KR20080091728A - Anti-finger printing photocurable composition, anti-finger printing film and optical display - Google Patents

Abstract

An anti-finger printing photocurable composition is provided to improve finger printing resistance of an optical display device surface by a very simple process such as coating. An anti-finger printing photocurable composition includes a polyether skeleton-containing urethane resin. The polyether skeleton-containing urethane resin comprises an alkylene oxide having at least three carbon atoms. The polyether skeleton-containing urethane resin has a structure represented by the following formula 1. An average molecular weight of the polyether skeleton part is 1000 or greater, with the proviso that when plural polyether skeleton parts are present in the molecule, the average molecular weight is the sum of the plural polyether skeleton parts. In the formula 1, X represents a polyether skeleton, and R represents H or CH3.

Description

ANTI-FINGER PRINTING PHOTOCURABLE COMPOSITION, ANTI-FINGER PRINTING FILM AND OPTICAL DISPLAY}

The present invention relates to a photocurable composition capable of imparting anti-fingerprint to transparent substrates such as various transparent plastic films, transparent plastic plates, and glass, and an anti-fingerprint film having a coating layer formed of the anti-fingerprint photocurable composition.

BACKGROUND ART Liquid crystal displays (liquid crystal displays) have recently been used in various fields such as computers, word processors, televisions, mobile phones, portable information terminal devices, portable game machines, and the like. Moreover, what is called a touch panel display which has a mechanism which operates an apparatus by pressing the display on a screen is rapidly spreading. Such a touch panel display may include, for example, a guide display device installed in a facility such as a bank ATM, a vending machine, a portable information terminal (PDA), a copy machine, a facsimile machine, a game machine, a museum, and a department store, a car navigation system, a multimedia station (which is installed in a convenience store). It is widely used in multifunctional terminals), mobile phones, and monitoring devices for railway vehicles.

Regarding such an optical display device such as a liquid crystal display device or a touch panel display, so-called fingerprint properties such that fingerprint traces can be easily wiped off even if no fingerprint traces remain on the surface of these optical display devices or fingerprint traces remain. It is becoming. With regard to these optical display devices, there is a further demand for viable scavenging resistance, in which traces of saturation due to use remain. In particular, in a touch panel display, since a finger touches the display surface, a fingerprint trace by lipid components such as sebum is attached to the surface, and the adhesion of the fingerprint trace prevents visibility and operability of the device terminal. There is a problem.

As a method of improving the antifouling property such as anti-fingerprint on the surface of an optical display device, a method of improving the antifouling property (water / oil repellency) of the surface by applying silicone oil or a fluoropolymer has been proposed. However, this method has a drawback that, since only the antifouling agent is applied to the surface, the antifouling agent is immediately lost and the antifouling effect does not last long, that is, the antifouling durability is inferior. On the other hand, there also exists a method of improving the antifouling property, such as a fingerprint-proof, by providing a coating layer using the coating composition containing these additives, such as silicone oil and a fluoropolymer. However, these additives are generally called soft blocks and also have the property of providing flexibility to the resin. And by adding these, there exists a fault that mechanical strength, such as surface hardness of a coating layer, falls.

Japanese Unexamined Patent Application Publication No. 2004-230562 (Patent Document 1) is made of at least one surface of a transparent base film, which is made of a cured product of an ionizing radiation-sensitive resin composition, and is alkaline so that the contact angle of water on the surface is 70 ° or less. The hard coat film which provided the hard coat layer surface-treated by aqueous solution is described (claim 1). This hard coat film is prepared by hardening | curing the apply | coated composition once by ultraviolet irradiation etc. and then surface-treating using alkaline aqueous solution. This method is cumbersome because the process has to be surface-treated again after providing the hard coating layer.

Japanese Laid-Open Patent Publication No. 2006-43919 (Patent Document 2) discloses an energy ray after bonding a base film to an energy ray curable hard coating composition layer formed on a release film having an average surface roughness Ra of 0.1 μm or less, and then heating it. Thereby, the manufacturing method of the hard coat film which hardens the said energy-beam curable hard coat composition layer, and forms a hard coat layer in close contact with the said base film (claim 1) is described. This hard coat film aims at the improvement of fingerprint wiping by using the base film which has a smooth surface. Moreover, this hard coat film is characterized by providing the hard coat layer in a state sandwiched between the release film and the base film. Therefore, this manufacturing method also requires a preparation step for bringing the hard coating layer into place, which is cumbersome.

Japanese Unexamined Patent Publication No. 2007-34027 (Patent Document 3) describes a surface material for a display having an uneven surface (claim 1). And the uneven surface of this surface agent is formed by apply | coating an alumina sol liquid and then immersing in warm water (claim 2). As described herein, this surface material also requires a post-treatment step such as dipping, which is cumbersome.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2004-230562

[Patent Document 2] Japanese Patent Laid-Open No. 2006-43919

[Patent Document 3] Japanese Unexamined Patent Publication No. 2007-34027

This invention solves the said conventional problem, and the objective is to provide the anti-fingerprint photocurable composition which can improve the anti-fingerprint of the surface of an optical display apparatus by the very simple process by coating etc.

The present invention,

(A) A polyether skeleton-containing urethane resin containing an alkylene oxide having 3 or more carbon atoms, the polyether skeleton-containing urethane resin having the following formula:

[Formula 1]

[Wherein X represents a polyether skeleton and R represents H or CH ₃ ]

It has a structure represented by the above, and the average molecular weight of this polyether skeleton part is 1000 or more (However, when it has two or more polyether skeleton parts in a molecule, the average molecular weight which totaled these some polyether skeleton parts may be sufficient. The present invention provides an anti-fingerprint photocurable composition containing a polyether skeleton-containing urethane resin, which achieves the above object.

The anti-fingerprint photocurable composition includes (A) a polyether skeleton-containing urethane resin, (B) a photopolymerizable polyfunctional compound, and (C) a photopolymerization initiator,

This (A) polyether skeleton containing urethane resin is a polyether skeleton containing urethane resin obtained by addition-reacting (a) isocyanate and the polyether polyol containing (b) alkylene oxide of 3 or more carbon atoms. It is preferable.

Moreover, (A) polyether frame | skeleton containing urethane resin contains (a ') polyisocyanate, (b) polyether polyol containing alkylene oxide of 3 or more carbon atoms, and (c) hydroxyl group and photopolymerization. A polyether skeleton-containing urethane resin obtained by addition reaction of a group-containing monomer, provided that the polyether skeleton-containing urethane resin is represented by the following formula

[Wherein X represents a polyether skeleton and R represents H or CH ₃ ]

It is preferable that it is a polyether frame | skeleton containing urethane resin on condition that it has a structure represented by the following.

Moreover, it is preferable that the polyether polyol containing (b) alkylene oxide of 3 or more carbon atoms used for preparation of said (A) polyether skeleton containing urethane resin is less than HLB value (Davis method) 6 of a polyol skeleton part. .

Moreover, it is preferable that the repeating number of the polyether polyol containing the alkylene oxide of (b) carbon number 3 or more used for preparation of said (A) polyether skeleton containing urethane resin is 12-52.

Moreover, the said (A) polyether frame | skeleton containing urethane resin contains 99-50 weight% of polyether polyols containing (a) 1-50 weight% of isocyanates and (b) alkylene oxide of 3 or more carbon atoms. It is preferable that it is a polyether skeleton containing urethane resin obtained by addition reaction.

The polyether skeleton-containing urethane resin (A) is 94 to 30% by weight of (a ') 1 to 40% by weight of polyisocyanate and (b) alkylene oxide having 3 or more carbon atoms. It is preferable that it is a polyether skeleton containing urethane resin obtained by addition-reacting% and (c) 5-30 weight% of hydroxyl groups and a photopolymerizable group containing monomer.

Moreover, this invention is an anti-fingerprint photocurable composition containing the said (A) polyether skeleton containing urethane resin, (B) photopolymerizable multifunctional compound, and (C) photoinitiator,

This (A) polyether skeleton containing urethane resin is a polyether skeleton containing urethane resin containing a C3 or more alkylene oxide, (a ') polyisocyanate and (b) C3 or more alkylene oxide It also provides an anti-fingerprint photocurable composition prepared by addition reaction of a polyether polyol comprising a. It is preferable that the HLB value (Davis method) of the polyol frame | skeleton part of the polyether polyol containing this (b) C3 or more alkylene oxide is less than six.

In the anti-fingerprint photocurable composition,

(A) 0.1-30 weight% of polyether skeleton containing urethane resins,

(B) 50 to 99.9 wt% of a photopolymerizable multifunctional compound, and

(C) 0.1-20 weight% of photoinitiators

(However, all of the above components by weight are based on the weight of solids in the composition, and the total weight of solids of each component is 100% by weight).

It is preferable to include.

The present invention also provides an anti-fingerprint film having a transparent substrate and a coating layer, wherein the anti-fingerprint film is a coating layer formed by the anti-fingerprint photocurable composition.

The present invention also provides an optical display device wherein a coating layer formed of the anti-fingerprint photocurable composition is used for the outermost layer of a display.

By using the anti-fingerprint photocurable composition of this invention, the coating layer which has the outstanding anti-fingerprint on the surface of an optical display apparatus etc. can be provided more easily. The coating layer obtained by the anti-fingerprint photocurable composition of this invention is excellent also in transparency, and is very suitable for use on the surface of optical display apparatuses. The coating layer obtained by the anti-fingerprint photocurable composition of the present invention also has excellent bioglide resistance and film hardness of the surface. Even if it is a single | mono layer, the coating layer obtained by the anti-fingerprint photocurable composition of this invention has the outstanding anti-fingerprint property, high bioscuffing property, and the film hardness of the surface. Since the anti-fingerprint photocurable composition of the present invention is photocurable, there is an advantage that a coating layer having such excellent performance can be more easily formed on the surface of the optical display device. Therefore, by using the anti-fingerprint photocurable composition of this invention, the coating layer excellent in production efficiency and manufacturing cost, and the anti-fingerprint film which has this coating layer can be formed. Moreover, this coating layer can maintain a fingerprint-proof property for a long time, and has the advantage that fingerprint-printing durability is also excellent.

The anti-fingerprint photocurable composition of this invention is characterized by containing (A) polyether skeleton containing urethane resin.

(A) polyether skeleton containing urethane resin

The polyether skeleton-containing urethane resin (A) in the present invention is a polyether skeleton-containing urethane resin containing an alkylene oxide having 3 or more carbon atoms, and the average molecular weight of the polyether skeleton portion is a urethane resin having 1000 or more. And when this (A) polyether skeleton containing urethane resin is contained in a photocurable composition, the outstanding anti-fingerprint will be expressed. In addition, the "polyether skeleton containing urethane resin" in this specification is a polymer which has a repeating unit, and what is called an oligomer whose number of this repeating unit is 2-10 is also included.

The polyether skeleton-containing urethane resin containing the alkylene oxide having 3 or more carbon atoms (A) is represented by the following formula

It is resin which has a structure represented by. "X" in the formula represents a skeleton emitter poly, "R" represents H or CH _3. Examples of the polyether skeleton represented by "X" include alkylene oxides having 3 or more carbon atoms. Moreover, as another example of the polyether frame | skeleton represented by "X", the block-type polyether frame | skeleton comprised from a C3 or more alkylene oxide and ethylene oxide is mentioned.

In the polyether skeleton containing urethane resin containing the said (A) alkylene oxide of 3 or more carbon atoms, the average molecular weight of this polyether skeleton part is 1000 or more. However, when (A) polyether skeleton containing urethane resin has two or more polyether skeleton parts in a molecule | numerator, this average molecular weight may be the average molecular weight which totaled these some polyether skeleton parts. That is, the (A) polyether skeleton containing urethane resin contained in the photocurable composition of this invention has the molecular weight of the magnitude | size more than a fixed value, It is characterized by the above-mentioned.

In one embodiment of the present invention, (A) the polyether skeleton-containing urethane resin can be prepared by addition reaction of a polyether polyol containing (a) isocyanate and (b) alkylene oxide having 3 or more carbon atoms. have.

(A) The (a) isocyanate used for preparation of a polyether skeleton containing urethane resin may be monoisocyanate which has one NCO group in the molecule | numerator, and has 2 or more NCO groups in the molecule | numerator It may also be polyisocyanate.

As a specific example of monoisocyanate, for example,

Methyl isocyanate, ethyl isocyanate, propyl isocyanate, isopropenyl isocyanate, phenyl isocyanate, tolyl isocyanate, naphthyl isocyanate, etc. are mentioned. In addition, (meth) acryloyl isocyanate, (meth) acryloyloxyethyl isocyanate, 1,1-bis (acryloyloxymethyl) ethyl isocyanate, dimethylmeth-isopro Unsaturated bond containing isocyanates, such as penylbenzyl isocyanate, can also be used.

As a specific example of the polyisocyanate, for example,

Aromatic diisocyanates such as tolylenediisocyanate (TDI), diphenylmethanediisocyanate (MDI), p-phenylenediisocyanate, and naphthalenediisocyanate;

Aliphatic diisocyanates having 3 to 12 carbon atoms, such as hexamethylene diisocyanate (HMDI), 2,2,4-trimethylhexanediisocyanate, and lysine diisocyanate;

1,4-cyclohexanediisocyanate (CDI), isophoronediisocyanate (IPDI), 4,4'-dicyclohexyl methanediisocyanate (hydrogenated MDI), methylcyclohex Cedar isocyanate, isopropylidenedicyclohexyl-4,4'-diisocyanate, and 1,3-diisocyanate methylcyclohexane (hydrogenated XDI), hydrogenated TDI, 2,5- Or alicyclic diisocyanates having 5 to 18 carbon atoms such as 2,6-bis (isocyanatemethyl) -bicyclo [2.2.1] heptane (also called norbornene isocyanate);

Aliphatic diisocyanates having an aromatic ring such as xylenediisocyanate (XDI) and tetramethylxylenediisocyanate (TMXDI); And

Modified products of these diisocyanates (for example, urethane, carbodiimide, uretdione, uretimine, biuret (dimer), isocyanurate (trimer), etc.);

These may be used independently or may use 2 or more types together.

In this invention, it is preferable to use (a ') polyisocyanate as (a) isocyanate. By preparing the polyether skeleton-containing urethane resin (A ') using polyisocyanate (a'), it is possible to prepare a urethane resin having both a polyether skeleton and a photopolymerizable group, or a poly polymer having a higher degree of polymerization. It is possible to obtain an ether skeleton-containing urethane resin, whereby more excellent anti-fingerprint can be obtained. In addition, in this specification, "(a) isocyanate" shall include both monoisocyanate and polyisocyanate.

The polyether polyol containing the alkylene oxide of (b) carbon number 3 or more used for preparation of (A) polyether skeleton containing urethane resin is a polyhydric alcohol which has a polyether skeleton. And this (b) polyether polyol is provided on condition that a C3 or more alkylene oxide is contained in a polyether skeleton. That is, polyethyleneglycol is not contained in the polyether polyol containing (b) alkylene oxide of 3 or more carbon atoms in this specification. Examples of the "alkylene oxide having 3 or more carbon atoms" include propylene oxide represented by -O-CH ₂ -CH (CH ₃ )-, tetramethylene oxide represented by -O- (CH ₂ ) _4- , and -O-. _{CH 2 -CH (CH 2 C1)} - there may be mentioned 3-chloro-propylene oxide, etc., an alkylene oxide having a carbon number of 3-4, such as represented by. It is more preferable that it is a propylene oxide, and, as for this "alkylene oxide of 3 or more carbon atoms," it is more preferable that it is isopropylene oxide.

The polyether skeleton containing urethane resin (A) used by this invention has an average molecular weight of 1000 or more of a polyether skeleton part. That is, in preparation of (A) polyether skeleton containing urethane resin, it is prepared using the polyether polyol containing the alkylene oxide of (b) carbon number 3 or more whose average molecular weight is 1000 or more. By preparing the (A) polyether skeleton containing urethane resin using the (b) polyether polyol whose average molecular weight is 1000 or more, affinity with respect to a lipid component improves and thereby excellent fingerprinting property is obtained. On the other hand, when the average molecular weight of (b) polyether polyol becomes too large, since urethane bond concentration falls, it is unpreferable. (b) It is preferable that the average molecular weight of a polyether polyol is 3000 or less from a urethane bond concentration or workability at the time of compounding and coating. On the other hand, in preparation of (A) polyether skeleton containing urethane resin, when using (b) polyether polyol for the purpose of introduce | transducing a polyether skeleton represented by the said formula in the resin, it is said here The average molecular weight of a polyether skeleton part means the sum total of the average molecular weights of the "XR" part in some polyether polyol skeleton contained in the resin.

The polyether polyol containing (b) an alkylene oxide having 3 or more carbon atoms (B) used for preparing the polyether skeleton-containing urethane resin preferably has an HLB value of less than 6 in the polyol skeleton portion measured by the Davis method. It is more preferable that it is less than five. Moreover, it is preferable that the lower limit of an HLB value is -2. The HLB value is a physical property value indicating the degree of hydrophilicity and lipophilicity. As a typical calculation method of an HLB value, the Griffin method and the Davis method are mentioned. In this specification, the HLB value calculated by the Davis method is used as the HLB value of the polyol skeleton portion. (A) Poly (A) obtained by HLB value of polyol skeleton part of polyether polyol containing alkylene oxide of 3 or more carbon atoms used for preparation of polyether skeleton containing urethane resin (less than 6) The affinity with respect to the lipid component of the tere skeleton-containing urethane resin is improved, whereby excellent anti-fingerprint is obtained.

The Davis method which is one of the calculation methods of the HLB value of a polyol frame | skeleton part is a method of calculating from the following formula using the integer (base number) peculiar to each functional group.

HLB value of polyol backbone part = 7 + (total number of bases of hydrophilic group) + (total number of bases of lipophilic group)

(A) A polyether polyol containing an alkylene oxide having 3 or more carbon atoms for use in preparing a polyether skeleton-containing urethane resin includes a polyether polyol having a repeating number of 12 to 52 alkylene oxides having 3 or more carbon atoms. It is preferable to use, and it is more preferable to use the polyether polyol whose repeating number is 15-35. By using the polyether polyol which has the said repeating number, affinity with respect to a lipid component improves and more excellent fingerprinting property can be obtained.

In addition, the (b) polyether polyol containing an alkylene oxide having 3 or more carbon atoms may be a polyhydric alcohol containing an alkylene oxide unit having 3 or more carbon atoms. That is, (b) polyethylene oxide (EO) -polypropylene oxide (PO) which is a polyether polyol which is a polyhydric alcohol further containing an alkylene oxide unit and ethylene oxide unit of 3 or more carbon atoms in addition to polypropylene glycol etc. -Block polymers, specifically EO-PO-EO glycol (terminal EO glycol) and PO-EO-PO glycol (terminal PO glycol), etc. (A) Polyether skeleton containing urethane resin It can be used for preparation. (b) When using the above-mentioned polyethylene oxide polypropylene oxide block polymer as a polyether polyol, it is preferable that the repeating number of polypropylene oxide is 12-52. In addition, it is preferable that EO% in a polyethylene oxide polypropylene oxide block polymer is 40% or less.

In the preparation of the (A) polyether skeleton-containing urethane resin of the present invention, the polyether polyol containing (a) isocyanate and (b) alkylene oxide having 3 or more carbon atoms has a free NCO group. It is used in the molar equivalent ratio which reacts all the OH groups which the polyether polyol containing (b) the alkylene oxide of (b) carbon number 3 or more which (a) isocyanate has so that it may remain in a state which does not remain. (A) When preparing only polyether polyol containing (a) isocyanate and (b) alkylene oxide of C3 or more in preparation of a polyether skeleton containing urethane resin, (a) isocyanate It is preferable to polymerize 99-50 weight% of polyether polyol containing 1-50 weight% and (b) alkylene oxide of 3 or more carbon atoms.

(A) In another form of preparation of a polyether skeleton containing urethane resin, In addition to the said isocyanate component and a polyether polyol component, you may use a (c) hydroxyl group and a photopolymerizable group containing monomer further. . In the preparation of the (A) polyether skeleton-containing urethane resin, the resulting (A) polyether skeleton-containing urethane resin has a photopolymerizable group by using the (c) hydroxyl group and the photopolymerizable group-containing monomer. The anti-fingerprint photocurable composition which is more excellent in anti-fingerprint durability is obtained.

The polyether skeleton-containing urethane resin (A) having such a photopolymerizable group includes (a ') polyisocyanate, (b) a polyether polyol containing an alkylene oxide having 3 or more carbon atoms, and (c) hydroxide It can obtain by addition-reacting a real group and a photopolymerizable group containing monomer. However, the polyether skeleton containing urethane resin obtained in this way is

[Wherein X represents a polyether skeleton and R represents H or CH ₃ ]

It is conditional to have a structure represented by Namely, addition reaction of three components of (a ') polyisocyanate, (b) polyether polyol containing alkylene oxide having 3 or more carbon atoms, and (c) hydroxyl group and photopolymerizable group-containing monomer In this case, it is necessary that (a ') polyisocyanate and (b) alkylene oxide having 3 or more carbon atoms react with addition.

(c) The hydroxyl group and the photopolymerizable group-containing monomer may be a monofunctional photopolymerizable monomer having one photopolymerizable group, or may be a multifunctional photopolymerizable monomer having two or more photopolymerizable groups. Here, an unsaturated double bond group etc. are mentioned as a photopolymerizable group. As a monofunctional photopolymerizable monomer, For example, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, 2-hydroxy-3- phenoxypropyl (meth) acryl The rate etc. are mentioned. As the polyfunctional photopolymerizable monomer, for example, glycerin Linda (meth) acrylate, pentaerythritol tri (meth) acrylate, ditrimethylol propane tri (meth) acrylate, dipentaerythritol penta (meth) acrylate And sorbitol penta (meth) acrylate.

(A) When preparing a polyether skeleton containing urethane resin, (a) When using a hydroxyl group and a photopolymerizable group containing monomer, (a ') polyisocyanate is used as an isocyanate. By preparing (A) polyether skeleton containing urethane resin using (a ') polyisocyanate, preparation of the urethane resin which has both a polyether skeleton and a photopolymerizable group is attained. By using the (A) polyether skeleton containing urethane resin obtained in this way, the anti-fingerprint photocurable composition excellent in anti-fingerprint and anti-fingerprint durability can be obtained. In the anti-fingerprint photocurable composition of the present invention, (a ') polyisocyanate, (b) a polyether polyol containing an alkylene oxide having 3 or more carbon atoms, and (c) a hydroxyl group and a photopolymerizable group-containing monomer It is more preferable to use the (A) polyether skeleton containing urethane resin whose average molecular weight of the polyether skeleton part obtained by addition reaction is 1000 or more from a viewpoint of anti-fingerprint, anti-fingerprint durability, surface hardness, etc.

(A) Preparation of polyether skeleton-containing urethane resin, (a ') polyisocyanate, (b) polyether polyol containing alkylene oxide having 3 or more carbon atoms, (c) hydroxyl group and photopolymerization The group-containing monomer is a polyether polyol containing an alkylene oxide having (b) an alkylene oxide having 3 or more carbon atoms (b) so that the NCO group in the glass does not remain, that is, (a ') polyisocyanate; ) It is used in the molar equivalent ratio which reacts with both the OH group which a hydroxyl group and a photopolymerizable group containing monomer have. In this case, 1 to 40% by weight of (a ') polyisocyanate, (b) 94 to 30% by weight of polyether polyol containing an alkylene oxide having 3 or more carbon atoms, and (c) containing a hydroxyl group and a photopolymerizable group It is preferable to polymerize 5-30 weight% of monomers.

As another form of the anti-fingerprint photocurable composition of this invention, As an anti-fingerprint photocurable composition containing (A) polyether skeleton containing urethane resin, (B) photopolymerizable polyfunctional compound, and (C) photoinitiator, The (A) polyether skeleton-containing urethane resin is a polyether skeleton-containing urethane resin containing an alkylene oxide having 3 or more carbon atoms, and (a ') polyisocyanate and (b) an alkylene oxide having 3 or more carbon atoms. The anti-fingerprint photocurable composition prepared by addition-reacting the polyether polyol to contain is mentioned. In this case, it is preferable that (b) HLB value (Davis method) of the polyol skeleton part of the polyether polyol containing a C3 or more alkylene oxide is less than six.

This (A) polyether skeleton containing urethane resin contains the polyether skeleton prepared by addition-reacting the polyether polyol containing (a ') polyisocyanate and (b) alkylene oxide of 3 or more carbon atoms. Urethane resin. And the average molecular weight of the polyether polyol containing the alkylene oxide of (b) carbon number 3 or more used for preparation of this (A) polyether skeleton containing urethane resin may be less than 1000. In this (A) polyether skeleton containing urethane resin, (a ') polyisocyanate is used and (c) it is prepared without using a hydroxyl group and a photopolymerizable group containing monomer. Therefore, each of two or more (b) polyether polyols reacts with a plurality of isocyanate groups possessed by the (a ') polyisocyanate, thereby (b) the average molecular weight of the polyether polyol Even if it is less than 1000, the molecular weight of the resulting (A) polyether skeleton-containing urethane resin is large enough to exhibit fingerprint resistance, for example, the sum of the average molecular weights of the polyether skeleton moieties contained in a plurality of molecules is 1000 or more. Because it becomes. In this case, it is preferable that (B) HLB value (Davis method) of one skeletal part of the polyol of a polyether polyol is less than six. Moreover, it is more preferable that the average molecular weight of the polyether polyol containing (b) alkylene oxide of 3 or more carbon atoms is 700 or more.

In addition, the reason why excellent anti-fingerprint is obtained by including the said polyether skeleton containing urethane resin is not restrict | limited to the theory, but the hydrophobic C3 or more alkylene oxide and the hydrophilic urethane bond part are contained in a molecule | numerator of the coating layer obtained It is considered that the affinity for the lipid component has been improved, thereby improving the fingerprinting.

(B) photopolymerizable multifunctional compound

The anti-fingerprint photocurable composition of this invention contains (A) polyether skeleton containing urethane resin, It is characterized by the above-mentioned. The so-called coating film forming component can be used without particular limitation as long as it is a photocurable component. In such an anti-fingerprint photocurable composition, it is preferable that the (B) photopolymerizable polyfunctional compound is included. The photopolymerizable multifunctional compound (B) acts as a coating film forming component. And by containing (B) a photopolymerizable polyfunctional compound, the photocurability of an anti-fingerprint photocurable composition improves and the mechanical strength of the coating layer obtained becomes high. The photopolymerizable polyfunctional compound (B) is a compound having two or more photopolymerizable groups in one molecule. (B) As a photopolymerizable polyfunctional compound, the compound which has two or more (meth) acryloyl groups in a molecule | numerator can be used. As the (B) photopolymerizable polyfunctional compound, a compound having three or more (meth) acryloyl groups is preferable. Moreover, as a (B) photopolymerizable polyfunctional compound, if it is a compound which has two or more (meth) acryloyl groups, a monomer may be oligomer.

As a monomer, Alkylene glycol di (meth) acrylates, such as ethylene glycol di (meth) acrylate and a propylene glycol di (meth) acrylate; Low diethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate Molecular weight polyalkylene glycol di (meth) acrylate or alkylene oxide modified compounds thereof; Trimethylolpropanetri (meth) acrylate, pentaerythritoldi or tri or tetra (meth) acrylate, ditrimethylolpropanetetra (meth) acrylate, dipentaerythritolpenta or hexa (meth) acrylic Polyol poly (meth) acrylates or alkylene oxide modified compounds thereof such as late; Di or tri (meth) acrylate of an isocyanuric acid alkylene oxide modified body, etc. are mentioned.

As an oligomer, oligomers, such as polyester (meth) acrylate, epoxy (meth) acrylate, and acryl (meth) acrylate, are mentioned. Moreover, it is preferable that these oligomers which can be used as a photopolymerizable polyfunctional compound (B) are 300-5,000, and, as for these oligomers, it is more preferable that it is 500-3,000. If it is larger than 5,000, it becomes a high viscosity and there exists a possibility that handling may become difficult.

These (B) photopolymerizable polyfunctional compounds may be used individually by 1 type, and may use 2 or more types together.

(B) It is preferable to use the monomer which has three or more photopolymerizable groups in 1 molecule as a photopolymerizable polyfunctional compound. By using such a monomer, the mechanical strength of the coating layer obtained can be raised more. As a preferable (B) photopolymerizable polyfunctional compound, a pentaerythritol triacrylate, a trimethylol propane EO modified triacrylate, dipentaerythritol pentaacrylate, a dipentaerythritol hexaacrylate, etc. are mentioned, for example. .

(B) It is preferable to use about 50-99.8 weight% (solid content weight ratio) with respect to the solid content weight of a photopolymerizable polyfunctional compound. When the amount of the (B) photopolymerizable polyfunctional compound is less than 50% by weight, there is a possibility that the physical strength such as bioscent resistance and surface hardness of the surface may be inferior.

(C) photopolymerization initiator

It is preferable that the anti-fingerprint photocurable composition of this invention contains the (C) photoinitiator. By the presence of the (C) photopolymerization initiator, the polymerizability of the anti-fingerprint photocurable composition to active energy ray irradiation is improved. As an example of (C) photoinitiator, an alkylphenone system photoinitiator, an acylphosphine oxide type photoinitiator, a titanocene type photoinitiator, an oxime ester polymerization initiator, etc. are mentioned, for example. Examples of the alkylphenone-based photopolymerization initiators include 2,2-dimethoxy-1,2-diphenylethan-1-one, 1-hydroxycyclohexyl-phenyl-ketone, and 2-hydroxy-2-methyl-1 -Phenyl-propane-1-one, 1- [4- (2-hydroxyethoxy) -phenyl] -2-hydroxy-2-methyl-1-propane-1-one, 2-hydroxy- 1- {4- [4- (2-hydroxy-2-methyl-propionyl) -benzyl] phenyl} -2-methyl-propane-1-one, 2-methyl-1- (4-methylthio Phenyl) -2-morpholinopropane-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,2- (dimethylamino) -2- [ (4-methylphenyl) methyl] -1- [4- (4-morpholinyl) phenyl] -1-butanone, etc. are mentioned. As an acyl phosphine oxide type photoinitiator, 2,4,6- trimethyl benzoyl- diphenyl- phosphine oxide, bis (2, 4, 6- trimethyl benzoyl)-phenylphosphine oxide, etc. are mentioned, for example. As a titanocene type photoinitiator, it is bis ((eta) 5-2, 4- cyclopentadien- 1-yl) -bis (2, 6- difluoro-3- (1H-pyrrol- 1-yl) -phenyl, for example. Titanium etc. are mentioned. As an oxime ester-type polymerization initiator, For example, 1.2-Octane ion, 1- [4- (phenylthio)-, 2- (O- benzoyl oxime)], ethanone, 1- [9-ethyl-6- (2-methylbenzoyl) -9H-carbazol-3-yl]-, 1- (O-acetyloxime), oxyphenylacetic acid, 2- [2-oxo-2-phenylacetoxyethoxy] ethyl ester, 2 -(2-hydroxyethoxy) ethyl ester, etc. are mentioned. It is also possible to use a hydrogen withdrawing initiator such as benzophenone, 2,4,6-trimethylbenzophenone, methyl benzoyl benzoate, 2,4-diethyl thioxanthone, 2-ethylanthraquinone and camphorquinone. These photoinitiators may be used individually by 1 type, and may use 2 or more types together.

In the said (C) photoinitiator, 2-hydroxy- 2-methyl- 1-phenyl- propane- 1-one, 1-hydroxy cyclohexyl- phenyl- ketone, 2-methyl- 1- (4-methyl Thiophenyl) -2-morpholinopropane-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1 and 2,2-dimethoxy-1 , 2-diphenyl ethane-1-one and the like are more preferably used.

(C) It is preferable to use about 0.1-20 weight% (solid content weight ratio) with respect to solid content weight of a photo-curing composition for a photoinitiator. When the amount of (C) photoinitiator is out of the said range, photocurability becomes inadequate and there exists a possibility that physical strength may be inferior.

Other ingredients

The anti-fingerprint photocurable composition of this invention can mix | blend the compound which has one ethylenically unsaturated group as needed. By including such a compound, the adhesiveness, hardness, and flexibility of the coating layer obtained can be adjusted. As a compound which has one ethylenically unsaturated group, (meth) acryl which has cyclic structures, such as cyclohexyl (meth) acrylate, isoboroyl (meth) acrylate, and tetrahydrofurfuryl (meth) acrylate, Late compound; Hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate and 2-hydroxypropyl (meth) acrylate; (Meth) acrylate compounds of alkoxy oxide adducts of phenols such as phenoxyethyl (meth) acrylate; Articles such as ethylene glycol mono (meth) acrylate, methoxyethylene glycol mono (meth) acrylate, tetraethylene glycol mono (meth) acrylate, tripropylene glycol mono (meth) acrylate Mono (meth) acrylate of lycol; Vinyl compounds, such as N-vinyl pyridone and N-vinyl caprolactam, etc. are mentioned.

The anti-fingerprint photocurable composition of this invention may contain an inorganic filler as needed. By including the inorganic filler, the bio-imbiability of the coating layer and the film hardness of the surface can be further improved. As an inorganic filler which can be used, microparticles | fine-particles of a metal or a metal oxide are mentioned, for example. As a metal, Si, Ti, Al, Zn, Zr, In, Sn, Sb etc. are mentioned, for example. Specific inorganic fillers include silica, alumina, zirconia, titania and the like. As for these inorganic fillers, it is more preferable that they are about 5-50 nm of average particle diameters. In addition, when using an inorganic filler, it is preferable to use about 0.1-50 weight% with respect to the solid content weight of a fingerprint-curable photocurable composition. When content of an inorganic filler exceeds 50 weight%, there exists a possibility that the film strength of the coating layer obtained may become weak.

The anti-fingerprint photocurable composition of this invention may further contain the organic solvent as a dilution solvent as needed. As a specific example of the solvent used as such an organic solvent, For example, aromatic solvents, such as toluene and xylene; Aliphatic solvents such as hexane, heptane, octane and mineral spirits; Ketone solvents such as methyl ethyl ketone, acetone, methyl isobutyl ketone and cyclohexanone; Diethyl ether, isopropyl ether, tetrahydrofuran, dioxane, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol Ether solvents such as diethyl ether, propylene glycol monomethyl ether, anisole and phentol; Ester solvents such as ethyl acetate, butyl acetate, isopropyl acetate, and ethylene glycol diacetate; Amide solvents such as dimethyl formamide, diethylformamide, dimethyl sulfoxide and N-methylpyrrolidone; Cellosolve solvents such as methyl cellosolve, ethyl cellosolve and butyl cellosolve; Ether ester solvents such as propylene glycol monomethyl ether acetate and propylene glycol monoethyl ether acetate; Alcohol solvents such as methanol, ethanol and propanol; Halogen solvents such as dichloromethane, dichloroethane and chloroform; Etc. can be mentioned. These solvents may be used alone or in combination.

The anti-fingerprint photocurable composition of the present invention, if necessary, additives commonly used such as photopolymerization initiator, antistatic agent, organic filler, polymerization inhibitor, antioxidant, ultraviolet absorber, light stabilizer, antifoaming agent, leveling agent, pigment, etc. It may also include. For example, 4-dimethylamino benzoate ethyl, 4-dimethylamino benzoate isoamyl, dibutylethanolamine, methyldiethanolamine, etc. are mentioned as a photoinitiator which can be used preferably.

Anti-fingerprint photocurable composition

The anti-fingerprint photocurable composition of this invention contains at least (A) polyether skeleton containing urethane resin, (B) photopolymerizable polyfunctional compound, and (C) photoinitiator. And by using the anti-fingerprint photocurable composition of this invention, even if it is a single | mono layer, it is possible to form the coating layer which is very excellent in anti-fingerprint property, and also excellent in bio-imprint resistance, surface film hardness and anti-fingerprint durability.

In addition, the anti-fingerprint photocurable composition of the present invention is photocurable. Therefore, when forming a coating layer, it has the advantage that it does not need to heat-polymerize. Many optical display devices include, for example, a member having a low heat resistance such as a resin film. The anti-fingerprint photocurable composition of this invention has the advantage that a coating layer can be formed favorably also with respect to the optical display apparatus and resin film which comprise such a low heat resistance member.

The anti-fingerprint photocurable composition of this invention can be prepared by mixing the said component. In addition, at the time of preparation of a composition, the organic solvent which can be used for dilution can be used as needed. In addition, the anti-fingerprint photocurable composition of this invention may be diluted, and may be used without dilution.

As a preparation method of an anti-fingerprint photocurable composition, the said (A) polyether skeleton containing urethane resin, (B) photopolymerizable polyfunctional compound, (C) photoinitiator, and the additives, organic solvent, etc. which are needed as needed are mixed, for example. It can prepare by making it.

When the anti-fingerprint photocurable composition of the present invention does not contain a reactive inorganic filler, each component

(A) 0.1-30 weight% of polyether skeleton containing urethane resins,

(B) 50 to 99.9 wt% of a photopolymerizable multifunctional compound, and

(C) 0.1-20 weight% of photoinitiators,

However, it is more preferable that all the weight% of the said component is based on the weight of solid content in a composition, and the total weight of solid content of each component is 100 weight%.

In addition, when the anti-fingerprint photocurable composition of the present invention contains a reactive inorganic filler, each component

(A) 0.1-30 weight% of polyether skeleton containing urethane resins,

(B) 50-99.7% by weight of the photopolymerizable multifunctional compound,

(C) 0.1-20 weight% of photoinitiators, and

0.1-50% by weight reactive inorganic filler

However, it is more preferable that all the weight% of the said component is based on the weight of solid content in a composition, and the total weight of solid content of each component is 100 weight%.

In addition, it is preferable that the anti-fingerprint photocurable composition of this invention does not contain both a silicone type additive and a fluorine type additive. These additives have the effect of improving the water repellency and oil repellency of the coating layer obtained, thereby improving the antifouling property, while the oil and fat component adhering to the coating layer splashes according to the improvement of the water repellency and oil repellency. Because there is a fear.

The anti-fingerprint film can be easily prepared by using the anti-fingerprint photocurable composition of this invention. This anti-fingerprint film has a transparent substrate and a coating layer. This coating layer is a layer formed from the anti-fingerprint photocurable composition, and the anti-fingerprint is exhibited by the presence of this layer.

As a transparent base material used for preparation of an anti-fingerprint film, various transparent plastic films, such as a triacetyl cellulose (TAC) film, a polyethylene terephthalate (PET) film, a diacetyl cellulose film, an acetate butyrate cellulose film, a polyether sulfone film , Polyacrylic resin film, polyurethane resin film, polyester film, polycarbonate film, polysulfone film, polyether film, polymethylpentene film, polyether ketone film, (meth) acrylonitrile film and the like can be used. have. As the transparent substrate, it is preferable to use polyethylene terephthalate. In addition, although the thickness of a transparent base material can be selected timely according to a use, it is generally used about 25-1000 micrometers.

The anti-fingerprint coating layer is formed by applying the anti-fingerprint photocurable composition on a transparent substrate. The method of applying the anti-fingerprint photocurable composition can be selected in a timely manner according to the circumstances of the anti-fingerprint photocurable composition and the coating process, for example, dip coating method, air knife coating method, curtain coating method, roller coating method, wire bar coating method, gravure Coating method, extrusion coating method (this method is a method described in US Pat. No. 2,268,942), or the like.

The anti-fingerprint photocurable composition coated on the transparent substrate is then cured by exposure to active energy radiation, thereby forming a fingerprint-finish coating layer. It is preferable to irradiate here for 0.5 to 240 second using the light of 200-500 nm wavelength.

Further, by coating the anti-fingerprint photocurable composition of the present invention on the surface of the optical display device, a coating layer can be formed on the surface of the optical display device. As an optical display device which can provide a coating layer using the anti-fingerprint photocurable composition of this invention, a liquid crystal display device, a CRT (brown tube) display device, a touch panel display, etc. are mentioned. The coating layer can be formed on the surface of the optical display by applying the anti-fingerprint photocurable composition of the present invention to various transparent plastic films, transparent plastic plates, and glass used on the surfaces of these optical display devices.

As a coating method of an anti-fingerprint photocurable composition, a spin coating method, a dip coating method, the gravure coating method, the spray method, the roller method, the brush coating method, etc. are mentioned, for example. And a suitable coating method can be selected according to the kind of optical display apparatus to coat. In coating of an anti-fingerprint photocurable composition, it is preferable to coat so that the thickness of the coating layer obtained may be 0.1-20 micrometers.

The anti-fingerprint photocurable composition coated on the surface of the optical display device is then cured by exposure to irradiation of active energy rays, thereby forming the anti-fingerprint coating layer. It is preferable to irradiate here for 0.5 to 240 second using the light of the wavelength of 200-500 nm.

EXAMPLE

The present invention will be described in more detail with reference to the following Examples, but the present invention is not limited thereto. "Part" and "%" in an Example are based on a weight basis unless there is particular limitation.

Production Example 1 Preparation of Polyether Skeleton-Containing Urethane Resin (1)

The weight part (a) isocyanate, (b) polyether polyol, (c) hydroxyl group, and photopolymerizable group containing monomer shown in Table 2 were added to the reaction container, and dibutyltin dilaurate was further added as a catalyst. 1000 ppm, 1000 ppm of hydroquinone as a polymerization inhibitor, and methyl isobutyl ketone (MIBK, used in an amount of 40% solids) as a solvent were added, and the mixture was mixed at 80 ° C. for 3 hours while blowing air into a polyether. The skeleton-containing urethane resin (1) was obtained.

[Production example 2-production example 18]

Polyether skeleton containing urethane resins (2)-(18) were obtained by the method similar to the manufacture example 1 except having used the weight part shown by the table for each component shown in Tables 2-4.

[Comparative Production Examples 1-6]

Polyether skeleton containing urethane resin (19)-(24) was obtained by the method similar to the manufacture example 1 except having used each component shown in Table 5 by weight part.

In Table 2-Table 5 above,

IPDI: isophorone diisocyanate,

MDI: diphenylmethane diisocyanate,

HMDI: hexamethylene diisocyanate,

PO: polypropylene glycol skeleton,

EO: polyethylene glycol skeleton,

PTMG: polytetramethylene glycol skeleton,

PETA ^* : A mixture of pentaerythritol triacrylate and pentaerythritol tetraacrylate (mixed weight ratio 60:40)

Indicates.

"Repeated number of (b)" described in Tables 2-5 is a calculated value computed using the said average molecular weight.

The HLB value of the polyol frame | skeleton part of (b) described in Table 2-Table 5 is the value computed using the formula described in this specification by Davis method.

Example 1 Anti-fingerprint Preparation of the photocurable composition (1)

3 parts by weight of the polyether skeleton-containing urethane resin (1) obtained in Production Example 1, 97 parts by weight of a mixture of pentaerythritol triacrylate and pentaerythritol tetraacrylate (mixed weight ratio 60:40) and 2-methyl 7 parts by weight of -1 [4- (methylthio) phenyl] -2-morpholinopropane-1-one was mixed, and MIBK was adjusted so that the non-volatile content was 40% by weight as a solvent. A composition was obtained. The obtained composition was bar-coated with a bar coater (No. 12) on a PET film (thickness 100 µm), heated at 80 ° C for 1 minute so as to have a dry film thickness of 5 µm, and the solvent was removed and dried. Thereafter, a high pressure mercury lamp (120 W / cm) was exposed to an ultraviolet ray of 300 mJ / cm 2 and cured to form a coating layer to obtain a fingerprint-resistant film.

[Examples 2-18 ] Anti-fingerprint Preparation of photocurable composition (2)-(18)

An Example except for using 3 parts by weight of the polyether skeleton-containing urethane resins (2) to (18) obtained from Production Examples 2 to 18 instead of the polyether skeleton-containing urethane resin (1) obtained in Production Example 1. In the same manner as in 1, an anti-fingerprint photocurable composition was obtained. In addition, a coating layer was formed in the same manner as in Example 1 to obtain an anti-fingerprint film.

Comparative Examples 1 to 6 Preparation of Photocurable Compositions

Instead of the polyether skeleton-containing urethane resin (1) obtained from Production Example 1, except that 3 parts by weight of the polyether skeleton-containing urethane resins (19) to (24) obtained from Comparative Production Examples 1 to 6 were used. In the same manner as in Example 1, a photocurable composition was obtained. In addition, a coating layer was formed in the same manner as in Example 1 to obtain a film.

Comparative Example 7

100 parts by weight of a mixture of pentaerythritol triacrylate and pentaerythritol tetraacrylate (mixed weight ratio 60:40) and 2-methyl-1 [4- (methylthio) phenyl] -2-morpholinopropane-1 7 parts by weight of -one was mixed, and MIBK was adjusted so that the nonvolatile fraction was 40% by weight as a solvent to obtain a photocurable composition. Using the obtained composition, a coating layer was formed in the same manner as in Example 1 to obtain a film.

Evaluation of the sample having the obtained coating layer was carried out as described below. In addition, the result obtained by these evaluation methods is shown in the following table | surface.

Measurement of haze (liquidity) and total light transmittance

Using a haze meter (manufactured by Suga Test Co., Ltd.), the diffusion transmittance (T _d (%)) and the total light transmittance (T _t (%)) of the sample were measured, and the haze value was calculated. In addition, the total light transmittance (%) and haze (%) shown in Tables 6-9 are the values measured through the PET film part of thickness 100micrometer used as a base material for preparation of a coating layer.

H: Haze (% litter) (%)

T _d : Diffuse light transmittance (%)

T _t :% total light transmittance

Oleic acid wiping evaluation (fingerprint resistance)

One drop of oleic acid was dropped onto the coating layer of the obtained sample. The wiper was then wiped once, ten, twenty and thirty times. Haze of the sample before the evaluation test and after the evaluation test was measured according to the above, and the Δ haze value was obtained. The obtained haze value is shown in a table | surface. The smaller this Δ haze value is, the better the wiping property of the fat or oil component is, that is, the better the rubbing property.

Evaluation of SW resistance

On the coating layer of the obtained sample, # 0000 steel wool was subjected to 10 round trips, 30 round trips, 50 round trips, 100 round trips and 200 round trips, respectively, under a load of 1 kg / cm ^s . Haze of the sample before the evaluation test and after the evaluation test was measured according to the above, and the Δ haze value was obtained. The obtained haze value is shown in a table | surface. It is said that the smaller the Δ haze value is, the better the surface hardness is and the less likely the scratch is formed on the coating layer.

Adhesion Evaluation

Into the coating layer surface of the obtained sample, 11 scratches and 11 transverse wounds were inserted with cutter knives at intervals of 1 mm to prepare a total of 100 lattice patterns. Subsequently, nichibancello tape (registered trademark) was completely adhered therefrom, peeled at once in the 45 degree direction with respect to the film, and evaluated by the number of lattice patterns remaining completely on the film.

The anti-fingerprint film obtained by the anti-fingerprint curable composition of the example has high total light transmittance and high transparency. In addition, both anti-fingerprint and SW resistance are very excellent. The film of an Example is also excellent in adhesiveness. On the other hand, all of the films according to the comparative examples were inferior in anti-fingerprint properties.

By using the anti-fingerprint photocurable composition of this invention, the coating layer which has the outstanding anti-fingerprint on the surface of an optical display apparatus etc. can be provided more easily. The coating layer obtained by the anti-fingerprint photocurable composition of this invention is excellent also in transparency, and is suitable for use on the surface of optical display apparatuses, etc. The coating layer obtained by the anti-fingerprint photocurable composition of the present invention also has excellent bioglide resistance and film hardness of the surface. In addition, since the anti-fingerprint photocurable composition of the present invention is photocurable, a coating layer having such excellent performance can be more easily formed on the surface of the optical display device. By using the anti-fingerprint photocurable composition of the present invention, there is an industrial advantage that a coating layer having excellent production efficiency and manufacturing cost can be formed. Moreover, this coating layer can maintain a fingerprint-proof property for a long time, and also excellent fingerprint-proof durability.

1 is a schematic cross-sectional view of an anti-fingerprint film of the present invention.

Explanation of symbols for the main parts of the drawings

1: anti-fingerprint film

3: coating layer

5: transparent base material

Claims (12)

(A) A polyether skeleton-containing urethane resin containing an alkylene oxide having 3 or more carbon atoms, wherein the polyether skeleton-containing urethane resin has a structure represented by the following formula, and the average molecular weight of the polyether skeleton portion is 1000 The anti-fingerprint photocurable composition containing the polyether skeleton containing urethane resin which is above (however, when it has two or more polyether skeleton parts in a molecule | numerator, the average molecular weight which totaled these some polyether skeleton parts may be sufficient). Composition. [Formula 1]

[Wherein X represents a polyether skeleton and R represents H or CH ₃ ] The method of claim 1, As an anti-fingerprint photocurable composition containing said (A) polyether skeleton containing urethane resin, (B) photopolymerizable polyfunctional compound, and (C) photoinitiator, Said (A) polyether skeleton containing urethane resin is a polyether skeleton containing urethane resin obtained by addition-reacting (a) isocyanate and (b) polyether polyol containing alkylene oxide of 3 or more carbon atoms. , Anti-fingerprint photocurable composition. The method according to claim 1 or 2, The (A) polyether skeleton-containing urethane resin includes (a ') polyisocyanate, (b) a polyether polyol containing an alkylene oxide having 3 or more carbon atoms, and (c) a hydroxyl group and a photopolymerizable group. A polyether skeleton-containing urethane resin obtained by addition-reacting a containing monomer, provided that the polyether skeleton-containing urethane resin has a structure represented by the following formula. [Formula 2]

[Wherein X represents a polyether skeleton and R represents H or CH ₃ ] The method of claim 2 or 3, The polyether polyol containing (b) an alkylene oxide having 3 or more carbon atoms used for preparing the polyether skeleton-containing urethane resin has an anti-fingerprint photocurable composition having a HLB value (Davis method) of less than 6 in the polyol skeleton portion. Composition. The method according to any one of claims 2 to 4, The anti-fingerprint photocurable composition whose repetition number of the polyether polyol containing (b) alkylene oxide of 3 or more carbon atoms used for preparation of said (A) polyether skeleton containing urethane resin is 12-52. The method of claim 2, Said (A) polyether frame | skeleton containing urethane resin addition-reacts 99-50 weight% of polyether polyol containing (a) 1-50 weight% of isocyanates and (b) alkylene oxide of 3 or more carbon atoms. The anti-fingerprint photocurable composition which is a polyether skeleton containing urethane resin obtained by making it. The method of claim 3, wherein Said (A) polyether skeleton containing urethane resin, (a ') 1-40 weight% of polyisocyanates, (b) 94-30 weight% of polyether polyols containing alkylene oxide of 3 or more carbon atoms, and (c) Anti-fingerprint photocurable composition which is a polyether skeleton containing urethane resin obtained by addition-reacting 5-30 weight% of hydroxyl groups and a photopolymerizable group containing monomer. The method of claim 1, As an anti-fingerprint photocurable composition containing (A) polyether skeleton containing urethane resin, (B) photopolymerizable polyfunctional compound, and (C) photoinitiator, Said (A) polyether skeleton containing urethane resin is a polyether skeleton containing urethane resin containing a C3 or more alkylene oxide, (a ') polyisocyanate and (b) C3 or more alkylene oxide An anti-fingerprint photocurable composition prepared by subjecting a polyether polyol including an addition reaction to be carried out. The method of claim 8, The anti-fingerprint photocurable composition of (b) the HLB value (device method) of the polyol frame | skeleton part of the polyether polyol containing an alkylene oxide of 3 or more carbon atoms is less than 6. The method according to any one of claims 2 to 9, (A) 0.1-30 weight% of polyether skeleton containing urethane resins, (B) 50 to 99.9 wt% of a photopolymerizable multifunctional compound, and (C) 0.1-20 weight% of photoinitiators (However, all of the above components by weight are based on the weight of solids in the composition, and the total weight of solids of each component is 100% by weight). Anti-fingerprint photocurable composition comprising a. As an anti-fingerprint film which has a transparent base material and a coating layer, The said fingerprint layer is an anti-fingerprint film which is a coating layer formed with the anti-fingerprint photocurable composition of any one of Claims 1-10. The optical display device in which the coating layer formed of the anti-fingerprint photocurable composition of any one of Claims 1-10 is used for the outermost layer of a display.

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