A low-foaming, ammonia-free penetrating composition, method of making and use

Abstract

The application provides a low-foam ammonia-free penetrating composition, a preparation method and application, and belongs to the technical field of penetrating agents. The composition comprises the following components in percentage by weight: 50-80% of isooctanol sodium sulfate, 5-15% of a surfactant, 2-6% of a defoaming agent, and the balance to 100% of a solvent; the surfactant comprises at least one of an organic silicon surfactant and a polyoxyethylene ether surfactant. The isooctanol sodium sulfate, the specific surfactant and the defoaming agent are used in combination, and the composition has strong penetrating power and low-foam characteristics. The preparation method of the isooctanol sodium sulfate is specified, and when the composition is used in a concentrated alkali solution, ammonia smell is not emitted, the composition is more friendly to operators and working environments, and the composition also has excellent stability in the concentrated alkali solution and can be applied to the mercerizing process of cotton fabrics.

Description

Technical Field

[0001] This application belongs to the field of penetrant technology, specifically relating to a low-foaming, ammonia-free penetrant composition, its preparation method, and its application. Background Technology

[0002] Mercerizing is a key process for improving the physical properties of cotton fabrics. Mercerizing can significantly enhance the dimensional stability, elasticity, softness, and comfort of cotton fabrics, improve their dye absorption and moisture absorption, increase strength and elongation, and reduce drawbacks such as high shrinkage and easy deformation. Currently, the industrial practice commonly uses a high-concentration sodium hydroxide solution (200-300 g / L) to treat cotton fabrics under mechanical tension. However, high-concentration alkaline solutions have high viscosity, high surface tension, and low penetration rates, easily causing "surface mercerizing" of the fabric. Furthermore, it also suffers from drawbacks such as long processing time, high energy consumption, and high subsequent washing load.

[0003] To address the problem of insufficient alkaline penetration, existing technologies typically add penetrants to the system to reduce surface tension and promote rapid and uniform penetration of the alkaline solution, thereby shortening the process time and improving mercerizing uniformity. However, conventional penetrants still have the following problems: (1) Odor and environmental hazards: Commercially available products are mostly anionic / nonionic surfactant compound systems, which generally have an irritating ammonia odor, resulting in a harsh working environment and high ammonia nitrogen content in wastewater, making end-of-pipe treatment difficult; (2) Uncontrolled foaming: They have strong foaming properties and easily form stable foam at the trough and rollers, leading to white spots on the fabric surface and fluctuations in operating tension; (3) Insufficient alkali resistance: They are prone to salting out or decomposition in high-concentration alkaline solutions, resulting in loss of penetration efficiency, etc.

[0004] Sodium isooctanol sulfate (EHS, CAS 126-92-1), as an anionic surfactant, has been adopted in the industry for "high alkali, rapid penetration" type of mercerizing penetrant formulations. For example, Chinese patent CN102277736B discloses a high alkali resistant mercerizing penetrant refining agent, the raw materials of which include 20-40% sodium isooctanol sulfate, 20-40% isomeric alcohol ether sulfonate, 5-15% alkyl glycoside, and 0-3% isopropanol, which can exhibit good penetrability and compatibility.

[0005] However, the traditional method for producing sodium octanol sulfate involves sulfonating isooctanol and aminosulfonic acid, neutralizing with sodium hydroxide, and then removing ammonia under vacuum. This process often results in incomplete removal of ammonia nitrogen and insufficient sodium salt conversion. When used as a penetrant, it can lead to a small amount of ammonia release or inconsistent penetrant performance between batches. Furthermore, as an anionic surfactant, this substance produces abundant foam. In shallow working solutions, foam overflows easily, and excessive foam accumulates on the surface, hindering fabric contact and preventing complete penetration of the alkali solution into the fibers. This negatively impacts mercerizing and ultimately leads to rework or extended alkali treatment time. While defoamers can solve the foaming problem, large dosages are required for effective defoaming. However, increased defoamer dosage under high-concentration alkali conditions can decrease penetration and alkali resistance.

[0006] Therefore, developing a penetrating composition with excellent permeability, high alkali resistance, low foaming properties, no ammonia odor, and excellent overall performance has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0007] To address the above problems, this application provides a low-foaming, ammonia-free permeating composition, its preparation method, and its application. The technical solution is as follows:

[0008] A low-foaming, ammonia-free penetrating composition, by total mass, comprises: 50-80% sodium isooctanol sulfate, 5-15% surfactant, 2-6% defoamer, and solvent to make up to 100%.

[0009] Further, by total mass, the composition of the low-foaming, ammonia-free penetrating composition includes: 60-75% sodium isooctanol sulfate, 7-10% surfactant, 3-5% defoamer, and solvent replenishment to 100%.

[0010] In one embodiment, the low-foaming, ammonia-free penetrating composition comprises, by total mass: 70-75% sodium isooctanol sulfate, 8-13% surfactant, 3-5% defoamer, and solvent to make up to 100%.

[0011] Furthermore, the sodium isooctanol sulfate is obtained by reacting isooctanol with SO3 gas.

[0012] Furthermore, the method for preparing sodium isooctanol sulfate includes the following steps: reacting isooctanol and gaseous SO3 in a falling film reactor.

[0013] Furthermore, the isooctanol flow rate in the falling film reactor is 10-18 kg·h. -1 Preferably 12-15 kg·h -1More preferably 13-14 kg·h -1 .

[0014] Furthermore, the volume fraction of SO3 in the falling film reactor is 0.5-10%, preferably 1-5%, and more preferably 1-3%.

[0015] Furthermore, the temperature inside the falling film reactor is 10-30℃, preferably 15-28℃, and more preferably 18-25℃.

[0016] Furthermore, the surfactant includes at least one of organosilicon surfactants and polyoxyethylene ether surfactants.

[0017] In one embodiment, the surfactant is a polyoxyethylene ether surfactant. Sodium isooctyl sulfate, as an anionic surfactant, can effectively emulsify natural oils and impurities on cotton fibers. Polyoxyethylene ethers are nonionic surfactants with low surface tension and rapid wetting ability, allowing them to spread quickly on the surface of cotton fibers, disrupting the wax layer and air film on the fiber surface, creating favorable conditions for further penetration of sodium isooctyl sulfate. Secondly, polyoxyethylene ethers can also prevent the re-aggregation of emulsion particles, ensuring the continuous unobstructed flow of penetration channels. They are stable in alkaline solutions and, in conjunction with sodium isooctyl sulfate, can achieve deeper and more uniform penetration. Furthermore, the polyoxyethylene segments in their molecular structure form a weak interfacial film at the gas-liquid interface, which can reduce foam stability, thereby inhibiting foam generation and promoting foam breakage, achieving good foam suppression or rapid defoaming effects.

[0018] In one embodiment, the surfactant is an organosilicon surfactant. Organosilicon surfactants not only have low static surface tension, but also reduce tension very quickly during the dynamic process of creating a new interface. When combined with sodium isooctyl sulfate, they can promote the wetting and defoaming of fabrics by the alkali solution in a short time.

[0019] Furthermore, the polyoxyethylene ether surfactants include, but are not limited to, at least one of 2-ethylhexanol polyoxyethylene ether, isomeric octyl alcohol polyoxyethylene ether, isomeric decayl alcohol polyoxyethylene ether, isomeric tridecyl alcohol polyoxyethylene ether, linear decayl alcohol polyoxyethylene ether, and ethylene oxide (EO) / propylene oxide (PO) block fatty alcohol ethers; preferably, isomeric decayl alcohol polyoxyethylene ether or linear decayl alcohol polyoxyethylene ether. Polyoxyethylene ethers with a ten-carbon structure exhibit superior permeability because short carbon chains lack sufficient hydrophobicity, resulting in weaker surface tension reduction and interfacial adsorption, leading to poor permeation. However, excessively long carbon chains decrease water solubility, easily causing precipitation and turbidity in highly alkaline solutions. Ten-carbon chain structures not only possess sufficient hydrophobicity to strongly reduce surface tension but also exhibit good water solubility to adapt to the harsh environment of mercerizing alkaline solutions, resulting in better permeation performance. Furthermore, ten-carbon branched structures cannot form stable liquid films, leading to increased foam instability and better foam suppression than linear ten-carbon structures.

[0020] Furthermore, the HLB value of the polyoxyethylene ether surfactant is 9-13, preferably 9-12. Exemplary commercially available products include BASF's isomeric deca-ol polyoxyethylene ether XL series XL-40 (HLB 10.5), XL-50 (HLB 11.5), and XL-70 (HLB 13), as well as isomeric deca-ol polyoxyethylene ether XP series XP-50 (HLB 11.5) and XP-70 (HLB 13), etc.

[0021] In a preferred embodiment, the polyoxyethylene ether surfactant has an HLB value of 9-10. Surfactants with an HLB value of 9-10 have shorter polyoxyethylene (EO) chains and relatively longer hydrocarbon chains (hydrophobic tails), resulting in liquid films with low strength and poor elasticity, and the foam produced is more prone to breakage.

[0022] Furthermore, the organosilicon surfactants include, but are not limited to, at least one of ternary copolymer organosilicon oil, polyether-modified trisiloxane, and polyether-modified polydimethylsilicone oil.

[0023] In one embodiment, the silicone surfactant is a ternary copolymer silicone oil.

[0024] Preferably, the cloud point of the surfactant is ≤60℃. Unless otherwise specified, the cloud point is measured by dissolving 5g of surfactant in 25g of diethylene glycol butyl ether solution (concentration 250g / L).

[0025] Furthermore, the defoamer is selected from at least one of phosphate esters, tributyl citrate, polyether defoamers, silicone defoamers, and acetylenic diol defoamers, preferably at least one of silicone defoamers, tributyl citrate, and acetylenic diol defoamers.

[0026] In one embodiment, the defoamer is a silicone-based defoamer and tributyl citrate; the mass ratio of the silicone-based defoamer to tributyl citrate is 1:4-10, preferably 1:6-9, and more preferably 1:8-9. Tributyl citrate is a small molecule ester with long-lasting foam suppression, preventing foam formation for an extended period; the silicone-based defoamer has extremely low surface tension, primarily exerting a rapid defoaming effect. The synergistic effect of both results in the best foam performance of the penetrating composition.

[0027] In one embodiment, the defoamer is a silicone-based defoamer and an acetylenic diol-based defoamer; the mass ratio of the silicone-based defoamer to the acetylenic diol defoamer is 1:4-10, preferably 1:6-9. Acetylene diol defoamers have extremely high diffusion coefficients. When a new interface is formed on the solution surface due to stirring, pumping, or other processes, acetylenic alcohol molecules can be rapidly adsorbed onto the newly formed interface at a particularly high speed, instantly reducing the surface tension at that point and thus defoaming. The defoaming effect is good, but the foam suppression effect is not as good as that of silicone-based defoamers. Combining the two can also give the penetrating composition good low-foaming performance.

[0028] Further, the solvent includes at least one of alcohol solvents, ester solvents, ether solvents, and water. The alcohol solvent is selected from at least one of diethylene glycol, glycerol, propylene glycol, polyacryl alcohol, and polyethylene glycol; the average molecular weight of the polyacryl alcohol is preferably 600-1000; the average molecular weight of the polyethylene glycol is preferably 400-600. The ester solvent is selected from at least one of ethylene glycol diacetate, ethyl lactate, and propylene glycol methyl ether acetate. The ether solvent is selected from at least one of ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, and dipropylene glycol dimethyl ether.

[0029] In one embodiment, the solvent comprises an alcohol solvent and water; preferably, the ratio of alcohol solvent to water is 1:1-3.

[0030] In one embodiment, the solvent comprises an ester solvent and water; preferably, the ratio of the ester solvent to water is 1:1-3.

[0031] Furthermore, this application also provides a method for preparing the low-foaming, ammonia-free penetrating composition, specifically by mixing sodium isooctanol sulfate, surfactant, defoamer, and solvent evenly.

[0032] Furthermore, this application also provides the application of the aforementioned low-foaming, ammonia-free penetrating composition in the mercerizing process of cotton fabrics.

[0033] The beneficial effects of this invention are:

[0034] (1) The penetrating composition of the present invention can exhibit strong penetrating power and low foaming characteristics by compounding sodium isooctanol sulfate, specific surfactants and defoamers.

[0035] (2) The present invention specifies the preparation method of sodium isooctyl sulfate, which avoids the use of ammonia in the preparation process. The prepared composition will not release an ammonia odor when used in concentrated alkaline solution, which is more friendly to operators and working environment.

[0036] (3) The present invention optimizes the types and relative amounts of components, which not only improves the permeability and low foaming performance, but also shows excellent stability in concentrated alkaline solutions. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] In the following examples, unless otherwise specified, the sodium isooctanol sulfate was purchased from Shanghai Youyang Industrial Co., Ltd. / Dongming Jujin Chemical Co., Ltd. Sodium isooctanol sulfate is prepared by reacting isooctanol with SO3 gas. The preparation method includes the following steps: isooctanol and SO3 gas are introduced into a falling film reactor for reaction; the isooctanol flow rate is 10-18 kg·h. -1 Preferably 12-15 kg·h -1 More preferably 13-14 kg·h -1 The volume fraction of SO3 is 0.5-10%, preferably 1-5%, more preferably 1-3%; the temperature inside the reactor is 10-30℃, preferably 15-28℃, more preferably 18-25℃.

[0039] The silicone defoamer is a polyether-modified silicone, purchased from Guangzhou Shuangyue Industrial Co., Ltd., model EP-11. The acetylenic diol defoamer is ethoxyacetylenic diol, purchased from Shanghai Canghong Industrial Co., Ltd., model BETTERSOL607. The ternary copolymer silicone oil surfactant is purchased from Guangdong Honghao Chemical Co., Ltd., model HT-6012L, CAS: 27306-78-1.

[0040] Example 1

[0041] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0042] Sodium isooctanol sulfate 70.00%;

[0043] Isomeric deca-ol polyoxyethylene ether (XL-40) 8.49%;

[0044] 0.33% silicone defoamer;

[0045] Tributyl citrate 2.79%;

[0046] Propylene glycol 8.56%;

[0047] Replenish water to 100%.

[0048] The preparation method of the low-foaming, ammonia-free permeation composition is as follows: mix sodium isooctanol sulfate and other components of the composition evenly.

[0049] Example 2

[0050] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0051] Sodium isooctanol sulfate 70.00%;

[0052] Isomeric deca-ol polyoxyethylene ether (XL-40) 8.49%;

[0053] 0.33% silicone defoamer;

[0054] Tributyl citrate 2.79%;

[0055] Polyacryl alcohol (average molecular weight 600) 8.56%;

[0056] Replenish water to 100%.

[0057] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0058] Example 3

[0059] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0060] Sodium isooctanol sulfate 70.00%;

[0061] Linear deca-ol polyoxyethylene ether (XP-50) 8.49%;

[0062] 0.33% silicone defoamer;

[0063] Tributyl citrate 2.79%;

[0064] Propylene glycol 8.56%;

[0065] Replenish water to 100%.

[0066] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0067] Example 4

[0068] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0069] Sodium isooctanol sulfate 70.00%;

[0070] Ternary copolymer silicone oil surfactant 8.49%;

[0071] 0.33% silicone defoamer;

[0072] Tributyl citrate 2.79%;

[0073] Propylene glycol 8.56%;

[0074] Replenish water to 100%.

[0075] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0076] Example 5

[0077] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0078] Sodium isooctanol sulfate 70.00%;

[0079] Linear deca-ol polyoxyethylene ether (XP-50) 13.00%;

[0080] 0.33% silicone defoamer;

[0081] Acetylene diol defoamer 2.00%;

[0082] Propylene glycol 8.56%;

[0083] Replenish water to 100%.

[0084] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0085] Example 6

[0086] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0087] Sodium isooctanol sulfate 70.00%;

[0088] Isomeric deca-ol polyoxyethylene ether (XL-50) 8.49%;

[0089] 0.33% silicone defoamer;

[0090] Tributyl citrate 2.79%;

[0091] Propylene glycol 8.56%;

[0092] Replenish water to 100%.

[0093] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0094] Example 7

[0095] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0096] Sodium isooctanol sulfate 75.00%;

[0097] Isomeric deca-ol polyoxyethylene ether (XL-40) 7.00%;

[0098] 0.74% silicone defoamer;

[0099] Tributyl citrate 4.26%;

[0100] Propylene glycol 5.00%;

[0101] Replenish water to 100%.

[0102] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0103] Example 8

[0104] This embodiment provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0105] Sodium isooctanol sulfate 60.00%;

[0106] Isomeric deca-ol polyoxyethylene ether (XL-40) 10.00%;

[0107] 0.27% silicone defoamer;

[0108] Tributyl citrate 3.73%;

[0109] Propylene glycol 11.00%;

[0110] Replenish water to 100%.

[0111] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0112] Comparative Example 1

[0113] This comparative example provides a permeation composition, the composition comprising, by total mass:

[0114] Sodium isooctanol sulfate 70.00%;

[0115] 0.33% silicone defoamer;

[0116] Tributyl citrate 2.79%;

[0117] Propylene glycol 8.56%;

[0118] Replenish water to 100%.

[0119] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0120] Comparative Example 2

[0121] This comparative example provides a permeation composition, the composition comprising, by total mass:

[0122] Sodium isooctanol sulfate 70.00%;

[0123] 2.00% silicone defoamer;

[0124] Tributyl citrate 5.00%;

[0125] Propylene glycol 8.56%;

[0126] Replenish water to 100%.

[0127] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0128] Comparative Example 3

[0129] This comparative example provides a low-foaming, ammonia-free permeation composition, the composition comprising, by total mass:

[0130] Sodium isooctanol sulfate 70.00%;

[0131] Isomeric deca-ol polyoxyethylene ether (XL-90) 8.49%;

[0132] 0.33% silicone defoamer;

[0133] Tributyl citrate 2.79%;

[0134] Propylene glycol 8.56%;

[0135] Replenish water to 100%.

[0136] The preparation method of the low-foaming, ammonia-free permeable composition is the same as that in Example 1.

[0137] Comparative Example 4

[0138] This comparative example provides a permeation composition with the same composition as in Example 1.

[0139] The preparation method of the low-foaming, ammonia-free permeation composition is as follows:

[0140] S1. Mix isooctyl alcohol, aminosulfonic acid and urea and heat to 95°C. The system is exothermic to 150-160°C and undergoes a phase inversion at 140°C, transitioning from a two-phase to a nearly homogeneous viscous substance. Then keep it at this temperature for 2 hours and evacuate for 1 hour to remove excess isopropanol. Add water and cool to 100°C. Add 50wt% sodium hydroxide alkaline solution dropwise and evacuate for 4-5 hours to remove ammonia. Then dilute with water to a 45-50wt% sodium isooctyl sulfate solution.

[0141] S2. Simply mix sodium isooctyl sulfate and the other components of the composition evenly.

[0142] Performance testing methods:

[0143] The compositions of the above examples and comparative examples were mixed with sodium hydroxide to form different working solutions (wherein the concentration of the composition was 5 g / L and the concentration of sodium hydroxide was 250 g / L); the following tests were then performed:

[0144] 1. Penetration: Place a 2.5cm*2.5cm double-sided knitted cotton fabric at the same height above the working liquid and record the time from contact to complete wetting (T1) and from contact to settling to the bottom (T2).

[0145] 2. Alkali resistance: After the working solution has been left for 24 hours, observe whether there are any floating objects or stratification on the surface.

[0146] 3. Foaming: The shaking method was used. A stoppered graduated cylinder was used to pour in 50 mL of working solution and shake it 30 times, up and down once. After the shaking was completed, the volume of foam above the liquid surface was observed (based on the liquid surface) and the time when the foam disappeared was recorded.

[0147] Performance test results:

[0148] Table 1

[0149] Serial Number Penetration T1 / T2 Alkali resistance Foam height Defoaming time Example 1 2″ / 10″ No precipitation 3mL 28 seconds Example 2 2″ / 11″ No precipitation 3mL 29 seconds Example 3 2″ / 12″ No precipitation 7mL 36 seconds Example 4 4″ / 16″ No precipitation 6mL 43 seconds Example 5 2″ / 13″ No precipitation 3mL 33 seconds Example 6 2″ / 10″ No precipitation 10mL 55 seconds Example 7 3″ / 12″ No precipitation 8mL 49 seconds Example 8 4″ / 17″ No precipitation 4mL 36 seconds Comparative Example 1 2″ / 11″ No precipitation 93mL >300 seconds Comparative Example 2 6″ / 18″ Small amount of precipitation 10mL 100 seconds Comparative Example 3 2″ / 15″ No precipitation 40mL 125 seconds Comparative Example 4 2″ / 11″ No precipitation 3mL 33 seconds

[0150] Conclusion: The composition of this application embodiment is a light yellow transparent liquid with a solid content of 45±5% and a pH of 8±1 for a 1% mass concentration aqueous solution. It showed no stratification or precipitation after being stored at 60℃ and 5℃ for 30 days, demonstrating excellent high and low temperature stability.

[0151] As shown in Table 1, the penetrating composition formulated with sodium isooctanol sulfate obtained by the specified preparation method in this application has good penetrability, alkali resistance, and defoaming and foam-suppressing properties. Its performance is comparable to or better than that of the penetrating composition formulated with sodium isooctanol sulfate prepared using the traditional aminosulfonic acid method (Comparative Example 4). However, the composition of this application does not produce an ammonia odor; the composition in Comparative Example 4 produces a pungent ammonia odor during use, which is detrimental to human health and the workshop environment. Comparing the results of Examples 1-8 and Comparative Examples 1-3, it is shown that: when the amount of defoamer is increased without using surfactants, although the foam-suppressing ability is enhanced, the defoaming ability of the composition decreases, and the penetrability and alkali resistance also significantly deteriorate (Comparative Example 2); the use of low-cloud-point surfactants in the composition formulation can effectively inhibit foam generation during application and quickly defoam, avoiding adverse effects of foam on the mercerizing process. However, when using high-cloud-point surfactants, not only is the penetration time prolonged, but the foam suppression and defoaming abilities are also relatively poor (Comparative Example 3).

[0152] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0153] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-foaming, ammonia-free permeating composition, characterized in that, The composition, by total mass, includes: 50-80% sodium isooctanol sulfate, 5-15% surfactant, 2-6% defoamer, and solvent to make up to 100%; The sodium isooctanol sulfate is obtained by reacting isooctanol with SO3 gas; The surfactant includes at least one of organosilicon surfactants and polyoxyethylene ether surfactants; the polyoxyethylene ether surfactant includes isomeric decayl alcohol polyoxyethylene ether or linear decayl alcohol polyoxyethylene ether, and the HLB value of the polyoxyethylene ether surfactant is 9-13; the organosilicon surfactant is a ternary copolymer organosilicon oil. The defoamer is a silicone defoamer and tributyl citrate, or the defoamer is a silicone defoamer and acetylenol defoamer.

2. The permeation composition according to claim 1, characterized in that, The cloud point of the surfactant is ≤60℃.

3. The permeation composition according to claim 1, characterized in that, The mass ratio of silicone defoamer to tributyl citrate is 1:4-10.

4. The permeation composition according to claim 1, characterized in that, The mass ratio of organosilicon defoamers to acetylsadiol defoamers is 1:4-10.

5. The permeation composition according to claim 1, characterized in that, The method for preparing sodium isooctanol sulfate includes the following steps: isooctanol and SO3 gas are introduced into a falling film reactor for reaction; The isooctyl alcohol flow rate in the falling film reactor is 10-18 kg·h -1 The volume fraction of SO3 in the gas is 0.5-10%; the temperature inside the falling film reactor is 10-30℃.

6. A method for preparing the permeation composition according to any one of claims 1-5, characterized in that, Specifically, the solution is to mix sodium isooctanol sulfate, surfactant, defoamer, and solvent evenly.

7. The use of the penetrating composition according to any one of claims 1-5 in the mercerizing process of cotton fabrics.