JP2012049152A - Photocurable composition and method for producing molded product having surface micropattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photocurable composition which forms a cured product having excellent environmental properties and mold release performance and has excellent compatibility with fluorosurfactants and other components, and also to provide a production method thereof by which a molded product, having a surface micropattern precisely transferred from an inverted pattern of a mold and a uniform surface composition, is produced.SOLUTION: A photocurable composition for imprinting comprises a compound having one or more acryloyloxy (or methacryloyloxy) groups as a primary component, and contains the following polymer (D). The polymer (D) contains 20 to 45 mass% of CH=C(R)-C(O)O-Q-Runits, 20 to 65 mass% of CH=C(R)-C(O)O-(CHCH(R)O)-H units (number-average molecular weight of 350 or less), 5 to 40 mass% of CH=C(R)-C(O)O-Runits, and has a mass-average molecular weight of 1,000 to 5,000, where R, R, and Rare hydrogen atoms or methyl groups, Q is a bivalent linking group or the like, Ris a C1-6 polyfluoroalkyl group or the like, Ris a hydrogen atom or the like, n is any of the numbers 3-6, and Ris a C2-15 aliphatic hydrocarbon group.

Description

  The present invention relates to a photocurable composition and a method for producing a molded product having a fine pattern on the surface.

  As a method for forming a fine pattern in a short time in the production of optical members, recording media, semiconductor devices, etc., a mold having a reverse pattern of the fine pattern on its surface is pressed against the photocurable composition placed on the surface of the substrate. In addition, there is known a method (nanoimprint method) in which the photocurable composition is irradiated with light to cure the photocurable composition to form a fine pattern on the surface of the substrate (see Patent Documents 1 and 2). ).

  However, in this method, since the cured product of the photocurable composition adheres to the mold, it is difficult to separate the cured product and the mold. Therefore, it is necessary to apply a release agent to the surface of the mold. However, it is difficult to accurately transfer the reversal pattern of the mold due to the film thickness of the release agent itself, uneven application of the release agent, and the like.

The following are proposed as a photocurable composition capable of forming a cured product having good releasability.
(1) An active energy ray-curable composition containing a fluorine surfactant having a fluorinated alkyl group and a polar group in the molecule (Patent Document 3).
(2) A photocurable composition containing a fluorine-containing monomer, a monomer not containing fluorine, a fluorine surfactant or a fluorine-containing polymer, and a polymerization initiator (Patent Document 4).

However, the photocurable compositions (1) and (2) have the following problems.
(I) The fluorosurfactant often uses a compound derived from perfluorooctane sulfonic acid as a raw material or contains a trace amount in order to improve releasability. Perfluorooctane sulfonic acid-derived compounds have been pointed out as environmental persistence and bioaccumulation, and their use is in the direction of being regulated.
(Ii) The case where the fluorosurfactant has a poly (oxyethylene) structure of a terminal methyl group, and the mold has a mold having a complicated fine pattern, a mold having a dense fine pattern, a region of a fine pattern In the case of a mold having a large area, the mold release property between the mold and the cured product of the photocurable composition is insufficient, or the fine pattern of the mold is not properly filled with the photocurable composition. .
(Iii) If the molecular weight and composition of the fluorosurfactant are not controlled, the composition of the surface of the cured product becomes non-uniform and the surface state of the cured product varies, so that the weather resistance when used as a permanent film Decreases, the in-plane variation of the etching rate occurs when used as a resist, or the transfer target partly adheres when used as a replica mold.

US Pat. No. 6,696,220 JP 2004-071934 A JP 2001-106710 A International Publication No. 2006/114958 Pamphlet

  The present invention can form a cured product excellent in releasability without using a fluorosurfactant made from a compound derived from perfluorooctane sulfonic acid, and is compatible with the fluorosurfactant and other components. An excellent photocurable composition and a method capable of producing a molded product having a fine pattern on the surface of which a reversal pattern of the mold is accurately transferred and a uniform surface composition.

The photocurable composition for imprints of the present invention is the following photocurable composition for imprints.
A photocurable composition for imprints comprising as a main component a compound having at least one acryloyloxy group or methacryloyloxy group (hereinafter also referred to as compound (X)), the following compound (A) and the following compound (B ) And the following compound (C), the unit of the following compound (A) relative to the sum of the following compound (A) unit, the following compound (B) unit and the following compound (C) unit. The proportion is 20 to 45 mass%, the proportion of the unit of the following compound (B) is 20 to 65 mass%, the proportion of the unit of the following compound (C) is 5 to 40 mass%, and the mass average molecular weight is 1,000 to 1,000. The photocurable composition for imprints containing the polymer (D) which is 5000.
Compound (A): A compound represented by the following formula (1).
^{_{CH 2 = C (R 11)}} -C (O) O-Q-R f ··· (1).
Where R ¹¹ is a hydrogen atom or a methyl group, Q is a single bond or a divalent linking group containing no fluorine atom, and R ^f is a carbon atom having 1 to 6 carbon atoms in the main chain. It is a polyfluoroalkyl group which may have an etheric oxygen atom in between.
Compound (B): A compound represented by the following formula (2) and having a number average molecular weight of 350 or less.
_{^{CH 2 = C (R 21)}} -C (O) O- (CH 2 CH (R 22) O) n -H ··· (2).
However, R < ²¹ > is a hydrogen atom or a methyl group, R < ²² > is a hydrogen atom or a C1-C4 alkyl group, n is 3-6, Compound (B) in 1 molecule The n R ^{22 s} may be the same or different.
Compound (C): Compound represented by the following formula (3).
^{_{CH 2 = C (R 31)}} -C (O) O-R 32 ··· (3).
However, R ³¹ is a hydrogen atom or a methyl group, and R ³² is a monovalent aliphatic hydrocarbon group having 2 to 15 carbon atoms.

The photocurable composition for imprints of the present invention is a composition containing the compound (X) as a main component, and usually contains a photopolymerization initiator (G). The compound (X) includes a compound having one acryloyloxy group or methacryloyloxy group (hereinafter also referred to as compound (Y)), and a compound (H) having two or more acryloyloxy groups or methacryloyloxy groups. It consists of 1 or more types chosen from the group which consists of.
In the present invention, the compound (Y) is classified into two types: a compound (E) having a fluorine atom and a compound (F) having no fluorine atom. When the photocurable composition of this invention contains a compound (Y), this compound (Y) consists of 1 or more types chosen from the group which consists of a compound (E) and a compound (F). The photocurable composition of the present invention preferably contains a compound (Y). That is, it is preferable that at least a part of the compound (X) includes one or more selected from the group consisting of the compound (E) and the compound (F). More preferably, both the compound (E) and the compound (F) are included.
Furthermore, it is preferable that the photocurable composition of this invention contains a compound (H).
In the photocurable composition of the present invention, the content ratio of the polymer (D) is preferably 0.01 to 5% by mass with respect to the photocurable composition. Moreover, it is preferable that the content rate of a photoinitiator (G) is 1-12 mass% with respect to a photocurable composition.
The photocurable composition of the present invention contains at least one of the compound (E), the compound (F) and the compound (H), and the content ratio of each compound to the photocurable composition is as follows. It is preferable.
Compound (E): 5 to 40% by mass
Compound (F): 10 to 55% by mass
Compound (H): 10 to 75% by mass

  In the present invention, the photocurable composition means a composition containing no solvent. The photocuring composition is a composition that does not substantially contain a solvent. However, the composition before curing may contain a solvent. That is, the photocurable composition for imprints of the present invention can be subjected to an operation before curing in a solution state containing a solvent in order to handle application and the like. The proportion of each component means the proportion of each component based on a photocurable composition not containing a solvent (or in the case of a composition containing a solvent, the total amount of components excluding the solvent). In the same sense, the viscosity at 25 ° C. of the photocurable composition for imprints of the present invention is preferably 3 to 200 mPa · s.

  The method for producing a molded article having a fine pattern on the surface thereof according to the present invention comprises contacting the photocurable composition for imprints of the present invention with the surface having the reverse pattern of the mold having the reverse pattern of the fine pattern on the surface. And a step of irradiating the photocurable composition with light in a state where the photocurable composition is brought into contact with the surface of the mold to cure the photocurable composition to obtain a cured product; Separating the mold from the cured product to obtain a molded body having a fine pattern on the surface.

  The method for producing a molded article having a fine pattern on the surface thereof according to the present invention includes a step of arranging the photocurable composition for imprints of the present invention on the surface of a substrate, and a mold having an inverted pattern of the fine pattern on the surface. Pressing the photocurable composition so that the reversal pattern of the mold is in contact with the photocurable composition, and pressing the mold against the photocurable composition, the photocurable composition A step of irradiating a product with light to cure the photocurable composition to obtain a cured product; and a molded product having a fine pattern on the surface by separating the mold or the substrate and the mold from the cured product And a step of obtaining.

  In the method for producing a molded article having a fine pattern on the surface of the present invention, the photocurable composition for imprints of the present invention is disposed on the surface having the reverse pattern of the mold having the reverse pattern of the fine pattern on the surface. A step of pressing the substrate against the photocurable composition, and irradiating the photocurable composition with light while pressing the substrate against the photocurable composition. Curing the product to obtain a cured product, and separating the mold or the substrate and the mold from the cured product to obtain a molded body having a fine pattern on the surface. .

  The method for producing a molded body having a fine pattern on the surface thereof according to the present invention is such that a substrate and a mold having a reverse pattern of the fine pattern on the surface are brought close to each other so that the reverse pattern of the mold is on the substrate side. The step of contacting, the step of filling the photocurable composition for imprints of the present invention between the substrate and the mold, and the photocurable composition in a state in which the substrate and the mold approach or contact each other. A step of irradiating the composition with light to cure the photocurable composition to obtain a cured product, and forming the mold or the substrate and the mold from the cured product, and forming a fine pattern on the surface Obtaining a body.

  The fine pattern may be a resist pattern, and the molded body having the fine pattern on the surface may be an imprint replica mold or an electroforming replica mold.

The photocurable composition of the present invention can form a cured product excellent in releasability without using a fluorosurfactant made of a compound derived from perfluorooctane sulfonic acid as a raw material. Excellent compatibility with other ingredients.
According to the method for producing a molded body having a fine pattern on the surface of the present invention, it is possible to produce a molded body having a fine pattern on which the reverse pattern of the mold is precisely transferred on the surface and having a uniform surface composition.

It is sectional drawing which shows an example of the manufacturing method of the molded object which has a fine pattern on the surface. It is sectional drawing which shows the other example of the manufacturing method of the molded object which has a fine pattern on the surface. It is sectional drawing which shows an example of the molded object which has a fine pattern on the surface. It is sectional drawing which shows the other example of the molded object which has a fine pattern on the surface.

  In the present specification, the (meth) acryloyloxy group means an acryloyloxy group or a methacryloyloxy group. Moreover, in this specification, (meth) acrylate means an acrylate or a methacrylate.

<Photocurable composition>
The photocurable composition for imprints of the present invention (hereinafter referred to as a photocurable composition) is mainly composed of a compound having at least one acryloyloxy group or methacryloyloxy group (that is, compound (X)). It is a composition and contains a photoinitiator (G) normally in order to provide photocurability. Moreover, the photocurable composition of this invention contains a polymer (D) as an essential component. Furthermore, components such as additive (I) described later may be included as necessary. As mentioned above, the photocurable composition of the present invention means a composition containing no solvent. However, a solution containing a solvent that is not substantially contained in the composition during photocuring (that is, a solution of the photocurable composition) can be used for the production of the molded body.

Compound (X) is a compound having one or more (meth) acryloyloxy groups, and in the present invention, a compound having one (meth) acryloyloxy group (that is, compound (Y)) and (meth) acryloyl The compound is divided into compounds having two or more oxy groups (namely, compound (H)). Compound (Y) is divided into compound (E) and compound (F).
The compound (X) is more preferably a compound having an acryloyloxy group because photopolymerization is easy. That is, the compound (E) and the compound (F) are more preferably compounds having one acryloyloxy group, and the compound (H) is more preferably all (meth) acryloyloxy groups are acryloyloxy groups. .
In the photocurable composition (composition not containing a solvent) of the present invention, compound (X) is an essential and main component. The photocurable composition of the present invention contains at least one selected from the group consisting of the compound (E), the compound (F) and the compound (H), and the total amount thereof is the main component of the photocurable composition. (Component exceeding 50% by mass). In the photocurable composition of the present invention, the content ratio of the compound (X) to the photocurable composition (composition not containing a solvent) is preferably 60% by mass or more, and more preferably 80% by mass or more.

  The compound (X) contained in the photocurable composition of the present invention may consist of only one selected from the compound (E), the compound (F) and the compound (H), and in that case the compound (X ) Is preferably compound (H). More preferably, the compound (X) contained in the photocurable composition comprises at least one of the compound (E) and the compound (F) and the compound (H). Most preferably, the compound (X) is composed of the compound (E), the compound (F) and the compound (H). In addition, the photocurable composition of this invention may contain photopolymerizable compounds other than compound (X) as needed.

  The viscosity at 25 ° C. of the photocurable composition of the present invention (a composition not containing a solvent) is preferably 3 to 200 mPa · s, more preferably 5 to 100 mPa · s. If the viscosity of the photocurable composition is within this range, the photocurable composition can be used without performing a special operation (for example, an operation of heating the photocurable composition to a high temperature to make the viscosity low). It is possible to easily make contact with the surface having the reversal pattern of the mold.

The photocurable composition of the present invention is a composition that does not substantially contain a solvent at the time of curing, and further contains substantially no solvent when handling the photocurable composition such as coating before curing. It is preferable that it is a thing. If the photocurable composition does not substantially contain a solvent, without performing a special operation excluding light irradiation (for example, an operation of removing the solvent by heating the photocurable composition to a high temperature, etc.) The photocurable composition can be easily cured.
The solvent is a compound having the ability to dissolve any of the polymer (D), the compound (E), the compound (F), the photopolymerization initiator (G), the compound (H), and the additive, Is a compound having a boiling point of 160 ° C. or lower.
The photocurable composition substantially free of a solvent means that the amount of the solvent contained in the photocurable composition is 1% by mass or less based on the photocurable composition. In the present invention, the solvent used in preparing the photocurable composition may be included as the residual solvent, but the residual solvent is preferably removed as much as possible, and the content of the solvent such as the residual solvent Is more preferably 0.7% by mass or less based on the photocurable composition.

<< Polymer (D) >>
The polymer (D) is a copolymer of the compound (A), the compound (B), and the compound (C), and includes a unit of the compound (A), a unit of the compound (B), and a unit of the compound (C). The ratio of the unit of the compound (A) to the total is 20 to 45% by mass, the ratio of the unit of the compound (B) is 20 to 65% by mass, the ratio of the unit of the compound (C) is 5 to 40% by mass, And it is a polymer whose mass mean molecular weight is 1000-5000.
Compound (A): A compound represented by the following formula (1).
^{_{CH 2 = C (R 11)}} -C (O) O-Q-R f ··· (1).

R ¹¹ is a hydrogen atom or a methyl group.
Q is a divalent linking group containing no single bond or fluorine atom. Examples of the divalent linking group include a linear or branched alkylene group having 1 to 10 carbon atoms, a linear or branched alkenylene group having 2 to 10 carbon atoms, and a formula (C _r H _2r O) _s Oxyalkylene group represented (wherein, r is an integer of 2 to 6, s is a number of 1 to 10, and the oxyalkylene group may have a linear structure or a branched structure) ) A divalent 6-membered aromatic group, a divalent 4- to 6-membered saturated or unsaturated aliphatic group, a divalent 5- to 6-membered heterocyclic group, or the following formula (4) And a divalent linking group represented. The divalent linking group may be a combination of two or more, may be a condensed ring, or may have a substituent. Q is preferably a linking group having a total atomic weight of 300 or less.

-YZ -... (4).
Y represents a linear or branched alkylene group having 1 to 10 carbon atoms, a divalent 6-membered aromatic group, a divalent 4- to 6-membered saturated or unsaturated aliphatic group, 2 A valent 5- to 6-membered heterocyclic group, or a condensed ring group thereof, Z is —O—, —S—, —CO—, —C (O) O—, —C (O) _{S -, - N (R)} -, - SO 2 -, - PO (OR) -, - N (R) -C (O) O -, - N (R) -C (O) -, - N ( R) —SO ₂ —, or —N (R) —PO (OR) —, wherein R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

Q is preferably a single bond, a linear or branched alkylene group having 1 to 10 carbon atoms, a group represented by the following formula (5), or a combination of these groups: — (CH ₂ ) _p ( However, p is an integer of 0 to 6, and when p is 0, it represents a single bond.
^{-Y 1 -Z 1 - ··· (5} ).
However, ^{Y 1} is a linear or branched alkylene group or a divalent 6-membered ring aromatic group, having 1 to 10 carbon atoms, ^{Z 1} is, -N (R) -, - SO 2 - Or —N (R) —SO ₂ —, wherein R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

R ^f is a polyfluoroalkyl group having 1 to 6 carbon atoms in the main chain and optionally having an etheric oxygen atom between carbon atoms. The boundary between Q and ^Rf is determined so that the carbon number of ^Rf is the smallest.
The polyfluoroalkyl group means a group in which two or more hydrogen atoms of an alkyl group having 1 to 6 carbon atoms in the main chain (carbon number not including a side chain) are substituted with fluorine atoms. The main chain means the straight chain when it is linear, and the longest carbon chain when it is branched. The side chain means a carbon chain other than the main chain among the carbon chains constituting the branched polyfluoroalkyl group. The side chain consists of an alkyl group, a monofluoroalkyl group or a polyfluoroalkyl group.

As the polyfluoroalkyl group, a partially fluoro-substituted alkyl group or a perfluoro-substituted group corresponding to a linear or branched alkyl group (methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group) An alkyl group is mentioned.
As the polyfluoroalkyl group having an etheric oxygen atom between carbon atoms, a polyfluoro (alkoxyalkyl) group or a polyfluoro (polyoxyalkylene alkyl ether) group is preferable, and a polyfluoro (2-ethoxyethyl) group or polyfluoro (2-methoxypropyl) group, polyfluoro (polyoxyethylene methyl ether) group, polyfluoro (polyoxypropylene methyl ether) group and the like can be mentioned.

R ^f is preferably linear. When R ^f is branched, it is preferable that the branched portion is present as close to the end of R ^f as possible.
R ^f is preferably a polyfluoroalkyl group, more preferably a perfluoroalkyl group in which all hydrogen atoms are substantially substituted with fluorine atoms, more preferably a linear perfluoroalkyl group, A linear perfluoroalkyl group having 4 to 6 carbon atoms is particularly preferable, and a linear perfluoroalkyl group having 6 carbon atoms is most preferable from the viewpoint of low accumulation and high releasability.

As the compound (A), a compound (A-1) represented by the following formula (6) is preferable.
^{_{CH 2 = C (R 11)}} -C (O) O- (CH 2) p -R F ··· (6).
However, R < ¹¹ > is a hydrogen atom or a methyl group, p is an integer of 0-6, R < ^F >
Is a linear perfluoroalkyl group having 1 to 6 carbon atoms.

Specific examples of the compound (A-1) include the following compounds.
_{CH 2 = CH-C (O} ) O- (CH 2) 2 - (CF 2) 6 F,
_{CH 2 = CH-C (O} ) O- (CH 2) 2 - (CF 2) 4 F,
_{CH 2 = CH-C (O} ) O- (CH 2) 2 - (CF 2) 2 F,
_{CH 2 = CH-C (O} ) O- (CH 2) 2 -CF 3,
_{CH 2 = C (CH 3)} -C (O) O- (CH 2) 2 - (CF 2) 6 F,
_{CH 2 = C (CH 3)} -C (O) O- (CH 2) 2 - (CF 2) 4 F,
_{CH 2 = C (CH 3)} -C (O) O- (CH 2) 2 - (CF 2) 2 F,
_{CH 2 = CH-C (O} ) O-CH 2 - (CF 2) 2 F,
_{CH 2 = CH-C (O} ) O-CH 2 -CF 3 and the like.

A compound (A) may be used individually by 1 type, and may use 2 or more types together. That is, the polymer (D) may have two or more units of the compound (A).
The ratio of the unit of the compound (A) in the polymer (D) is 20 to 45% by mass with respect to the total of the unit of the compound (A) to the unit of the compound (C). If the ratio of the unit of a compound (A) is 20 mass% or more, the mold release property of the hardened | cured material of a photocurable composition will become favorable. When the unit ratio of the compound (A) is 45% by mass or less, the polymer (D) and other components are uniformly compatible.

(Compound (B))
The compound (B) is a compound represented by the following formula (2) and having a number average molecular weight of 350 or less.
^{_{CH 2 = C (R 21)}} -C (O) O- (CH 2 CH (R 22) O) n -H ··· (2).

R ²¹ represents a hydrogen atom or a methyl group.
R ²² is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
N R22s in one molecule of the compound (B) may be the same or different.
n means the number of moles of alkylene oxide added when the compound (B) is produced, and is represented by an average value. n is 3-6, and 3.5-5.5 are preferable. When n is within this range, the polymer (D) and other components are uniformly compatible.

The number average molecular weight of the compound (B) is 350 or less, and preferably 300 or less. When the number average molecular weight of the compound (B) is 350 or less, the polymer (D) and other components are uniformly compatible.
The number average molecular weight of the compound (B) is determined by calculation based on n (average value).
When the compound (B) has a hydroxyl group, the fluorine component in the photocurable composition is easily directed to the surface, and the release property of the cured product of the composition is improved. Specifically, since the compound (B) has a hydroxyl group that is a polar group, polarity is imparted to the polymer (D). Therefore, the polymer (D) becomes amphiphilic and is easily mixed with each component in the photocurable composition. Therefore, as the fluoroalkyl group derived from the unit of compound (A) comes out on the surface, the fluorine-containing component in the photocurable composition is likely to come out on the surface, so that the cured product of the composition is separated. It is considered that moldability is improved.

Specific examples of the compound (B) include the following compounds.
_{CH 2 = C (CH 3)} -C (O) O- (CH 2 CH 2 O) n -H,
_{CH 2 = CH-C (O} ) O- (CH 2 CH 2 O) n -H,
_{CH 2 = C (CH 3)} -C (O) O- (CH 2 CH (CH 3) O) n -H,
_{CH 2 = CH-C (O} ) O- (CH 2 CH (CH 3) O) n -H,
_{CH 2 = C (CH 3)} -C (O) O- (CH 2 CH 2 O) n1 - (CH 2 CH (CH 3
) O) _n2- H,
_{CH 2 = CH-C (O} ) O- (CH 2 CH 2 O) n1 - (CH 2 CH (CH 3) O) n
_2- H etc.
However, n is 3-6 and n1 + n2 is 3-6.

A compound (B) may be used individually by 1 type, and may use 2 or more types together. That is, the polymer (D) may have two or more units of the compound (B).
The ratio of the unit of the compound (B) in a polymer (D) is 20-65 mass% with respect to the sum total of the unit of a compound (A)-the unit of a compound (C). When the proportion of the unit of the compound (B) is 20% by mass or more, the polymer (D) and other components are uniformly compatible. If the ratio of a compound (B) is 65 mass% or less, the mold release property of the hardened | cured material of a photocurable composition will become favorable.

(Compound (C))
The compound (C) is a compound represented by the following formula (3). ^{_{CH2 = CCH 2 = C (R}} 31) -C (O) O-R 32 ··· (3).

R ³¹ is a hydrogen atom or a methyl group.
R ³² is a monovalent aliphatic hydrocarbon group having 2 to 15 carbon atoms. When the carbon number of the monovalent aliphatic hydrocarbon group is within this range, the polymer (D) and other components are uniformly compatible. Examples of the monovalent aliphatic hydrocarbon group include an alkyl group, an alkenyl group, and an alkynyl group. The aliphatic hydrocarbon group may be linear, branched, or cyclic.
R ³² is preferably an alkyl group, more preferably an alkyl group having 4 to 12 carbon atoms.

Specific examples of the compound (C) include the following compounds.
_{CH 2 = C (CH 3)} -C (O) O-C 4 H 9,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 CH (CH 3) 2,
_{CH 2 = C (CH 3)} -C (O) O-C 6 H 13,
_{CH 2 = C (CH 3)} -C (O) O-Cy,
_{CH 2 = C (CH 3)} -C (O) O-CH (CH 3) C 2 H 5,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 CH (C 2 H 5) C 4 H 9,
_{CH 2 = C (CH 3)} -C (O) O-C 12 H 25,
_{CH 2 = CH-C (O} ) O-C 4 H 9,
_{CH 2 = CH-C (O} ) O-CH 2 CH (CH 3) 2,
_{CH 2 = CH-C (O} ) O-C 6 H 13,
_{CH 2 = CH-C (O} ) O-Cy,
_{CH 2 = CH-C (O} ) O-CH (CH 3) C 2 H 5,
_{CH 2 = CH-C (O} ) O-CH 2 CH (C 2 H 5) C 4 H 9,
_{CH 2 = CH-C (O} ) O-C 12 H 25 and the like.
However, Cy is a cyclohexyl group.

A compound (C) may be used individually by 1 type, and may use 2 or more types together. That is, the polymer (D) may have two or more units of the compound (C).
The ratio of the unit of the compound (C) in a polymer (D) is 5-40 mass% with respect to the sum total of the unit of a compound (A)-the unit of a compound (C). If the ratio of the unit of a compound (C) is this range, the mold release property of the hardened | cured material of a photocurable composition will become favorable.

(Fourth component)
In the polymerization of the compound (A) unit to the compound (C), a fourth component that can be copolymerized with the compound (A) unit to the compound (C) may be added.
Examples of the fourth component include compounds having one or more carbon-carbon unsaturated double bonds (excluding compounds (A) to (C)). ) Acrylate, maleic anhydride, phosphoric acid group-containing (meth) acrylate, and the like.

A 4th component may be used individually by 1 type, and may use 2 or more types together.
The ratio of the unit of the fourth component in the polymer (D) (the total amount when there are a plurality of units of the fourth component) is the unit of the compound (A) to the unit of the compound (C) and the unit of the fourth component 20 mass% or less is preferable with respect to the sum total (namely, all the units in a polymer (D)). When the unit of the fourth component exceeds 20% by mass, the release property of the cured product of the photocurable composition may be deteriorated.

(Polymer (D))
The polymer (D) is obtained by copolymerizing the compound (A), the compound (B), the compound (C) and, if necessary, a fourth component.
When the photocurable composition of the present invention contains the polymer (D) as a nonionic fluorine surfactant, it is possible to improve the releasability important in imprinting.

  The mass average molecular weight of the polymer (D) is 1000 to 5000, and preferably 2500 to 5000. If the mass average molecular weight of a polymer (D) is 1000 or more, the mold release property of the hardened | cured material of a photocurable composition will become favorable. When the mass average molecular weight of the polymer (D) is 5000 or less, the polymer (D) and other components are uniformly compatible, and the surface composition of the cured product becomes uniform.

Examples of the polymerization form include random polymerization, block polymerization, and graft polymerization, and random polymerization is preferable.
Examples of the type of polymerization include radical polymerization, anionic polymerization, and cationic polymerization.
The polymerization method is preferably a solution polymerization method in which the compound (A), the compound (B) and the compound (C) are copolymerized in a solvent in the presence of a polymerization initiator.

As a solvent, what is necessary is just a polymerization initiator and a compound (A)-a compound (C) melt | dissolving, Water, an organic solvent, a fluorine-type solvent, etc. are mentioned, An organic solvent is preferable from a soluble point. Examples of the organic solvent include acetone, methanol, ethanol, 2-propanol, tert-butanol, ethyl acetate, methyl acetate, butyl acetate, toluene, tetrahydrofuran, and the like.
Examples of the polymerization initiator include peroxides and azo compounds.
The polymerization temperature is preferably 0 to 150 ° C. from the viewpoint of ease of control, and more preferably 30 to 90 ° C. from the viewpoint of correlation with the activation energy of decomposition of the polymerization initiator.

A polymer (D) may be used individually by 1 type, and may use 2 or more types together. That is, the photocurable composition may have 2 or more types of polymers (D).
0.01-5 mass% is preferable with respect to a photocurable composition (composition containing a polymer (D)), and, as for the ratio of a polymer (D), 0.1-2 mass% is more preferable. If a polymer (D) is 0.01 mass% or more, the mold release property of the hardened | cured material of a photocurable composition will become favorable. If a polymer (D) is 5 mass% or less, a polymer (D) and another component will be compatibilized uniformly and the composition of the surface of hardened | cured material will become uniform.

<< Compound (X) >>
Compound (X) is a compound having one or more (meth) acryloyloxy groups, and in the present invention, a compound having one (meth) acryloyloxy group (that is, compound (Y)) and (meth) acryloyl The compound is divided into compounds having two or more oxy groups (namely, compound (H)). Compound (Y) is divided into compound (E) and compound (F).
The compound (X) is more preferably a compound having an acryloyloxy group because photopolymerization is easy. That is, the compound (E) and the compound (F) are more preferably compounds having one acryloyloxy group, and the compound (H) is more preferably all (meth) acryloyloxy groups are acryloyloxy groups. .

(Compound (E))
Compound (E) is a compound having a fluorine atom and one (meth) acryloyloxy group. When the photocurable composition of this invention contains a compound (E), mold release of the hardened | cured material of this photocurable composition and a mold becomes easy.
As the compound (E), the compound (A) represented by the chemical formula (1) is preferable. In addition, R ¹¹ in this chemical formula may be a fluorine atom. Furthermore, from the viewpoints of compatibility and environmental characteristics, the compound (A-1) represented by the chemical formula (6) and R ¹¹ is a hydrogen atom is more preferable as the compound (E).

Examples of the compound (E) include the following compounds in addition to the compounds exemplified as specific examples of the compound (A-1).
_{CH 2 = CH-C (O} ) O-CH 2 CH (OH) CH 2 -CF 2 CF 2 CF (CF 3) 2,
_{CH 2 = CH-C (O} ) O-CH (CF 3) 2,
_{CH 2 = CH-C (O} ) O-CH 2 - (CF 2) 6 F,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 - (CF 2) 6 F,
_{CH 2 = CH-C (O} ) O-CH 2 -CF 2 CF 2 H,
_{CH 2 = CH-C (O} ) O-CH 2 - (CF 2 CF 2) 2 H,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 -CF 2 CF 2 H,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 - (CF 2 CF 2) 2 H,
_{CH 2 = CH-C (O} ) O-CH 2 -CF 2 OCF 2 CF 2 OCF 3,
_{CH 2 = CH-C (O} ) O-CH 2 -CF 2 O (CF 2 CF 2 O) 3 CF 3,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 -CF 2 OCF 2 CF 2 OCF 3,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 -CF 2 O (CF 2 CF 2 O) 3 CF 3,
_{CH 2 = CH-C (O} ) O-CH 2 -CF (CF 3) OCF 2 CF (CF 3) O (CF 2) 3 F,
_{CH 2 = CH-C (O} ) O-CH 2 -CF (CF 3) O (CF 2 CF (CF 3) O) 2 (CF 2) 3 F,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 -CF (CF 3) OCF 2 CF (CF 3) O (CF 2) 3 F,
_{CH 2 = C (CH 3)} -C (O) O-CH 2 -CF (CF 3) O (CF 2 CF (CF 3) O) 2 (CF 2) 3 F.

The photocurable composition of the present invention preferably contains a compound (E). In that case, the compound (E) contained in the photocurable composition may be one type or two or more types. When a photocurable composition contains a compound (E), 5-40 mass% is preferable with respect to a photocurable composition (composition containing a compound (E)), and the ratio of a compound (E) is 10 -25 mass% is more preferable. If compound (E) is 5 mass% or more, the hardened | cured material which is excellent in mold release property can be obtained, and also foaming of a photocurable composition can be suppressed. Since foaming of the photocurable composition can be suppressed, it is easy to filter during preparation, and defects in the pattern shape due to mixing of bubbles during nanoimprinting can be eliminated. If compound (E) is 40 mass% or less, since it can mix uniformly, the hardened | cured material excellent in mechanical strength can be obtained.
Moreover, transparency of hardened | cured material can be made high by adoption of a compound (E). Furthermore, since the compound (E) contributes to a decrease in the viscosity and surface energy of the photocurable composition, when the cured product is used as a resist, it is useful for improving the resolution and reducing the residual layer.

(Compound (F))
Compound (F) is a compound having one (meth) acryloyloxy group (excluding compound (E)).
The compound (F) is a component that dissolves other components. When the photocurable composition of the present invention contains the compound (F), the polymer (D), the compound (E), and the compound (H) Improves compatibility. If the compatibility of the polymer (D) with the compound (E) and the compound (H) is good, foaming at the time of preparation of the photocurable composition is suppressed, and it is easy to pass through the filter. Preparation becomes easy and a uniform photocurable composition is obtained. Furthermore, by obtaining a homogeneous cured product, it is possible to sufficiently exhibit mold releasability and mechanical strength.
The viscosity of the compound (F) at 25 ° C. is preferably 0.1 to 200 mPa · s. If the viscosity of a compound (F) is this range, it will be easy to adjust the viscosity of a photocurable composition low. Further, when a cured product is used as a resist, it is useful for improving resolution and reducing residual layer.

Examples of the compound (F) include (meth) acrylates of monohydroxy compounds and mono (meth) acrylates of polyhydroxy compounds, and (meth) acrylates of monohydroxy compounds, particularly acrylates of monohydroxy compounds are preferred. Examples of monohydroxy compounds include alkanols having 4 to 20 carbon atoms in the alkyl portion, monocyclic, condensed polycyclic or alicyclic monool having a bridged ring, poly (or mono) alkylene glycol monoalkyl (or aryl). Ether and the like are preferable. A particularly preferred monohydroxy compound is an alicyclic monool having a bridging ring and an alkanol having 6 to 20 carbon atoms. Moreover, when using hardened | cured material as a resist, since etching tolerance improves, it is preferable to use the alicyclic monool which has a bridge ring.
Examples of the compound (F) include the following compounds.
Phenoxyethyl (meth) acrylate, 2-hydroxy-3-phenoxypyrrolyl (meth) acrylate, phenoxydiethylene glycol (meth) acrylate, benzyl (meth) acrylate, methoxytriethylene glycol (meth) acrylate, methoxypolyethylene glycol (meth) acrylate 2- (meth) acryloyloxyethyl hexahydrophthalic acid, behenyl (meth) acrylate, 2- (meth) acryloyloxyethyl succinic acid, stearyl (meth) acrylate, isostearyl (meth) acrylate, lauryl (meth) Acrylate, 2-ethylhexyl (meth) acrylate, 3- (trimethoxysilyl) propyl (meth) acrylate, butyl (meth) acrylate, ethoxyethyl (meth) acrylate , Methoxyethyl (meth) acrylate, glycidyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, N, N-diethylaminoethyl (meth) Acrylate, N, N-dimethylaminoethyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, 2-methyl-2-adamantyl (meth) acrylate, 2-ethyl-2-adamantyl (meth) acrylate, 3-hydroxy- 1-adamantyl (meth) acrylate, 1-adamantyl (meth) acrylate, isobornyl (meth) acrylate, 2-carboxyethyl (meth) acrylate, octyl (meth) acrylate, decyl (meth) acrylate 2- (tert-butylamino) ethyl (meth) acrylate, 1,2,2,6,6-pentamethyl-4-piperidyl (meth) acrylate, n-butyl (meth) acrylate, tert-butyl (meth) Acrylate, 4-tert-butylcyclohexyl (meth) acrylate, and the like.

  The photocurable composition of the present invention preferably contains the compound (F). In that case, the compound (F) contained in the photocurable composition may be one type or two or more types. When a photocurable composition contains a compound (F), 10-55 mass% is preferable with respect to a photocurable composition (composition containing a compound (F)), and the ratio of a compound (F), 15 -45 mass% is more preferable. If a compound (F) is 10 mass% or more, the viscosity of a photocurable composition can be adjusted low and compatibility with a polymer (D), a compound (E), and a compound (H) will become favorable. If compound (F) is 55 mass% or less, since sensitivity will become favorable and a crosslinking density will also rise, the hardened | cured material excellent in mechanical strength can be obtained.

(Compound (H))
Compound (H) is a compound having two or more (meth) acryloyloxy groups. The compound (H) may be a compound having a fluorine atom, but is usually a compound having no fluorine atom.
The compound (H) is a component that improves the sensitivity of the photocurable composition. Depending on the type of the compound (H), the cured product of the photocurable composition may have dry etching resistance, wet etching resistance, transparency, viscosity, refractive index, hardness, mechanical strength, flexibility, adhesion to the substrate, and the like. Various physical properties can be adjusted.
The number of (meth) acryloyloxy groups in compound (H) is suitably 2-10, preferably 2-6. If the number of (meth) acryloyloxy groups is too large, the cured product may be brittle. However, if the amount is small, a compound having a particularly large number of (meth) acryloyloxy groups can also be used.

The compound (H) is a poly (meth) acrylate of a polyhydroxy compound, and may have a hydroxyl group as long as the number of (meth) acryloyloxy groups is 2 or more. Polyhydroxy compounds include alkane polyols, alkane polyol alkylene oxide adducts, polyalkylene glycols, alkylene oxide adducts of compounds having two or more functional groups to which alkylene oxides such as polyhydric phenols and polyamines can be added, polycarbonate polyols And polyester polyol. Moreover, as a compound (H), the urethane (meth) acrylate which is a compound which has the poly (meth) acrylate structure of a polyhydroxy compound may be sufficient. Urethane (meth) acrylate is a compound obtained by reacting an isocyanate alkyl (meth) acrylate with a polyhydroxy compound, a compound obtained by reacting a polyisocyanate compound with a hydroxyl group-containing (meth) acrylate, etc. And a compound having a urethane bond. As the polyhydroxy compound that is a raw material of urethane (meth) acrylate, polyether polyol such as alkylene oxide adduct of alkane polyol, polyalkylene glycol, and alkylene oxide adduct of polyhydric phenol is preferable. Variant polyisocyanate compounds are preferred.
As the compound (H), poly (meth) acrylates of polyhydroxy compounds selected from the group consisting of alkane polyols, alkylene oxide adducts of alkane polyols, polyalkylene glycols and alkylene oxide adducts of polyhydric phenols, and polyethers Urethane (meth) acrylate obtained using a polyol is preferred.
Examples of the compound (H) include the following compounds.
Bisphenol A di (meth) acrylate, di (meth) acrylate of bisphenol A alkylene oxide adduct (ethoxylated bisphenol A di (meth) acrylate, propoxylated bisphenol A di (meth) acrylate, propoxylated ethoxylated bisphenol A di (meth) ) Acrylate, bisphenol A glycerolate di (meth) acrylate, bisphenol A propoxylate glycerolate di (meth) acrylate, etc.), ethoxylated bisphenol F di (meth) acrylate, tricyclodecane dimethanol di (meth) acrylate, full Orange (meth) acrylate, tricyclodecane dimethanol di (meth) acrylate, ethylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate 1,3-butanediol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, glycerol 1,3-diglycerolate di (meth) acrylate, 1,6-hexanediol ethoxylate di ( (Meth) acrylate, 1,6-hexanediol propoxylate di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 3-hydroxy-2,2-dimethylpropionate di (meth) acrylate, 1, 9-nonanediol di (meth) acrylate, 1,10-decanediol di (meth) acrylate, diethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, neopentyl glycol propoxylate di (meth) acrylate, polyethylene G Cold di (meth) acrylate, propylene glycol di (meth) acrylate, glycerol di (meth) acrylate, propylene glycol glycerolate di (meth) acrylate, polypropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, tripropylene glycol Di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, tripropylene glycol glycerolate di (meth) acrylate, 2-hydroxy-3-acryloyloxypropyl (meth) acrylate, 2-methyl-1,3-propanediol diacrylate, trimethylolpropane benzoate di (meth) acrylate, pentaerythritol di ( (Meth) acrylate monostearyl acid, trimethylolpropane ethoxylate methyl ether di (meth) acrylate, di (meth) acrylate having two or more urethane bonds (UA-4200 made by Shin-Nakamura Chemical Co., Ltd., diurethane di (meth) acrylate, etc.) . ), Di (meth) acrylate having a fluorene skeleton, 1,3-bis (3-methacryloyloxypropyl) -1,1,3,3-tetramethyldisiloxane, trimethylolpropane tri (meth) acrylate, trimethylol Propane ethoxytri (meth) acrylate, polyether triol tri (meth) acrylate, glycerin propoxytri (meth) acrylate, pentaerythritol tri (meth) acrylate, ethoxylated isocyanuric acid triacrylate, ethoxylated trimethylolpropane triacrylate, propoxylation Trimethylolpropane triacrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol ethoxytetra (meth) acrylate, ditrimethylolpropane tetra (meth) ) Acrylate, propoxylated pentaerythritol tetraacrylate, dipentaerythritol hexa (meth) acrylate, urethane di (meth) acrylate obtained using polyether diol, urethane tri (meth) acrylate obtained using polyether triol, Urethane tetra (meth) acrylate obtained by using polyether tetraol, urethane hexa (meth) acrylate obtained by using polyether hexaol, and the like.

  The photocurable composition of the present invention preferably contains a compound (H). In that case, the compound (H) contained in the photocurable composition may be one type or two or more types. When a photocurable composition contains a compound (H), 10-75 mass% is preferable with respect to a photocurable composition (composition containing a compound (H)), and the ratio of a compound (H) is 30. -55 mass% is more preferable. If a compound (H) is 10 mass% or more, the sensitivity of a photocurable composition can be improved. If compound (H) is 75 mass% or less, the photocurable composition in which each component was uniformly compatible can be obtained.

(Photopolymerization initiator (G))
As photopolymerization initiator (G), acetophenone photopolymerization initiator, benzoin photopolymerization initiator, benzophenone photopolymerization initiator, thioxanthone photopolymerization initiator, α-aminoketone photopolymerization initiator, α-hydroxy Ketone-based photopolymerization initiator, α-acyl oxime ester, benzyl- (o-ethoxycarbonyl) -α-monooxime, acylphosphine oxide, glyoxy ester, 3-ketocoumarin, 2-ethylanthraquinone, camphorquinone, tetramethylthiuram Sulfide, azobisisobutyronitrile, benzoyl peroxide, dialkyl peroxide, tert-butyl peroxypivalate, etc., and acetophenone photopolymerization initiator, benzoin photopolymerization initiator from the viewpoint of sensitivity and compatibility , Α-aminoketone photopolymerization An initiator or a benzophenone photopolymerization initiator is preferred.

Examples of the acetophenone photopolymerization initiator include the following compounds.
Acetophenone, p- (tert-butyl) 1 ′, 1 ′, 1′-trichloroacetophenone, chloroacetophenone, 2 ′, 2′-diethoxyacetophenone, hydroxyacetophenone, 2,2-dimethoxy-2′-phenylacetophenone, 2 -Aminoacetophenone, dialkylaminoacetophenone and the like.

Examples of the benzoin photopolymerization initiator include the following compounds.
Benzyl, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-2-methylpropan-1-one, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, benzyldimethyl ketal and the like.

Examples of the α-aminoketone photopolymerization initiator include the following compounds.
2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1, 2-methyl-1 [4- (methylthio) phenyl] -2-morpholinopropan-1-one, and the like.

Examples of the benzophenone-based photopolymerization initiator include the following compounds.
Benzophenone, benzoylbenzoic acid, methyl benzoylbenzoate, methyl-o-benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, hydroxypropylbenzophenone, acrylic benzophenone, 4,4′-bis (dimethylamino) benzophenone, and the like.

  The photocurable composition of the present invention usually contains the compound (G). In that case, the compound (G) contained in the photocurable composition may be one type or two or more types. 1-12 mass% is preferable with respect to a photocurable composition (composition containing a photoinitiator (G)), and, as for the ratio of a photoinitiator (G), 4-10 mass% is more preferable. When the photopolymerization initiator (G) is 1% by mass or more, a cured product can be easily obtained without performing an operation such as heating. If the photopolymerization initiator (G) is 12% by mass or less, the photopolymerization initiator (G) remaining in the cured product is reduced because the mixture can be uniformly mixed, and a decrease in physical properties of the cured product can be suppressed. .

<< other ingredients >>
The photocurable composition may contain components other than the polymer (D), the compound (E), the compound (F), the photopolymerization initiator (G), and the compound (H). As other components, a surfactant other than the polymer (D) (may be a fluorosurfactant), a photopolymerizable compound other than the compound (E), the compound (F) and the compound (H), Examples include photosensitizers, resins, metal oxide fine particles, carbon compounds, metal fine particles, and other organic compounds. The photocurable composition of the present invention does not particularly require a surfactant other than the polymer (D) or a photopolymerizable compound other than the compound (E), the compound (F) and the compound (H). On the other hand, photosensitizers, resins, metal oxide fine particles, carbon compounds, metal fine particles and the like (hereinafter collectively referred to as additive (I)) are used in the photocurable composition of the present invention depending on the purpose. Can be included.

As photosensitizers, n-butylamine, di-n-butylamine, tri-n-butylphosphine, allylthiourea, s-benzisoisouronium-p-toluenesulfinate, triethylamine, diethylaminoethyl methacrylate, triethylene Examples include amine compounds such as tetramine and 4,4′-bis (dialkylamino) benzophenone.
Examples of the resin include fluororesin, polyester, polyester oligomer, polycarbonate, poly (meth) acrylate, and the like.

Examples of the metal oxide fine particles include titania, silica, zirconia and the like.
Examples of the carbon compound include carbon nanotubes and fullerenes.
Examples of the metal fine particles include copper and platinum.
Examples of other organic compounds include porphyrins, metal-encapsulating porphyrins, ionic liquids (1-hexyl-3-methylimidazolium chloride, etc.), dyes, and the like.

  When the photocurable composition contains the above-mentioned other components (especially additive (I)), the ratio of the total amount of the other components is based on the photocurable composition (composition containing other components). 20 mass% or less is preferable. If additive (I) is 20 mass% or less, a photocurable composition can be mixed uniformly and a homogeneous photocurable composition will be obtained.

  In the photocurable composition of the present invention described above, a relatively low molecular weight polymer (D) obtained by copolymerizing specific compounds (A) to (C) at a specific ratio is nonionic. As a fluorosurfactant, it is possible to form a cured product with excellent releasability without using a fluorosurfactant made from a compound derived from perfluorooctane sulfonic acid. Excellent compatibility with ingredients.

<Method for producing molded body having fine pattern on surface>
The manufacturing method of the molded object which has a fine pattern on the surface of this invention has the following process (1)-(3).
(1) The process which makes the photocurable composition of this invention contact the surface which has this inversion pattern of the mold which has the inversion pattern of a fine pattern on the surface.
(2) A step of irradiating the photocurable composition with light in a state where the photocurable composition is in contact with the surface of the mold to cure the photocurable composition to obtain a cured product.
(3) A step of separating the mold from the cured product to obtain a molded body having a fine pattern on the surface.

  More specifically, the following methods (a) to (c) may be mentioned as the method for producing a molded product having a fine pattern on the surface according to the present invention.

Method (a): A method having the following steps (a-1) to (a-4).
(A-1) The process of arrange | positioning the photocurable composition 20 on the surface of the board | substrate 30, as shown in FIG.
(A-2) A step of pressing the mold 10 against the photocurable composition 20 so that the reversal pattern 12 of the mold 10 contacts the photocurable composition 20 as shown in FIG.
(A-3) A step of irradiating the photocurable composition 20 with light while the mold 10 is pressed against the photocurable composition 20 to cure the photocurable composition 20 to obtain a cured product.
(A-4) A step of separating the mold 10 or the substrate 30 and the mold 10 from the cured product to obtain a molded body having a fine pattern on the surface.

Method (b): A method having the following steps (b-1) to (b-4).
(B-1) The process of arrange | positioning the photocurable composition 20 on the surface of the inversion pattern 12 of the mold 10 as shown in FIG.
(B-2) A step of pressing the substrate 30 against the photocurable composition 20 on the surface of the mold 10 as shown in FIG.
(B-3) A step of irradiating the photocurable composition 20 with light while the substrate 30 is pressed against the photocurable composition 20 to cure the photocurable composition 20 to obtain a cured product.
(B-4) A step of separating the mold 10 or the substrate 30 and the mold 10 from the cured product to obtain a molded body having a fine pattern on the surface.

Method (c): A method having the following steps (c-1) to (c-4).
(C-1) A step of bringing the substrate 30 and the mold 10 closer or in contact with each other so that the reversal pattern 12 of the mold 10 is on the substrate 30 side, as shown in FIG.
(C-2) A step of filling the photocurable composition 20 between the substrate 30 and the mold 10 as shown in FIG.
(C-3) A step of irradiating the photocurable composition 20 with light in a state where the substrate 30 and the mold 10 are close to or in contact with each other to cure the photocurable composition 20 to obtain a cured product.
(C-4) A step of separating the mold 10 or the substrate 30 and the mold 10 from the cured product to obtain a molded body having a fine pattern on the surface.

Examples of the substrate include an inorganic material substrate and an organic material substrate.
Examples of the inorganic material include silicon wafer, glass, quartz glass, metal (aluminum, nickel, copper, etc.), metal oxide (alumina, etc.), silicon nitride, aluminum nitride, lithium niobate, and the like.
Examples of the organic material include fluorine resin, silicone resin, acrylic resin, polycarbonate, polyester (polyethylene terephthalate, etc.), polyimide, polypropylene, polyethylene, nylon resin, polyphenylene sulfide, and cyclic polyolefin.

  As the substrate, a surface-treated substrate may be used from the viewpoint of excellent adhesion to the photocurable composition. Examples of the surface treatment include primer coating treatment, ozone treatment, plasma etching treatment, and the like. Examples of the primer include polymethyl methacrylate, silane coupling agent, silazane and the like.

Examples of the mold include a non-translucent material mold or a translucent material mold.
Examples of the non-translucent material include a silicon wafer, nickel, copper, stainless steel, titanium, SiC, mica and the like.
Examples of the light transmitting material include quartz, glass, polydimethylsiloxane, cyclic polyolefin, polycarbonate, polyethylene terephthalate, and transparent fluororesin.

  At least one of the substrate and the mold is made of a material that transmits 40% or more of light having a wavelength at which the photopolymerization initiator (G) acts.

The mold has a reverse pattern on the surface. The reverse pattern is a reverse pattern corresponding to a fine pattern on the surface of the feature.
The reverse pattern has fine convex portions and / or concave portions.
As a convex part, the elongate ridge extending on the surface of a mold, the processus | protrusion scattered on the surface, etc. are mentioned.
Examples of the recess include a long groove extending on the surface of the mold and holes scattered on the surface.

Examples of the shape of the ridge or groove include a straight line, a curved line, a bent shape, and the like. A plurality of ridges or grooves may exist in parallel and have a stripe shape.
Examples of the cross-sectional shape of the ridge or groove in the direction perpendicular to the longitudinal direction include a rectangle, a trapezoid, a triangle, and a semicircle.
Examples of the shape of the protrusion or hole include a triangular prism, a quadrangular prism, a hexagonal prism, a cylinder, a triangular pyramid, a quadrangular pyramid, a hexagonal pyramid, a cone, a hemisphere, and a polyhedron.

The average width of the ridges or grooves is preferably 1 nm to 500 μm, more preferably 10 nm to 100 μm, and still more preferably 15 nm to 10 μm. The width of the ridge means the length of the base in the cross section in the direction orthogonal to the longitudinal direction. The width of the groove means the length of the upper side in the cross section in the direction orthogonal to the longitudinal direction.
The average width of the protrusions or holes is preferably 1 nm to 500 μm, more preferably 10 nm to 100 μm, and still more preferably 15 nm to 10 μm. The width of the protrusion means the length of the bottom side in a cross section perpendicular to the longitudinal direction when the bottom surface is elongated, and otherwise means the maximum length of the bottom surface of the protrusion. The width of the hole means the length of the upper side in the cross section perpendicular to the longitudinal direction when the opening is elongated, and otherwise means the maximum length of the opening of the hole.

As for the height of a convex part, 1 nm-500 micrometers are preferable on average, 10 nm-100 micrometers are more preferable, and 15 nm-10 micrometers are still more preferable.
The average depth of the recesses is preferably 1 nm to 500 μm, more preferably 10 nm to 100 μm, and still more preferably 15 nm to 10 μm.

  In the region where the reverse pattern is dense, the interval between adjacent convex portions (or concave portions) is preferably 1 nm to 500 μm on average, and more preferably 1 nm to 50 μm. The interval between adjacent convex portions means the distance from the end of the base of the cross section of the convex portion to the start of the base of the cross section of the adjacent convex portion. The interval between adjacent recesses means the distance from the end of the upper side of the cross section of the recess to the start end of the upper side of the cross section of the adjacent recess.

The minimum dimension of the convex portion is preferably 1 nm to 50 μm, more preferably 1 nm to 500 nm, and particularly preferably 1 nm to 50 nm. The minimum dimension means the minimum dimension among the width, length, and height of the convex portion.
The minimum dimension of the recess is preferably 1 nm to 50 μm, more preferably 1 nm to 500 nm, and particularly preferably 1 nm to 50 nm. The minimum dimension means the minimum dimension among the width, length and depth of the recess.

Step (a-1):
Examples of the arrangement method of the photocurable composition include an inkjet method, a potting method, a spin coating method, a roll coating method, a casting method, a dip coating method, a die coating method, a Langmuir projet method, and a vacuum deposition method.
The photocurable composition may be disposed on the entire surface of the substrate or may be disposed on a part of the surface of the substrate.

Step (a-2):
The press pressure (gauge pressure) when pressing the mold against the photocurable composition is preferably more than 0 to 10 MPa, more preferably 0.1 to 5 MPa. 0-100 degreeC is preferable and the temperature at the time of pressing a mold against a photocurable composition has more preferable 10-60 degreeC.

Step (b-1):
Examples of the arrangement method of the photocurable composition include an inkjet method, a potting method, a spin coating method, a roll coating method, a casting method, a dip coating method, a die coating method, a Langmuir projet method, and a vacuum deposition method.
The photocurable composition may be disposed on the entire surface of the reversal pattern of the mold, may be disposed on a part of the reversal pattern, or is preferably disposed on the entire surface of the reversal pattern.

Step (b-2):
The press pressure (gauge pressure) when pressing the substrate against the photocurable composition is preferably more than 0 to 10 MPa, more preferably 0.1 to 5 MPa. 0-100 degreeC is preferable and the temperature at the time of pressing a board | substrate against a photocurable composition has more preferable 10-60 degreeC.

Step (c-2):
Examples of the method for filling the photocurable composition between the substrate and the mold include a method of sucking the photocurable composition into the gap by capillary action.
0-100 degreeC is preferable and, as for the temperature at the time of filling a photocurable composition, 10-60 degreeC is more preferable.

Steps (a-3), (b-3), (c-3):
Examples of the method of irradiating light include a method of irradiating light from the mold side using a translucent material mold, and a method of irradiating light from the substrate side using a translucent material substrate. The wavelength of light is preferably 200 to 500 nm. When irradiating with light, curing may be promoted by heating the photocurable composition.
0-100 degreeC is preferable and the temperature at the time of irradiating light has more preferable 10-60 degreeC.

Step (a-4), (b-4), (c-4):
0-100 degreeC is preferable and, as for the temperature at the time of isolate | separating a mold or a board | substrate and a mold from hardened | cured material, 10-60 degreeC is more preferable.

When the substrate and the mold are separated from the cured product, as shown in FIG. 3, a molded body 40 having a fine pattern 44 on the surface, which is made only of the cured product 42 having the surface to which the mold reversal pattern is transferred, is obtained.
When only the mold is separated from the cured product, as shown in FIG. 4, a molded product 40 (laminated) having a fine pattern 44 on the surface, which is composed of a cured product 42 having a surface to which a reversal pattern of the mold is transferred and a substrate 30. Body) is obtained.

Examples of the molded article having a fine pattern on the surface include the following articles.
Optical element: microlens array, optical waveguide element, optical switching element (grid polarization element, wave plate, etc.), Fresnel zone plate element, binary element, blaze element, photonic crystal, etc.
Antireflective member: AR (Anti Reflection) coating member, etc.
Chips: Biochips, μ-TAS (Micro-Total Analysis Systems) chips, microreactor chips, and the like.
Others: Recording media, display materials, catalyst carriers, filters, sensor members, resists used in the manufacture of semiconductor devices (including MEMS), electrolytic replica molds (mother molds), imprint replica molds ( Daughter mold).

  When used as a resist, a fine pattern can be formed on the substrate by etching (dry etching or wet etching) the substrate using the molded body having the fine pattern as a mask.

  When used as a replica mold for electrolysis, after forming a conductive layer by electroless plating or metal deposition on the surface of the molded body having the fine pattern, by depositing nickel by nickel electrolytic plating on the surface of the conductive layer, A nickel electroformed mold can be produced. Since the surface of the molded body is excellent in releasability, the produced nickel electroformed mold can be easily separated from the molded body.

  Moreover, since the molded body having the fine pattern has high transparency and high releasability, it may be used as a replica mold for imprinting. In particular, when a translucent material is used as the base material of the molded body, it can be used as a replica mold for optical nanoimprint.

  In the method for producing a molded article having a fine pattern on the surface according to the present invention described above, a cured product excellent in releasability can be formed, and the compatibility between the fluorosurfactant and other components is excellent. Since the photocurable composition of the present invention is used, it is possible to produce a molded article having a fine pattern on which the reversal pattern of the mold is accurately transferred and having a uniform surface composition.

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples.
Examples 1, 5-7, 10, 12, 13, 17-32, 37-46 are examples, and examples 2-4, 8, 9, 11, 14-16, 33-36 are comparative examples.

(Mass average molecular weight)
The mass average molecular weight of the polymer (D) was measured using a GPC analyzer (manufactured by Showa Denko KK, GPC-101 type plate). Specifically, using columns (KF801, KF802, KF803) manufactured by Showa Denko KK, separation was performed using tetrahydrofuran as an eluent, and a mass average molecular weight was determined using polymethyl methacrylate as a standard substance.

(viscosity)
The viscosity at 25 ° C of the photocurable composition was measured using a viscometer (manufactured by Toki Sangyo Co., Ltd., TV-20). The viscometer has been calibrated with a standard solution (JS50 (33.17 mPa · S at 25 ° C.)). Those having a viscosity of 300 mPa · S or less were judged to be good.

(sensitivity)
The sensitivity of the photocurable composition was determined as follows.
The photocurable composition was applied to the surface of the substrate so as to have a thickness of about 1.5 μm by spin coating, and then a high-pressure mercury lamp (at 255 to 315 and 365 nm at 1.5 to 2.0 kHz). A light source having a main wavelength.) Was irradiated with light from the light source, and the integrated amount of light until it was completely cured was determined as the sensitivity. Whether or not the photocurable composition was completely cured was determined by measuring the IR spectrum and by the presence or absence of olefin absorption in the acrylic portion. It was judged that the sensitivity was 500 mJ / cm ² or less.

(Contact angle)
The contact angle of the cured product with respect to water was measured as follows.
The photocurable composition is dropped on the surface of the polyethylene terephthalate (hereinafter referred to as PET) film (manufactured by Toyobo Co., Ltd., trade name: Cosmo Shine A4100) on the easy adhesion side, covered with slide glass, and from above A cured product was obtained by irradiation with light from a high-pressure mercury lamp (a light source having a dominant wavelength at 255, 315, and 365 nm at 1.5 to 2.0 kHz) for 15 seconds.
About this hardened | cured material, 4 microliters of water was dripped on the surface of hardened | cured material and measured using the contact angle meter (the Kyowa Interface Science company make, CA-X150 type | mold).
A contact angle of 80 degrees or more was judged to be good. The contact angle is a measure of the releasability of the cured product.
Moreover, when the contact angle was measured at a plurality of locations, the variation degree σ was determined to be 2.5 or less. The variation degree σ indicates the uniformity of the composition after the surface of the cured product.

(Compound (A))
Compound (A1-1): 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl methacrylate (manufactured by Aldrich).
_{CH 2 = C (CH 3)} -C (O) O- (CH 2) 2 - (CF 2) 6 F ··· (A1-1).

(Compound (B))
Compound (B-1): Polyethylene glycol monomethacrylate (manufactured by NOF Corporation, number average molecular weight: 284).
_{CH 2 = C (CH 3)} -C (O) O- (CH 2 CH 2 O) 4.5 -H ··· (B-1).
Compound (B-2): Polyethylene glycol monomethacrylate (manufactured by NOF Corporation, number average molecular weight: 438).
_{CH 2 = C (CH 3)} -C (O) O- (CH 2 CH 2 O) 8 -H ··· (B-2).
Compound (B-3): Polyethylene glycol monomethacrylate (manufactured by NOF Corporation, number average molecular weight: 174).
_{CH 2 = C (CH 3)} -C (O) O- (CH 2 CH 2 O) 2 -H ··· (B-3).
Compound (B-4): Methoxypolyethylene glycol monomethacrylate (manufactured by NOF Corporation, number average molecular weight: 276).
_{CH 2 = C (CH 3)} -C (O) O- (CH 2 CH 2 O) 4 -CH 3 ··· (B-4).

(Compound (C))
Compound (C-1): 2-ethylhexyl methacrylate (manufactured by Aldrich).
_{CH 2 = C (CH 3)} -C (O) O-CH 2 CH (C 2 H 5) C 4 H 9 ··· (C-
1).
Compound (C-2): Hexyl methacrylate (manufactured by Aldrich).
_{CH 2 = C (CH 3)} -C (O) O-C 6 H 13 ··· (C-2).
Compound (C-3): Isobutyl methacrylate (manufactured by Aldrich).
_{CH 2 = C (CH 3)} -C (O) O-CH (CH 3) C 2 H 5 ··· (C-3).
Compound (C-4): Dodecamethacrylate (manufactured by Aldrich).
_{CH 2 = C (CH 3)} -C (O) O-C 12 H 25 ··· (C-4).
Compound (C-5): Octadeca methacrylate (manufactured by Aldrich).
_{CH 2 = C (CH 3)} -C (O) O-C 18 H 37 ··· (C-5).

(Compound (E))
Compound (E1-1): 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl acrylate (manufactured by Aldrich).
_{CH 2 = CH-C (O} ) O- (CH 2) 2 - (CF 2) 6 ··· (E1-1).

(Compound (F))
Compound (F-1): 2-methyl-2-adamantyl acrylate (manufactured by Idemitsu Kosan Co., Ltd.).

Compound (F-2): Isobornyl acrylate (manufactured by Aldrich).
Compound (F-3): 2-ethylhexyl acrylate (manufactured by Aldrich).

(Photopolymerization initiator (G))
Photopolymerization initiator (G-1): Ciba Geigy Specialty, trade name: Irgacure 651
Photopolymerization initiator (G-2): Ciba Geigy Specialty, trade name: Irgacure 184
Photopolymerization initiator (G-3): manufactured by Ciba Geigy Specialty, trade name: Irgacure 907.

(Compound (H))
Compound (H-1): Tetraethylene glycol diacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.).
Compound (H-2): a compound represented by the following formula (wherein R is a mixture of a compound having a hydrogen atom and a compound having R is a methyl group) (manufactured by Aldrich).
_{CH 2 = C (CH 3)} -COO-CH 2 CH 2 OCONHCH 2 - (C (CH 3) R-
_{CH 2) 2 -CH 2 NHCOO-} CH 2 CH 2 -OCO-C (CH 3) = CH 2
Compound (H-3): Polyether type urethane acrylate (trade name: UA-4200 (manufactured by Shin-Nakamura Chemical Co., Ltd.)).
Compound (H-4): Neopentyl glycol dimethacrylate (manufactured by Aldrich).
Compound (H-5): Tricyclodecane diacrylate (manufactured by Aldrich).
Compound (H-6): Bisphenol A propoxy diacrylate (manufactured by Aldrich).
Compound (H-7): Trimethylolpropane triacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd.).
Compound (H-8): Pentaerythritol tetraacrylate (manufactured by Aldrich).

[Synthesis Example 1]
In a 100 mL pressure-resistant reaction vessel, 16.00 g of compound (A1-1), 16.68 g of compound (B-1), 7.32 g of compound (C-1), octanethiol (Wako Pure Chemical) as a molecular weight regulator 3.88 g of Kogyo Co., Ltd., 40.00 g of ethyl acetate (manufactured by Wako Pure Chemical Industries, Ltd.) as a solvent, and dimethyl 2,2′-azobis (2-methylpropionate) (Wako Pure Chemical Industries, Ltd.) as a polymerization initiator Was prepared, and the inside of the reaction vessel was purged with nitrogen, followed by polymerization at 70 ° C. for 16 hours with stirring. After completion of the polymerization, ethyl acetate was distilled off under reduced pressure to obtain a polymer (D-1).

[Synthesis Examples 2 to 11]
As shown in Table 1, polymers (D-2) to (D-11) were obtained in the same manner as in Synthesis Example 1 except that the types and preparation ratios of the compounds (A) to (C) were changed.

[Synthesis Example 12]
A polymer (D-12) was obtained in the same manner as in Synthesis Example 1 except that 5.04 g of octanethiol as a molecular weight modifier was used.

[Synthesis Example 13]
A polymer (D-13) was obtained in the same manner as in Synthesis Example 1 except that 5.82 g of octanethiol as a molecular weight modifier was used.

[Synthesis Example 14]
A polymer (D-14) was obtained in the same manner as in Synthesis Example 1 except that 6.25 g of octanethiol as a molecular weight modifier was used.

[Synthesis Example 15]
A polymer (D-15) was obtained in the same manner as in Synthesis Example 1 except that octanethiol as a molecular weight modifier was changed to 1.94 g.
[Synthesis Example 16]
In a 100 mL pressure-resistant reaction vessel, 14.20 g of compound (A1-1), 9.94 g of compound (B-1), 4.26 g of compound (C-1), octanethiol (Wako Pure Chemical) as a molecular weight regulator. 2.76 g of Kogyo Kogyo Co., Ltd., 28.41 g of ethyl acetate (manufactured by Wako Pure Chemical Industries, Ltd.) as a solvent, dimethyl 2,2′-azobis (2-methylpropionate) (Wako Pure Chemical Industries, Ltd.) as a polymerization initiator 0.43 g) was charged, and the inside of the reaction vessel was replaced with nitrogen, followed by polymerization at 70 ° C. for 16 hours with stirring. After completion of the polymerization, ethyl acetate was distilled off under reduced pressure to obtain a polymer (D-16).
[Synthesis Examples 17 to 19]
As shown in Table 1, polymers (D-17) to (D-19) were obtained in the same manner as in Synthesis Example 16 except that the charging ratios of the compounds (A) to (C) were changed.

[Example 1]
In a vial container (internal volume 13 mL), 0.04 g of the polymer (D-1), 2.00 g of the compound (E1-1), 4.00 g of the compound (F-1), and the compound (H-1) 3.36 g was added, then 0.60 g of the photopolymerization initiator (G-1) was mixed, and filtered through a 0.2 μm polyethylene terephthalate filter to obtain a photocurable composition. The composition of the composition is shown in Table 2, and the evaluation results are shown in Table 3.

[Examples 2-43]
A photocurable composition was obtained in the same manner as in Example 1 except that the composition was changed as shown in Table 2. The evaluation results are shown in Table 3.

Example 44
At 25 ° C., one drop of the photocurable composition of Example 1 was dropped on the surface of the silicon wafer to obtain a silicon wafer on which the composition was uniformly applied. A quartz mold having a convex portion with a width of 800 nm, a height of 180 nm, and a length of 10 μm on the surface was pressed against the photocurable composition on the silicon wafer and pressed as it was at 0.5 MPa (gauge pressure).
Next, at 25 ° C., the photocurable composition was irradiated with light from a high-pressure mercury lamp (a light source having main wavelengths of 255, 315, and 365 nm at 1.5 to 2.0 kHz) from the mold side for 15 seconds. A cured product of the photocurable composition was obtained. At 25 ° C., the mold was separated from the silicon wafer to obtain a molded body in which a cured product having a concave portion on the surface where the convex portion of the mold was inverted was formed on the surface of the silicon wafer. The depth of the recess was 178 to 180 nm.
Next, dry etching was performed for 120 seconds under a condition of 5 Pa and 70 W using a mixed gas of 40 sccm of CF4 and 10 sccm of oxygen with a dry etching apparatus manufactured by Samco using the molded body as a mask. A pattern having a width of 805 nm, a depth of 30 nm, and a length of 10 μm could be engraved on the silicon.

Example 45
At 25 ° C., one drop of the photocurable composition of Example 30 was dropped on the surface of the PET film (Toyobo Co., Ltd., trade name: Cosmo Shine A4100) on the easy-adhesion side, and the composition was uniformly applied to the PET. A film was obtained. A quartz mold having a convex portion with a width: 800 nm, height: 180 nm, and length: 10 μm on the surface was pressed against the photocurable composition on the PET film and pressed as it was at 0.5 MPa (gauge pressure).
Next, at 25 ° C., the photocurable composition was irradiated with light from a high-pressure mercury lamp (a light source having main wavelengths of 255, 315, and 365 nm at 1.5 to 2.0 kHz) from the mold side for 15 seconds. A cured product of the photocurable composition was obtained. At 25 ° C., the mold was separated from the PET film, and a molded body in which a cured product having a concave portion on which the convex portion of the mold was inverted was formed on the surface of the PET film was obtained. The depth of the recess was 178 to 180 nm.

  Subsequently, the molded body was used as a replica mold for nanoimprinting. Specifically, one drop of the photocurable composition of Example 1 was dropped on the surface of the easy-adhesion side of a PET film (trade name: Cosmo Shine A4100, manufactured by Toyobo Co., Ltd.), and the composition was uniformly applied to the PET. A film was obtained. The replica mold was pressed against the photocurable composition on the PET film, and a high pressure mercury lamp (255, 315 at 1.5 to 2.0 kHz) was applied to the photocurable composition from the replica mold side while applying a pressure of 5 MPa at 25 ° C. And a light source having a dominant wavelength at 365 nm.) Was irradiated for 15 seconds to obtain a cured product of the photocurable composition of Example 1. At 25 ° C., the replica mold was separated from the PET film to obtain a molded body on which the cured product having convex portions on the surface where the concave portions of the replica mold were inverted was formed on the surface of the PET film. The height of the convex portion was 175 to 177 nm.

[Example 46]
At 25 ° C., one drop of the photocurable composition of Example 30 was dropped on the surface of the PET film (Toyobo Co., Ltd., trade name: Cosmo Shine A4100) on the easy-adhesion side, and the composition was uniformly applied to the PET. A film was obtained. A quartz mold having a convex portion with a width: 800 nm, height: 180 nm, and length: 10 μm on the surface was pressed against the photocurable composition on the PET film and pressed as it was at 0.5 MPa (gauge pressure).
Next, at 25 ° C., the photocurable composition was irradiated with light from a high-pressure mercury lamp (a light source having main wavelengths of 255, 315, and 365 nm at 1.5 to 2.0 kHz) from the mold side for 15 seconds. A cured product of the photocurable composition was obtained. At 25 ° C., the mold was separated from the PET film, and a molded body in which a cured product having a concave portion on which the convex portion of the mold was inverted was formed on the surface of the PET film was obtained. The depth of the recess was 178 to 180 nm.

  Subsequently, the compact was used as a replica mold for nickel electroforming. Specifically, the replica mold was immersed in an electroless nickel plating solution (manufactured by Koyo Chemical Co., Ltd.), and a nickel layer was provided on the surface. Subsequently, the replica mold with the nickel layer was immersed in a nickel electrolytic plating solution, and electricity was passed through the solution to perform nickel electroforming. When the nickel layer reached a thickness of about 200 μm, the plating operation was stopped, the replica mold with the nickel layer was pulled up from the nickel electrolytic plating solution, and the nickel mold and the replica mold were peeled off. The height of the convex part of the obtained nickel mold was 178 to 180 nm.

  The molded product having a fine pattern on the surface obtained by the production method of the present invention includes an optical element, an antireflection member, a biochip, a microreactor chip, a recording medium, a catalyst carrier, a resist for manufacturing a semiconductor device, and an imprint. It is useful as a replica mold, a replica mold for electroforming, and the like.

DESCRIPTION OF SYMBOLS 10 Mold 12 Inversion pattern 20 Photocurable composition 30 Substrate 40 Molded body 42 Cured material 44 Fine pattern

Claims (15)

A photocurable composition for imprints comprising as a main component a compound having at least one acryloyloxy group or methacryloyloxy group, comprising the following compounds (A), (B) and (C): The ratio of the unit of the following compound (A) to the total of the unit of the following compound (A), the unit of the following compound (B) and the unit of the following compound (C) is 20 to 45% by mass, The ratio of the unit of (B) is 20-65 mass%, the ratio of the unit of the following compound (C) is 5-40 mass%, and the polymer (D) whose mass average molecular weight is 1000-5000 is included. A photocurable composition for imprints.
Compound (A): A compound represented by the following formula (1).
^{_{CH 2 = C (R 11)}} -C (O) O-Q-R f ··· (1).
Where R ¹¹ is a hydrogen atom or a methyl group, Q is a single bond or a divalent linking group containing no fluorine atom, and R ^f is a carbon atom having 1 to 6 carbon atoms in the main chain. It is a polyfluoroalkyl group which may have an etheric oxygen atom in between.
Compound (B): A compound represented by the following formula (2) and having a number average molecular weight of 350 or less.
_{^{CH 2 = C (R 21)}} -C (O) O- (CH 2 CH (R 22) O) n -H ··· (2).
However, R < ²¹ > is a hydrogen atom or a methyl group, R < ²² > is a hydrogen atom or a C1-C4 alkyl group, n is 3-6, Compound (B) in 1 molecule The n R ^{22 s} may be the same or different.
Compound (C): Compound represented by the following formula (3).
^{_{CH 2 = C (R 31)}} -C (O) O-R 32 ··· (3).
However, R ³¹ is a hydrogen atom or a methyl group, and R ³² is a monovalent aliphatic hydrocarbon group having 2 to 15 carbon atoms.   The photocurable composition of Claim 1 whose ratio of the polymer (D) in a photocurable composition is 0.01-5 mass% with respect to a photocurable composition.   The photocurable composition according to claim 1 or 2, wherein at least a part of the compound having one or more acryloyloxy groups or methacryloyloxy groups is a compound having one acryloyloxy group or methacryloyloxy group.   At least a part of the compound having one acryloyloxy group or methacryloyloxy group is the compound (E) having a fluorine atom, and the proportion of the compound (E) in the photocurable composition is the photocurable composition The photocurable composition of Claim 3 which is 5-40 mass% with respect to.   At least a part of the compound having one acryloyloxy group or methacryloyloxy group is the compound (F) having no fluorine, and the ratio of the compound (F) in the photocurable composition is the photocurable composition. The photocurable composition of Claim 3 which is 10-55 mass% with respect to.   At least a part of the compound having one or more acryloyloxy groups or methacryloyloxy groups is a compound (H) having two or more acryloyloxy groups or methacryloyloxy groups, and the compound (H) in the photocurable composition The photocurable composition of Claim 1 or 2 whose ratio is 10-75 mass% with respect to a photocurable composition.   The photocurable composition of any one of Claims 1-6 in which a photocurable composition contains 1-12 mass% of photoinitiators (G) with respect to a photocurable composition.   The photocurable composition of any one of Claims 1-7 whose viscosity in 25 degreeC of a photocurable composition is 3-200 mPa * s. It is a method for producing a molded body having a fine pattern on the surface,
The step of bringing the photocurable composition for imprints according to any one of claims 1 to 8 into contact with the surface having the reverse pattern of the mold having the reverse pattern of the fine pattern on the surface;
In a state where the photocurable composition is in contact with the surface of the mold, the photocurable composition is irradiated with light to cure the photocurable composition to obtain a cured product;
Separating the mold from the cured product to obtain a molded body having a fine pattern on the surface;
The manufacturing method of the molded object which has a fine pattern on the surface. It is a method for producing a molded body having a fine pattern on the surface,
The step of disposing the photocurable composition for imprints according to any one of claims 1 to 8 on the surface of a substrate;
A step of pressing a mold having a reverse pattern of the fine pattern on the photocurable composition so that the reverse pattern of the mold is in contact with the photocurable composition;
In a state where the mold is pressed against the photocurable composition, the photocurable composition is irradiated with light to cure the photocurable composition to obtain a cured product;
Separating the mold or the substrate and the mold from the cured product to obtain a molded body having a fine pattern on the surface;
The manufacturing method of the molded object which has a fine pattern on the surface. It is a method for producing a molded body having a fine pattern on the surface,
Disposing the photocurable composition for imprints according to any one of claims 1 to 8 on the surface having the reverse pattern of the mold having the reverse pattern of the fine pattern on the surface;
Pressing the substrate against the photocurable composition;
In the state of pressing the substrate against the photocurable composition, irradiating the photocurable composition with light, curing the photocurable composition to obtain a cured product,
Separating the mold or the substrate and the mold from the cured product to obtain a molded body having a fine pattern on the surface;
The manufacturing method of the molded object which has a fine pattern on the surface. It is a method for producing a molded body having a fine pattern on the surface,
A step of bringing a substrate and a mold having a reversal pattern of the fine pattern on its surface so that the reversal pattern of the mold is on the side of the substrate; or
Filling the photocurable composition for imprints according to any one of claims 1 to 8 between the substrate and the mold;
Irradiating the photocurable composition with light in a state where the substrate and the mold are close to or in contact with each other, curing the photocurable composition to obtain a cured product;
Separating the mold or the substrate and the mold from the cured product to obtain a molded body having a fine pattern on the surface;
The manufacturing method of the molded object which has a fine pattern on the surface.   The manufacturing method of the molded object which has a fine pattern on the surface of any one of Claims 9-12 whose said fine pattern is a resist pattern.   The manufacturing method of the molded object which has a fine pattern on the surface of any one of Claims 9-12 whose molded object which has a fine pattern on the surface is a replica mold for imprints.   The manufacturing method of the molded object which has a fine pattern on the surface of any one of Claims 9-12 whose molded object which has a fine pattern on the surface is a replica mold for electroforming.

Images