Organosilicon-modified-perfluoropolyether-based UV Anti-fingerprint agent and preparation method therefor

Abstract

The present invention provides an organosilicon-modified-perfluoropolyether-based UV anti-fingerprint agent and a preparation method therefor. The method comprises the following steps: adding an organosilicon-modified perfluoropolyether to a fluorocarbon solvent, adding an alcohol compound containing a propenyl-terminated group and a catalyst thereto, and reacting same, so as to obtain a hydroxyl-containing organosilicon-modified perfluoropolyether solution; adding an acid-binding agent to the hydroxyl-containing organosilicon-modified perfluoropolyether solution, and slowly adding, in a dropwise manner, an acryloyloxy chloride, and reacting same, so as to obtain a crude product; and adding an organic alcohol compound to the crude product for a treatment, subjecting same to liquid separation, leaving same to stand, taking out a subnatant, and subjecting same to rotary evaporation, so as to obtain an organosilicon-modified-perfluoropolyether-based UV anti-fingerprint agent. By means of chemical synthesis, the method of the present invention solves the problem of compatibility between a perfluoropolyether-based anti-fingerprint agent and a UV coating, whilst reducing the amount of fluorocarbon solvent. During the process of curing, the present invention further achieves the rapid migration of part of the perfluoropolyether-based anti-fingerprint agent to the surface of the UV coating for curing and cross-linking in situ.

Description

A silicone-modified perfluoropolyether UV anti-fingerprint agent and its preparation method

[0001] Cross-reference information

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 4, 2023, with application number 202311649472.5 and invention name “A silicone-modified perfluoropolyether UV anti-fingerprint agent and its preparation method”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The invention relates to an organosilicon-modified perfluoropolyether UV anti-fingerprint agent and a preparation method thereof, and belongs to the field of coatings. Background Art

[0004] With the widespread use of perfluoropolyether (PFPE) anti-fingerprint oils in mobile phone screens, car screens, tablet screens, high-end lenses, and eyewear, PFPE-based modified materials have become standard products in the electronics and coatings industries. Currently available UV anti-fingerprint agents are a type of PFPE modifier containing acrylate groups. They are primarily used to improve the hydrophobicity and oleophobicity, graffiti resistance, and anti-fingerprint properties of photocurable coatings. They are widely used in electronic packaging, ink printing, plastic coatings, metal surface coatings, and flexible electronic skin. Examples include Japan's Shin-Etsu KY-1203 and Italy's Solvay Fluorolink AD1700. KY-1203 contains silane segments in its molecular chain, which increases its flexibility and improves its compatibility with UV resins. During the curing process, the molecular chains easily migrate to the UV resin surface for co-curing, resulting in superior abrasion resistance and graffiti resistance compared to current similar products, but the price is very high.

[0005] EP 4063406A1 discloses a method for preparing perfluoropolyether-based silane acrylate. However, the synthesis process of this preparation method requires five steps and a long reaction route. In particular, during the reaction process, acid and water need to be added, which easily causes the siloxane to self-crosslink, resulting in a low yield. The technical solution disclosed in CN 112574390A uses K-type perfluoropolyether alcohol and terminal hydroxyl silicone oil as raw materials and isophorone diisocyanate as a bridging agent. This method results in an unclear product structure and affects the stability of product performance. The technical solution disclosed in CN 109679483A directly uses Y-type perfluoropolyether acrylate and other acrylate monomers for free radical polymerization as a perfluoropolyether modification auxiliary agent. However, this material does not have an acrylate group and cannot be photocured with UV coatings.

[0006] Summary of the Invention

[0007] To solve the above technical problems, the purpose of the present invention is to provide a silicone-modified perfluoropolyether UV anti-graffiti agent that solves the compatibility problem with UV coatings while reducing or eliminating the use of fluorocarbon solvents, and does not affect the friction resistance and anti-graffiti properties of the final coating.

[0008] To achieve the above object, the present invention provides a method for preparing a silicone-modified perfluoropolyether UV anti-fingerprint agent, which comprises the following steps:

[0009] (a) adding an organosilicon-modified perfluoropolyether to a fluorocarbon solvent, and then adding an alcohol compound containing a terminal propenyl group and a catalyst to react to obtain a hydroxyl-containing organosilicon-modified perfluoropolyether solution; wherein the molar ratio of the alcohol compound containing a terminal propenyl group to the organosilicon-modified perfluoropolyether is 1.8-3:1;

[0010] (b) adding an acid binding agent to the hydroxyl-containing organosilicon-modified perfluoropolyether solution obtained in step (a), and then slowly adding acryloyloxy chloride dropwise to react to obtain a crude product; wherein the molar ratio of the acid binding agent to the organosilicon-modified perfluoropolyether is 6-10:1, and the molar ratio of the acryloyloxy chloride to the organosilicon-modified perfluoropolyether is 6-12:1;

[0011] (c) adding an organic alcohol compound to the crude product of step (b) for treatment, separating and standing the liquid, taking out the lower layer, and performing rotary evaporation to obtain the organosilicon-modified perfluoropolyether UV anti-fingerprint agent.

[0012] In the above preparation method, preferably, the structure of the organosilicon-modified perfluoropolyether is R f -bR;

[0013] Among them, R f R is polysiloxane.

[0014] In the above preparation method, preferably, the perfluoropolyether comprises one or a combination of two or more of K-type perfluoropolyether, D-type perfluoropolyether, Y-type perfluoropolyether and Z-type perfluoropolyether. More preferably, the perfluoropolyether comprises one or a combination of two or more of double-ended Z-type perfluoropolyether allyl ether, double-ended K-type perfluoropolyether allyl ether, double-ended Z-type perfluoropolyether acrylate, double-ended Z-type perfluoropolyether methacrylate, double-ended K-type perfluoropolyether acrylate, double-ended K-type perfluoropolyether methacrylate, double-ended D-type perfluoropolyether acrylate and double-ended D-type perfluoropolyether methacrylate.

[0015] In the above preparation method, preferably, the polysiloxane comprises one or a combination of hydrogen-containing silicone oil and mercapto-containing silicone oil;

[0016] The hydrogen-containing silicone oil includes one or a combination of two or more of single-ended silicon hydrogen silicone oil, double-ended silicon hydrogen silicone oil, and side silicon hydrogen silicone oil;

[0017] The mercapto-containing silicone oil includes one or a combination of terminal mercapto silicone oil and pendant mercapto silicone oil.

[0018] In the above preparation method, preferably, the organosilicon-modified perfluoropolyether is:

[0019] The molecular weight is 5100-30000.

[0020] In the above preparation method, preferably, the fluorocarbon solvent includes one or a combination of two or more of nonafluorobutyl ethyl ether, nonafluorobutyl methyl ether, trifluorotoluene, 1,3-bis(trifluoromethyl)benzene, perfluorocyclic ether, and perfluorohexane.

[0021] In the above preparation method, preferably, the catalyst comprises one or a combination of two or more of Custer's catalyst, Speier's catalyst, benzoyl peroxide, di-tert-butyl peroxide, and Pt / C.

[0022] In the above preparation method, preferably, the amount of the catalyst used is 0.01%-10% of the total mass of the reactants in step (a).

[0023] In the above preparation method, preferably, the alcohol compound containing a terminal propenyl group includes one or a combination of two or more of hydroxyethyl acrylate, hydroxyethyl methacrylate, pentaerythritol triacrylate, pentaerythritol allyl ether, pentaerythritol dipropyl ether, 2,2-bis(hydroxymethyl)-1,3-propylene glycol allyl ether, and trimethylolpropane allyl ether.

[0024] In the above preparation method, preferably, the reaction temperature in step (a) is 40-200° C., and the reaction time is 0.5-72 h.

[0025] In the above preparation method, preferably, the acid binding agent includes one or a combination of two or more of triethylamine, tripropylamine, tributylamine, pyridine, N,N-diisopropylethylamine, 4-methylimidazole, potassium carbonate, sodium carbonate, potassium hydroxide, and sodium hydroxide.

[0026] In the above preparation method, preferably, the acryloyl chloride is methacryloyl chloride or acryloyl chloride.

[0027] In the above preparation method, preferably, the reaction temperature in step (b) is 0-90° C., and the reaction time is 0.3-24 h.

[0028] In the above preparation method, preferably, the organic alcohol compound includes one or a combination of two or more of methanol, ethanol, isopropanol, n-butanol, isobutanol, and isopentanol.

[0029] The present invention also provides an organosilicon-modified perfluoropolyether UV anti-fingerprint agent, which is prepared by the above-mentioned preparation method.

[0030] The present invention provides a method for preparing a silicone-modified perfluoropolyether UV anti-fingerprint agent. The product obtained through chemical synthesis does not require fluorocarbon solvents for dissolution, whereas similar products currently on the market all require fluorocarbon solvents for dissolution. This method thus solves the compatibility issue between perfluoropolyether-based anti-fingerprint agents and UV coatings while reducing or eliminating the use of fluorocarbon solvents. Furthermore, during the curing process, the perfluoropolyether-based anti-fingerprint agent partially and rapidly migrates to the UV coating surface, achieving in-situ curing and crosslinking. Furthermore, the preparation method is simple and highly operable, the perfluoropolyether-based anti-fingerprint agent has a clear structure, and the product yield is high, making it of immeasurable economic value in UV coatings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the infrared spectrum of bifunctional silyl perfluoropolyether-b-polysiloxane.

[0032] Figure 2 is the infrared spectrum of the hydroxy-terminated silicone-modified perfluoropolyether.

[0033] FIG3 is an infrared spectrum of the methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent A.

[0034] FIG4 is an infrared spectrum of the methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent F. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, objectives and beneficial effects of the present invention, the technical solution of the present invention is now described in detail below, but it should not be understood as limiting the scope of implementation of the present invention.

[0036] Raw materials of embodiment:

[0037] Bis-terminal silicon-hydrogen perfluoropolyether-b-polysiloxane (Models FES-1, FES-2, and FES-3): Industrial grade, PetroChina (Shanghai) New Materials Research Institute Co., Ltd. The structural formula of FES is as follows, and its infrared spectrum is shown in Figure 1:

[0038] m-Bis(trifluorotoluene), methacryloyl chloride, acryloyl chloride, methacryloxypropyldimethylmethoxysilane, 2,2-bis(hydroxymethyl)-1,3-propylene glycol allyl ether, trimethylolpropane allyl ether, triethylamine, Custer's catalyst, tris(pentafluorophenyl)borane, methyl isoamyl ketone: reagent grade, Shanghai Aladdin Biochemical Technology Co., Ltd.

[0039] Analysis and evaluation method: Refer to the international test standard GB / T 24368-2009 to test the water contact angle.

[0040] Abrasion resistance test: A polycarbonate sheet coated with UV coating and cured was fixed on an abrasion resistance tester (ZJ-339-GSR, Shenzhen Zhijia Instrument Equipment Co., Ltd.) with a contact head area of ​​2×2 cm 2 , tie 0000# steel wool on the contact head friction probe; apply 1000g test load above the probe, test speed 40 times / min, stroke 3-4cm, and reciprocating friction 3000 times.

[0041] Example 1

[0042] This embodiment provides a methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent, which is prepared by the following steps:

[0043] 100 g of bifunctional silicone-hydrogen perfluoropolyether-b-polysiloxane (FES-1, molecular weight of about 6800, HNMR test, PFPE segment is Z-type PFPE, molecular weight of about 1700, FNMR test), 20 mL of m-ditrifluorotoluene, 9 g of 2,2-bis(hydroxymethyl)-1,3-propylene glycol allyl ether and 20 μL of Custer catalyst (Pt, 300 ppm) were added to a three-necked flask and reacted at 85° C. for 7 h to obtain a crude product of end-hydroxyl silicone-modified perfluoropolyether. The infrared spectrum is shown in FIG2 .

[0044] The mixture was then cooled to room temperature, 10.8 g of triethylamine was added, and then 14.3 g of methacryloyl chloride was added dropwise. After the addition was complete, the temperature was raised to 40°C and stirred for 5 h. The mixture was then cooled to room temperature, 30 mL of methanol was added, and the mixture was rapidly stirred for 5 min. The mixture was allowed to stand to separate the upper layer, and the lower layer was repeatedly washed with methanol three times. Finally, the solvent in the lower layer was removed under reduced pressure, and the product was diluted with methyl isoamyl ketone (MIBK) to a mass fraction of 30%, thereby obtaining a methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent A, the infrared spectrum of which is shown in Figure 3.

[0045] Example 2

[0046] This embodiment provides a terminal acrylate organosilicon-modified perfluoropolyether UV anti-fingerprint agent, which is prepared by the following steps:

[0047] 100 g of FES-1, 20 mL of m-ditrifluorotoluene, 9 g of 2,2-bis(hydroxymethyl)-1,3-propylene glycol allyl ether, and 20 μL of Custer catalyst (Pt, 300 ppm) were added to a three-necked flask and reacted at 85 °C for 7 h.

[0048] The mixture was then cooled to room temperature, 10.8 g of triethylamine was added, and then 12.4 g of acryloyl chloride was added dropwise. After the addition was complete, the temperature was raised to 40°C and stirred for 5 h. The mixture was then cooled to room temperature, 30 mL of methanol was added, and the mixture was rapidly stirred for 5 min. The mixture was allowed to stand to separate the upper layer, and the lower layer was repeatedly washed with methanol three times. Finally, the solvent was removed from the lower layer under reduced pressure, and the product was diluted with methyl isoamyl ketone (MIBK) to a mass fraction of 30%, thereby obtaining a terminal acrylate organosilicon-modified perfluoropolyether UV anti-fingerprint agent B. The infrared spectrum is shown in FIG4 .

[0049] Example 3

[0050] This embodiment provides a methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent, which is prepared by the following steps:

[0051] 60 g of FES-1, 15 mL of m-ditrifluorotoluene, 3.6 g of trimethylolpropane allyl ether, and 20 μL of Custer catalyst (Pt, 300 ppm) were added to a three-necked flask and reacted at 85 °C for 7 h.

[0052] The reaction mixture was then cooled to room temperature, 4.0 g of triethylamine was added, and then 4.8 g of methacryloyl chloride was added dropwise. After the addition was complete, the temperature was raised to 40° C. and stirred for 3 h. The temperature was then lowered to room temperature, 30 mL of methanol was added, and the mixture was rapidly stirred for 5 min. The upper layer was allowed to stand to separate, and the lower layer was repeatedly washed with methanol three times. Finally, the lower layer was decompressed to remove the solvent, and the product was diluted with MIBK to a mass fraction of 30% to obtain a terminal methacrylate silicone-modified perfluoropolyether UV anti-fingerprint agent C.

[0053] Example 4

[0054] This embodiment provides a methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent, which is prepared by the following steps:

[0055] 100 g of FES-2 (molecular weight of about 7900, determined by HNMR; the PFPE segment is Z-type PFPE, molecular weight of about 2500, determined by FNMR), 30 mL of m-ditrifluorotoluene, 8.0 g of 2,2-bis(hydroxymethyl)-1,3-propylene glycol allyl ether, and 20 μL of Custer catalyst (Pt, 300 ppm) were added to a three-necked flask and reacted at 85° C. for 7 h.

[0056] The reaction mixture was then cooled to room temperature, 8.5 g of triethylamine was added, and then 10.3 g of methacryloyl chloride was added dropwise. After the addition was complete, the temperature was raised to 40°C and stirred for 3.5 hours. The temperature was then lowered to room temperature, 30 mL of methanol was added, and the mixture was rapidly stirred for 5 minutes. The upper layer was allowed to stand to separate, and the lower layer was repeatedly washed with methanol three times. Finally, the lower layer was decompressed to remove the solvent, and the product was diluted with MIBK to a mass fraction of 30% to obtain a terminal methacrylate silicone-modified perfluoropolyether UV anti-fingerprint agent D.

[0057] Example 5

[0058] This embodiment provides a methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent, which is prepared by the following steps:

[0059] 100 g of FES-3 (molecular weight of about 5100, determined by HNMR; the PFPE segment is Z-type PFPE, molecular weight of about 1700, determined by FNMR), 30 mL of m-ditrifluorotoluene, 14.0 g of 2,2-bis(hydroxymethyl)-1,3-propylene glycol allyl ether, and 40 μL of Custer catalyst (Pt, 300 ppm) were added to a three-necked flask and reacted at 85° C. for 7 h.

[0060] The mixture was then cooled to room temperature, 13.3 g of triethylamine was added, followed by the dropwise addition of 16.0 g of methacryloyl chloride. After the addition was complete, the temperature was raised to 40°C and stirred for 5.5 hours. The mixture was then cooled to room temperature, 50 mL of methanol was added, and the mixture was rapidly stirred for 5 minutes. The mixture was allowed to stand for 5 minutes to separate the upper layer, and the lower layer was repeatedly washed with methanol three times. Finally, the solvent in the lower layer was removed under reduced pressure, and the product was diluted with MIBK to a mass fraction of 30%, yielding a methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent E.

[0061] Example 6

[0062] This embodiment provides a methacrylate-terminated silicone-modified perfluoropolyether UV anti-fingerprint agent, which is prepared by the following steps:

[0063] 30 g of FES-1, 5 mL of m-ditrifluorotoluene, 2.8 g of methacryloxypropyldimethylmethoxysilane, and 0.2 g of tris(pentafluorophenyl)borane were added to a three-necked flask and reacted at room temperature for 2 h, then heated to 60°C for 5 h. The mixture was cooled to room temperature, 100 mL of methanol was added, and the mixture was rapidly stirred for 5 min. The mixture was allowed to stand to separate the upper layer, and the lower layer was repeatedly washed with methanol three times. Finally, the solvent in the lower layer was removed under reduced pressure, and the product was diluted with MIBK to a mass fraction of 30% to obtain a terminal methacrylate silicone-modified perfluoropolyether UV anti-fingerprint agent F.

[0064] Example 7

[0065] The preparation was carried out according to the method of Example 6, wherein FES-1 was replaced with FES-2 to obtain a methacrylate-terminated organosilicon-modified perfluoropolyether UV anti-fingerprint agent G.

[0066] Example 8

[0067] The preparation was carried out according to the method of Example 6, wherein FES-1 was replaced with FES-3 to obtain a methacrylate-terminated organosilicon-modified perfluoropolyether UV anti-fingerprint agent H.

[0068] Comparative Example 1

[0069] Japan Shin-Etsu KY-1203.

[0070] Preparation of coatings and paint films

[0071] A basic UV coating was prepared according to the following formulation: 100 parts by mass of 9-functionality polyurethane acrylate (CN9013NS, Sartomer, USA), 70 parts by mass of propylene glycol methyl ether acetate, 60 parts by mass of butyl acetate, 12 parts by mass of isopropyl alcohol, and 3 parts by mass of a photoinitiator (IRGACURE 184, BASF). The weight and content of the anti-fingerprint agent in the formulation are shown in Table 1.

[0072] Table 1 Formulation of UV coating samples with anti-fingerprint agent

[0073] The prepared coating was applied to a polycarbonate plastic sheet using a doctor blade to a coating thickness of 1-2 μm, and then baked in a forced air drying oven at 80°C for 3 minutes. The baked plastic sheet was then placed in a UV curing machine for light curing. The light source was a high-pressure mercury lamp with an output power of 80 W / cm and a cumulative brightness of 1600 mJ / cm. 2 The performance test of the samples was carried out, and the test results are shown in Table 2.

[0074] Table 2 Performance test results of samples

[0075] According to the test results shown in Table 2, it can be seen that the performance of the methacrylate-terminated silicone-modified perfluoropolyether anti-fingerprint agents A, C, D and E prepared in the present invention is close to that of Shin-Etsu KY-1203.

Claims

1. A preparation method of a silicone-modified perfluoropolyether UV fingerprint-proof agent, which comprises the following steps: (a) Add the silicone-modified perfluoropolyether into a fluorocarbon solvent, then add an alcohol compound containing a terminal propenyl group and a catalyst to react, obtaining a hydroxy-containing silicone-modified perfluoropolyether solution; wherein, the molar ratio of the alcohol compound containing a terminal propenyl group to the silicone-modified perfluoropolyether is 1.8 - 3:1; (b) In the hydroxy-containing silicone-modified perfluoropolyether solution obtained in step (a), first add an acid-binding agent, then dropwise add acryloyloxy chloride to react, obtaining a crude product; wherein, the molar ratio of the acid-binding agent to the silicone-modified perfluoropolyether is 6 - 10:1, and the molar ratio of the acryloyloxy chloride to the silicone-modified perfluoropolyether is 6 - 12:1; (c) In the crude product of step (b), add an organic alcohol compound for treatment, after liquid separation and standing, take out the lower layer liquid, and obtain the silicone-modified perfluoropolyether UV fingerprint-proof agent through rotary evaporation.

2. The preparation method according to claim 1, wherein, The structure of the silicone-modified perfluoropolyether is R f -b-R; Among them, R f is perfluoropolyether, and R is polysiloxane.

3. The preparation method according to claim 2, wherein, The perfluoropolyether includes one or a combination of two or more of K-type perfluoropolyether, D-type perfluoropolyether, Y-type perfluoropolyether, and Z-type perfluoropolyether.

4. The preparation method according to claim 3, wherein, The perfluoropolyether includes one or a combination of two or more of bis-terminal Z-type perfluoropolyether allyl ether, bis-terminal K-type perfluoropolyether allyl ether, bis-terminal Z-type perfluoropolyether acrylate, bis-terminal Z-type perfluoropolyether methacrylate, bis-terminal K-type perfluoropolyether acrylate, bis-terminal K-type perfluoropolyether methacrylate, bis-terminal D-type perfluoropolyether acrylate, and bis-terminal D-type perfluoropolyether methacrylate.

5. The preparation method according to claim 2, wherein, The polysiloxane includes one or a combination of two of hydrogen-containing silicone oil and mercapto-containing silicone oil; The hydrogen-containing silicone oil includes one or a combination of two or more of mono-terminal silicon hydride silicone oil, bis-terminal silicon hydride silicone oil, and side silicon hydride silicone oil; The mercapto-containing silicone oil includes one or a combination of two of terminal mercapto silicone oil and side mercapto silicone oil.

6. The preparation method according to claim 2, wherein, The silicone-modified perfluoropolyether is as follows: The molecular weight is 5100 - 30000.

7. The preparation method according to claim 1, wherein, The fluorocarbon solvent includes one or a combination of two or more of nonafluorobutyl ethyl ether, nonafluorobutyl methyl ether, trifluorotoluene, 1,3-bis(trifluoromethyl)benzene, perfluorocycloether, and perfluorohexane.

8. The preparation method according to claim 1, wherein, The catalyst includes one or a combination of two or more of Karstedt catalyst, Speier catalyst, benzoyl peroxide, di-tert-butyl peroxide, and Pt / C.

9. The preparation method according to claim 1, wherein, The dosage of the catalyst is 0.01% - 10% of the total mass of the reactants in step (a).

10. The preparation method according to claim 1, wherein, The alcohol compound containing terminal propenyl includes one or a combination of two or more of hydroxyethyl acrylate, hydroxyethyl methacrylate, pentaerythritol triacrylate, pentaerythritol allyl ether, pentaerythritol di-allyl ether, 2,2-bis(hydroxymethyl)-1,3-propanediol allyl ether, and trimethylolpropane allyl ether.

11. The preparation method according to claim 1, wherein, the reaction temperature in step (a) is 40 - 200 °C, and the reaction time is 0.5 - 72 h.

12. The preparation method according to claim 1, wherein, the acid-binding agent includes one or a combination of two or more of triethylamine, tripropylamine, tributylamine, pyridine, N,N-diisopropylethylamine, 4-methylimidazole, potassium carbonate, sodium carbonate, potassium hydroxide, and sodium hydroxide.

13. The preparation method according to claim 1, wherein, the acryloyloxy chloride is methacryloyl chloride or acryloyl chloride.

14. The preparation method according to claim 1, wherein, the reaction temperature in step (b) is 0 - 90 °C, and the reaction time is 0.3 - 24 h.

15. The preparation method according to claim 1, wherein, the organic alcohol compound includes one or a combination of two or more of methanol, ethanol, isopropanol, n-butanol, isobutanol, and isoamyl alcohol.

16. An organosilicon-modified perfluoropolyether UV fingerprint-proof agent prepared by the preparation method according to claim 1.

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