091] Where: G is the bending stiffness per unit width, mN·cm;

[0092] m——mass per unit area of ​​sample, g / m 2 ;

[0093] C——average bending length of the specimen, cm

[0094] 2. Anti-mosquito effect evaluation test: Refer to GB / T 30126-2013 "Testing and evaluation of mosquito repellent properties of textiles" to test the anti-mosquito effect of the fabric. The repellent rate R is used to represent the anti-mosquito effect. The larger the value, the better the repellent effect.

[0095] 3. Water Vapor Permeability Evaluation Test: Determined in accordance with GB / T 12704.1-2009, "Test Method for Water Vapor Permeability of Textile Fabrics - Part 1: Moisture Absorption Method." The water vapor permeability (WVT) value is used to represent the water vapor permeability. A higher value indicates better water vapor permeability.

[0096] 4. Washability rating test: Wash in accordance with GB / T 8629-2017 "Textile Testing - Household Washing and Drying Procedure", and test its moisture permeability and mosquito repellent effect.

[0097] 5. Hand feel evaluation test: Use the hand touch method to evaluate the overall hand feel, using a 1-5 point evaluation method, with 1 point being the worst and 5 points being the best. 10 people evaluate at the same time and take the average value.

[0098] 6. Hydrophilicity evaluation test: Use a standard dropper with a 25-drop / mL dropper to drop a drop of water from a height of 2 cm from the fabric surface. Test the time it takes for the fabric to absorb water under static conditions. Drop more than 3 times at different positions and take the average value.

[0099] The results of the softness evaluation test, the mosquito repellent effect evaluation test, the moisture permeability evaluation test, the hydrophilicity evaluation test, and the hand feel evaluation test are recorded in Table 1 below.

[0100] Table 1 Performance evaluation results of the finishing agents of various embodiments and comparative examples on cotton fabrics

[0101] project Bending stiffness / mN.cm Repellency R / % <![CDATA[Water vapor permeability / g / m 2 .24h]]> Hydrophilic / s Feel / points Original cloth 49.21 0 2473 <2s 1 Example 1 14.25 70.21 3098 1.58 3～4 Example 2 11.77 70.30 2970 1.44 4 Example 3 15.39 71.21 3075 1.67 3～4 Example 4 12.51 70.78 2997 1.45 3～4 Example 5 16.22 70.12 3176 1.31 3 Example 6 8.89 71.54 3196 2.25 5 Example 7 14.48 68.21 3318 <1 3～4 Example 8 16.67 65.30 3497 <1 3 Example 9 9.78 79.54 3219 2.31 4～5 Example 10 9.64 78.81 3181 2.01 4～5 Example 11 9.38 79.70 3208 2.11 4～5 Example 12 9.79 78.51 3211 1.97 4～5 Comparative Example 1 8.62 0 2969 2.94 5 Comparative Example 2 9.84 0 2762 <1 4～5 Comparative Example 3 63.97 99.9 1365 >10 <1

[0102] It is not difficult to see from the test results in Table 1 that the anti-mosquito fabric finishing agent prepared in the present application can significantly improve the mosquito repellency rate of cotton fabrics, while ensuring that the fabric is soft and breathable and has a good feel.

[0103] Analysis of the performance test results of Examples 9 to 12 shows that the finishing agents obtained by changing the reaction time or replacing the reaction solvent have little effect on the properties of the treated fabric. This may be because the fabric finishing agents of the present application have fully reacted within a certain period of time, achieving a better finishing effect.

[0104] Analysis of the fabric test results of Examples 2, 7, and 8 shows that increasing the molecular weight or dosage of the allyl hydroxyl-terminated polyether can improve the moisture absorption performance of the fabric after being treated with the finishing agent product, but has a certain impact on the hand feel.

[0105] Analysis of Example 6 and Example 9 shows that increasing the amount of isobutyl hydroxyethylpiperidinecarboxylate can enhance the mosquito and insect repellent effect of the finishing agent product, but excessive use will still lead to a decrease in the feel of the fabric.

[0106] Compared with some commercially available hydrophilic finishing agents and mosquito repellent finishing agents, the fabric finishing agent of the present application can achieve mosquito repellent effect while ensuring the softness, hydrophilicity, moisture permeability and breathability of the fabric.

[0107] The mosquito repellent effect, moisture permeability, softness and feel of the cotton fabric after 10 washes were measured, and the test results were compared with the original fabric and recorded in Table 2 below.

[0108] Table 2 Performance test results of fabrics after washing 10 times

[0109]

[0110]

[0111] The fabric treated with the anti-mosquito fabric finishing agent product of the present application has good water-washing resistance. After 10 washes, it can still maintain good mosquito repellent effect and softness. The feel and moisture permeability are better than the original fabric.

[0112] The mosquito repellent finishing agent product of the present application has multiple effects in one dose. After treating the fabric, it can give the fabric excellent softness, moisture absorption and mosquito repellent effect. It is not easy to conflict when combined with other auxiliaries. The fabric treatment step is efficient, time-saving, water-saving and reduces environmental pressure.

[0113] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A mosquito-proof fabric finishing agent, characterized in that: Its general structural formula is: Where m, x, y, z, a, c, d, e, and f are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 10≤c≤15, 2≤d≤4, 6≤e≤8, and 18≤f≤20.

2. A method for preparing a mosquito-proof fabric finishing agent, characterized in that: The following steps are involved: S1: reacting hydrogenated silicone oil, allyl epoxy terminated polyether, and allyl hydroxy terminated polyether in a first solvent and a first catalyst to prepare epoxy polyether modified silicone oil; S2: reacting an aqueous solution of isobutyl hydroxyethylpiperidinecarboxylate, the epoxy polyether modified silicone oil, and tetramethyldipropylenetriamine in a second solvent and a second catalyst to prepare the mosquito repellent fabric finishing agent; The structural formula of the mosquito-proof fabric finishing agent is: Where m, x, y, z, a, c, d, e, and f are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 10≤c≤15, 2≤d≤4, 6≤e≤8, and 18≤f≤20.

3. The preparation method according to claim 2, wherein The structural formula of the epoxy polyether modified silicone oil is: Where m, x, y, z, a, b, and c are integers, and 34≤m≤37, x is 3 or 4, y is 1 or 2, 17≤z≤21, 5≤a≤8, 26≤b≤32, and 10≤c≤15.

4. The preparation method according to claim 2, wherein The number average molecular weight of the hydrogen-containing silicone oil is 5000-6000.

5. The preparation method according to claim 2, wherein The number average molecular weight of the allyl epoxy terminated polyether is 250-300.

6. The preparation method according to claim 2, wherein The number average molecular weight of the allyl hydroxyl terminated polyether is 800-1000.

7. The preparation method according to claim 2, wherein In parts by mass, the S1 step is specifically as follows: 500-600 parts of the hydrogenated silicone oil, 650-960 parts of the allyl epoxy-terminated polyether and 400-800 parts of the allyl hydroxyl-terminated polyether are added to a reactor equipped with a stirrer, a condenser reflux and a thermometer, 665-1000 parts of the first solvent and 10-12 parts of a 2% chloroplatinic acid-isopropanol solution are added, the temperature is raised to 90-100° C., and the temperature is kept for 5-8 hours to obtain the epoxy polyether-modified silicone oil.

8. The preparation method according to claim 2, wherein In parts by mass, the S2 step is specifically as follows: 588 to 654 parts of a 70% aqueous solution of hydroxyethylpiperidinecarboxylic acid isobutyl ester and 2215 to 3360 parts of the epoxy polyether modified silicone oil are added to a reactor equipped with an agitator, a condenser reflux and a thermometer, and 460 to 670 parts of diethylene glycol monobutyl ether are added as the second solvent and 15 to 33 parts of triethylamine are added as the second catalyst, the temperature is raised to 100 to 110° C., and the temperature is kept for 8 to 12 hours. Then, the temperature is lowered to 80 to 85° C., 112 to 150 parts of the tetramethyldipropylenetriamine are added, and the temperature is kept for 5 to 8 hours to obtain the mosquito repellent fabric finishing agent.

9. The preparation method according to claim 2, wherein The first solvent is diethylene glycol monobutyl ether or dipropylene glycol.

10. A mosquito repellent fabric finishing agent product, characterized in that: The invention comprises the following raw materials in parts by mass: 150 to 250 parts by mass of water, 1 to 5 parts by mass of glacial acetic acid, and 90 to 110 parts by mass of the mosquito-proof fabric finishing agent according to claim 1, or the mosquito-proof fabric finishing agent prepared by the preparation method according to claims 2 to 9.

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