KR20150023751A - Resin composition for reverse wavelength dispersion film, and reverse wavelength dispersion film and reverse wavelength dispersion sheet which comprise same - Google Patents

Abstract

An object of the present invention is to provide a novel resin composition for reversed wavelength dispersing film which is excellent in saponification resistance, transparency, positive birefringence and reverse wavelength dispersion, and the resin composition for reversed wavelength dispersing film of the present invention, At least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group possessed by the polysaccharide is chemically modified with at least one functional group selected from the group consisting of ether group, urethane group, urea group, amide group and imide group, (A), wherein the average molecular dispersion of all monosaccharide units constituting the modified polysaccharide (A) is 0.50 to 20.0, and the resin composition for an inverted-wavelength dispersing film is 80 μm And the absolute value of the reflection chromaticity b * obtained in accordance with JIS-Z8729 of the film formed to a film thickness of 0 to 1.0 is 0 to 1.0.

Description

TECHNICAL FIELD [0001] The present invention relates to a resin composition for an inverse wavelength dispersive film, and to an inverse wavelength dispersive film and an inverse wavelength dispersive sheet comprising the resin composition, and to an inverse wavelength dispersive film comprising the same. BACKGROUND ART [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition for an inverse wavelength dispersive film, and to an inverse wavelength dispersive film and an inverse wavelength dispersive sheet containing the same.

Acetylcellulose is used in various fields because it has excellent nonflammability, transparency, surface appearance and electrical insulation.

As a reverse wavelength dispersion film (phase difference film) which is one of uses of acetyl cellulose film, a resin which simultaneously satisfies both positive birefringence and reverse wavelength dispersion is required, and acetyl cellulose having an acetyl group substitution degree of less than 2.5 is used. However, the acetyl cellulose having an acetyl group substitution degree of less than 2.5 has a problem of eluting by saponification treatment for enhancing the adhesion, and the surface of the acetyl cellulose having an acetyl group substitution degree of less than 2.5 is covered with an acetyl cellulose having an acetyl group substitution degree of 2.5 or more (For example, Patent Document 1). However, there is a limit to the film thickness of the reverse wavelength dispersing film, and it is difficult to cover the reverse wavelength dispersing film sufficiently to impart saponification treatment property to the inside. As a solution to the above problem, resins having positive birefringence other than acetyl cellulose are required. In addition, the inverse wavelength dispersibility can be achieved by a compound with another resin, but it is extremely difficult to select from the viewpoint of transparency (compatibility).

Japanese Patent Laid-Open Publication No. 2012-088408

An object of the present invention is to provide a novel resin composition for reverse wavelength dispersion film which is excellent in saponification resistance, transparency, positive birefringence and reverse wavelength dispersion.

Means for Solving the Problems The present inventors have made intensive studies in order to achieve the above object, and as a result, the present invention has been reached. That is, the present invention relates to a polysaccharide wherein at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group possessed by the polysaccharide is at least one kind selected from the group consisting of ether group, urethane group, urea group, amide group and imide group A resin composition for an inverted-wavelength dispersing film comprising a modified polysaccharide (A) which is chemically modified with a functional group, wherein the average molecular dispersion of all monosaccharide units constituting the modified polysaccharide (A) is 0.50 to 20.0, A resin composition for a reverse wavelength dispersive film having a total reflection chromaticity b * of 0 to 1.0 as determined in accordance with JIS-Z8729 of a film molded to a film thickness of 80 mu m of the resin composition for a film; A reverse wavelength dispersion film or an inverse wavelength dispersion sheet formed from the resin composition for the reverse wavelength dispersion film; A phase difference film or a phase difference sheet formed from the resin composition for the reverse wavelength dispersion film; Is a circularly polarizing film or a circularly polarizing sheet formed from the resin composition for reverse wavelength dispersion film.

The film and the sheet formed from the resin composition for reversed wavelength dispersion film of the present invention are excellent in transparency, saponification resistance, positive birefringence and reverse wavelength dispersion.

The resin composition for a reverse wavelength dispersing film of the present invention is characterized in that at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group possessed by the polysaccharide is an ether group, a urethane group, a urea group, an amide group and an imide group (A) comprising at least one functional group selected from the group consisting of a polysaccharide (A) and a polysaccharide (B), wherein the average molecular dispersion of all monosaccharide units constituting the modified polysaccharide (A) is from 0.50 to 20.0 (Physical properties showing transparency) of the reflection chromaticity b * (0 to 1.0) obtained in accordance with JIS-Z8729 of a film formed by molding a resin composition for an inverse-wavelength-dispersion film to a thickness of 80 mu m is 0 to 1.0 Resin composition.

An inverse wavelength dispersive film is a film having a function of increasing the phase difference as the wavelength becomes longer.

The ether group is preferably an? Or? -Hydroxy ether group in view of saponification resistance, transparency, positive birefringence and inverse wavelength dispersion.

In the present invention, the modified polysaccharide (A) has an average molecular dispersion of 0.50 to 20.0 in all monosaccharide units constituting the modified polysaccharide (A).

The molecular dispersion of the monosaccharide unit is a value obtained by adding the value of atomic dispersion described in "Advances in Physical Organic Chemistry, 3, 1, 1965" to each bond in the unit per single unit as shown in the following formula (1).

Molecular dispersion of unit per single unit =? _I (i-th bond atom dispersion) (1)

The average molecular dispersion of the monosaccharide unit can be obtained by adding all of the molecular dispersions of the monosaccharide units constituting the modified polysaccharide (A) to the monosaccharide units constituting the modified polysaccharide (A) It is a value divided by the number and averaged.

Average molecular dispersion of monosaccharide unit = {? _N (molecular dispersion of nth unit per single unit)} / (number of units per unit in (A)) (2)

When the polysaccharide (A) is chemically modified with at least one compound selected from the group consisting of (y1) to (y5) which will be described later, the average molecular dispersion of the monosaccharide unit is preferably ¹ H- The value calculated by the following formula (3) using the modification ratio of the modified polysaccharide (A) determined by NMR is taken as the average molecular dispersion of the unit per single unit.

(Molecular dispersion of skeleton of single unit per single unit) + (molecular dispersion of functional group introduced by chemically modifying with? I (yi)} x (rate of modification to (yi)}] - [{hydroxyl group (OH) of molecular dispersion} × {the hydroxyl groups of the formulas rate}] - [{carboxylic group (C (= O) -OH) in the formula ratio of the molecular dispersion} × {carboxyl}] - {[amino (NH ₂₎ Molecular formula of amino group} x {rate of modification of amino group}] (Equation 3)

In Equation (3), (yi) represents (y1) to (y5).

Here, when the polysaccharide (a) is a substituted polysaccharide (for example, (a1) to (a3) described later), substituent introduction ratio DS suggested by each raw material maker is used, Lt; / RTI >

(Molecular dispersion of skeleton of monosaccharide unit constituting polysaccharide before substitution) + [(molecular dispersion of functional group introduced by substitution) 占 DS] - [(functional group before substitution by chemical modification ≪ / RTI > DS)

The modifying ratios of the hydroxyl group, carboxyl group and amino group to (y1) to (y5) are determined by the following measurement.

≪ Method for Measuring Modification Ratio of Hydroxyl Group, Carboxyl Group and Amino Group from (y1) to (y5)

¹ H-NMR of the modified polysaccharide (A) is measured under the following conditions and the functional group introduced by chemically modifying by the reaction of the polysaccharide (a) and (y1) to (y5) (Y1) to (y5) from the peak integral value derived from each of the hydroxyl group, carboxyl group and amino group in the polysaccharide (a) and the peak integral value derived from each of the hydroxyl group, carboxyl group and amino group in the polysaccharide (a).

For example, when methyl isocyanate is reacted as (y1) with cellulose as the polysaccharide (a), the functional group introduced by chemically modifying the hydroxyl group (-OH) in the cellulose is (-O-CO- CH ₃ ). The modification ratio is calculated from the following equation from the integral value of the hydrogen atom of the urethane group in the modified polysaccharide (A) and the integral value of the hydrogen atom derived from the hydroxyl group in the cellulose (3H per unit).

(Integral value of hydrogen atoms in the urethane group) / (integral value of hydrogen atoms in the urethane group) + (integral value of hydrogen atoms derived from the hydroxyl group in the cellulose) / 3}

Solvent: deuterated dimethylsulfoxide

Apparatus: AVANCE 300 (manufactured by Bruker K.K.)

Frequency: 300MHz

In the present invention, (A) has an average molecular dispersion of 0.50 to 20.0 in all monosaccharide units constituting (A), and is preferably 0.5 to 15.0, more preferably 0.5 to 10.0 , And further preferably 0.5 to 2.0.

The average molecular dispersion of all monosaccharide units constituting the polymer (A) is lowered by introducing a substituent having a bond having a small maximum absorption wavelength, and is increased by introducing a substituent having a bond having a maximum absorption maximum wavelength.

In the present invention, the absolute value of the reflection chromaticity b * obtained in accordance with JIS-Z8729 of a film formed by molding the resin composition for reversed wavelength dispersion film to a thickness of 80 mu m is 0 to 1.0. From the viewpoint of transparency, 0.5, more preferably 0 to 0.25, and particularly preferably 0 to 0.2.

The absolute value of the reflection chromaticity b * is lowered by reducing the amount of the aromatic isocyanate (aromatic polyisocyanate and aromatic monoisocyanate) used in the production of the later-described (A), and is increased by increasing the amount of the aromatic isocyanate used. Further, in the aromatic polyisocyanate and the aromatic monoisocyanate, it is also possible to reduce the reflection chromaticity b * by introducing a hydrocarbon group between the isocyanate group and the aromatic ring.

A film obtained by molding a resin composition for an inverse wavelength dispersion film to a thickness of 80 탆 is obtained from the resin composition for an inverted wavelength dispersion film by the following method.

First, the resin composition for the reverse wavelength dispersion film is dissolved in 1,3-dioxolane as an organic solvent so that the solid content is about 10%. A resin composition for an inverted-wavelength dispersing film dissolved in an organic solvent was applied to a PET (polyethylene terephthalate) film (for example, "Cosmo Shine" made by Toyobo Co., Ltd.) having a thickness of 120 탆 and subjected to surface treatment using an applicator To a thickness of 80 mu m. The coating material is dried at 80 DEG C for 2 hours. After drying, it is peeled off from the PET film and used for measuring the reflection chromaticity b *.

The modified polysaccharide (A) in the present invention is a polysaccharide having at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group possessed by the polysaccharide in the group consisting of ether group, urethane group, urea group, amide group and imide group And at least one functional group selected from the group consisting of

The modified polysaccharide (A) preferably has no (meth) acryloyl group from the viewpoint of reverse wavelength dispersion.

As the polysaccharide, conventionally known polysaccharides are included and can be used without particular limitation. Specifically, the following polysaccharide (a) is included.

Examples of the polysaccharide (a) include starch (including amylose and amylopectin), glycogen, cellulose, chitin, chitosan, agarose, carrageenan, heparin, hyaluronic acid, pectin, xyloglucan and xanthan gum, Urethane group, urea group, and polysaccharide substituted with other than amide group.

As the polysaccharide, one species may be used alone, or two or more species may be used in combination.

Examples of the substituted polysaccharide include substituted polysaccharides that are substituted. As the substituted polysaccharide, substituted cellulose known in the art is preferable from the viewpoints of birefringence, reverse wavelength dispersion and water resistance. Examples of the known substituted cellulose include acylated cellulose (a1), etherified cellulose (a2), and etherified acylated cellulose (a3).

The acylated cellulose (a1) includes acylated cellulose substituted with an acyl group having 2 to 19 carbon atoms which may partially be substituted with a hydroxyl group, and examples thereof include a reaction product of cellulose and a carboxylic acid or a lactone.

Examples of the carboxylic acid include those having 2 to 19 carbon atoms such as acetic acid, butyric acid, 2-ethylhexanoic acid, n-octyl acid, neodecanoic acid, dodecanoic acid, stearic acid, oleic acid, linolic acid, linolenic acid, And phthalic acid. The carboxylic acid may be an acid halide such as acid chloride {for example, F, Cl, Br, etc.) as the halogen. These may be used alone or in combination of two or more.

Examples of the lactone include those having 2 to 19 carbon atoms such as? -Lactone (? -Propiolactone, etc.),? -Lactone (? -Butyrolactone and the like),? -Lactone (? (Lactone), lactone (epsilon -caprolactone, etc.), dicyclohexyltin (enantlactone, undecanolactone, dodecaractone, etc.) and aromatic lactone (3,4-dihydrocoumarin). These may be used alone or in combination of two or more.

Examples of the acyl group having 2 to 19 which may be partially substituted by hydroxyl group, for example, acetyl group, propionyl group, butyryl group, valeryl group, benzoyl group, 6-hydroxy-hexahydro noilgi (HO-C ₅ H ₁₀ - CO-) and 3- (2-hydroxyphenyl) propionyl group.

(a1), specifically, triacetylcellulose, diacetylcellulose, acetylbutyrylcellulose, acetylpropionylcellulose, and acetyl 3- (2-hydroxyphenyl) propionylcellulose.

(a1), an acylated cellulose substituted with an acyl group having 2 to 19 carbon atoms which may be partially substituted with a hydroxyl group is preferable from the viewpoint of water resistance, more preferably an acetyl group, a propionyl group, a butyryl group, a valeryl group, Acylated cellulose having at least one functional group selected from the group consisting of a benzoyl group, a 6-hydroxyhexanoyl group (HO-C ₅ H ₁₀ -CO-) and a 3- (2-hydroxyphenyl) propionyl group , More preferably diacetylcellulose, acetyl 6-hydroxyhexanoylcellulose and acetyl 3- (2-hydroxyphenyl) propionylcellulose, and most preferably diacetylcellulose, acetylbenzoylcellulose, acetyl 6- Hydroxyhexanoyl cellulose and acetyl 3- (2-hydroxyphenyl) propionyl cellulose.

The etherified cellulose (a2) includes an etherified cellulose in which an alkyl group which is partially substituted by a hydroxyl group or a carboxyl group is substituted with an alkyl ether group having 1 to 18 carbon atoms.

Examples of the alkyl ether group include an alkyl ether group having 1 to 18 carbon atoms, which may be partially substituted with a hydroxyl group or a carboxyl group. Examples of the alkyl ether group include a methoxy group, an ethoxy group, a propoxy group, a hydroxymethoxy group, A methoxy group, a methoxy group, a methoxy group, a methoxy group, a methoxy group, a methoxy group, a methoxy group, a methoxy group, a methoxy group,

From the viewpoint of the water resistance, the alkyl ether group is preferably an alkyl ether group having 1 to 18 carbon atoms, which may be partially substituted with a hydroxyl group or a carboxyl group, more preferably a methoxy group, ethoxy group, propoxy group, Is at least one functional group selected from the group consisting of an alkyl group, an alkoxy group, a cyano group, a 1-phenylethoxy group, a 2-phenylethoxy group and a hydroxyethoxyl group.

(a2), which is specifically exemplified by methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxyethylmethylcellulose, 1-phenylethylcellulose, 2-phenylethylcellulose and carboxy Methyl cellulose and the like.

(a2), from the viewpoint of water resistance, alkyl etherified cellulose having 1 to 18 carbon atoms in the alkyl and oxyalkyl etherified cellulose having 1 to 18 carbon atoms in the alkyl group are preferable, and ethyl cellulose, (1-phenylethyl) ethylcellulose, (2-phenylethyl) ethylcellulose and methylcellulose, and most preferably ethylcellulose, (1-phenylethyl) ethylcellulose and (2-phenylethyl) ethylcellulose.

Examples of the etherified acylated cellulose (a3) include cellulose having an acyl group having 2 to 19 carbon atoms, which may be partially substituted with an alkyl ether group having 1 to 18 carbon atoms and an alkyl group partially substituted with a hydroxyl group or a carboxyl group Specific examples thereof include hydroxypropylmethylcellulose hexahydrophthalate, hydroxypropylmethylcellulose acetate phthalate, and hydroxypropylmethylcellulose acetate succinate.

Preferred examples of the ether group and the acyl group are the same as those of (a1) and (a2).

(a3), 1-phenylethylcellulose acetate, 2-phenylethylcellulose acetate, ethylcellulose benzoate, ethylcellulose 6-hydroxyhexanoate and ethylcellulose 3- (2-hydroxyphenyl) Propionate is preferred.

From the viewpoints of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion in the polysaccharide, the polysaccharide (a) is preferable, more preferably cellulose and substituted cellulose, and further preferably cellulose, acylation Cellulose (a1), etherified cellulose (a2) and etherified acylated cellulose (a3).

In the modified polysaccharide (A), at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group possessed by the polysaccharide is selected from the group consisting of an ether group, a urethane group, a urea group, an amide group and an imide group At least one monosaccharide unit selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group of the monosaccharide unit in at least one monosaccharide unit among the monosaccharide units constituting the polysaccharide, (I) wherein at least one functional group is chemically modified with at least one compound selected from the group consisting of an isocyanate compound (y1), an amino compound (y2), an acid halide compound (y3), an acid anhydride (y4) and an epoxy compound .

Examples of the isocyanate compound (y1) include a polyisocyanate compound (y11) having two or more isocyanate groups in one molecule of the compound and a monoisocyanate compound (y12) having one isocyanate group in one molecule of the compound.

(y11) include organic polyisocyanates generally used in the production of urethane resins, and examples thereof include aromatic polyisocyanates, chain aliphatic polyisocyanates, alicyclic polyisocyanates, aromatic aliphatic polyisocyanates, and modified products thereof (urethane groups , A carbodiimide group, an allophanate group, a urea group, a biuret group, an isocyanurate group, and an oxazolidinone-modified product). (y11) may be used alone or in combination of two or more.

Examples of the aromatic polyisocyanate include an aromatic diisocyanate having a carbon number of 6 to 16 (as well as a polyisocyanate other than carbon in the NCO group), an aromatic triisocyanate having 6 to 20 carbon atoms, and a preparation of these isocyanates. Specific examples thereof include 1,3- or 1,4-phenylene diisocyanate, 2,4- or 2,6-tolylene diisocyanate (TDI), crude TDI, 2,4'-diphenylmethane diisocyanate, 4,4 ' Diphenylmethane diisocyanate (MDI), polymethylene polyphenylene polyisocyanate (prepared MDI), naphthylene-1,5-diisocyanate and triphenylmethane-4,4 ', 4 "-triisocyanate. have.

Examples of the chain aliphatic polyisocyanate include chain aliphatic diisocyanates having 1 to 10 carbon atoms in the aliphatic group (1,6-hexamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, lysine diisocyanate, etc.) .

As the alicyclic polyisocyanate, alicyclic diisocyanates having 6 to 16 carbon atoms (isophorone diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate, norbornadiisocyanate and bis -Isocyanatoethyl) -4-cyclohexene-1,2-dicarboxylate), and the like.

Examples of the aromatic aliphatic polyisocyanate include aromatic aliphatic diisocyanates having 8 to 12 carbon atoms (e.g., xylylene isocyanate and?,?,? ',?' - tetramethyl xylylene diisocyanate).

Specific examples of the modified polyisocyanate include carbodiimide-modified MDI.

(y11), a chain aliphatic polyisocyanate is preferable from the viewpoints of saponification resistance, transparency, positive birefringence and inverse wavelength dispersion.

When the modified polysaccharide (A) is produced using the compound (y11), a compound (z) having at least one active hydrogen group may be used.

(z) includes a compound having at least one active hydrogen group having 4 to 100 carbon atoms.

Examples of the active hydrogen group include a hydroxyl group, an amino group, a carboxyl group, a thiol group, and a phosphoric acid group.

(methanol, ethanol, n-propanol, n-butanol, n-octanol and phenol and the like), those having an amino group {ethylamine, etc.}, those having a carboxyl group Those having a thiol group such as formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, lauric acid, myristic acid, stearic acid and behenic acid} {Octanethiol, etc.} and those having a phosphoric group {the reaction product of the above hydroxyl group (such as methanol) with anhydrous phosphoric acid}.

(z) may be used alone or in combination of two or more.

(z), a compound having a hydroxyl group of 4 to 100 carbon atoms is preferable from the viewpoints of surface hardness, resin strength, elongation at break, flexibility and positive birefringence, more preferably a hydroxyl group having 4 to 10 carbon atoms ≪ / RTI >

(y12) include reaction products of aromatic monoisocyanate, alkyl monoisocyanate, alicyclic monoisocyanate, and diisocyanate compound and a compound having one active hydrogen group at a molar ratio of 1: 1.

Examples of the aromatic monoisocyanate include an aromatic monoisocyanate having 6 to 20 carbon atoms (excluding carbon in the NCO group, the same applies hereinafter). Specific examples thereof include phenylisocyanate, tolylene isocyanate, xylylene isocyanate, ,? '- tetramethyl xylylene isocyanate, and naphthylene isocyanate.

Examples of the alkyl monoisocyanate include alkyl (straight chain or branched) mono isocyanates having 1 to 100 carbon atoms, and specifically, those having 1 to 18 carbon atoms such as methyl isocyanate, ethyl isocyanate, n-propyl isocyanate, n-butyl isocyanate, sec -Butyl isocyanate, t-butyl isocyanate, n-hexyl isocyanate, 2-ethylhexyl isocyanate, n-octyl isocyanate, n-dodecyl isocyanate, n-stearyl isocyanate and the like. As the alkyl monoisocyanate, those having 1 to 18 carbon atoms are preferable from the viewpoints of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion.

The alicyclic monoisocyanate includes an alicyclic monoisocyanate having 4 to 15 carbon atoms and specifically includes cyclobutyl isocyanate, cyclohexyl isocyanate, cyclooctyl isocyanate, cyclododecyl isocyanate, cyclododecyl isocyanate, cyclotetradecyl isocyanate, cyclo Tetradecyl isocyanate, isophorone isocyanate, dicyclohexylmethane-4-isocyanate, cyclohexyl isocyanate, methylcyclohexyl isocyanate, and norbornane isocyanate.

In the reaction product of the diisocyanate compound and the compound having one active hydrogen group at a molar ratio of 1: 1, the diisocyanate compound includes a diisocyanate compound having two isocyanate groups in (y11), specifically, an aromatic diisocyanate (TDI), crude TDI, 2,4'-diphenylmethane diisocyanate, 4,4'-di (tert-butyldimethylsilyl) diisocyanate, Phenylmethane diisocyanate (MDI) and naphthylene-1,5-diisocyanate}, alkyl (straight or branched) diisocyanate {1,6-hexamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate and Lysine diisocyanate, etc.}, alicyclic diisocyanates {isophorone diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate and norbornadiene Cyano and the like carbonate, etc.] and aromatic aliphatic diisocyanate {xylylene diisocyanate and α, α, α ', α'- tetramethyl-xylylene diisocyanate, etc}.

Examples of the compound having one active hydrogen group include compounds having one active hydrogen group in the compound (z), and specific examples thereof include monoalcohols having 1 to 100 carbon atoms (methanol, ethanol, n-propanol, monohydric alcohols having 1 to 10 carbon atoms, such as n-butanol, n-octanol and phenol, from the viewpoint of surface hardness, resin strength, elongation at break, flexibility and positive birefringence}, monoamines having 1 to 100 carbon atoms Amines and the like}, monovalent carboxylic acids having 1 to 100 carbon atoms {formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, caproic acid, enantic acid, caprylic acid, pelargonic acid, , Stearic acid, behenic acid, etc.}.

the alkyl monoisocyanate and the alicyclic monoisocyanate are preferable from the viewpoints of the saponification treatment property, transparency, surface hardness, resin strength, elongation at break, flexibility and positive birefringence of the alkyl group (y12) Particularly preferably methyl isocyanate, ethyl isocyanate, n-propyl isocyanate, n-butyl isocyanate, sec-butyl isocyanate, t-butyl isocyanate, n-butyl isocyanate and n-butyl isocyanate. -Hexyl isocyanate, cyclohexyl isocyanate, 2-ethylhexyl isocyanate, n-octyl isocyanate, n-dodecyl isocyanate and n-stearyl isocyanate.

(y1) may be used alone or in combination of two or more.

(y12) is preferable from the viewpoints of the saponification treatment property, transparency, surface hardness, resin strength, elongation at break, flexibility and positive birefringence of the monoisocyanate compound (y1), more preferably the alkyl monoisocyanate compound More preferably an alkyl monoisocyanate having 1 to 18 carbon atoms of alkyl and an alicyclic monoisocyanate having 4 to 15 carbon atoms, particularly preferably methyl isocyanate, ethyl isocyanate, n-propyl isocyanate, n-butyl Butyl isocyanate, n-hexyl isocyanate, cyclohexyl isocyanate, 2-ethylhexyl isocyanate, n-octyl isocyanate, n-dodecyl isocyanate and n-stearyl isocyanate.

Examples of the amino compound (y2) include ammonia, a primary amine and a secondary amine.

Examples of the primary amine include monoamines having 1 to 20 carbon atoms (alkyl (linear or branched) monoamine, alicyclic monoamine, aromatic aliphatic monoamine, aromatic monoamine and alkanolamine} and polyamines having 1 to 20 carbon atoms And triamine, etc.}.

Examples of the monoamine include alkyl monoamines {monoalkyl (alkyl having 1 to 20 carbon atoms) amine (e.g. methylamine, ethylamine, n-butylamine and octylamine)}, alicyclic monoamine { (For example, benzylamine and the like), aromatic amines (for example, aniline, toluidine and naphthylamine), and alkanolamines (monoalkanolamines such as Containing 1 to 20 carbon atoms, and examples thereof include ethanolamine, etc.)} and the like.

Examples of the secondary amine include an amine having a hydrocarbon group having 1 to 20 carbon atoms and / or a hydroxyalkyl group having 1 to 20 carbon atoms.

Examples of the hydrocarbon group include an alkyl group (straight chain or branched) (such as a methyl group, an ethyl group and a propyl group), an alicyclic group (a cyclohexyl group and the like), and aromatic hydrocarbons (such as a phenyl group and a naphthyl group).

Specific examples of the secondary amine include dimethylamine, diethylamine, ethylmethylamine, diethanolamine, and the like.

(y2) may be used alone or in combination of two or more.

(y2), alkyl monoamines and alicyclic monoamines are preferred from the viewpoints of saponification resistance, transparency, surface hardness, resin strength, elongation at break, flexibility and positive birefringence.

Examples of the acid halide compound (y3) include a carboxylic acid halide (acyl halide) having 1 to 20 carbon atoms, and specific examples of the carboxylic acid include aliphatic monocarboxylic acids having 1 to 20 carbon atoms (formic acid, acetic acid, (Such as benzoic acid, neopentylsuccinic acid, benzoic acid, benzoic acid, benzoic acid, benzoic acid, and the like) having 7 to 20 carbon atoms, Succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, and sebacic acid) having 3 to 20 carbon atoms and aliphatic polycarboxylic acids having 3 to 20 carbon atoms (such as oxalic acid, (Such as phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid and pyromellitic acid), and the like.

Halides include fluorides, chlorides, bromides and iodides.

(y3) may be used alone or in combination of two or more.

an aliphatic monocarboxylic acid halide having 1 to 20 carbon atoms is preferable from the viewpoint of saponification resistance, transparency, surface hardness, resin strength, elongation at break, flexibility and positive birefringence.

Examples of the acid anhydride (y4) include a compound having 3 to 20 carbon atoms and a 1,3-dioxo-2-oxaalkylene group, and include dicarboxylic acid {aliphatic dicarboxylic acid (succinic acid, adipic acid, azelaic acid , Sebacic acid, maleic acid, etc.) and aromatic dicarboxylic acids (such as phthalic acid)} and the like.

(y4) may be used alone or in combination of two or more.

(y4), an acid anhydride of an aliphatic dicarboxylic acid is preferable from the viewpoints of saponification resistance, transparency, surface hardness, resin strength, elongation at break, flexibility and positive birefringence.

Examples of the epoxy compound (y5) include an aromatic compound (y51) having an epoxy group and other epoxy compounds (y52).

Since the epoxy compound (y5) is chemically modified with the epoxy compound (y5) to bind the polysaccharide (a) with an? Or? -Hydroxyether bond and the side chain is aligned by the influence of the hydroxyl group, (2) to (a3), etc.) as described above, and has excellent saponification resistance and transparency. Further, in the usual etherified polysaccharide (the above-mentioned (a2) to (a3)), the average molecular dispersion of the unit per single unit can not be made within the above range, but by bonding with an? Or? -Hydroxyether bond, The average molecular dispersion may be within the above range.

(y51) includes the following aromatic compound (B). When the following aromatic compound (B) is used, since the side chains are regularly aligned by the directional ring interaction of side chains, the positive birefringence and the reverse wavelength dispersion are superior

Aromatic compound (B): an aromatic compound (b1) in which one hydrogen atom in an aromatic ring is substituted with an epoxy group, an aromatic compound (b2) in which one hydrogen atom in the aromatic ring is substituted with an epoxy alkyl group having 3 to 8 carbon atoms in the alkyl group, and (B3) in which one hydrogen atom in the aromatic ring is an epoxy alkyl group having 3 to 8 carbon atoms in which at least one carbon atom of the alkyl is substituted with an oxygen atom, / RTI >

Examples of the aromatic ring in the aromatic compound (B) include rings having a ring structure only (benzene ring and naphthalene ring and the like) and heterocyclic rings containing an element other than carbon in the ring structure {furan, thiophene, pyrrole and imidazole Etc.).

From the viewpoint of the aromatic ring, the birefringence, the reverse wavelength dispersion and the water resistance, an aromatic ring having a ring structure consisting only of carbon is preferable, and a benzene ring is more preferable.

In the case of (B), one hydrogen atom in the aromatic ring may be substituted with an epoxy group or the like {an epoxy group, an epoxy alkyl group having 3 to 8 carbon atoms in the alkyl group and an epoxy alkyl ether group having 3 to 8 carbon atoms} The hydrogen atom may be substituted with another functional group (x) other than an epoxy group.

Examples of the other functional group (x) include a halogeno group (F, Cl, Br and I), a hydroxyl group, an amino group, an oxyalkyl group having 1 to 8 carbon atoms in the alkyl group or an alkylamino group having 1 to 8 carbon atoms in the alkyl group .

Further, in (B), a plurality of aromatic rings may be bonded to the epoxy group and the epoxy alkyl group.

Specific examples of the aromatic compound (b1) in which one hydrogen atom in the aromatic ring is substituted with an epoxy group include styrene oxide, 2- (4-chlorophenyl) oxirane, 2- - (4-bromophenyl) oxirane, and 2,3-diphenyloxirane.

Specific examples of the aromatic compound (b2) in which one hydrogen atom in the aromatic ring is substituted with an epoxy alkyl group having 3 to 8 carbon atoms in the alkyl group include 2-benzyloxirane and the like.

In the epoxy alkyl group having 1 to 6 carbon atoms of alkyl, the aromatic compound (b3) substituted with a functional group in which at least one carbon atom of the alkyl is substituted with an oxygen atom, specifically, benzyl glycidyl ether, glycidyltryl 2-oxiranylmethyl ether, 2 - [(2-naphthyloxy) methyl] oxirane, 4-chlorophenyl-2-oxiranylmethyl 2 - [(2-methylphenoxy) methyl] oxirane, 2- {[ Methyl] oxirane, 2 - [(4-bromophenoxy) methyl] oxirane, 4- [ Methylphenyl-2-oxiranyl methyl ether, 2- (2-oxiranylmethoxy) benzonitrile and 2 - [(benzyloxy) methyl] oxirane.

(y51) is preferably an aromatic compound (B), more preferably an aromatic compound in which one hydrogen atom in the aromatic ring is substituted with an epoxy group (in terms of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion) b1), and particularly preferably styrene oxide.

(y52) include an epoxy compound having an epoxy group and having no aromatic ring and having 2 to 20 carbon atoms, and specific examples thereof include ethylene oxide, a non-cyclic aliphatic epoxy compound having 3 to 20 carbon atoms { (3,4-epoxycyclohexyl) methyl-3 ', 4' -dicyclohexylidene}, alicyclic epoxy compound {limonene dioxide, di (3,4-epoxycyclohexyl) adipate, Epoxy cyclohexanecarboxylate, (3,4-epoxy-6-methylcyclohexyl) methyl-3 ', 4'-epoxy-6-methylcyclohexanecarboxylate and ethylene- 4-epoxycyclohexanecarboxylic acid) ester} and the like.

(y5) may be used alone or in combination of two or more.

Among the epoxy compounds (y5), the aromatic compound (y51) having an epoxy group is preferable from the viewpoints of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion, more preferably aromatic compound (B) More preferably, the aromatic compound (b1) in which one hydrogen atom in the aromatic ring is substituted with an epoxy group is particularly preferable, and styrene oxide is particularly preferable.

The modified polysaccharide (A) is at least one selected from the group consisting of the polysaccharide (a) and the isocyanate compound (y1), the amino compound (y2), the acid halide compound (y3), the acid anhydride (y4) ≪ / RTI > and the like.

In the case of producing the modified polysaccharide (A) by using the polysaccharide (a) and the isocyanate compound (y1), a known polysaccharide (A) is produced by reacting a compound having at least one kind selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group with an isocyanate compound Method can be used.

When preparing the modified polysaccharide (A) by using the polysaccharide (a) and the amino compound (y2), a known method of reacting an amino compound with a compound having a carboxyl group to obtain an amide compound can be used.

When preparing the modified polysaccharide (A) by using the polysaccharide (a) and the acid halide compound (y3), a known method of reacting a compound having an amino group with an acid halide compound to obtain an imide compound can be used.

When a polysaccharide (A) is produced by using the polysaccharide (a) and the acid anhydride (y4), a known method of reacting the compound having an amino group with an acid anhydride to obtain an amide compound and / or an imide compound is used .

When a polysaccharide (A) is produced by using the polysaccharide (a) and the epoxy compound (y5), a compound having a hydroxyl group and an epoxy compound are reacted to obtain a compound having an? And / or? A known method can be used.

From the viewpoints of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion in the modified polysaccharide (A), the polysaccharide is the polysaccharide (a), and at least one of the monosaccharide units constituting the polysaccharide is represented by the following formulas (6), a modified polysaccharide (A1) containing at least one substituent represented by the following formula (7), and a polysaccharide (a), wherein the polysaccharide (a) is at least one selected from the group consisting of (A2) in which at least one hydroxyl group is chemically modified with the aromatic compound (B) having an epoxy group is preferable.

Wherein X ¹ to X ¹³ are each independently a hydrogen atom or a substituent represented by the following formula (7); At least one of X ¹ to X ³ is a substituent represented by the following formula (7); At least one of X ⁴ to X ⁶ is a substituent represented by the following formula (7); At least one of X ⁷ and X ⁸ is a substituent represented by the following formula (7); At least one of X ¹⁰ and X ¹¹ is a substituent represented by the following formula (7); At least one of X ¹² and X ¹³ is a substituent represented by the following formula (7); Y is an oxygen atom or NH group, and Z is a hydroxyl group or a substituent represented by (8).

(7)

(7)

Wherein R ¹ is a hydrogen atom or a monovalent hydrocarbon group of 1 to 18 carbon atoms; * Indicates that the substituent represented by the formula (7) is bonded to the oxygen atom and / or the nitrogen atom adjacent to X in the above formulas (1) to (6) by the bond to which they are attached.

(8)

(8)

Wherein R ² is a monovalent hydrocarbon group or alkyl polyoxyalkylene group having 1 to 18 carbon atoms; * Indicates that the substituent represented by the formula (8) is bonded to the carbon atom adjacent to Z in the formula (5) by the bond to which it is attached.

(1) or (6), and more preferred is the formula (1), from the viewpoints of surface hardness, adhesion, and flexibility of the structures represented by the general formulas (1) to (6) in the general formula (A1).

In the formulas (7) and (8), preferable R ¹ and R ² are hydrocarbon groups of 1 to 18 carbon atoms from the viewpoints of surface hardness, adhesion and flexibility. Particularly preferable R ¹ and R ² are each independently methyl group N-butyl group, t-butyl group, n-hexyl group, cyclohexyl group, 2-ethylhexyl group, n-octyl group, n- Stearyl group.

From the viewpoints of colorability, transparency, saponification resistance, positive birefringence and inverse wavelength dispersion, the modified polysaccharide (A1) has a total amount of urethane groups, urea groups, amide groups and imide groups obtained by the following formula (1) More preferably 0.04 to 3, still more preferably 0.06 to 2, and particularly preferably 0.11 to 1.4.

Total introduction ratio of urethane group, urea group, amide group and imide group = P / T '(1)

P: Formula polysaccharide monosaccharide unit NMR integrals of the hydrogen atom of a hydroxyl group, a carboxyl group and an amino group is chemically modified with a urethane having group constituting the (A1) (P _1), NMR integrals of the hydrogen atoms of the urea group (P ₂ ) obtained by applying the NMR integration value (P ₃ ) of the hydrogen atom of the amide group and the NMR integration value (P ₄ ) of the hydrogen atom of the imide group to the following equation (2)

_{P = P 1 + P 2/} 2 + P 3 + P 4 (2)

In the case where the amide group is not a {-C (= O) -NH- R (R is other than a hydrogen atom)} (-C (= O) -NH 2) is, and the P ₃ to P _3/2.

T ': the NMR integral value of the hydrogen atom directly bonded to the carbon atom at the 4th position of the unit per unit constituting the modified polysaccharide (A1)

<Method for measuring the total introduction ratio of urethane group, urea group, amide group and imide group>

Solvent: deuterated dimethylsulfoxide

Apparatus: AVANCE 300 (manufactured by Bruker K.K.)

Frequency: 300MHz

When the introduction ratio is greater than 0.01, transparency, saponification resistance, and reverse wavelength dispersion are better, and when the introduction ratio is 3 or less, the definition birefringence is better.

The modified polysaccharide (A2) is a polysaccharide in which the polysaccharide (a) is a chemically modified polysaccharide, and at least one of the hydroxyl groups in (a) is chemically modified with the following aromatic compound (B) having an epoxy group.

Aromatic compound (B): an aromatic compound (b1) in which one hydrogen atom in an aromatic ring is substituted with an epoxy group, an aromatic compound (b2) in which the alkyl is substituted with an epoxy alkyl group having 3 to 8 carbon atoms, An aromatic compound (b3) in which at least one carbon atom in the alkyl group is substituted with an oxygen atom-substituted functional group, at least one kind of compound selected from the group consisting of

Preferred as the aromatic compound (B) are as described above.

In the modified polysaccharide (A2), the ratio of the functional group chemically modified with the aromatic compound (B) in the hydroxyl group in the polysaccharide (a) is the ratio of the number of hydroxyl groups in the polysaccharide (a) From the viewpoint of acidity and water resistance, it is preferably 30 to 100%, more preferably 60 to 100%.

The ratio of chemically modified functional groups can be determined by ¹ H-NMR. Specifically, it is measured by the following measurement method.

<Method for measuring the ratio of functional groups chemically modified with (B)>

¹ H-NMR of the polysaccharide (a) and the modified polysaccharide (A2) before the modification is measured. (%) Of the functional group modified by (B) is calculated by applying the following integral value obtained from each measurement result to the following equation (3).

(%) = {(T-S) / T} × 100 (3)

S = the integral value of the hydrogen atom of the hydroxyl group of the modified polysaccharide (A2)

T = integral value of the hydrogen atom of the hydroxyl group of the polysaccharide (a)

Solvent: deuterated dimethylsulfoxide

Apparatus: AVANCE 300 (manufactured by Bruker K.K.)

Frequency: 300MHz

The aromatic ring concentration in the modified polysaccharide (A2) is preferably from 20 to 80% by weight, more preferably from 25 to 70% by weight, and still more preferably from 20 to 80% by weight, from the viewpoints of colorability, high birefringence and inverse wavelength dispersion By weight is from 30 to 65% by weight.

The aromatic ring concentration is measured by the following measurement method.

&Lt; Measurement of aromatic ring concentration >

¹ H-NMR of the polysaccharide (a) and the modified polysaccharide (A2) before the modification is measured. (% By weight) of the modified polysaccharide (A2) is calculated by applying the following integral value obtained from each measurement result to the following equation (4).

(%) = {U x W / (U x W + V)} x 100 (4)

U = (integral value of one hydrogen atom in the structure of the aromatic compound (B)) x (number of aromatic rings in the aromatic compound (B)) x 5 / (monosaccharide constituting the modified polysaccharide The sum of the integral values of the hydrogen atoms bonded to the 5th carbon)

V = molecular weight of the monosaccharide constituting the polysaccharide (a)

W = molecular weight of the aromatic compound (B)

Solvent: deuterated dimethylsulfoxide

Apparatus: AVANCE 300 (manufactured by Bruker K.K.)

Frequency: 300MHz

The molecular weight (number average molecular weight (Mn), molecular weight in the case of a single compound) of the modified polysaccharide (A) is preferably in the range of 3,000 to 5,000, from the viewpoints of heat resistance and adhesion of the solvent- More preferably from 3,500 to 6,000,000, and particularly preferably from 4,000 to 5,000,000.

The number average molecular weight (Mn) in the present invention is measured under the following conditions.

Apparatus: gel permeation chromatography

Solvent: N, N-dimethylformamide

Reference substance: polystyrene

Sample concentration: 3 mg / ml

Column fixed bed: PLgel MIXED-B

Column temperature: 40 DEG C

The resin composition for a reverse wavelength dispersion film of the present invention may contain esterified cellulose (C). Since the modified polysaccharide (A) has a very high reverse-wavelength dispersibility, the reverse-wavelength dispersibility can be appropriately adjusted by containing (C) having a low reverse-wavelength dispersibility.

Examples of the esterified cellulose (C) in the present invention include known esterified cellulose, and include, for example, alkyl esterified cellulose (having 1 to 18 carbon atoms in the alkyl group) For example, an acetate group, a propionate group and a butyrate group. (C) may be used singly or in combination of two or more.

From the viewpoints of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion, the esterification rate (average number of hydroxyl groups directly bonded to cellulose per cellulose per ester unit) of the esterified cellulose (C) .

The esterification rate of the esterified cellulose is determined by NMR.

The Mn of the esterified cellulose (C) is preferably from 300 to 10 million, more preferably from 500 to 800,000 from the viewpoints of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion.

Among these (C), alkylesterified cellulose having 1 to 18 carbon atoms is preferable from the viewpoint of inverse wavelength dispersion, more preferably at least one ester selected from the group consisting of acetate group, propionate group and butyrate group And more preferably cellulose acetate, cellulose butyrate, cellulose propionate, cellulose acetate propionate, and cellulose acetate butyrate.

When the esterified cellulose (C) is contained in the resin composition for reversed wavelength dispersion film of the present invention, the content of the modified polysaccharide (A) in the resin composition for reversed wavelength dispersing film is preferably in the range of Is preferably from 1 to 99.9% by weight, more preferably from 3 to 95% by weight, based on the total weight of (A) and (C),

When the esterified cellulose (C) is contained in the resin composition for reversed wavelength dispersing film of the present invention, the content of the esterified cellulose (C) in the resin composition for reversed wavelength dispersion film is preferably in the range of Is preferably from 0.1 to 99% by weight, more preferably from 5 to 97% by weight, from the viewpoints of transparency, saponification resistance, positive birefringence and inverse wavelength dispersion on the basis of the total weight.

The resin composition for an inverse wavelength-dispersive film of the present invention may contain an organic solvent, a leveling agent and the like if necessary.

Examples of the organic solvent include glycol ethers such as ethylene glycol monoalkyl ether and propylene glycol monoalkyl ether, ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone, esters such as ethyl acetate, butyl acetate, Alkyl ether acetates, methyl lactate and propylene glycol alkyl ether acetates), aromatic hydrocarbons (toluene, xylene and mesitylene), alcohols (methanol, ethanol, normal propanol, isopropanol, butanol, geraniol, (N, N-dimethylacetamide and N, N-dimethylformamide), sulfoxides (dimethylsulfoxide) and ethers (tetrahydrofuran, 1,3-dioxane, Oxane, 1,3-dioxolane, and 1,8-cineol), and the like. These may be used singly or in combination of two or more species.

The amount of the organic solvent to be added is preferably 0 to 400% by weight, more preferably 3 to 350% by weight, based on the weight of the resin composition for reversed wavelength dispersing film, from the viewpoints of moldability and viscosity of the resin composition for reversed wavelength dispersion film By weight, particularly preferably 5 to 300% by weight.

Examples of the leveling agent include a fluorine-based leveling agent (such as a perfluoroalkylethylene oxide adduct) and a silicon-based leveling agent (such as aminopolyether-modified silicone, methoxy-modified silicone, and polyether-modified silicone). The amount of the leveling agent to be added is preferably 0 to 20% by weight, more preferably 0.05 to 10% by weight, particularly preferably 0.1 to 5% by weight in view of the effect of addition and transparency to the weight of the resin composition for reversed wavelength dispersing film Weight%.

The resin composition for an inverse wavelength-dispersive film of the present invention may further contain an antistatic agent such as an inorganic fine particle, a dispersant, a defoamer, a thixotropic property-imparting agent, a slip agent, a flame retardant, an antistatic agent, an antioxidant, Known additives that can be added to the film composition may be added. Specifically, those described in a known document (Japanese Patent Laid-Open Publication No. 2012-088408, etc.) and the like can be given.

The resin composition for an inverse wavelength-dispersive film of the present invention is a resin composition comprising a modified polysaccharide (A) having at least one selected from the group consisting of an ether group, a urethane group, a urea group, an amide group and an imide group, Cellulose (C), an organic solvent and other components by a disperser or the like. The mixing temperature is usually from 10 캜 to 40 캜, preferably from 20 캜 to 30 캜.

In the resin composition for the reverse wavelength dispersion film of the present invention, a pigment conventionally used in paints and inks can be added. The amount of the pigment to be added is preferably 0 to 300% by weight, more preferably 0 to 200% by weight, based on the weight of the resin composition for reversed wavelength dispersing film, from the viewpoint of the hiding power.

Examples of pigments include chrome, zinc, cadmium, barium sulfate, cadmium red, titanium oxide, zinc oxide, iron oxide, alumina, calcium carbonate, group black, carbon black, graphite and titanium black.

When a pigment is used in the resin composition for an inverse wavelength-dispersive film of the present invention, a pigment dispersant may be added in order to improve the dispersibility and the storage stability of the resin composition for reversed wavelength dispersing film.

As the pigment dispersant, a pigment dispersant (Anti-Terra-U, Disperbyk-101, 103, 106, 110, 161, 162, 164, 166, 167, 168, 170, 174, 182, 184, Pigment dispersants (azersper PB711, PB821, PB814, PN411 and PA111 etc.) manufactured by Ajinomoto Fine Techno Co., Ltd. and pigment dispersants (Sol Spurs 5000, 12000, 32000, 33000 and 39000, etc.) manufactured by Lubrizol.

These pigment dispersants may be used singly or in combination of two or more.

The addition amount of the pigment dispersant is preferably from 0 to 20% by weight, more preferably from 0 to 10% by weight, from the viewpoint of the hiding power to the weight of the resin composition for reversed wavelength dispersing film.

Examples of the application method of the resin composition for reversed wavelength dispersing film of the present invention to an organic solvent include an organic solvent, Known printing methods such as printing, screen printing and intaglio printing can be applied. In addition, application of an ink jet system in which fine droplets are continuously discharged can also be applied.

The applied film thickness is preferably 0.5 to 300 占 퐉, more preferably 1 to 250 占 퐉, from the viewpoints of dryness, abrasion resistance, solvent resistance and stain resistance, as a film thickness after drying.

When the resin composition for reversed wavelength dispersing film of the present invention contains an organic solvent, it is preferable to dry it after application. As the drying method, for example, hot air drying (such as a dryer) can be mentioned. The drying temperature is usually 10 to 200 占 폚, the upper limit is preferably 150 占 폚 in terms of smoothness and appearance of the coating film, and the lower limit is preferably 30 占 폚 in view of the drying speed.

When the resin composition for the reverse wavelength dispersion film does not contain an organic solvent, it may be melt-mixed. The film and the sheet may be molded by injection molding, compression molding, calender molding, slush molding, rotary molding, extrusion molding, blow molding, film molding (casting, tentering, inflation, etc.) .

The reverse wavelength dispersion film and sheet of the present invention are preferably transparent.

The haze value of the reverse wavelength dispersion film and sheet is preferably 3% or less from the viewpoint of transparency.

The total light transmittance of the retardation film and the sheet is preferably 85% or more from the viewpoints of colorability and transparency.

The retardation film and sheet of the present invention can be produced by forming a film or sheet containing the above resin composition for reversed wavelength dispersion film, or by stretching it after molding. As the molding method of the film and the sheet, the above-mentioned method is used.

The retardation film and sheet of the present invention are preferably transparent.

The haze value of the retardation film and the sheet is preferably 3% or less from the viewpoint of transparency.

The total light transmittance of the retardation film and the sheet is preferably 85% or more from the viewpoints of colorability and transparency.

The circularly polarizing film and sheet of the present invention can be produced by a known melt film forming method or a cast film forming method.

The circular polarizing film and sheet of the present invention are preferably transparent.

The haze value of the circular polarizing film and the sheet is preferably 3% or less from the viewpoint of transparency.

The total light transmittance of the circular polarizing film and the sheet is preferably 85% or more from the viewpoints of colorability and transparency.

Example

Hereinafter, the present invention will be further described by way of examples, but the present invention is not limited thereto. Unless otherwise specified,% represents weight%, and parts represent parts by weight.

&Lt; Production Examples 1 to 51 and Comparative Production Examples 1 to 32 >

[Synthesis of modified polysaccharide (A)] [

The polysaccharide and dimethylacetamide (150 parts) described in Tables 1 to 5 or Tables 7 to 9 were placed in a reaction vessel equipped with a stirrer, a heating and cooling device and a thermometer and stirred at 150 DEG C for 1 hour. After cooling to 100 ° C, 15 parts of lithium chloride and 0.1 part of dibutyltin dilaurate were added to the reaction solution, and the mixture was stirred for 24 hours while maintaining the temperature at 100 ± 20 ° C. Thereafter, the reaction mixture was cooled to 0 ° C and 100 parts of pyridine was added to the reaction solution, and the compound (y1) or (y) 'was added as shown in Tables 1 to 5 or Tables 7 to 9, and the temperature was maintained at 0 ± 5 ° C And stirred for 2 hours. The reaction solution is added to 2000 parts of water and the precipitate is collected by filtration, washed with 2000 parts of water and dried under reduced pressure at 100 ° C for 20 hours to obtain the modified polysaccharides (A-1) to (A-51) and comparative polysaccharides (A'-1) to (A'-32).

&Lt; Production Examples 52 to 61 >

[Synthesis of modified polysaccharide (A)] [

The polysaccharide (a) and the aromatic compound (B) were added to 150 parts of water as shown in Table 6 and stirred at 80 캜 for 2 hours. Thereafter, 15 parts of sodium hydroxide was added, and the mixture was stirred for 12 hours while maintaining the temperature at 80 占 폚. After 20 parts of acetic acid was added to the reaction solution to neutralize it, the white precipitate was filtered out (filter paper: ADVANTEC; No. 5), and washed with 200 parts of toluene three times. The modified polysaccharides (A-52) to (A-61) described in Table 6 were obtained by drying under reduced pressure at 100 占 폚 for 3 hours.

In Table 5, (a'1) to (a'8) used in the following Production Examples 62 to 69 were used.

<Production Example 62>

[Reaction product of benzoic acid chloride and acetylcellulose (a'1) {acetylbenzoylcellulose}]

5 parts of acetyl cellulose ("Cellulose L-20" manufactured by Daicel Co., Ltd.) was added to 100 parts of toluene, and the mixture was stirred at 80 ° C for 1 hour. After cooling to 25 ° C, 3 parts of benzoyl chloride ("B0105" manufactured by Tokyo Kasei Kogyo Co., Ltd.) and 0.02 part of triethylamine were added to the reaction solution, and the mixture was stirred for 5 hours while maintaining the temperature at 80 ± 10 ° C. Thereafter, the reaction mixture was cooled to 25 DEG C and the reaction solution was added to 500 parts of acetone. The white solid precipitated was collected by filtration and washed with 1000 parts of acetone. The reaction product (a'1) of benzoyl chloride and acetylcellulose was obtained by drying under reduced pressure at 40 DEG C for 3 hours.

<Production Example 63>

[Reaction product of benzoic acid chloride and ethylcellulose (a'2) {ethylcellulose benzoate]]

5 parts of acetyl cellulose ("ACETIC ACID L-20", manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) was changed to "3.5 parts of ethyl cellulose (" ETOCEL 10cps "manufactured by DOW CHEMICAL CO., LTD. , A reaction product (a'2) of benzoyl chloride and ethyl cellulose was obtained in the same manner as in Example 1,

&Lt; Production Example 64 >

[Reaction product of styrene and acetylcellulose (a'3) {1-phenylethylcellulose acetate and 2-phenylethylcellulose acetate}]

5 parts of acetyl cellulose ("Cellulose L-20," manufactured by Daicel Chemical Co., Ltd.) was added to 100 parts of toluene, and the mixture was stirred at 80 ° C for 1 hour under nitrogen reflux. After 0.02 part of azobisisobutyronitrile (AIBN) was added to the reaction solution, 5 parts of styrene was added dropwise over 3 hours, and the mixture was stirred for 12 hours while maintaining 80 ° C ± 10 ° C. Thereafter, the reaction solution was added to hexane (500 parts), and the white precipitate was filtered off and washed with 1000 parts of hexane. The reaction product (a'3) of styrene and acetylcellulose was obtained by drying under reduced pressure at 60 DEG C for 3 hours.

<Production Example 65>

[Reaction product of styrene and ethyl cellulose (a'4) {(1-phenylethyl) ethylcellulose, (2-phenylethyl) ethylcellulose}]

5 parts of acetylcellulose ("D-Cell" cellulose acetate L-20 ") was replaced with 3.5 parts of" ethylcellulose (10 cps, A reaction product (a'4) of styrene and ethyl cellulose was obtained in the same manner as described above except that the modified product was changed.

&Lt; Production Example 66 >

[Reaction product of 3,4-dihydrocoumarin and acetylcellulose (a'5) {acetyl 3- (2-hydroxyphenyl) propionylcellulose}]

5 parts of acetyl cellulose (cellulose acetate L-20, manufactured by Daicel Co., Ltd.) was added to 100 parts of toluene, and dehydration was carried out in the reaction system at 110 占 폚 under reflux of toluene for 3 hours. After dehydration, 4 parts of 3,4-dihydrocoumarin ("D1223" manufactured by Tokyo Kasei Kogyo K.K.) and 0.02 parts of tin 2-ethylhexanoate (II) were added and reacted for 12 hours while maintaining 80 ° C ± 10 ° C. . Thereafter, the reaction mixture was cooled to 25 DEG C and the reaction solution was added to 500 parts of acetone. The white solid precipitated was collected by filtration and washed with 1000 parts of acetone. And dried under reduced pressure at 40 DEG C for 3 hours to obtain a reaction product (a'5) of 3,4-dihydrocoumarin and acetylcellulose.

<Production Example 67>

[Reaction product of 3,4-dihydrocoumarin and ethylcellulose (a'6) {ethylcellulose 3- (2-hydroxyphenyl) propionate}]

5 parts of acetylcellulose ("D-Cell" cellulose acetate L-20 ") was replaced with 3.5 parts of" ethylcellulose (10 cps, made by Dow Chemical Co.) " A reaction product (a'6) of 3,4-dihydrocoumarin and ethylcellulose was obtained in the same manner as in Example 1 except for changing the content.

<Production Example 68>

[Reaction product of? -caprolactone and acetyl cellulose (a'7) {acetyl 6-hydroxyhexanoyl cellulose}]

5 parts of acetyl cellulose (cellulose acetate L-20, manufactured by Daicel Co., Ltd.) was added to 100 parts of toluene, and dehydration was carried out in the reaction system at 110 占 폚 under reflux of toluene for 3 hours. After dehydration, 4 parts of? -Caprolactone ("C0702" manufactured by Tokyo Kasei Kogyo Co., Ltd.) and 0.02 parts of tin 2-ethylhexanoate (II) were added, and the reaction was carried out for 12 hours while maintaining the temperature at 80 ° C ± 10 ° C . Thereafter, the reaction mixture was cooled to 25 DEG C and the reaction solution was added to 500 parts of acetone. The white solid precipitated was collected by filtration and washed with 1000 parts of acetone. The reaction product (a'7) of? -Caprolactone and acetylcellulose was obtained by drying under reduced pressure at 40 占 폚 for 3 hours.

&Lt; Preparation Example 69 &

[Reaction product of? -caprolactone and ethylcellulose (a'8) {Ethylcellulose 6-hydroxyhexanoate}]

5 parts of acetyl cellulose ("D-Cell" cellulose acetate L-20 ") was replaced with 3.5 parts of" ethyl cellulose (10 cps, made by Dow Chemical Co.) " (A'8) of epsilon -caprolactone and ethylcellulose was obtained in the same manner as described above except for changing the content of the reaction product.

In Table 2, (y1) used in the following Production Examples 70 to 74 was used.

&Lt; Production Example 70 >

[Monoisocyanate compound (y141) which is the reaction product of 1,6-hexamethylene diisocyanate and methanol]

32 parts of methanol (manufactured by Tokyo Kasei Kogyo K.K.), 168 parts of hexamethylene diisocyanate [(trade name: Dyuranate HDI, manufactured by Asahi Kasei Chemicals Co., Ltd.)] was added to a reaction vessel equipped with a stirrer, a cooling tube and a thermometer And 1 part of bismuth tri (2-ethylhexanoate) (50% solution of 2-ethylhexanoic acid) as a catalyst were charged and reacted at 70 DEG C for 5 hours to obtain urethane resin (y141).

&Lt; Production Example 71 >

[Monoisocyanate compound (y142) which is the reaction product of isophorone diisocyanate and ethanol]

In the same manner as in Production Example 70 except that 46 parts of "ethanol (manufactured by Tokyo Kasei Kogyo Co., Ltd.)" and "isophorone diisocyanate [trade name: Death All I , Sumika Bayer Urethane] (222 parts) was used in place of the monoisocyanate compound (Y142).

&Lt; Production Example 72 >

[Monoisocyanate compound (y143) which is the reaction product of 4,4'-dicyclohexylmethane diisocyanate and n-butanol]

In the same manner as in Production Example 70, except that "74 parts of n-butanol (manufactured by Tokyo Kasei Kogyo K.K.)" and "dicyclohexylmethane-4,4'-dicyclohexylmethane diisocyanate" (Diisocyanate [trade name: Desmodule W, manufactured by Sumika Bayer Urethane Co., Ltd.]] was used in place of "262 parts".

<Production Example 73>

[Monoisocyanate compound (y144) which is the reaction product of tolylene diisocyanate and n-octanol]

The procedure of Production Example 70 was repeated except that "130 parts of octanol (manufactured by Tokyo Kasei Kogyo Co., Ltd.)" was used instead of "32 parts of methanol", and "tolylene diisocyanate [trade name: (Trade name: DUR T-80, manufactured by Sumika Bayer Urethane Co., Ltd.)] was used in place of the monoisocyanate compound (y144).

<Production Example 74>

[Monoisocyanate compound (y145) which is a reaction product of xylylene isocyanate and phenol]

The same procedure as in Production Example 70 was repeated except that "xylidene diisocyanate (trade name: Desmodule 15, manufactured by Tokyo Kasei Kogyo Co., Ltd.)" was used in place of "methanol 32 parts" and "hexamethylene diisocyanate 168 parts" Quot; manufactured by Sumitomo Chemical Co., Ltd., &quot; 118 parts by Sumika Bayer Urethane &quot;) was used in place of the monoisocyanate compound (Y145).

In addition, the components shown in Tables 1 to 9 were used as follows.

○ polysaccharide

Cellulose: "KC Flock W-50GK", manufactured by Nippon Seishi Chemical Co., Ltd.

Diacetylcellulose-1: Daicel Co., Ltd., "Acetic Acid Cellulose L-20"

Diacetylcellulose-2: Daicel Co., Ltd., "Acetic Acid Cellulose L-50"

Diacetylcellulose-3: Eastman Chemical &quot; CA-394 &quot;

Acetylbutyryl cellulose-1: Eastman Chemical &quot; CAB551-0.2 &quot;

Acetylbutyrylcellulose-2: Eastman Chemical &quot; CAB381-0.5 &quot;

Acetylpropionylcellulose-1: Eastman Chemical &quot; CAP482-0.5 &quot;

Acetylpropionyl cellulose-2: Eastman Chemical &quot; CAP482-2.0 &quot;

Carboxymethylcellulose: "San Rose F1400MC" manufactured by Nippon Seishi Chemical Co., Ltd.

Carboxymethylethylcellulose: manufactured by Sanyo Chemical Industries, Ltd., "CMEC"

Cellulose acetate phthalate: manufactured by Wako Pure Chemical Industries, Ltd.

Hydroxypropyl methylcellulose phthalate: "HPMCP HP-50" manufactured by Shin-Etsu Chemical Co., Ltd.

Hydroxypropyl methylcellulose hexahydrophthalate: manufactured by Shin-Etsu Chemical Co., Ltd., "HPMCHHP"

Hydroxypropylmethylcellulose acetate phthalate: "HPMCAP" manufactured by Shin-Etsu Chemical Co., Ltd.

Hydroxypropylmethylcellulose acetate succinate: "AQOAT AS-MG" manufactured by Shin-Etsu Chemical Co., Ltd.

Hydroxyethylcellulose-1: Daicel Co., Ltd., &quot; HEC-SP900 &quot;

Hydroxyethylcellulose-2: "HEC AX-15" manufactured by Sumitomo Seika Co., Ltd.

Hydroxypropylcellulose: manufactured by Nippon Soda Co., Ltd., &quot; NISOO HPC &quot;

Low-substituted hydroxypropyl cellulose: LH-31 manufactured by Shin-Etsu Chemical Co., Ltd.

Methylcellulose-1: "METOLOSE SM-8000" manufactured by Shin-Etsu Chemical Co.,

Methylcellulose-2: &quot; Maproz M-4000 &quot; manufactured by Matsumoto Yushi Seiyaku Co.,

Ethylcellulose-1: manufactured by Dow Chemical Co., &quot; Ethocell &quot;

Ethylcellulose-2: "Ethylcellulose 45CP" manufactured by Kanto Kagaku Co., Ltd.

Hydroxypropylmethylcellulose-1: "METOLOSE 90SH-4000" manufactured by Shin-Etsu Chemical Co.,

Hydroxypropylmethylcellulose-2: &quot; Mapolose 60MP-4000 &quot;, manufactured by Matsumoto Yushi Seiyaku Co.,

Hydroxyethyl methylcellulose: "METOLOSE SNB60T" manufactured by Shin-Etsu Chemical Co., Ltd.

Starch: manufactured by Nippon Constat Co., Ltd., "cornstarch white"

Amylose: manufactured by Hayashibara Co., Ltd., "Amylose EX-I"

Amylopectin: manufactured by Wako Pure Chemical Industries, Ltd.

Glycogen: manufactured by Wako Pure Chemical Industries, Ltd., "glycogen (derived from oyster)"

Manufactured by Wako Pure Chemical Industries, Ltd.

Chitosan: manufactured by Wako Pure Chemical Industries, Ltd., "chitosan 1000"

Agarose: manufactured by Wako Junyaku Co., Ltd., "Agarose 1600"

Carrageenan: made by Wako Jun Yaku Co., Ltd., "Eyalisimosu (carrageenan)"

Heparin: manufactured by Wako Pure Chemical Industries, Ltd., "heparin sodium"

Hyaluronic acid: manufactured by QP Corporation, "HA-F"

Pectin: manufactured by Wako Junyaku Co., Ltd.

Xyloglucan: manufactured by Dainippon Sumitomo Seiyaku Co., Ltd., "Glolid 6C"

Xanthan gum: manufactured by Wako Pure Chemical Industries, Ltd.

In addition, the total introduction rates of the urethane group, urea group, amide group and imide group in Tables 1 to 5 and 7 to 9 were obtained as follows.

&Lt; Calculation method of total introduction ratio of urethane group, urea group, amide group and imide group>

Total introduction ratio of urethane group, urea group, amide group and imide group = P / T '(1)

P: a NMR integral value (P ₁ ) of a hydrogen atom of a hydroxyl group, a carboxyl group and an amino group of a urethane group chemically modified in the monosaccharide unit constituting the modified polysaccharide (A), a NMR integrated value ₂ ) obtained by applying the NMR integration value (P ₃ ) of the hydrogen atom of the amide group and the NMR integration value (P ₄ ) of the hydrogen atom of the imide group to the following equation (2)

_{P = P 1 + P 2/} 2 + P 3 + P 4 (2)

T ': the NMR integral value of the hydrogen atom directly bonded to the carbon atom at the 4th position of the monosaccharide unit constituting the modified polysaccharide (A)

<Method for measuring the total introduction ratio of urethane group, urea group, amide group and imide group>

Solvent: deuterated dimethylsulfoxide

Apparatus: AVANCE 300 (manufactured by Bruker K.K.)

Frequency: 300MHz

In Table 6, the proportion of functional groups chemically modified with (B) in (A) was determined by the following measurement method.

<Method for measuring the ratio of functional groups chemically modified with (B)>

¹ H-NMR of the polysaccharide (a) and the modified polysaccharide (A) before the modification is measured. The ratio (%) of the functional group modified by (B) was calculated by applying the following integral value obtained from each measurement result to the following equation (3).

(%) = {(T-S) / T} × 100 (3)

S = [(integral value of the hydrogen atom of the hydroxyl group of the modified polysaccharide (A)) + {integral value of the hydrogen atom of the amino group of the modified polysaccharide (A)) / 2]

T = [(integral value of the hydrogen atom of the hydroxyl group of the polysaccharide (a)) + {integral value of the hydrogen atom of the amino group of the polysaccharide (a) / 2}]

Solvent: deuterated dimethylsulfoxide

Apparatus: AVANCE 300 (manufactured by Bruker K.K.)

Frequency: 300MHz

In Table 6, the aromatic ring concentration in (A) was determined by the following measurement method.

&Lt; Measurement of aromatic ring concentration >

¹ H-NMR of the polysaccharide (a) and the modified polysaccharide (A) before the modification is measured and the following integral value obtained from each measurement result is applied to the following equation (4) (% By weight).

(%) = {U x W / (U x W + V)} x 100 (4)

U = (integral value of one hydrogen atom in the structure of the aromatic compound (B)) x (number of aromatic rings in the aromatic compound (B)) x 5 / (monosaccharide constituting the modified polysaccharide The sum of the integral values of the hydrogen atoms bonded to the 5th carbon)

V = molecular weight of the monosaccharide constituting the polysaccharide (a)

W = molecular weight of the aromatic compound (B)

Solvent: deuterated dimethylsulfoxide

Apparatus: AVANCE 300 (manufactured by Bruker K.K.)

Frequency: 300MHz

In Tables 1 to 9, Mn of the modified polysaccharide (A) was measured under the following conditions.

Apparatus: gel permeation chromatography

[Alliance GPC V2000 &quot;, manufactured by Waters Co., Ltd.]

Solvent: N, N-dimethylformamide

Reference substance: polystyrene

Sample concentration: 3 mg / ml

Column fixed bed: PLgel MIXED-B

[Manufactured by Polymer La Boratoliz Co., Ltd.]

Column temperature: 40 DEG C

Examples 1 to 61 and Comparative Examples 1 to 32

100 parts of each of (A-1) to (A-61) prepared in Production Examples 1 to 61 and (A'-1) to (A'-32) prepared in Comparative Production Examples 1 to 32, And 1000 parts of 1,3-dioxolane were mixed together and uniformly mixed and stirred with a disperser to prepare resin compositions for reversed wavelength dispersing films of Examples 1 to 61 and Comparative Examples 1 to 32, respectively.

[Preparation of reverse wavelength dispersion film]

The resin composition for each of the reverse wavelength dispersion films obtained in Examples 1 to 61 and Comparative Examples 1 to 32 was applied to a PET (polyethylene terephthalate) film having a thickness of 120 탆 (Cosmo Shine, manufactured by Toyobo Co., Ltd.) Using an applicator so as to have a thickness of 80 mu m and dried at 80 DEG C for 2 hours. After drying, the film was peeled off from the PET film to obtain an inverse wavelength dispersion film.

[Evaluation of film performance]

Using the produced film, the following evaluations (1) and (2) were carried out. The results are shown in Tables 10 and 11.

(1) Transmittance and haze (transparency)

The transmittance and haze were measured in accordance with JIS-K7136 using a total luminous transmittance measuring apparatus (trade name "haze-garddual" manufactured by BYK gardner). The transmittance and the haze are all in%.

(2) Definite birefringence and reverse wavelength dispersion

Plane retardation (Re) with respect to light of wavelengths 450 nm, 590 nm and 630 nm was measured with "RETS-100" manufactured by Otsuka Denshi Co., Ltd.

The birefringence is defined as a value obtained by dividing the retardation value at a wavelength of 590 nm by the thickness of the film. The larger this value is, the higher the definition birefringence is.

Reversible wavelength dispersibility indicates the values of Re (450) / Re (590) and Re (630) / Re (590). In addition, Re (450), Re (590), and Re (630) indicate in-plane retardations at wavelengths of 450 nm, 550 nm, and 630 nm, respectively. Re (450) / Re (590) = 0.88 占 .3 and Re (630) / Re (590) = 1.06 占 0.03 are particularly good in terms of reverse wavelength dispersion, And Re (630) / Re (590) are large, the reverse wavelength dispersion is also particularly good.

A reflection chromaticity b * measurement film was prepared by the following production method, and the reflection chromaticity b * was measured in accordance with JIS-Z8729.

&Lt; Production method of reflection chromaticity b * measuring film >

The resin composition for the reverse wavelength dispersion film was applied to a surface-treated PET (polyethylene terephthalate) film having a thickness of 120 占 퐉 (Cosmo Shine, manufactured by Toyobo Co., Ltd.) with an applicator so as to have a thickness of 80 占 퐉 . The coating material was dried at 80 DEG C for 2 hours. After drying, the film was peeled off from the PET film to obtain a film for measurement of the b * reflection chromaticity.

From the results of Tables 10 and 11, it can be seen that the resin compositions for reversed wavelength dispersive films of Examples 1 to 61 of the present invention both have saponification resistance, transparency, positive birefringence and reverse wavelength dispersion . From this, it can be seen that the composition for film and sheet is excellent.

The resin composition for an inverse wavelength-dispersive film of the present invention is excellent in anti-saponification property, transparency, positive birefringence and reverse wavelength dispersibility, and is therefore particularly useful as a reverse wavelength dispersion film or sheet, a retardation film or sheet, And is useful as a polarizing sheet.

Claims (12)

At least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group and an amino group possessed by the polysaccharide is chemically modified with at least one functional group selected from the group consisting of ether group, urethane group, urea group, amide group and imide group, (A), wherein the average molecular dispersion of all monosaccharide units constituting the modified polysaccharide (A) is 0.50 to 20.0, and the resin composition for an inverted-wavelength dispersing film is 80 μm And the absolute value of the reflection chromaticity b * obtained in accordance with JIS-Z8729 of the film formed to a film thickness of 0 to 1.0 is 0 to 1.0. The method according to claim 1,
Wherein the modified polysaccharide (A) is a polysaccharide wherein the polysaccharide (a) is a chemically modified polysaccharide and at least one unit constituting the modified polysaccharide (A) is at least one selected from the group consisting of the following chemical formulas (1) to Resin composition for reverse wavelength dispersion film having one structure:
The polysaccharide (a) may be selected from the group consisting of starch, glycogen, cellulose, chitin, chitosan, agarose, carrageenan, heparin, hyaluronic acid, pectin, xyloglucan and xanthan gum, At least one polysaccharide selected from the group consisting of polysaccharides substituted with an imide group.

Wherein X ¹ to X ¹³ are each independently a hydrogen atom or the following formula (7); At least one of X ¹ to X ³ is a substituent represented by the following formula (7); At least one of X ⁴ to X ⁶ is a substituent represented by the following formula (7); At least one of X ⁷ and X ⁸ is a substituent represented by the following formula (7); At least one of X ¹⁰ and X ¹¹ is a substituent represented by the following formula (7); At least one of X ¹² and X ¹³ is a substituent represented by the following formula (7); Y is an oxygen atom or an NH group, and Z is a hydroxyl group or a substituent represented by the formula (8).

(7)
Wherein R ¹ is a hydrogen atom or a monovalent aliphatic hydrocarbon group having 1 to 18 carbon atoms; * Indicates that the substituent represented by the formula (7) is bonded to the oxygen atom and / or the nitrogen atom adjacent to X in the above formulas (1) to (6)

(8)
Wherein R ² is a monovalent aliphatic hydrocarbon group or alkyl polyoxyalkylene group having 1 to 12 carbon atoms; * Indicates that the substituent represented by the formula (8) bonds with the carbon atom adjacent to Z in the formula (5) by the bond to which it is attached. 3. The method of claim 2,
In the formula (7), R ¹ is preferably a methyl group, an ethyl group, an n-propyl group, an n-butyl group, a sec-butyl group, a t-butyl group, a n-hexyl group, a cyclohexyl group, Is at least one substituent selected from the group consisting of a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a n-butyl group, a n-butyl group, The method according to claim 1,
Wherein the modified polysaccharide (A) is a polysaccharide wherein the polysaccharide (a) is chemically modified, and at least one hydroxyl group of the polysaccharide (a) is chemically modified with the following aromatic compound (B) having an epoxy group, Resin composition for dispersion film:
The polysaccharide (a) may be selected from the group consisting of starch, glycogen, cellulose, chitin, chitosan, agarose, carrageenan, heparin, hyaluronic acid, pectin, xyloglucan and xanthan gum, At least one polysaccharide selected from the group consisting of polysaccharides substituted with an imide group.
Aromatic compound (B): an aromatic compound (b1) in which one hydrogen atom in an aromatic ring is substituted with an epoxy group, an aromatic compound (b2) in which the alkyl is substituted with an epoxy alkyl group having 3 to 8 carbon atoms, An aromatic compound (b3) in which at least one carbon atom in the alkyl group is substituted with an oxygen atom-substituted functional group, at least one kind of compound selected from the group consisting of 5. The method according to any one of claims 2 to 4,
Wherein the polysaccharide (a) is at least one selected from the group consisting of cellulose, acylated cellulose (a1), etherified cellulose (a2) and etherified acylated cellulose (a3). 6. The method according to any one of claims 1 to 5,
A resin composition for reversed wavelength dispersion film, which contains esterified cellulose (C). The method according to claim 6,
Wherein the esterified cellulose (C) is an alkyl esterified cellulose, and the alkyl has 1 to 18 carbon atoms. 8. The method according to claim 6 or 7,
Wherein the esterified cellulose (C) is an esterified cellulose having at least one ester group selected from the group consisting of an acetate group, a propionate group and a butyrate group. 9. The method according to any one of claims 6 to 8,
(1), wherein the content of the modified polysaccharide (A) is 1 to 99.9% by weight and the content of the esterified cellulose (C) is 0.1 to 99% by weight based on the weight of the resin composition for reversed wavelength dispersion film Composition. A reverse wavelength dispersion film or reverse wavelength dispersion sheet formed from the resin composition for reverse wavelength dispersion film according to any one of claims 1 to 9. A retardation film or a retardation sheet formed from the resin composition for reversed wavelength dispersion film according to any one of claims 1 to 9. A circularly polarizing film or a circularly polarizing sheet formed from the resin composition for a reverse wavelength dispersion film according to any one of claims 1 to 9.