Low-ring environmental protection type moisture absorption and quick-drying softener, and preparation method and application thereof

Abstract

The application belongs to the technical field of textile chemical auxiliaries, and discloses a low-ring-body environment-friendly moisture-absorbing and quick-drying softener as well as a preparation method and application thereof.The preparation method of the low-ring-body environment-friendly moisture-absorbing and quick-drying softener comprises the following steps: S1, mixing cyclohexylamine, an acid-binding agent and a catalyst, adding an alkylating agent, and reacting to obtain a metal ion complex catalyst; S2, mixing dimethylsiloxane mixed ring bodies and an epoxy capping agent, adding alkali and the metal ion complex catalyst, and reacting to obtain a double-end epoxy silicone oil intermediate; S3, mixing a dibasic acid monomer, a dibasic amine monomer and a catalyst, and reacting to obtain a double-end amino polyamide intermediate; S4, mixing the double-end epoxy silicone oil intermediate and the double-end amino polyamide intermediate, and reacting to obtain a moisture-absorbing and quick-drying softener crude oil; and S5, emulsifying the moisture-absorbing and quick-drying softener crude oil to obtain the low-ring-body environment-friendly moisture-absorbing and quick-drying softener.

Description

Technical Field

[0001] This invention relates to the field of textile chemical auxiliaries technology, specifically to a low-cyclic environmentally friendly moisture-wicking and quick-drying softener, its preparation method, and its application. Background Technology

[0002] With the rapid development of the textile industry and the upgrading of consumption, the market's requirements for the comprehensive performance of clothing fabrics are increasing. Fabrics that combine moisture-wicking and quick-drying properties with a soft feel have become a hot topic in industry research and application, and are widely used in sportswear, everyday clothing, and home textiles. Moisture-wicking and quick-drying performance, as a core indicator affecting the comfort of a fabric, is mainly reflected in two aspects: the fabric's ability to quickly absorb sweat from the skin surface (moisture wicking) and the ability to conduct sweat to the outer surface of the fabric for rapid evaporation (moisture permeability). Cotton, polyester, and nylon, as the current mainstream textile fibers, all have shortcomings in moisture-wicking and quick-drying performance, making it difficult to balance comfort and practicality. Cotton fiber has a high moisture absorption rate, but it is prone to fiber swelling after absorbing moisture, resulting in slow drying and a sticky feeling when worn. Polyester fiber has excellent strength and fast drying speed, but its moisture absorption rate is extremely low, easily generating static electricity during wear, and its poor breathability can cause a stuffy feeling. Nylon fiber has a moisture absorption rate between cotton and polyester, but it is prone to wrinkling and attracting static electricity, affecting the wearing experience and appearance.

[0003] To improve the moisture-wicking and quick-drying properties of fabrics, the industry often uses moisture-wicking and quick-drying finishing agents for post-treatment. These finishing agents mostly have a polyester structure, typically using terephthalic acid as a dibasic acid monomer. The rigid benzene ring structure of these agents means that the resulting moisture-wicking and quick-drying agents are mostly solid at room temperature. When used for fabric finishing, the dispersion stability is poor, affecting not only the uniformity of the finishing effect but also the softness and feel of the fabric. To simultaneously improve the softness and feel of the fabric, the industry often uses polysiloxanes to modify the moisture-wicking and quick-drying agents. However, linear polysiloxanes, the core raw material for modification, are usually prepared by anionic ring-opening polymerization of siloxane rings under the action of an alkaline initiator. The initiator performance directly determines the polymerization efficiency, product performance, and the amount of oligomeric rings remaining. For example, during the polymerization reaction of siloxanes, oligomeric rings with potential environmental risks, such as octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecylcyclohexasiloxane (D6), are easily left behind. Meanwhile, traditional alkali initiators are mostly alkali metal hydroxides, whose metal cations easily encapsulate the active end groups of anions, which leads to a decrease in polymerization activity. In order to ensure that the polymerization reaction proceeds fully, it is necessary to control the polymerization temperature (usually above 135°C) and extend the reaction time. However, high temperature conditions will further promote the occurrence of chain end biting reaction, resulting in a significant increase in the content of oligomeric rings in the product, which makes it difficult to meet increasingly stringent environmental protection requirements.

[0004] To optimize polymerization conditions, the industry has attempted to use initiators with significant steric hindrance, such as tetramethylammonium hydroxide. While these initiators can improve polymerization activity and lower the reaction temperature to around 110°C, they leave behind volatile substances like trimethylamine, exacerbating the pungent odor of the product and limiting their widespread application. Existing research has also explored improving polymerization by adding auxiliary reagents. For example, X. Gao et al. reported in *Pharmacopoeia Sulfur* that adding crown ethers to complex alkali metal ions in the anionic ring-opening polymerization of methylphenylcyclosiloxanes can increase the polymerization rate and conversion rate. However, this also increases the probability of chain-end biting reactions, leading to an increase in the formation of cyclopentasiloxanes. This is because the closed cyclic structure of the crown ether has an excessively strong complexing ability for metal ions, resulting in overly high anionic activity at the polymerization active center, which in turn exacerbates side reactions.

[0005] At the environmental regulatory level, the EU's REACH Regulation (Registration, Evaluation, Authorization and Restriction of Chemicals) clearly stipulates that from June 2026, the concentration of D4, D5, and D6 in textiles must be strictly controlled below 0.1%. However, existing moisture-wicking and softening finishing technologies generally suffer from problems such as excessive oligomeric cyclic residues, difficulty in balancing hand feel and moisture-wicking performance, and environmentally unfriendly polymerization processes, failing to meet regulatory requirements and market demands. Therefore, developing a fabric finishing technology that combines low cyclic residues, excellent environmental performance, superior moisture-wicking and softening effects, and compatibility with various mainstream fibers has become a pressing technical challenge in the field of textile auxiliaries. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a low-cyclic environmentally friendly moisture-absorbing and quick-drying fabric softener, its preparation method, and its application.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a method for preparing a low-cyclic-component, environmentally friendly, moisture-wicking, quick-drying fabric softener, comprising the following steps: S1. Cyclohexylamine, an acid-binding agent, and a catalyst are mixed, and an alkylating agent is added. The reaction is carried out to obtain a metal ion complex catalyst. The molar ratio of cyclohexylamine to the alkylating agent is 1:(2.3-2.5). S2. Mix the dimethylsiloxane mixed cyclic compound and the epoxy end-capping agent, add the alkali and the metal ion complexing catalyst, and react to obtain a double-terminated epoxy silicone oil intermediate. S3. Mix the diacid monomer, the diamine monomer and the catalyst, and react to obtain a bi-amino-terminated polyamide intermediate; the diacid monomer includes carboxyl-terminated polybutadiene. S4. Mix the double-terminated epoxy silicone oil intermediate and the double-terminated amino polyamide intermediate, and react to obtain moisture-absorbing and quick-drying softener crude oil. S5. Emulsify the crude oil of the moisture-absorbing and quick-drying fabric softener to obtain the low-cyclic environmentally friendly moisture-absorbing and quick-drying fabric softener.

[0008] The preparation method of this invention, through unique molecular structure design, successfully prepares a low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener that integrates high-end environmental friendliness, excellent moisture absorption and quick-drying properties, durable washability, and excellent process applicability. Firstly, this invention synthesizes a specific metal ion complexing catalyst (N,N-bis(2-propoxyethyl)cyclohexylamine). This catalyst moderately complexes with the metal ions in the polymerization system using nitrogen and oxygen atoms. This moderate complexing not only activates the initiator and improves the ring-opening polymerization efficiency of dimethylsiloxane mixed cyclic compounds (DMC) at lower temperatures, but also avoids the side reaction of "biting back" ring formation at the active chain ends caused by excessive complexation. Therefore, it significantly inhibits the formation and residue of oligocyclic cyclosiloxanes such as octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecylcyclohexasiloxane (D6) from the source of reaction kinetics. Secondly, this invention achieves precise molecular-level design by accurately controlling the ratio and connection method of "flexible hydrophobic segments" and "hydrophilic active groups," providing durable and efficient moisture-wicking and quick-drying finishing functions for different fibers such as cotton, polyester, and nylon, achieving an optimal balance of hydrophilicity, softness, and compatibility with fiber / auxiliary systems. Furthermore, this invention forms a block structure with a flexible hydrophobic core and hydrophilic connecting arms through an epoxy-amino ring-opening reaction between double-terminated epoxy silicone oil and double-terminated amino polyamide. During fabric finishing, the siloxane segments impart a soft hand feel, while the polar polyamide segments are anchored to the fiber surface, with their hydrophilic polyether segments aligning outwards to construct a durable and uniform hydrophilic moisture-wicking network. This not only endows the product with excellent wash resistance and rapid moisture-wicking performance but also ensures its high chemical stability, enabling it to adapt well to complex and variable actual dyeing and finishing processes, and is compatible with various textile auxiliaries, significantly reducing risks in production applications.

[0009] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, the molar ratio of cyclohexylamine and the alkylating agent is 1:2.3.

[0010] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, in step S1, the acid-binding agent includes potassium hydroxide; and / or, in step S1, the catalyst includes potassium iodide; and / or, in step S1, the alkylating agent includes 1-chloro-2-propoxyethane; and / or, in step S1, the molar ratio of the alkylating agent, acid-binding agent, and catalyst is 1:(1.1-1.2):(0.05-0.1); and / or, in step S1, a solvent is further added to the reaction; the solvent includes methyl isobutyl ketone; the mass of the solvent is 60%-70% of the total mass of the reaction system.

[0011] Preferably, the molar ratio of the alkylating agent, acid-binding agent, and catalyst is 1:1.2:0.1.

[0012] Preferably, the mass of the solvent is 65% of the total mass of the reaction system.

[0013] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-absorbing and quick-drying softener of the present invention, in step S2, the structural formula of the double-terminated epoxy silicone oil intermediate is shown in formula (I): Formula (I); in, m The value range is 250-300.

[0014] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-absorbing and quick-drying fabric softener of the present invention, in step S2, the epoxy end-capping agent comprises 1,1,3,3-tetramethyl-1,3-bis(3-(2,3-epoxypropoxy)propyl)disiloxane; and / or, in step S2, based on the dimethylsiloxane chain segments of the dimethylsiloxane mixed ring, the molar ratio of the dimethylsiloxane mixed ring to the epoxy end-capping agent is (250-300):1; and / or, in step S2, the base comprises sodium hydroxide; and / or, in step S2, the mass fraction of the base in the reaction system is 400ppm-500ppm; and / or, in step S2, the molar ratio of the base to the metal ion complexing catalyst is 1:(2-3).

[0015] Preferably, the molar ratio of the dimethylsiloxane mixed cyclic compound to the epoxy end-capping agent is 265:1, based on the dimethylsiloxane chain segments of the dimethylsiloxane mixed cyclic compound.

[0016] Preferably, the base has a mass fraction of 467 ppm in the reaction system.

[0017] Preferably, the molar ratio of the alkali to the metal ion complexing catalyst is 1:2.5.

[0018] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, in step S3, the molecular weight of the carboxyl-terminated polybutadiene is 800-1500.

[0019] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, in step S3, the structural formula of the carboxyl-terminated polybutadiene is HOOC-R1-COOH; wherein, the structure of R1 is as shown in formula (II): Formula (II); in, a + b The value range is 7-9.

[0020] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, in step S3, the diacid monomer further includes maleic anhydride; the molar fraction of maleic anhydride in the diacid monomer is 0-50%; and / or, in step S3, the diamine monomer includes polyetheramine; the molecular weight of the polyetheramine is 800-1000; and / or, in step S3, the molar ratio of the diacid monomer to the diamine monomer is (0.85-0.9):1; and / or, in step S3, the catalyst includes p-toluenesulfonic acid; and / or, in step S3, the mass of the catalyst is 0.1%-0.2% of the total mass of the reaction system; and / or, in step S3, a solvent is added to the reaction; the solvent includes methyl isobutyl ketone; the mass of the solvent is 20%-40% of the total mass of the reaction system.

[0021] Preferably, the polyetheramine has the structural formula H2N-R2-NH2; wherein, the structure of R2 is as shown in formula (III): Formula (III); in, c + e The value range is 5-7. d The value range is 12-13.

[0022] Preferably, the molar fraction of maleic anhydride in the diacid monomer is selected according to the target fabric type: when used for cotton fabrics, the molar fraction of maleic anhydride in the diacid monomer is 0-8%; when used for polyester fabrics, the molar fraction of maleic anhydride in the diacid monomer is 35%-50%; and when used for nylon fabrics, the molar fraction of maleic anhydride in the diacid monomer is 15%-50%.

[0023] More preferably, when used in cotton fabrics, the molar fraction of maleic anhydride in the dicarboxylic acid monomer is 0; when used in polyester fabrics, the molar fraction of maleic anhydride in the dicarboxylic acid monomer is 40%; and when used in nylon fabrics, the molar fraction of maleic anhydride in the dicarboxylic acid monomer is 25%.

[0024] Preferably, the polyetheramine has a molecular weight of 900.

[0025] Preferably, the molar ratio of the dicarboxylic acid monomer to the diamine monomer is 0.88:1.

[0026] Preferably, the mass of the catalyst is 0.1% of the total mass of the reaction system.

[0027] Preferably, the mass of the solvent is 30% of the total mass of the reaction system.

[0028] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, in step S3, the structural formula of the double-terminated amino polyamide intermediate is H2N-R3-NH2, wherein the structure of R3 is as shown in formula (IV): Formula (IV); in, p + q The value range is 3-5.

[0029] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, in step S4, the structural formula of the crude oil of the moisture-wicking and quick-drying fabric softener is as shown in formula (V): Formula (V); in, m The value range is 250-300. n The value range is 2-3.

[0030] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying softener of the present invention, in step S4, the mass ratio of the bi-terminated epoxy silicone oil intermediate to the bi-terminated amino polyamide intermediate is (1-2):1; and / or, in step S4, a solvent is also added to the reaction; the solvent includes isopropanol.

[0031] Preferably, the mass ratio of the double-terminated epoxy silicone oil intermediate to the double-terminated amino polyamide intermediate is 1.8:1.

[0032] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of the present invention, in step S5, the emulsification is carried out by adding an emulsifier to the moisture-wicking and quick-drying fabric softener crude oil and stirring at high speed; the emulsifier includes isotridecyl alcohol polyoxyethylene ether and isodecayl alcohol polyoxyethylene ether; the mass ratio of isotridecyl alcohol polyoxyethylene ether to isodecayl alcohol polyoxyethylene ether is (1.5-4):1; the mass of the emulsifier is 8%-15% of the mass of the moisture-wicking and quick-drying fabric softener crude oil.

[0033] Preferably, the mass ratio of the isomeric tridecyl alcohol polyoxyethylene ether to the isomeric decadecyl alcohol polyoxyethylene ether is 7:3.

[0034] Preferably, the mass of the emulsifier is 11% of the mass of the moisture-wicking and quick-drying softener crude oil.

[0035] In a preferred embodiment of the preparation method of the low-cyclic environmentally friendly moisture-absorbing and quick-drying fabric softener of the present invention, in step S1, the reaction temperature is 100℃-120℃ and the time is 2h-10h; and / or, in step S2, the reaction temperature is 70℃-95℃ and the time is 5h-6h; and / or, in step S3, the reaction temperature is 110℃-120℃ and the time is 8h-10h; and / or, in step S4, the reaction temperature is 80℃-85℃ and the time is 12h-15h.

[0036] Secondly, the present invention provides a low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener prepared by the preparation method described above.

[0037] Thirdly, the present invention provides the application of the aforementioned low-cyclic environmentally friendly moisture-wicking and quick-drying softener in fabric finishing.

[0038] In a preferred embodiment of the application described in this invention, the fabric is a cotton fabric, a polyester fabric, or a nylon fabric.

[0039] Compared with existing technologies, the beneficial effects of this invention are as follows: First, the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener prepared by the method of this invention has a low cyclic content, making it environmentally friendly. Through precise control of the polymerization process using a dedicated complexing catalyst, the content of restricted cyclic siloxanes such as octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecylcyclohexasiloxane (D6) in the product is below the detection limit (<100 mg / kg), fully meeting the requirements of international environmental regulations such as REACH, and achieving green production while ensuring performance. Second, the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener prepared by the method of this invention can significantly improve the water absorption rate, drip diffusion speed, wicking height, and drying rate of cotton, polyester, and nylon fabrics before and after washing. Furthermore, the unique silicone-polyamide block structure simultaneously provides the smooth and soft feel of siloxanes and the strong bonding force between polyamide and fibers, enabling fabrics to achieve a comfortable feel while possessing excellent resistance to household washing. Meanwhile, the low-cyclic, environmentally friendly, moisture-wicking, quick-drying softener emulsion obtained by the preparation method of this invention exhibits high chemical stability. It remains stable over a wide pH range and in the presence of common dyeing and finishing auxiliaries (such as alkalis, salts, surfactants, and dyes), and is not prone to demulsification, oil floating, or stratification. This significantly reduces the application risk in complex dyeing and finishing processes and improves production efficiency and first-pass success rate. Furthermore, the preparation method of this invention employs solution polymerization, with a reaction temperature significantly lower than that of traditional melt polycondensation. The conditions are mild, the self-made catalyst is highly efficient, shortening the silicone oil polymerization time. The overall process flow is clear, easy to control, and suitable for large-scale production. Detailed Implementation

[0040] To better illustrate the objectives, technical solutions, and advantages of this invention, the invention will be further described below with reference to specific embodiments. Those skilled in the art should understand that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] The following description, in conjunction with specific embodiments, illustrates the practical effects of the present invention.

[0042] Unless otherwise specified, the experimental methods used in the examples are conventional methods; the materials, reagents, equipment, etc. used are all commercially available unless otherwise specified.

[0043] The raw materials used in the following embodiments and comparative examples are described below, but are not limited to these materials: Dimethylsiloxane mixed cyclic compounds (DMC) were purchased from Dow Silicones (Zhangjiagang) Co., Ltd., model number PMX-0344, wherein the mass fractions of octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecylcyclohexasiloxane (D6) were 75%, 15%, and 10%, respectively. Carboxyl-terminated polybutadiene (CTPB) was purchased from Hubei Kemaidi Chemical Co., Ltd., model CTPB-1000, molecular weight 1000, viscosity at 25℃ 2500mPa·s; Polyetheramine, purchased from Zhangjiagang Top Chemical Co., Ltd., model ED-900, molecular weight 900, amine value 2.1 mmol / g; Isotridecyl alcohol polyoxyethylene ether, model TO-8, was purchased from BASF (China) Co., Ltd. Isomeric deca-ol polyoxyethylene ether, model XL-50, purchased from BASF (China) Co., Ltd. The CAS numbers of the remaining reagents are shown below: Cyclohexylamine, CAS No. 108-91-8; Potassium hydroxide, CAS No. 1310-58-3; Potassium iodide, CAS No. 7681-11-0; Methyl isobutyl ketone, CAS No. 108-10-1; 1-Chloro-2-propoxyethane, CAS No. 42149-74-6; Anhydrous magnesium sulfate, CAS No. 7487-88-9; Ethyl acetate, CAS No. 141-78-6; 1,1,3,3-Tetramethyl-1,3-bis(3-(2 3-Epoxypropoxypropyldisiloxane, CAS No. 126-80-7; Sodium hydroxide, CAS No. 1310-73-2; Maleic anhydride, CAS No. 108-31-6; p-Toluenesulfonic acid, CAS No. 104-15-4; Isopropanol, CAS No. 67-63-0; Acetic acid, CAS No. 64-19-7; 15-crown-5, CAS No. 33100-27-5; Terephthalic acid, CAS No. 100-21-0.

[0044] The specific test methods used for viscosity and solids content in the following examples and comparative examples are as follows: (1) Viscosity was tested at 25℃ using the NDJ-8S digital rotational viscometer from the Shanghai Institute of Geosciences.

[0045] (2) The solid content was tested according to the standard HG / T 4266-2011 "Textile Dyeing and Finishing Auxiliaries - Determination of Solid Content".

[0046] Example 1: This embodiment provides a low-cyclic-component, environmentally friendly, moisture-wicking, quick-drying fabric softener, the preparation method of which includes the following steps: S1. Preparation of metal ion complex catalyst (N,N-bis(2-propoxyethyl)cyclohexylamine) (1) In a 1L four-necked flask equipped with an electric stirrer, reflux condenser, constant pressure dropping funnel, thermometer and nitrogen inlet and outlet, add 348 mmol cyclohexylamine, 961 mmol potassium hydroxide (KOH) acid-binding agent, 80.1 mmol potassium iodide (KI) catalyst and 371 g methyl isobutyl ketone (MIBK) solvent; turn on the stirrer and introduce nitrogen for protection, heat to 115℃; at 115℃, slowly and uniformly add 801 mmol alkylating agent 1-chloro-2-propoxyethane dropwise over 5 hours, and continue to react at 115℃ for 2 hours after the addition is completed; In step (1) above, the molar ratio of cyclohexylamine to alkylating agent is 1:2.3, and the molar ratio of alkylating agent, acid-binding agent and catalyst is 1:1.2:0.1; the mass of solvent is 65% of the total mass of the reaction system.

[0047] (2) After the reaction was completed, the system was cooled to room temperature, and the quaternary ammonium salt generated by water extraction was added to the system after the reaction. The mixture was separated, the oil phase was collected, evaporated and concentrated, dried with anhydrous magnesium sulfate, filtered, and the product was separated by silica gel column using ethyl acetate as the eluent. Finally, ethyl acetate was evaporated and removed under reduced pressure of 30℃ and 10kPa to obtain a purified yellow transparent liquid as a metal ion complexing catalyst. The yield was calculated to be 76.4%.

[0048] S2. Preparation of bi-terminated epoxy silicone oil intermediate (1) In a 500mL three-necked flask equipped with a stirrer, reflux condenser and thermometer, add 300g of dimethylsiloxane mixed cyclic compound (DMC) and 5.54g of epoxy end-capping agent 1,1,3,3-tetramethyl-1,3-bis(3-(2,3-epoxypropoxy)propyl)disiloxane, stir, heat to 80℃, add 0.14g of pre-mixed sodium hydroxide and 2.38g of the metal ion complexing catalyst prepared in step S1, and keep the reaction at the temperature for 6h; In step (1) above, the molar ratio of DMC (based on chain segments) to epoxy end-capping agent is 265:1; the mass fraction of sodium hydroxide in the system is 467 ppm; and the molar ratio of sodium hydroxide to metal ion complexing catalyst is 1:2.5.

[0049] (2) Finally, under reduced pressure of 80℃ and 5kPa, the metal ion complexing catalyst in the system was removed by distillation for 30 min to obtain a colorless and transparent double-terminated epoxy silicone oil intermediate. Its viscosity was measured to be 650 mPa·s using a rotational viscometer at 25℃, and its theoretical maximum molecular weight was 2×10⁻⁶. 4 .

[0050] S3. Preparation of bi-amino-terminated polyamide intermediates (1) In a 1L four-necked flask equipped with a stirrer, water separator, reflux condenser and thermometer, add 200mmol of carboxyl-terminated polybutadiene (CTPB) of dicarboxylic acid monomer, 227mmol of polyetheramine of diamine monomer, 0.58g of p-toluenesulfonic acid catalyst (PTSA) and 173g of methyl isobutyl ketone (MIBK) solvent, stir and heat slowly until the solid is completely dissolved; In step (1) above, the molar ratio of the dicarboxylic acid monomer to the diamine monomer is 0.88:1; the total mass of the reaction system is 578g; and the mass of the catalyst and the solvent are 0.1% and 30% of the total mass of the reaction system, respectively.

[0051] (2) The temperature was further increased to 115℃ and refluxed at this temperature for 9 hours. During this period, the generated water was continuously separated and removed using a water separator. After the reaction was completed, the temperature was lowered to 80℃ and maintained under reduced pressure at 80℃ and 5 kPa for 1 hour to evaporate the residual water and solvent in the system, yielding an orange-yellow transparent viscous liquid intermediate of a diamine-terminated polyamide with a viscosity of 1.33 × 10⁻⁶ at 25℃. 4 mPa·s.

[0052] S4. Preparation of moisture-absorbing and quick-drying softener crude oil In a 500 mL three-necked flask equipped with a stirrer, reflux condenser, and thermometer, 133.3 g of the double-epoxy-terminated silicone oil intermediate prepared in step S2, 73.3 g of the double-amino-terminated polyamide intermediate prepared in step S3, and 93.3 g of isopropanol were added. The mixture was stirred and heated to 80 °C, and the reaction was maintained at this temperature for 12 h to obtain a yellow, transparent, viscous liquid, a moisture-absorbing and quick-drying softener crude oil with a viscosity of 7.9 × 10⁻⁶ at 25 °C. 4 mPa·s.

[0053] S5. Preparation of low-cyclic-component, environmentally friendly, moisture-wicking, quick-drying fabric softener Add 90g of the moisture-absorbing and quick-drying softener crude oil prepared in step S4 above, 5.6g of emulsifier TO-8 and 2.4g of emulsifier XL-50 to a beaker, turn on high speed stirring, slowly add 30g of 5% acetic acid aqueous solution, and then slowly add 72g of deionized water for dilution to obtain a transparent, slightly white and blue liquid low-cyclic environmentally friendly moisture-absorbing and quick-drying softener with a solid content of 36.4%.

[0054] Example 2: The only difference between the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener in Example 2 and Example 1 is that the amount of reactants used in step S1 is different, as shown in Table 1. Table 1. Reactant amounts, product states, and yields in step S1 of Examples 1 and 2. The other steps are the same as in Example 1.

[0055] Examples 3-7: The preparation methods of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener in Examples 3-7 differ from those in Example 1 only in that the reactants and their amounts are different in steps S3, S4 and S5, as shown in Table 2; the other steps are the same as in Example 1.

[0056] Table 2. Reactants, amounts, and product states in steps S3, S4, and S5 of Examples 1 and 3-7. Comparative Example 1: The only difference between the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener in Comparative Example 1 and Example 5 is that the amount of reactants used in step S1 is different, as shown in Table 3: Table 3. Reactant amounts, product states, and yields in step S1 of Example 5 and Comparative Example 1. The other steps are the same as in Example 5.

[0057] Step S2 yields a colorless and transparent double-terminated epoxy silicone oil intermediate with a viscosity of 230 mPa·s; Step S5 yields a transparent, slightly bluish-white liquid, low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener with a solid content of 30.2%.

[0058] Comparative Example 2: The only difference between the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener in Comparative Example 2 and Example 5 is that the amount of reactants used in step S1 is different, as shown in Table 4: Table 4. Reactant amounts, product states, and yields in step S1 of Example 5 and Comparative Example 2. The other steps are the same as in Example 5.

[0059] Step S2 yields a colorless and transparent double-terminated epoxy silicone oil intermediate with a viscosity of 490 mPa·s; Step S5 yields a transparent, slightly bluish-white liquid, low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener with a solid content of 33.6%.

[0060] Comparative Example 3: The only difference between the preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener of Comparative Example 3 and Example 5 is that in step S2, 2.38g of metal ion complexing catalyst is replaced with 1.93g of crown ether 15-crown-5; the other steps are the same as in Example 5.

[0061] Step S2 yields a colorless and transparent double-terminated epoxy silicone oil intermediate with a viscosity of 720 mPa·s; Step S5 yields a transparent, slightly bluish-white liquid, low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener with a solid content of 36.5%.

[0062] Comparative Example 4: The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener in Comparative Example 4 differs from that in Example 5 only in that the reactants and their amounts are different in steps S3, S4 and S5, as shown in Table 5; the other steps are the same as in Example 5.

[0063] Table 5. Reactants, amounts, and product states in steps S3, S4, and S5 of Example 5 and Comparative Example 4. Comparative Example 5: The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener in Comparative Example 5 differs from that in Example 5 only in that the reactants and their amounts are different in steps S3, S4 and S5, as shown in Table 6; the other steps are the same as in Example 5.

[0064] Table 6. Reactants, amounts, and product states in steps S3, S4, and S5 of Example 5 and Comparative Example 5. Test example: 1.1 Cyclic content test Test method: According to standard GB / T 40323-2021 "Determination of octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5) and dodecylcyclohexasiloxane (D6) in textile dyeing and finishing auxiliaries", the low-cyclic environmentally friendly moisture-absorbing and quick-drying softeners of the above examples and comparative examples were ultrasonically extracted with acetonitrile / methanol (v / v=1:1) at 60℃ for 2h, and then analyzed by GC-MS. The test results are shown in Table 7.

[0065] Table 7. Test results of the ring content of low-ring-content environmentally friendly moisture-wicking and quick-drying fabric softener. Note: ND = Not detected (Laboratory report limit = 100 mg / kg).

[0066] As shown in Table 7, none of the octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), or dodecylcyclohexasiloxane (D6) were detected in the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softeners prepared in the embodiments of the present invention. This indicates that the preparation method of the present invention can effectively inhibit the formation of cyclic compounds, and the products fully meet the stringent requirements of REACH and other environmental regulations for cyclic compounds. In contrast, the moisture-wicking and quick-drying fabric softeners of Comparative Examples 1-3 all contained at least one cyclic compound with a content exceeding 1000 mg / kg (i.e., 0.1%). Specifically, in Comparative Example 1, the amount of alkylating agent used was below the lower limit of the range defined in this invention, resulting in the generation of a large number of monosubstituted byproducts with no or weak complexing ability during catalyst synthesis. This prevented effective stabilization of the polymerization active center, leading to incomplete polymerization and a large amount of unreacted oligocyclic rings remaining in the product (D4 up to 1239 mg / kg, D5 up to 637 mg / kg). In Comparative Example 2, the amount of alkylating agent used was above the upper limit of the range defined in this invention, resulting in the generation of excessive quaternary ammonium salt products during catalyst synthesis. Some of these were washed away by water during subsequent product purification, reducing the yield. Furthermore, the remaining undissolved quaternary ammonium salts lacked complexing ability, similarly decreasing the polymerization activity. In Comparative Example 3, the crown ether catalyst had excessively strong complexing ability for metal ions, which promoted the "biting back" ring-forming side reaction, resulting in even more oligocyclic rings (especially D5, up to 1453 mg / kg). The metal ion complexing catalyst used in Comparative Examples 4 and 5 was the same as that used in Example 5, and had no effect on the cyclic content in the prepared low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener. Therefore, it can be seen that the metal ion complexing catalyst with the specific structure of this invention can form a moderate and stable complex with metal ions, which can effectively activate the siloxane anionic active species, promote the ring-opening polymerization of DMC rings, and inhibit the side reaction of "biting back" cyclization at the end of the active chain, thereby fundamentally inhibiting the formation of rings from a reaction kinetic perspective.

[0067] 2. Moisture absorption and quick-drying test The low-cyclic environmentally friendly moisture-wicking and quick-drying softener used in the above examples and comparative examples was applied to cotton, polyester, and nylon fabrics (using a one-dip-one-paste method, followed by setting and drying at 160°C for 90 seconds). For cotton fabrics, white 32S cotton knitted jersey was used; for polyester fabrics, white 150D polyester knitted fabric was used; and for nylon fabrics, white 70D nylon plain knitted fabric was used. For cotton fabrics, the softener dosage was 50 g / L; for polyester and nylon fabrics, the softener dosage was 20 g / L.

[0068] The treated fabric samples were washed according to standard GB / T 8629-2017 "Textiles - Household washing and drying procedures for testing" (using a type A washing machine, standard detergent 3, washing 5 times consecutively according to program 4N, and then air drying). Then, performance tests were conducted on the fabric samples before washing and after 5 washes according to standard GB / T 21655.1-2023 "Textiles - Evaluation of moisture absorption and quick-drying properties - Part 1: Single-item combination test method". The test items included water absorption rate, water droplet diffusion time, drying rate, and wicking height.

[0069] The following are the specific testing methods for each performance test: (1) Water absorption rate test Test method: Take a sample and weigh its original mass m0. Immerse it in water for 5 minutes, then hang it vertically until it stops dripping and weigh its wet weight m. Calculate the water absorption rate A using the following formula and round the result to 1%. Water absorption rate A = (m - m0) / m0 × 100%.

[0070] (2) Water droplet diffusion time test Test method: Fix the sample on the holder, use a dropper to drop 1 drop of water onto the sample, and record the time it takes for the water drop to spread completely. Round the result to 0.1s. If the water spread time is less than 1s, record it as "<1.0s"; if it is greater than 60s, record it as ">60s".

[0071] (3) Drying rate test Test method: 0.2 mL of water is dropped into the center of the sample, the initial wet weight is weighed and then suspended. The sample is weighed every 3 minutes until the moisture content is less than 10% or the time exceeds 60 minutes. The test ends when the moisture content is less than 10% or the time exceeds 60 minutes. The "evaporation rate-time" curve is plotted and the slope of the initial linear segment is fitted as the drying rate. The result is rounded to 0.01 g / h.

[0072] (4) Core suction height test Test method: Take long strip samples with the long side parallel to the warp and weft directions respectively, suspend them and immerse the lower end of the sample in water for 15mm, record the water absorption height after 30 minutes, round the result to 1mm, and finally take the larger value between the warp and weft directions.

[0073] Test results: The moisture absorption and quick-drying properties of cotton, polyester, and nylon fabrics treated with moisture-absorbing and quick-drying softener are shown in Tables 8, 9, and 10, respectively; where "blank" indicates untreated blank fabric samples.

[0074] Table 8 Results of the moisture absorption and quick-drying properties test of cotton fabrics Cotton fibers are inherently hydrophilic, but untreated cotton fabrics are prone to fiber swelling after absorbing moisture, locking the moisture inside and resulting in a slow drying rate (e.g., the drying rate of the blank sample was only 0.15 g / h). As can be seen from Table 8, the cotton fabrics treated with the low-cyclic environmentally friendly moisture-wicking and quick-drying softener of this invention exhibit comprehensively optimized moisture-wicking and quick-drying properties. Among them, the cotton fabrics treated with the low-cyclic environmentally friendly moisture-wicking and quick-drying softeners of Examples 1 and 3 showed excellent performance in all indicators before and after washing. The water droplet diffusion time was extremely short (<1.0s before washing), and the water absorption rate, drying rate, and wicking height were significantly higher than the blank sample, fully meeting the GB / T 21655.1-2023 moisture-wicking and quick-drying Class III standard. In contrast, Example 4 had a reduced CTPB component in its formula and a relatively higher proportion of hydrophilic segments, resulting in a more obvious swelling effect after the fiber absorbed moisture. This hindered the rapid evaporation of water to some extent, so its drying rate and other indicators were slightly inferior. The performance met the Class II standard, but it was still significantly better than the blank sample. This fully demonstrates that the low-cyclic environmentally friendly moisture-wicking and quick-drying softener of the present invention can specifically optimize the moisture-wicking and quick-drying performance of cotton fabrics by precisely balancing the proportion of hydrophilic and flexible segments.

[0075] Table 9 Results of moisture absorption and quick-drying properties test for polyester fabrics Polyester fibers are inherently hydrophobic; the blank sample showed almost no moisture absorption (78% water absorption rate), a water diffusion time greater than 60 seconds, and extremely low wicking height. As can be seen from Table 9, the surface properties of the polyester fabric were fundamentally altered after treatment with the low-cyclic environmentally friendly moisture-wicking and quick-drying softener of this invention. Among them, the polyester fabrics treated with the low-cyclic environmentally friendly moisture-wicking and quick-drying softener in Examples 6 and 7 exhibited excellent hydrophilicity (water absorption rate >270% before washing), a water droplet diffusion time of less than 1.0s, and significantly improved drying rate and wicking height. Both before and after washing, they consistently met the GB / T 21655.1-2023 moisture-wicking and quick-drying grade III standard. This indicates that the low-cyclic environmentally friendly moisture-wicking and quick-drying softener of the present invention can form a firm and uniform hydrophilic modified layer on the polyester surface through chemical bonding, giving it durable and efficient moisture-wicking and quick-drying capabilities. The performance of Example 5 was slightly inferior, with moisture-wicking and quick-drying performance meeting the GB / T 21655.1-2023 moisture-wicking and quick-drying grade II standard, but it was still far superior to the blank sample. In contrast, Comparative Example 5, due to its excessive proportion of MA in the preparation steps and insufficient CTPB flexible segments, resulted in poor compatibility between the product and silicone oil, unstable emulsion, uneven film formation on the fiber, and poor fastness. Its finishing effect was significantly worse (water diffusion time as long as 4.1s), and its washability decreased significantly, only meeting the Class I standard. This fully demonstrates the importance of the specific structural design of this invention for achieving excellent and durable functions on hydrophobic fibers.

[0076] Table 10 Results of moisture absorption and quick-drying tests on nylon fabrics Nylon itself has a certain degree of hydrophilicity, but its surface wettability is poor (the water diffusion time of the blank sample is also greater than 60s). As can be seen from Table 10, the performance of nylon fabrics treated with the low-cyclic-content environmentally friendly moisture-wicking and quick-drying softener of the present invention is significantly improved. Specifically, the nylon fabrics treated with the low-cyclic-content environmentally friendly moisture-wicking and quick-drying softener in Examples 5 and 6 have a water diffusion time of less than 1.0s, a water absorption rate exceeding 250%, a fast drying rate, and a high wicking height, meeting the GB / T 21655.1-2023 moisture-wicking and quick-drying Class III standard before and after washing. Comparative Examples 1-3 mainly have excessive cyclic content; their moisture-wicking and quick-drying properties are not significantly different from Example 5, all meeting the Class III standard. The performance of Examples 3-4 meets the Class II standard. In contrast, the preparation steps of Comparative Example 4 introduced a rigid terephthalic acid structure, which has poor compatibility with the flexible structures of CTPB and polyetheramine in the system, making it difficult to form high molecular weight products. This resulted in insufficient performance of the final softener, with a water diffusion time as long as 29 seconds and low performance in all indicators, failing to meet the Class I standard. This comparison further illustrates that the good compatibility and synergistic effect of the flexible and hydrophilic segments in the softener molecule structure of this invention is the key to achieving efficient, long-lasting moisture absorption and quick-drying functions for nylon fabrics.

[0077] 3. Stability Test Test method: The low-cyclic environmentally friendly moisture-absorbing and quick-drying softener of the above examples and comparative examples was prepared into a working solution of 80 g / L with deionized water. Different dyeing and finishing auxiliaries (soda ash 3g / L, caustic soda 3g / L, sodium sulfate 3g / L, soaping agent 10g / L, fixing agent 10g / L, stiffening agent 10g / L, dye 10g / L, and working solution without any other reagents) were added respectively. The stability of the solution was observed (whether there was oil bleaching, layering, precipitation, flocculation, etc.).

[0078] Table 11 Stability test results of moisture-wicking and quick-drying fabric softener As can be seen from Table 11, the low-cyclic environmentally friendly moisture-wicking and quick-drying softener of the present invention exhibits excellent application tolerance and process adaptability. It can maintain a stable state in the presence of common dyeing and finishing auxiliaries such as soda ash, caustic soda, sodium sulfate, soaping agents, and color-fixing agents, without phenomena such as stratification, oil floating, or precipitation. However, in Comparative Example 4, the rigid structure introduced by terephthalic acid reduces the hydrophilic-lipophilic balance of the polyamide chain segments, resulting in the destruction of the emulsion protective layer under the action of electrolytes or surfactants, and the effective components are prone to precipitation, stratification, or flocculation. In Comparative Example 5, the excessively high proportion of maleic anhydride makes the polyamide intermediate too polar, resulting in poor compatibility with epoxy silicone oil, a fragile emulsion system, and a tendency to demulsify and float oil. The main difference between Comparative Examples 1-3 and Example 5 is the different cyclic content, which has little impact on the stability of the prepared moisture-wicking and quick-drying softener.

[0079] In summary, this invention, through unique molecular structure design, successfully synthesized a dedicated metal ion complexing catalyst, fundamentally inhibiting the formation and residue of cyclosiloxanes (D4, D5, D6), achieving "zero cyclic residue" in the product and fully meeting the most stringent environmental requirements of regulations such as REACH. Regarding the core polymer structure, this invention achieves precise molecular-level design by accurately controlling the ratio and connection method of "flexible hydrophobic segments" and "hydrophilic active groups," providing durable and efficient moisture-wicking and quick-drying finishing functions for different fibers such as cotton, polyester, and nylon, achieving an optimal balance of hydrophilicity, softness, and compatibility with fiber / auxiliary systems. Simultaneously, based on the constructed epoxy-amine reaction system, a chemically bonded silicone-polyamide block copolymer finishing layer is formed on the fiber surface. This not only endows the product with excellent wash resistance and rapid moisture-wicking and quick-drying properties but also ensures its high chemical stability, enabling it to adapt well to complex and variable actual dyeing and finishing process environments, and is compatible with various textile auxiliaries, significantly reducing risks in production applications.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A method for preparing a low-cyclic-component, environmentally friendly, moisture-wicking, quick-drying fabric softener, characterized in that, Includes the following steps: S1. Cyclohexylamine, an acid-binding agent, and a catalyst are mixed, and an alkylating agent is added. The reaction is carried out to obtain a metal ion complex catalyst. The molar ratio of cyclohexylamine to the alkylating agent is 1:(2.3-2.5). The metal ion complexing catalyst is N,N-bis(2-propoxyethyl)cyclohexylamine; S2. Mix the dimethylsiloxane mixed cyclic compound and the epoxy end-capping agent, add the alkali and the metal ion complexing catalyst, and react to obtain a double-terminated epoxy silicone oil intermediate. The structural formula of the double-terminated epoxy silicone oil intermediate is shown in formula (1): Equation (1); in, m The value range is 250-300; S3. Mix the diacid monomer, the diamine monomer and the catalyst, and react to obtain a bi-amino-terminated polyamide intermediate; the diacid monomer is carboxyl-terminated polybutadiene. The structural formula of the dual-terminated amino polyamide intermediate is H2N-R3-NH2; The structure of R3 is shown in equation (2): Equation (2); in, p + q The value range is 3-5; The structure of R2 is shown in equation (3): Equation (3); in, c + e The value range is 5-7. d The value range is 12-13; The structural formula of the carboxyl-terminated polybutadiene is HOOC-R1-COOH; the structure of R1 is shown in formula (4): Equation (4); in, a + b The value range is 7-9; S4. Mix the double-terminated epoxy silicone oil intermediate and the double-terminated amino polyamide intermediate, and react to obtain moisture-absorbing and quick-drying softener crude oil. The mass ratio of the double-terminated epoxy silicone oil intermediate to the double-terminated amino polyamide intermediate is (1-2):1; S5. Emulsify the crude oil of the moisture-absorbing and quick-drying fabric softener to obtain the low-cyclic environmentally friendly moisture-absorbing and quick-drying fabric softener.

2. The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener as described in claim 1, characterized in that, In step S1, the acid-binding agent comprises potassium hydroxide; and / or, in step S1, the catalyst comprises potassium iodide; and / or, in step S1, the alkylating agent comprises 1-chloro-2-propoxyethane; and / or, in step S1, the molar ratio of the alkylating agent, acid-binding agent, and catalyst is 1:(1.1-1.2):(0.05-0.1); and / or, in step S1, a solvent is further added to the reaction; the solvent comprises methyl isobutyl ketone; the mass of the solvent is 60%-70% of the total mass of the reaction system.

3. The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener as described in claim 1, characterized in that, In step S2, the epoxy capping agent comprises 1,1,3,3-tetramethyl-1,3-bis(3-(2,3-epoxypropoxy)propyl)disiloxane; and / or, in step S2, the molar ratio of the dimethylsiloxane mixed cyclic body to the epoxy capping agent is (250-300):1, based on the dimethylsiloxane chain segments of the dimethylsiloxane mixed cyclic body; and / or, in step S2, the base comprises sodium hydroxide; and / or, in step S2, the mass fraction of the base in the reaction system is 400ppm-500ppm; and / or, in step S2, the molar ratio of the base to the metal ion complexing catalyst is 1:(2-3).

4. The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener as described in claim 1, characterized in that, In step S3, the diamine monomer comprises a polyetheramine; the molecular weight of the polyetheramine is 800-1000; and / or, in step S3, the molar ratio of the diacid monomer to the diamine monomer is (0.85-0.9):1; and / or, in step S3, the catalyst comprises p-toluenesulfonic acid; and / or, in step S3, the mass of the catalyst is 0.1%-0.2% of the total mass of the reaction system; and / or, in step S3, a solvent is further added to the reaction; the solvent comprises methyl isobutyl ketone; the mass of the solvent is 20%-40% of the total mass of the reaction system.

5. The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener as described in claim 1, characterized in that, In step S4, a solvent is also added to the reaction; the solvent includes isopropanol.

6. The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener as described in claim 1, characterized in that, In step S5, the emulsification is performed by adding an emulsifier to the moisture-wicking and quick-drying softener crude oil and stirring at high speed. The emulsifier includes isotridecyl alcohol polyoxyethylene ether and isodecayl alcohol polyoxyethylene ether. The mass ratio of isotridecyl alcohol polyoxyethylene ether to isodecayl alcohol polyoxyethylene ether is (1.5-4):

1. The mass of the emulsifier is 8%-15% of the mass of the moisture-wicking and quick-drying softener crude oil.

7. The preparation method of the low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener as described in claim 1, characterized in that, In step S1, the reaction temperature is 100℃-120℃ and the time is 2h-10h; and / or, in step S2, the reaction temperature is 70℃-95℃ and the time is 5h-6h; and / or, in step S3, the reaction temperature is 110℃-120℃ and the time is 8h-10h; and / or, in step S4, the reaction temperature is 80℃-85℃ and the time is 12h-15h.

8. The low-cyclic environmentally friendly moisture-wicking and quick-drying fabric softener prepared by any of the preparation methods described in claims 1-7.

9. The application of the low-cyclic environmentally friendly moisture-wicking and quick-drying softener as described in claim 8 in fabric finishing.

10. The application as described in claim 9, characterized in that, The fabric is cotton, polyester, or nylon.

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