Breathable knitted fabric and preparation process thereof

Abstract

The present invention belongs to the technical field of fabrics, and discloses a breathable knitted fabric and a preparation process thereof; the present invention reacts epoxypropyl polyethylene glycol monomethyl ether with N-tert-butyloxycarbonyl-1,2-ethylenediamine and 2-bromoethyl acrylate, removes the Boc protecting group, and finally reacts with allyl glycidyl ether modified silicone oil to obtain an acrylate-based polyether modified silicone oil finishing agent. Hydrogen peroxide and ascorbic acid are used as the initiation polymerization system, and the alkenyl group of the acrylate-based polyether modified silicone oil finishing agent is grafted and polymerized with the wool knitted fabric, giving the fabric a good soft feel and wrinkle resistance. And after grafting and finishing, the fabric still maintains a high air permeability, and will not affect the air permeability of the fabric. The polyether modified silicone oil finishing agent is firmly chemically bonded to the surface of the fabric, and is difficult to wash and fall off. After washing, it still has a good soft feel and wrinkle resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of fabrics, and in particular relates to a breathable knitted fabric and a preparation process thereof. Background Art

[0002] Wool fabrics have good warmth retention, air permeability and elasticity, and are widely used in high-end clothing, home textiles and other products. Using finishing agents to finish wool fabrics is an effective way to improve their feel, softness, wrinkle resistance, hydrophilicity and other properties. Common finishing agents include polyether finishing agents, silicone finishing agents, etc. Finishing methods include padding finishing, chemical grafting finishing, etc.

[0003] The invention patent with publication number CN111733601B discloses that sodium lignin sulfonate, amino silicone oil, modified spider silk reaction solution, etc. are used as raw materials to obtain an "oil-in-water" emulsion finishing liquid, which has the advantages of high initial shaping retention rate after finishing wool fabrics. However, the patent does not improve the hydrophilicity and wrinkle resistance of wool fabrics.

[0004] The invention patent with publication number CN108893986B discloses that the end group of the synthesized thermosensitive PNIPAm polymer is connected with a vinyl group, and then the end group is grafted onto the surface of wool fabric through the reaction mechanism of thiol-ene click chemistry by utilizing the catalytic properties of HRP enzyme, so that the wool fabric not only exhibits different hydrophilicity and hydrophobicity at different temperatures, but the patent does not improve the hand feel and wrinkle resistance of wool fabric. Summary of the invention

[0005] The technical problem solved by the present invention is that the wool knitted fabric is grafted and finished by using silicone oil finishing agent, thereby solving the problem that the wool fabric has poor hand feel and poor softness, and at the same time enables the wool fabric to maintain good air permeability.

[0006] The present invention provides a preparation process of a breathable knitted fabric, comprising the following steps:

[0007] Step A, adding isopropanol solvent, allyl glycidyl ether modified silicone oil, and acrylate amino polyether into a reaction container, heating to 60-80° C., stirring and reacting for 6-12 hours, cooling after the reaction, concentrating under reduced pressure, washing with methanol, and drying to obtain an acrylate polyether modified silicone oil finishing agent.

[0008] Step B: Add water, acrylate polyether modified silicone oil finishing agent, H 2 O 2 The aqueous solution is stirred to form a grafting solution, formic acid is added, the pH is adjusted to 2-3, nitrogen is introduced, wool knitted fabric is added, and pre-reaction is stirred for 2-3 hours, and then ascorbic acid is added, and reaction is stirred for 4-7 hours. The wool knitted fabric is taken out, and it is washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0009] Preferably, in step A, the ratio of allyl glycidyl ether modified silicone oil to acrylate amino polyether is 1 g:(0.1-0.3) g.

[0010] Preferably, the mass concentration of the acrylate-based polyether modified silicone oil finishing agent in the grafting solution in step B is (20-100) g / L.

[0011] Preferably, in step B, H 2 O 2 The mass concentration of is (10-18) g / L, and the mass concentration of ascorbic acid is (1.6-2.2) g / L.

[0012] Preferably, in step B, the mass concentration of the wool knitted fabric in the grafting solution is (15-25) g / L.

[0013] Preferably, the preparation method of acrylate amino polyether is:

[0014] Step (1), reacting epichlorohydrin with polyethylene glycol monomethyl ether to obtain glycidyl polyethylene glycol monomethyl ether; then adding glycidyl polyethylene glycol monomethyl ether into a reaction container, adding tetrahydrofuran and N-tert-butyloxycarbonyl-1,2-ethylenediamine, wherein the ratio of glycidyl polyethylene glycol monomethyl ether to N-tert-butyloxycarbonyl-1,2-ethylenediamine is 1 mol:(1.4-1.8) mol; heating to 40-50° C., reacting for 3-4 hours, concentrating under reduced pressure, washing with petroleum ether, and drying to obtain a BOC amino polyether intermediate.

[0015] Step (2), adding ethanol, a BOC amino polyether intermediate in a ratio of 1 mol:(1.2-1.4) mol:(1.2-1.4) mol, 2-bromoethyl acrylate, and potassium carbonate to a reaction container, heating to 40-55° C., reacting for 8-12 hours, concentrating under reduced pressure, washing with petroleum ether, adding dichloromethane to the product, stirring and dissolving, filtering to remove impurities, concentrating the filtrate under reduced pressure, adding the product to an ethyl acetate solution of HCl having a molar concentration of 3-4 mol / L, stirring and reacting for 3-5 hours, adding sodium bicarbonate to neutralize, concentrating under reduced pressure, adding dichloromethane, stirring and dissolving, filtering to remove impurities, concentrating the filtrate under reduced pressure, washing with petroleum ether, and drying to obtain an acrylate amino polyether.

[0016] Preferably, the preparation method of allyl glycidyl ether modified silicone oil is: nitrogen is introduced into a reaction container, ethyl acetate, hydrogen-containing silicone oil, allyl glycidyl ether, and Custer catalyst are added, and after the reaction, the low-boiling substances are removed by concentrating under reduced pressure to obtain allyl glycidyl ether modified silicone oil.

[0017] The present invention also provides a breathable knitted fabric prepared by the preparation method.

[0018] The technical effect of the invention is as follows: glycidyl polyethylene glycol monomethyl ether is subjected to a ring-opening reaction with N-tert-butyloxycarbonyl-1,2-ethylenediamine, and then the imino group is reacted with 2-bromoethyl acrylate, and the Boc protecting group is removed through an ethyl acetate solution of HCl to obtain an acrylate amino polyether, and finally the amino group thereof is reacted with the epoxy group of allyl glycidyl ether modified silicone oil to obtain an acrylate polyether modified silicone oil finishing agent.

[0019] The present invention uses hydrogen peroxide and ascorbic acid as the initiation polymerization system, and carries out graft polymerization reaction between the olefin group of the acrylate-based polyether-modified silicone oil finishing agent and the wool knitted fabric, so as to graft the polyether-modified silicone oil finishing agent onto the surface of the wool fabric. The finishing agent contains a hydrophilic polyether segment and a large number of hydroxyl and imino hydrophilic groups, which significantly improves the surface hydrophilicity of the wool fabric, and at the same time, the flexible silicone oil molecular chain also gives the fabric a good soft feel and anti-wrinkle performance. Moreover, after the graft finishing, the fabric still maintains a high air permeability, and will not affect the air permeability of the fabric.

[0020] The polyether modified silicone oil finishing agent of the invention is firmly chemically bonded to the surface of the fabric and is difficult to fall off by washing. After washing, the fabric still has good soft feel and anti-wrinkle performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the reaction formula for preparing acrylate amino polyether.

[0022] Figure 2 This is a reaction formula for preparing an acrylate-based polyether-modified silicone oil finishing agent. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Nitrogen was introduced into the reaction vessel, and 80 mL of ethyl acetate solvent, 10 g of hydrogenated silicone oil (hydrogen content 1.56%), and allyl glycidyl ether were added. The ratio of Si-H bond in hydrogenated silicone oil to allyl glycidyl ether was 1 mol:1.05 mmol. A Custer catalyst was added, and the mass fraction of Pt in the Custer catalyst was 0.002% of allyl glycidyl ether. The mixture was heated to 60°C, reacted for 4 hours, and concentrated under reduced pressure to remove low-boiling substances to obtain allyl glycidyl ether modified silicone oil. Its structural formula is:

[0025]

[0026] Add 200mL toluene, 20mmol polyethylene glycol monomethyl ether 500, add 30mmol sodium hydride, stir and react at 30℃ for 2h, then add 80mmol epichlorohydrin, heat to 40℃, stir and react for 6h, add ether to precipitate, filter and dissolve the product in dichloromethane, add water for extraction and separation, add ether to the dichloromethane extract to precipitate, filter and dry the precipitate to obtain epoxypropyl polyethylene glycol monomethyl ether. Its structural formula is:

[0027]

[0028] Example 1

[0029] Step (1), add 15 mmol of glycidyl polyethylene glycol monomethyl ether, 200 mL of tetrahydrofuran, and 27 mmol of N-tert-butyloxycarbonyl-1,2-ethylenediamine into a reaction vessel, heat to 40° C., react for 3 h, concentrate under reduced pressure, wash with petroleum ether, and dry to obtain a BOC amino polyether intermediate.

[0030] Step (2), add 200mL of ethanol, 15mmol of BOC amino polyether intermediate, 18mmol of 2-bromoethyl acrylate, and 18mmol of potassium carbonate into a reaction vessel, heat to 40°C, react for 12h, concentrate under reduced pressure, wash with petroleum ether, add dichloromethane to the product, stir to dissolve, filter to remove impurities, and concentrate the filtrate under reduced pressure. Add the product to 180mL of 4mol / L HCl in ethyl acetate, stir to react for 5h, add sodium bicarbonate to neutralize, and concentrate under reduced pressure. Add dichloromethane, stir to dissolve, filter to remove impurities, and concentrate the filtrate under reduced pressure. Wash with petroleum ether and dry to obtain an acrylate amino polyether.

[0031] Example 2

[0032] Step (1), add 15 mmol of glycidyl polyethylene glycol monomethyl ether, 150 mL of tetrahydrofuran, and 21 mmol of N-tert-butyloxycarbonyl-1,2-ethylenediamine into a reaction vessel, heat to 50° C., react for 4 h, concentrate under reduced pressure, wash with petroleum ether, and dry to obtain a BOC amino polyether intermediate.

[0033] Step (2), add 250mL of ethanol, 15mmol of BOC amino polyether intermediate, 21mmol of 2-bromoethyl acrylate, and 21mmol of potassium carbonate to a reaction vessel, heat to 55°C, react for 8h, concentrate under reduced pressure, wash with petroleum ether, add dichloromethane to the product, stir to dissolve, filter to remove impurities, and concentrate the filtrate under reduced pressure. Add the product to 180mL of 4mol / L HCl in ethyl acetate, stir to react for 3h, add sodium bicarbonate to neutralize, and concentrate under reduced pressure. Add dichloromethane, stir to dissolve, filter to remove impurities, and concentrate the filtrate under reduced pressure. Wash with petroleum ether and dry to obtain an acrylate amino polyether.

[0034] Example 3

[0035] Step A: add 60 mL of isopropanol solvent, 5 g of allyl glycidyl ether modified silicone oil, and 0.5 g of acrylate amino polyether (prepared according to the process of Example 1) into a reaction container, heat to 80° C., stir and react for 6 h, cool after the reaction, concentrate under reduced pressure, wash with methanol, and dry to obtain an acrylate polyether modified silicone oil finishing agent.

[0036] Step B: Add 1L of water, 20g of acrylate-based polyether-modified silicone oil finishing agent, containing 10g of H 2 O 2 An aqueous solution was prepared by stirring to prepare a grafting solution, formic acid was added, the pH was adjusted to 2, nitrogen was introduced, 20 g of wool knitted fabric was added, and the pre-reaction was stirred for 3 h. Then 1.6 g of ascorbic acid was added, and the reaction was stirred for 7 h. The wool knitted fabric was taken out, and it was washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0037] Example 4

[0038] Step A: add 80 mL of isopropanol solvent, 5 g of allyl glycidyl ether modified silicone oil, and 1 g of acrylate amino polyether (prepared according to the process of Example 1) into a reaction container, heat to 60° C., stir and react for 12 h, cool after the reaction, concentrate under reduced pressure, wash with methanol, and dry to obtain an acrylate polyether modified silicone oil finishing agent.

[0039] Step B: Add 1L of water, 20g of acrylate-based polyether-modified silicone oil finishing agent, containing 10g of H 2 O 2 An aqueous solution was prepared by stirring to prepare a grafting solution, formic acid was added, the pH was adjusted to 2, nitrogen was introduced, 15 g of wool knitted fabric was added, and the pre-reaction was stirred for 3 h. Then 1.6 g of ascorbic acid was added, and the reaction was stirred for 7 h. The wool knitted fabric was taken out, and it was washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0040] Example 5

[0041] Step A: add 80 mL of isopropanol solvent, 5 g of allyl glycidyl ether modified silicone oil, and 1.5 g of acrylate amino polyether (prepared according to the process of Example 1) into a reaction container, heat to 80° C., stir and react for 6 hours, cool after the reaction, concentrate under reduced pressure, wash with methanol, and dry to obtain an acrylate polyether modified silicone oil finishing agent.

[0042] Step B: Add 1L of water, 20g of acrylate-based polyether-modified silicone oil finishing agent, containing 10g of H 2 O 2 An aqueous solution was prepared by stirring to prepare a grafting solution, formic acid was added, the pH was adjusted to 3, nitrogen was introduced, 25 g of wool knitted fabric was added, and the pre-reaction was stirred for 2 h. Then 1.6 g of ascorbic acid was added, and the reaction was stirred for 4 h. The wool knitted fabric was taken out, and it was washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0043] Comparative Example 1

[0044] To the reaction vessel, 1 L of water, 20 g of acrylate amino polyether (prepared according to the process of Example 1), containing 10 g of H 2 O 2 An aqueous solution was prepared by stirring to prepare a grafting solution, formic acid was added, the pH was adjusted to 2, nitrogen was introduced, 20 g of wool knitted fabric was added, and the pre-reaction was stirred for 3 h. Then 1.6 g of ascorbic acid was added, and the reaction was stirred for 7 h. The wool knitted fabric was taken out, and it was washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0045] Comparative Example 2

[0046] Step A: add 60 mL of isopropanol solvent, 5 g of allyl glycidyl ether modified silicone oil, and 0.5 g of amino polyether D230 into a reaction container, heat to 80° C., stir and react for 6 h, cool after the reaction, concentrate under reduced pressure, wash with methanol, and dry to obtain a polyether modified silicone oil finishing agent.

[0047] Step B: add 1L of water and 20g of polyether modified silicone oil finishing agent into the reaction container, add glacial acetic acid to adjust the pH to 5 to make a finishing solution, and then add 20g of wool knitted fabric for impregnation treatment. Pre-bake the wool knitted fabric at 60°C for 1h and bake at 110°C for 5min to obtain a breathable knitted fabric.

[0048] Unfinished wool knitted fabric was used as blank control.

[0049] The air permeability is tested according to GB / T 5453-1997 method.

[0050] The drop spreading time and hydrophilicity were tested according to AATCC 79-2000 method.

[0051] The test results are shown in Table 1.

[0052] Table 1 Air permeability and water drop diffusion time test of wool knitted fabrics

[0053] <![CDATA[Air permeability (L / (m 2 ·s))]]> Droplet diffusion time (s) Example 1 326.4 5.8 Example 2 331.0 5.4 Example 3 325.3 4.9 Comparative Example 1 329.8 8.5 Comparative Example 2 271.7 2.6 Blank control 342.4 61.7

[0054] Hand feel test of knitted fabrics: 5 textile experts conducted the test and gave ratings, with 10 being the best hand feel and 1 being the worst, and the average value was taken.

[0055] The wrinkle recovery angle of wool knitted fabrics was tested according to the method of GB / T 3819-1997.

[0056] According to the GB / T 8629-2017 method, wash the fabric 50 times and then test the hand feel and wrinkle recovery angle.

[0057] The test results are shown in Table 2.

[0058] Table 2 Hand feel and wrinkle recovery angle test of wool knitted fabrics

[0059]

[0060]

[0061] As shown in Table 1 and Table 2, compared with the blank control of ordinary unfinished wool knitted fabric, in Examples 3-5, the wool knitted fabric was chemically grafted and modified by using an acrylate-based polyether-modified silicone oil finishing agent containing alkenyl, and the polyether-modified silicone oil finishing agent was grafted on the surface of the wool fabric, and the fabric still maintained a high air permeability, with a small decline, and the drip diffusion time was significantly lower, and the surface hydrophilicity was significantly improved. At the same time, it has good softness and feel, as well as a high wrinkle recovery angle, excellent wrinkle resistance, and the polyether-modified silicone oil finishing agent is firmly chemically bonded to the surface of the fabric, and is difficult to wash off. After 50 washes, the hand feel rating and wrinkle recovery angle decreased very little, and it still has good soft feel and wrinkle resistance.

[0062] The acrylate amino polyether of Comparative Example 1 does not contain a flexible silicone oil structure, and chemical grafting modification of wool knitted fabrics cannot improve the feel and wrinkle resistance of the fabrics, and the feel rating and wrinkle recovery angle are low.

[0063] Comparative Example 2 The epoxy group of allyl glycidyl ether modified silicone oil reacts with the amino group of amino polyether D230 to obtain a polyether modified silicone oil finishing agent, which does not contain alkenyl groups and cannot be grafted to wool knitted fabrics. It can only be finished by immersion. The drip diffusion time of the finished fabric is significantly lower, the hydrophilicity is increased, the hand feel rating and the wrinkle recovery angle are also larger, the soft hand feel is improved, and the wrinkle resistance is increased. However, after 50 washes, the hand feel rating and the wrinkle recovery angle decreased significantly, mainly because the polyether modified silicone oil finishing agent cannot be grafted to the wool knitted fabric and is not firmly chemically bonded to the surface of the fabric. After multiple washes, the finishing agent solution is washed away, and the hand feel rating and the wrinkle recovery angle are greatly reduced.

[0064] Example 6

[0065] Add 1L of water, 45g of acrylate-based polyether-modified silicone oil finishing agent (prepared according to the process of Example 3), containing 13g of H 2 O 2 An aqueous solution was prepared by stirring to prepare a grafting solution, formic acid was added, the pH was adjusted to 2, nitrogen was introduced, 20 g of wool knitted fabric was added, and the pre-reaction was stirred for 3 h. Then 1.8 g of ascorbic acid was added, and the reaction was stirred for 7 h. The wool knitted fabric was taken out, and it was washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0066] Example 7

[0067] Add 1L of water, 70g of acrylate-based polyether-modified silicone oil finishing agent (prepared according to the process of Example 3), 15g of H 2 O 2 An aqueous solution was prepared by stirring to prepare a grafting solution, formic acid was added, the pH was adjusted to 2, nitrogen was introduced, 20 g of wool knitted fabric was added, and the pre-reaction was stirred for 3 h, and then 2 g of ascorbic acid was added, and the reaction was stirred for 7 h. The wool knitted fabric was taken out, and it was washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0068] Example 8

[0069] Add 1L of water, 100g of acrylate-based polyether-modified silicone oil finishing agent (prepared according to the process of Example 3), containing 18g of H 2 O 2 An aqueous solution was prepared by stirring to prepare a grafting solution, formic acid was added, the pH was adjusted to 2, nitrogen was introduced, 20 g of wool knitted fabric was added, and the pre-reaction was stirred for 3 h. Then 2.2 g of ascorbic acid was added, and the reaction was stirred for 7 h. The wool knitted fabric was taken out, and it was washed with ethanol and hot water in turn, and dried to obtain a breathable knitted fabric.

[0070] The performance tests of Examples 6-8 were carried out, and the results are shown in Table 3.

[0071] Table 3 Performance test of breathable knitted fabrics

[0072]

[0073]

[0074] In Examples 6-8, different amounts of acrylate-based polyether modified silicone oil finishing agent were used to graft finish the wool knitted fabrics, and the fabrics still maintained good air permeability, and had good hydrophilicity, soft hand feel and anti-wrinkle properties.

[0075] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A process for preparing a breathable knitted fabric, characterized in that: The steps include: Step A, adding isopropanol solvent, allyl glycidyl ether modified silicone oil, and acrylate amino polyether into a reaction container, heating to 60-80° C., stirring for reaction for 6-12 hours, cooling after the reaction, concentrating under reduced pressure, washing, and drying to obtain an acrylate polyether modified silicone oil finishing agent; Step B, adding water, acrylate-based polyether modified silicone oil finishing agent, and H2O2 aqueous solution into a reaction container, stirring to prepare a grafting solution, adding formic acid, adjusting the pH to 2-3, introducing nitrogen, adding wool knitted fabric, stirring for pre-reaction for 2-3h, then adding ascorbic acid, stirring for reaction for 4-7h, taking out the wool knitted fabric, washing, and drying to obtain a breathable knitted fabric; The preparation method of the acrylate amino polyether is: Step (1), reacting epichlorohydrin with polyethylene glycol monomethyl ether to obtain glycidyl polyethylene glycol monomethyl ether; then adding glycidyl polyethylene glycol monomethyl ether to a reaction vessel, adding tetrahydrofuran and N-tert-butyloxycarbonyl-1,2-ethylenediamine, heating to 40-50° C., reacting for 3-4 hours, concentrating under reduced pressure, washing, and drying to obtain a BOC amino polyether intermediate; Step (2), add ethanol, BOC amino polyether intermediate, 2-bromoethyl acrylate, potassium carbonate to a reaction vessel, heat to 40-55°C, react for 8-12 hours, concentrate under reduced pressure, wash, add dichloromethane to the product, stir to dissolve, filter, concentrate the filtrate under reduced pressure, add the product to ethyl acetate solution of HCl, stir to react for 3-5 hours, add sodium bicarbonate to neutralize, concentrate under reduced pressure, add dichloromethane, stir to dissolve, filter, concentrate the filtrate under reduced pressure, wash, and dry to obtain acrylate amino polyether.

2. The preparation process of the breathable knitted fabric according to claim 1, characterized in that: In the step A, the ratio of allyl glycidyl ether modified silicone oil to acrylate amino polyether is 1g:(0.1-0.3)g.

3. The preparation process of the breathable knitted fabric according to claim 1, characterized in that: The mass concentration of the acrylate-based polyether modified silicone oil finishing agent in the grafting solution in step B is (20-100) g / L.

4. The preparation process of the breathable knitted fabric according to claim 1, characterized in that: In the step B, the mass concentration of H2O2 in the grafting solution is (10-18) g / L, and the mass concentration of ascorbic acid is (1.6-2.2) g / L.

5. The preparation process of the breathable knitted fabric according to claim 1, characterized in that: In the step B, the mass concentration of the wool knitted fabric in the grafting solution is (15-25) g / L.

6. The preparation process of the breathable knitted fabric according to claim 1, characterized in that: In the step (1), the ratio of glycidyl polyethylene glycol monomethyl ether to N-tert-butyloxycarbonyl-1,2-ethylenediamine is 1 mol:(1.4-1.8) mol.

7. The preparation process of the breathable knitted fabric according to claim 1, characterized in that: In the step (2), the molar ratio of the boc amino polyether intermediate, 2-bromoethyl acrylate, and potassium carbonate is 1 mol:(1.2-1.4) mol:(1.2-1.4) mol; and the molar concentration of the ethyl acetate solution of HCl in the step (2) is 3-4 mol / L.

8. The preparation process of the breathable knitted fabric according to claim 1, characterized in that: The preparation method of the allyl glycidyl ether modified silicone oil comprises the following steps: introducing nitrogen into a reaction container, adding ethyl acetate, hydrogen-containing silicone oil, allyl glycidyl ether and a Custer catalyst, and concentrating under reduced pressure to remove low-boiling substances after the reaction to obtain the allyl glycidyl ether modified silicone oil.

9. A breathable knitted fabric prepared by the preparation process of breathable knitted fabric according to any one of claims 1 to 8.

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