KR101990090B1 - Glass coating Composition for preventing a fingerprint from becoming conspicuous, Method for Producing the Same and Glass coating layer - Google Patents

Abstract

--------------[화학식 1]A glass coating composition having a function of preventing the appearance of fingerprints, a method of producing the same, and a glass coating layer having a function of preventing the appearance of fingerprints, the coating composition having a function of preventing fingerprints, comprises a compound represented by Chemical Formula 1 and a solvent.

[Chemical Formula 1]

Description

Technical Field [0001] The present invention relates to a glass coating composition having a function of preventing the appearance of fingerprints, a method of producing the same, and a glass coating film having a function of preventing fingerprints from appearing,

The present invention relates to a glass coating composition having a function of preventing the appearance of fingerprints, a method of manufacturing the same, and a glass coating film having a function of preventing the appearance of fingerprints. More specifically, the present invention relates to a glass coating film having a fingerprint- And a glass coating film having a function of preventing fingerprints from appearing.

A display unit or a touch panel of an electronic product such as a TV, a mobile phone, a notebook computer, a PC, or a PDA can be easily contaminated by pollutants including various foreign substances such as oil, fingerprints and sebum, Or it becomes apparently messy.

In particular, the importance of the touch screen as a key component for various digital devices that transmit or exchange information to one or both of a mobile communication device such as a smart phone, a computer, a camera, a certificate issuer, a cash dispenser, And the use range is rapidly spreading.

A method of forming a specific pattern on the outer surface of a product or a method of forming a water-repellent or oil repellent film is known in order to impart emotion to an electronic product such as a display device.

However, according to the previously known method of forming a specific pattern or protrusion, the transparency decreases and the haze increases, thereby reducing the sharpness of the screen in a display device or the like, or when an excessive amount of fingerprint is transferred, There is a limit in that the removal becomes rather difficult.

Water-repellent, oil-repellent coatings are not capable of preventing the attachment of lipids, which are the main components of the fingerprint, and the fingerprints are easily wiped. On the other hand, the attached fingerprints are more likely to become dirty in the oily film, and the display surface becomes dirty.

On the other hand, it is also known to use a coating material containing a fluorine-based compound to lower the surface energy of the exterior of the product to secure the contamination characteristics. However, depending on the coating of the coating material containing the fluorine-based compound, the contact angle with respect to water and oil may be increased to improve the water repellency and oil-repellency characteristics. However, Not suitable for contact applications.

In order to solve such a problem, Japanese Unexamined Patent Publication (Kokai) No. 10-0080880 discloses a fingerprint display preventing film containing a compound of Chemical Formula 1. However, this technology causes odor during vacuum deposition and has low slip property.

_---------- <화학식 1>

_&Lt; Formula 1 >

In addition, Japanese Unexamined Patent Application Publication No. 10-2013-0013059 discloses a fingerprint display preventing film containing a compound of the general formula (2).

------------<화학식 2>

(2)

In the case of the formula (2), the slip property is improved as compared with the fingerprint appearance preventive film containing the compound of the formula (1), but the easiness of scouring the fingerprint is poor, Also, when the molecular weight is large, there is a problem that there is no adhesive force in the spraying method and evaporation is not performed in the vacuum deposition.

Disclosure of the Invention The present invention provides a glass coating composition having a function of preventing the appearance of a fingerprint, which is excellent in scratching fingerprints on the surface of a glass and capable of forming a coating film with little discoloration, and a method for producing the same. have.

Another object of the present invention is to provide a glass coating film having a fingerprint appearance preventing function.

A coating composition having a fingerprint appearance preventing function according to an embodiment of the present invention includes a compound represented by the following formula (I) and a solvent.

--------------[화학식 1]

[Chemical Formula 1]

Wherein R ₁ is an alkyl group having 1 to 18 carbon atoms, R ₃ is hydrogen or an alkyl group having 1 to 4 carbon atoms, and n is an integer of 1 to 4, R ₁ is a divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, R ₂ is an alkyl group having 1 to 18 carbon atoms, to be.

In one embodiment, it is preferable that R 3 in the formula (1) is hydrogen or an alkyl group having 1 to 4 carbon atoms, and Dimer is prepared by subjecting two kinds of trialkoxysilane to hydrolysis and condensation reaction.

In one embodiment, R ₁ is a linear divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, or R 1 may be a divalent saturated hydrocarbon bonding group having an oxygen atom having 3 to 24 carbon atoms at an intermediate position.

In one embodiment, R 2 may be a straight chain alkyl group having 1 to 18 carbon atoms or a straight chain alkyl group having 1 to 10 carbon atoms perfluorinated alkyl group.

 In one embodiment, the compound of Formula 1 may be contained in the range of 0.01 to 40 parts by weight based on 100 parts by weight of the solvent in the glass coating composition having the fingerprint image-preventing function.

In one embodiment, the solvent includes methanol, ethanol, isopropanol, methyl ethyl ketone, acetone, and propylene glycol monomethyl ether acetate.

In order to prepare a glass coating composition having a function of preventing the appearance of fingerprints according to an embodiment of the present invention, 0.01 to 49.5 parts by weight of a silane compound having an R1 group represented by the following general formula (1), 0.01 to 50 parts by weight of a silane compound having an R2 group 49.5 parts by weight of distilled water, 0.5 to 2.0 parts by weight of distilled water (H2O), and 50 to 80 parts by weight of an organic solvent are mixed to prepare a compound represented by the following formula (1). Subsequently, by diluting the compound of the following formula (1) with a solvent, a glass coating composition having a function of preventing fingerprints can be obtained.

--------------[화학식 1]

[Chemical Formula 1]

Wherein n is an integer of 1 to 4, R1 is a divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, R2 is an alkyl group having 1 to 18 carbon atoms, and R3 is hydrogen or an alkyl group having 1 to 4 carbon atoms.

The glass coating film having the fingerprint appearance preventing function according to an embodiment of the present invention includes the above-described Formula 1.

The coating composition according to the present invention has an excellent fingerprint appearance preventing function when a film is formed on a substrate by various methods.

Hereinafter, a glass coating composition having a preventive function of the present invention and a method for producing the same will be described in detail. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are further described in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In this application, the terms "comprises" or "having", etc. are intended to specify the presence of stated features, components, steps, processes, compositions, or combinations thereof in the specification, and not to limit the presence or addition of one or more other features or components, Steps, processes, compositions, or combinations thereof, which are not intended to be limiting.

Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

A glass coating composition having a finger print preventing function

A glass coating composition having a fingerprint appearance preventive function according to an embodiment of the present invention comprises a compound of formula (I) and a solvent.

--------------[화학식 1]

[Chemical Formula 1]

Wherein n is an integer of 1 to 4, R1 is a divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, R2 is an alkyl group having 1 to 18 carbon atoms, and R3 is hydrogen or an alkyl group having 1 to 4 carbon atoms.

In one embodiment, in the above formula (1), R 3 is hydrogen or an alkyl group having 1 to 4 carbon atoms, and Dimer is preferably prepared by subjecting two kinds of trialkoxysilane to hydrolysis and condensation reaction.

In one embodiment, R1 may be a linear divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, or R1 may be a divalent saturated hydrocarbon bonding group containing an oxygen element having 3 to 24 carbon atoms at an intermediate position.

In one embodiment, R 2 may be a straight chain alkyl group having 1 to 18 carbon atoms or a straight chain alkyl group having 1 to 10 carbon atoms perfluorinated alkyl group.

Specifically, examples of the silane compound containing an R 1 group and the silane compound containing an R 2 group, which are applied when preparing the compound of Formula 1, include 11- (2-methoxyethoxy) undecyltrimethoxysilane, 11- Ethoxy) undecyltrimethoxysilane, 11- (2-methoxyethoxy) undecylmethyldiethoxysilane, 11- [2- (2-methoxyethoxy) ethoxy] undecyltrimethoxysilane, 11- (2-ethoxyethoxy) undecyltrimethoxysilane, 11- (2-ethoxyethoxy) ethoxy] undecyltriethoxysilane, Undecyltrimethoxysilane, 11- [2- (2-ethoxyethoxy) ethoxy] undecyltriene, 11- [2- (2-ethoxyethoxy) ethoxy] undecyltrimethoxysilane, (2-phenoxyethoxy) undecyltrimethoxysilane, 11- (2-phenoxyethoxy) undecyltriethoxysilane, 11- (6- (2-methoxyethoxy) Hexyloxy) undecyltrimethoxysilane, 11- (10- (2-methoxyethoxy) disiloxy) undecyltrimethoxysilane, Butoxysilane, tetraethoxysilane, tetrapropoxysilane, tetraisopropoxysilane, tetra-n-butoxysilane, tetra-sec-sec- Butoxy silane, tetra-tert-butoxysilane, trimethoxysilane, triethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, Vinyltriethoxysilane, vinyltriethoxysilane, allyltrimethoxysilane, phenyltrimethoxysilane, phenyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, allyltrimethoxysilane, allyltrimethoxysilane, Silane, allyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, octyltrimethoxysilane, (3,3,3-trifluoropropyl) trimethyl Hexyltrimethoxysilane, perfluorodecyltrimethoxysilane, perfluorodecyltrimethoxysilane, Silane, a nonadecyl and the like silane and a derivative thereof in a tree-decyl silane, perfluoro hexyl in trifluoromethyl.

 In one embodiment, the solvent includes methanol, ethanol, isopropanol, methyl ethyl ketone, acetone, and propylene glycol monomethyl ether acetate.

 In one embodiment, the content of the compound of Formula 1 in the glass coating composition having the function of preventing fingerprints may be in the range of 0.01 to 40 parts by weight based on 100 parts by weight of the solvent.

As the silane compound containing the R 1 group, the silane compound containing the R 2 group, or the oligomer among the compounds of the formula (1), it may be a self-emissive coating composition which prevents the fingerprint image itself. When each of the above silane compounds is coated on glass, it has good to good weatherability. However, the compound according to the present invention has excellent slip properties as well as coatability during coating.

In order to prepare a glass coating composition having a function of preventing fingerprints from appearing according to an embodiment of the present invention, 0.01 to 49.5 parts by weight of a silane compound having an R 1 group of Formula 1, 0.01 to 49.5 parts by weight of a silane compound having an R 2 group 0.5 to 2.0 parts by weight of distilled water (H2O) and 50 to 80 parts by weight of an organic solvent are mixed and reacted at about 60 to 80 DEG C for about 11 to 14 hours. Thereafter, the solvent remaining in the solvent is removed by vacuum depressurization to prepare a compound of the above formula (1) in a viscous, transparent liquid state.

Subsequently, by diluting the compound of the following formula (1) with a solvent, a glass coating composition having a function of preventing fingerprints can be obtained.

The glass coating layer having the function of preventing fingertip display failure according to an embodiment of the present invention may be formed by directly applying the composition for preventing fingerprints from forming on a glass substrate or by vacuum deposition And is not particularly limited.

As an example, functional groups having active hydrogens, that is, hydroxyl groups, carboxyl groups, thiol groups, sulfonic acid groups, and the like, may be present on the organic substrate surface. When a functional group having an active hydrogen is not present on the surface of the base material, or if it is present or absent, a treatment for imparting a functional group having active hydrogen to the surface of the glass base material may be performed. This treatment can be carried out by a known method such as corona discharge treatment, UV / ozone treatment, oxygen plasma treatment, compound oxidizing agent treatment such as potassium permanganate solution and the like.

That is, the fingerprint appearance preventing film may be formed on a surface of a display, a touch panel, or an information terminal using a glass substrate. Such a display may also be one of a CRT, LCD, PDP, LED or FED. A notebook computer, a mobile phone, a navigation system, a cash dispenser, or the like, in which dirt due to fingerprint is not conspicuous if the display or the touch panel itself or an information terminal employing them are manufactured.

It is necessary that the fingerprint appearance preventing film according to the present invention has optical characteristics such as transmittance and refractive index not to affect the color tone or gloss displayed on the substrate such as a display and does not impair the operability of the touch panel.

Hereinafter, the present invention will be described in more detail by way of Examples and Comparative Examples. Which are illustrative and not intended to limit the scope of the invention.

Production Example 1

35 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 33 g of propyltrimethoxysilane, 70 g of methyl ethyl ketone and distilled water (H ₂ O) were added to a dry 250 mL three-necked flask equipped with a condenser and a stirrer, And the mixture was stirred at room temperature for 1 hour and then at 70 ° C for 12 hours. Thereafter, the solvent was removed under reduced pressure by vacuum to obtain a viscous transparent liquid coating composition.

Production Example 2

The same procedure as in Production Example 1 was carried out except that 49 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 23 g of propyltrimethoxysilane, 70 g of methyl ethyl ketone and 1.8 g of distilled water (H ₂ O) were used.

Production Example 3

Except that 56 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 13 g of propyltrimethoxysilane, 70 g of methyl ethyl ketone and 2.2 g of distilled water (H ₂ O) were used.

Production Example 4

The same procedure as in Production Example 1 was carried out except that 30 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 40 g of octyltrimethoxysilane, 70 g of methyl ethyl ketone and 2.3 g of distilled water (H ₂ O) were used.

Production Example 5

Except that 42 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 28 g of octyltrimethoxysilane, 70 g of methyl ethyl ketone and 2.2 g of distilled water (H ₂ O) were used.

Production Example 6

The same procedures as in Production Example 1 were carried out except that 53 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 18 g of octyltrimethoxysilane, 70 g of methyl ethyl ketone and 2.0 g of distilled water (H ₂ O) were used.

Production Example 7

Except that 16 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 53 g of perfluorodecyltrimethoxysilane, 70 g of methyl ethyl ketone and 1.3 g of distilled water (H ₂ O) were used. same.

Production Example 8

Except that 27 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 44 g of perfluorodecyltrimethoxysilane, 70 g of methyl ethyl ketone and 1.4 g of distilled water (H ₂ O) were used. same.

Production Example 9

Except that 39 g of 1,1- (2-methoxyethoxy) undecyltrimethoxysilane, 31 g of perfluorodecyltrimethoxysilane, 70 g of methyl ethyl ketone and 1.5 g of distilled water (H ₂ O) were used. same.

Comparative Example 1

Except that 70 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 70 g of methyl ethyl ketone and 3.6 g of distilled water (H ₂ O) were used.

Comparative Example 2

Except that 44 g of 11- (2-methoxyethoxy) undecyltrimethoxysilane, 26 g of cyclohexyltrimethoxysilane, 70 g of methyl ethyl ketone and 2.3 g of distilled water (H ₂ O) were used .

Example 1

The coating composition prepared in Preparation Example 1 was dissolved in methyl ethyl ketone and propylene glycol monomethyl ether acetate in an amount of 30 parts by weight. Thereafter, 0.1 g of the coating composition was applied to a tablet (weight: 0.5 g) produced using steel wool, and then the solvent was volatilized to prepare a vacuum evaporation tablet. Subsequently, an electron beam was applied onto the glass in the vacuum evaporator to which the tablet was applied to form a film. At this time, the inside of the vacuum evaporator is maintained at a pressure of about 5 * 10 -5 torr, and the tablet is heated to about 400 캜 on a molybdenum boat to evaporate the compound of formula (1).

Example 2

The procedure of Example 1 was repeated except that the coating composition of Preparation Example 2 was used instead of the coating composition of Preparation Example 1. [

Example 3

The same procedure as in Example 1 was followed except that the coating composition of Preparation Example 3 was used instead of the coating composition of Preparation Example 1. [

Example 4

The procedure of Example 1 was repeated except that the coating composition of Preparation Example 4 was used in place of the coating composition of Preparation Example 1. [

Example 5

The same procedure as in Example 1 was followed except that the coating composition of Preparation Example 5 was used instead of the coating composition of Preparation Example 1. [

Example 6

The procedure of Example 1 was repeated except that the coating composition of Preparation Example 6 was used instead of the coating composition of Preparation Example 1. [

Example 7

The same procedure as in Example 1 was followed except that the coating composition of Preparation Example 7 was used instead of the coating composition of Preparation Example 1. [

Example 8

The procedure of Example 1 was repeated except that the coating composition of Preparation Example 8 was used instead of the coating composition of Preparation Example 1. [

Example 9

The same procedure as in Example 1 was followed except that the coating composition of Preparation Example 9 was used instead of the coating composition of Preparation Example 1. [

Example 10

The procedure of Example 1 was repeated except that the coating composition of Comparative Example 1 was used instead of the coating composition of Preparation Example 1. [

Example 11

The procedure of Example 1 was repeated except that the coating composition of Comparative Example 2 was used instead of the coating composition of Preparation Example 1. [

Example 12

The coating composition of Preparation Example 1 was diluted to 0.05 part by weight in methyl ethyl ketone and propylene glycol monomethyl ether acetate and coated on glass with a fine spray robot (ATOMAX nozzle). At this time, the spraying conditions were 8 ml / min, 30 cm / s, 0.1 MPa, and cured by hot air drying at 140 ° C for 10 minutes.

Example 13

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 2 was used instead of the coating composition of Preparation Example 1. [

Example 14

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 3 was used instead of the coating composition of Preparation Example 1. [

Example 15

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 4 was used instead of the coating composition of Preparation Example 1. [

Example 16

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 5 was used instead of the coating composition of Preparation Example 1. [

Example 17

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 6 was used instead of the coating composition of Preparation Example 1. [

Example 18

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 7 was used in place of the coating composition of Preparation Example 1. [

Example 19

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 8 was used instead of the coating composition of Preparation Example 1. [

Example 20

The procedure of Example 12 was repeated except that the coating composition of Preparation Example 9 was used instead of the coating composition of Preparation Example 1. [

Example 21

The procedure of Example 12 was repeated except that the coating composition of Comparative Example 1 was used instead of the coating composition of Preparation Example 1. [

Example 22

The procedure of Example 12 was repeated except that the coating composition of Comparative Example 2 was used instead of the coating composition of Preparation Example 1. [

[Table 1]

The characteristics of the examples described in the above Table 1 are evaluated and shown in the following manner. Examples 1-11 are the results of the dry process (vacuum deposition), and Examples 12-22 are the results of the wet process (spray coating)

Test Method 1

Discoloration after applying fingerprints on the coating surface:

The color change (ΔE) was measured after stamping the coated specimen with jojoba oil containing fingerprint-like ingredients instead of fingerprints. The discoloration (DELTA E) indicates that the display image becomes more distinct as the value is smaller. Measurement of discoloration uses color difference (quantification of color difference), and it is possible to calculate ΔE as color difference equation.

Test Method 2

Fading occurs after rubbing on the coated surface with fingerprints:

After performing Test Method 1, a 100 g weight of 1 cm ² was wrapped in a jute, and the contaminated portion was rubbed 5 times and discoloration (DELTA E) was measured.

Referring to Table 1, the coating compositions prepared in Preparation Examples 1 to 9 were compared with the coating compositions prepared in Preparation Examples 1 to 9, and the values of ΔE were smaller than those of the coating compositions prepared in Comparative Examples 1 and 2. This means that the display image is seen more clearly. Particularly, in Examples 7, 8, 9, 18, 19 and 20, the coating compositions prepared in Production Examples 7 to 9 are fluorine-containing compounds, and ΔE values are smaller than those of the other coating compositions. Also, it can be seen that the value of DELTA E is lowered when erased.

Test Method 3

Friction coefficient:

The coefficient of dynamic friction was measured according to ASTM D4917 using a friction coefficient measuring device (Labthink Co., FPT-F1) as the friction material. Specifically, the glass coated with the above coating composition was contacted with paper, a load of 200 gf was applied thereto, and thereafter, the coefficient of dynamic friction was measured by equilibrium movement at a speed of 150 mm / min under a load applied condition.

From the results of the friction coefficient measurement, it can be seen that the coating compositions prepared in Preparation Examples 1 to 9 have a lower friction coefficient than the coating compositions prepared in Comparative Examples 1 and 2. In particular, it can be confirmed that Examples 7, 8, 9, 18, 19 and 20 have excellent slip properties.

The glass coating composition having the fingerprint appearance preventive function according to the present invention can be used for a fingerprint prevention treatment on a substrate such as glass.

Claims (11)

1. A glass coating composition having a fingerprint print preventing function comprising a compound of the following formula (1) and a solvent.

[Chemical Formula 1]
(Wherein n is an integer of 1 to 4, R1 is a divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, R2 is an alkyl group having 1 to 18 carbon atoms, and R3 is an alkyl group having 1 to 4 carbon atoms. ) The glass coating composition according to claim 1, wherein R3 is hydrogen or an alkyl group having 1 to 4 carbon atoms. The method according to claim 1, wherein R1 is a linear divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, or R1 is a divalent saturated hydrocarbon bonding group having an oxygen atom having 3 to 24 carbon atoms at an intermediate position. &Lt; / RTI &gt; The glass coating composition according to claim 1, wherein R 2 is a linear alkyl group having 1 to 18 carbon atoms or a linear alkyl group having 1 to 10 carbon atoms and a perfluorinated alkyl group. delete The glass substrate according to claim 1, wherein the solvent comprises at least one selected from the group consisting of methanol, ethanol, isopropanol, methyl ethyl ketone, acetone, and propylene glycol monomethyl ether acetate. Composition. The glass coating composition according to claim 1, wherein the content of the compound of formula (1) is in the range of 0.01 to 40 parts by weight based on 100 parts by weight of the solvent. 0.01 to 49.5 parts by weight of a silane compound having an R 1 group represented by the following formula (1), 0.01 to 49.5 parts by weight of a silane compound having an R 2 group represented by the following formula (1), 0.5 to 2.0 parts by weight of distilled water (H 2 O) To obtain a compound of the formula (1); And
A process for preparing a glass coating composition having a fingerprint appearance preventing function comprising the step of diluting a compound of the following formula (1) with a solvent.

[Chemical Formula 1]
(Wherein n is an integer of 1 to 4, R1 is a divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, R2 is an alkyl group having 1 to 18 carbon atoms, and R3 is an alkyl group having 1 to 4 carbon atoms. ) The process for preparing a glass coating composition according to claim 8, wherein R 2 is a straight chain alkyl group having 1 to 18 carbon atoms. And R &lt; 2 &gt; is a saturated divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, or R1 is a divalent saturated hydrocarbon bonding group containing an oxygen element having 3 to 24 carbon atoms at an intermediate position, A straight chain alkyl group having 1 to 18 carbon atoms or a straight chain alkyl group having 1 to 10 carbon atoms perfluoroalkyl group. A glass coating film having a fingerprint appearance preventive function comprising the following formula (1).

[Chemical Formula 1]
(Wherein n is an integer of 1 to 4, R1 is a divalent saturated hydrocarbon bonding group having 3 to 24 carbon atoms, R2 is an alkyl group having 1 to 18 carbon atoms, and R3 is an alkyl group having 1 to 4 carbon atoms. )