TW200949319A - Optical film, process for producing optical film, polarizer comprising the same, liquid-crystal display, and compound - Google Patents

Abstract

An optical film is provided which has a satisfactory haze, is reduced in bleeding even in long-term storage, and is free from film web deformation failures such as a ridge failure and protrusion failure. Also provided are: a process for producing an optical film; a polarizer comprising the film; a liquid-crystal display employing the polarizer; and a compound usable for forming the optical film. The optical film is characterized by comprising at least one compound represented by the following general formula (1) and a cellulose ester. (In the formula, R1 and R2 each independently represents a substituent; R3 represents hydrogen or alkyl; and n is an integer of 0-4; provided that the R1's may be the same or different.)

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical film, a method of producing an optical film, a polarizing plate using the same, a liquid crystal display device, and a compound. [Prior Art] In recent years, as a thin display replacing a CRT display, emphasis has been placed on a liquid crystal display device (liquid crystal display), a plasma display, and an organic El display. These new generations of displays carry most optical films, but because of their thinness, the demands for the various functional properties of these optical films are becoming stricter year by year. Therefore, it is expected that an optical film having an improved performance can be achieved. On the other hand, the development of thin-type, lightweight, large-screen, and high-definition notebooks is underway. As a result, the optical film for liquid crystal display devices has become increasingly thinner, wider, and higher in quality. Although various resins have been used as the optical film for the liquid Q crystal display device, cellulose ester, polycarbonate, and polyolefin are now used as the polarizing plate protective film for the optical film. Among them, cellulose ester films using cellulose esters are also more overwhelming. These cellulose ester films have heretofore been produced by solution casting. The solution casting method is a film forming method in which a solution in which a cellulose ester is dissolved in a solvent is cast to obtain a film shape, and then the solvent is evaporated and dried to obtain a film. The flatness of the film formed by the solution casting method is high, so that a high-definition liquid crystal display having no unevenness can be obtained by using this. -5- 200949319 However, the solution casting method requires a large amount of organic solvent, causing a problem of causing a large environmental load. From the viewpoint of the solubility characteristics, the cellulose ester film is formed by using a halogen-based solvent having a large environmental load, so that the use of a solvent is particularly required to be reduced, and it is difficult to increase the yield of the cellulose ester by solution casting. film. Further, since it is necessary to remove the solvent remaining in the inside of the film, the equipment investment and manufacturing cost of the manufacturing processes such as the drying process, the drying energy, and the evaporation and recovery of the solvent are increased, and the reduction of these becomes an important issue. The cellulose ester film for optical use has a manufacturing load and a device load accompanying the use of the solvent in the production step, and the optical properties and mechanical properties are also insufficient. In recent years, as a silver salt photograph or a polarizing plate protective film, an attempt has been made to melt a film of a cellulose ester. The cellulose ester is a polymer having a very high viscosity at the time of melting, and the glass transition temperature is also high, so that after the cellulose ester is melted When it is extruded from a mold, it is difficult to flatten even if it is cast on a cooling drum or a cooling conveyor belt, and has a problem that optical characteristics and mechanical properties are lower than that of a solution cast film (see, for example, Patent Document 1). Therefore, these cellulose ester films are generally wound into a winding core to be stored and transported as a film original roll. Therefore, when the melt-film-formed film is stored for a long period of time in the state in which the film is wound up by the winding core, there is a malfunction of the horseback failure or the so-called core transfer on the core portion of the original film roll. There is a problem of collapse on the film during winding. The so-called horseback fault is that the film roll is formed into a U-shaped '6 - 200949319 of the horseback, and a band-shaped convex portion having a pitch of about 2 to 3 cm is formed in the vicinity of the center portion, because the film may remain deformed, so When the polarizing plate is processed, the surface will see deformation problems. Up to now, horseback failures have been reduced by reducing the dynamic friction coefficient of the bottoms or adjusting the height of the piping (embossing) on both sides. Further, the core transfer is a failure of the film deformation caused by the unevenness of the core or the film. These failures have not been an excessive problem on the film produced by the conventional solution casting, but the film produced by the melt film formation has a low planarity and is a serious problem. In particular, in recent years, with the large screen, it is expected that the width of the original film roll can be wider and the winding length can be longer. Therefore, the film is more widely wound, or the film original roll load tends to increase, and it is expected to be improved in the case where these troubles are more likely to occur. [Patent Document 1] JP-A-2006-24 1428 SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a smog which is excellent in smog and which is less permeable even after storage for a long period of time. An optical film which does not cause deformation of a film original roll such as a horseback failure or a convex failure, a method of producing an optical film, a polarizing plate using the same, a liquid crystal display device using the same, and an optical film used therefor In the case of the above-mentioned subject, the results of the detailed review by the present inventors, if the cellulose -7-200949319 contains a specific cinnamate compound, it is surprisingly known that the smog is good, even after long-term storage. There is also less leakage 'no deformation fault of the original film roll such as horseback failure or convex failure. Further, it has been found that the optical film of the present invention can be produced by a melt casting method to complete the present invention. Further, it has been found that by using such an optical film, a polarizing plate having good characteristics and a liquid crystal display device can be provided. A novel compound for use in the aforementioned optical film was found. The above problems of the present invention are achieved by the following constitution. An optical film comprising at least one of a compound represented by the following general formula (1) and a cellulose ester. [Chemical 1] • HIS type (1)

=C-R* f (wherein R1 and R2 each independently represent a substituent, and R3 represents a hydrogen atom or an alkyl group. η represents an integer of 0 to 4. The plural Ri may be the same or different). 2. The optical film according to the above-mentioned item 1 is at least one kind of a compound containing a compound selected from the group consisting of a hindered phenol-based compound, a phosphorus-based compound, a lactone-based compound, and an acrylate-based compound. A method for producing an optical film, characterized in that the optical film described in the above item i or 2 is produced by a melt casting method. 4. A polarizing plate </ RTI> characterized in that the light film of the above-mentioned 1 or 2 is contained on at least one side of a polarizer. A liquid crystal display device characterized in that the polarizing plate according to the above 4 is used. 6. A compound represented by the following general formula (2). [Chemical 2] General formula (2&gt;

〇 (wherein R 4 to R 6 each independently represent an alkyl group, a cycloalkyl group or an aryl group, r 7 represents a substituent, and η represents an integer of 0 to 3. The plural R 7 may be the same or different) 〇 [Effect of the invention] The invention can provide an optical film, an optical film manufacturing method, and a polarizing film using the same, which is excellent in haze, and which is less leaky during long-term storage, and which does not cause deformation of a film original roll such as a horseback failure or a convex failure. A plate, a liquid crystal display device, and a novel compound for use in the optical film. [Better Mode for Carrying Out the Invention] Hereinafter, a preferred embodiment of the present invention will be described in detail, but the present invention is not limited thereto. some. The optical film of the present invention is characterized by containing at least one of the compounds represented by the above general formula (1) and a cellulose ester. <<Compound of the general formula (1)>> First, the compound of the above general formula (1) of the present invention will be described in detail. In the formula, R1 and R2 each independently represent a substituent, R3 represents a hydrogen atom or an alkyl group, and η represents an integer of 0 to 4. The plural R1s may be the same or different. Specific examples of the substituent include an alkyl group (e.g., methyl group, ethyl group, propyl group, isopropyl group, t-butyl group, pentyl group, hexyl group, octyl group, lauryl group, trifluoromethyl group, etc.), and a ring. An alkyl group (e.g., cyclopentyl, cyclohexyl, etc.), an aryl group (e.g., phenyl, naphthyl, etc.), an anthranyl group (e.g., an acetamino group, a benzylamino group, etc.), an alkylthio group (e.g., A) Alkylthio, ethylthio, etc.), arylthio (e.g., phenylthio, naphthylthio, etc.), alkenyl (e.g., vinyl, 2-propenyl, 3-butenyl, oxime) a methyl_3_propenyl group, a 3-pentenyl group, a methyl-3_butyl group, a 4-hexyl group, a cyclohexyl group, etc.), a halogen atom (for example, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, etc.) , alkynyl (e.g., propynyl, etc.), heterocyclic (e.g., pyridyl, thiazolyl, oxazolyl, imidazolyl, etc.), alkylsulfonyl (e.g., methylsulfonyl, ethylsulfonyl, etc.) An arylsulfonyl group (e.g., phenylsulfonyl, naphthylsulfonyl, etc.), an alkylsulfinyl group (e.g., a methylsulfinyl group, etc.), an arylsulfinyl group (e.g., a phenyl group) Aya 醯ji et al ), phosphinyl, fluorenyl (eg, ethyl, trimethylethyl, benzyl, etc.), aminomethanyl (eg, amine carbonyl, methylamine carbonyl-10-200949319, dimethyl Amine carbonyl, butylamine carbonyl, cyclohexylamine carbonyl, phenylamine carbonyl, 2-pyridylamine carbonyl, etc.), amine sulfonyl (eg, amine sulfonyl, methylamine sulfonyl, dimethylamine sulfonate) Mercapto, butylamine sulfonyl, hexylamine sulfonyl, cyclohexylamine sulfonyl, octylamine sulfonyl, lauryl sulfonyl, phenylamine sulfonyl, naphthylamine sulfonyl , 2-pyridylaminesulfonyl, etc.), sulfonylamino (eg, sulfonamide, benzenesulfonylamino, etc.), cyano, alkoxy (eg, methoxy, ethoxy, propoxy) An aryloxy group (such as π such as phenoxy group, naphthyloxy group, etc.), a heterocyclic oxy group, a decyloxy group, a decyloxy group (e.g., an ethoxy group, a benzhydryloxy group, etc.), an amine A carbonyloxy group, an amine group (for example, an amine group, an ethylamino group, a dimethylamino group, a butylamino group, a cyclopentylamino group, a 2-ethylhexylamino group, a dodecylamino group, etc.), an anilino group (for example, an aniline) Base, chloroaniline, aben Base, anisidine, naphthylamino, 2-schemantyl, etc.), imine, ureido (eg methylureido, ethylureido, pentylurea, cyclohexylureido, octylurea) Base, lauryl urea group, phenylureido group, naphthylurea group, 2-anthracene than amide group, etc.), alkoxycarbonylamino group (eg methoxycarbonyl Q amine group, phenoxycarbonyl amine) An alkoxycarbonyl group (e.g., methoxycarbonyl group, ethoxycarbonyl group, phenoxycarbonyl group, etc.), an aryloxycarbonyl group (e.g., phenoxycarbonyl group, etc.), a heterocyclic thio group, a thiourea group, Each group such as a hydroxyl group or a hydrogenthio group. These substituents may be further substituted by the same substituent. Although r3 represents a hydrogen atom or an alkyl group, it is specifically synonymous with the alkyl group described as the substituent represented by R1 and R2 in the above general formula (1). In the general formula (1), R1 is preferably an alkyl group or an alkoxy group, and R2 is an aromatic group, an aryl group, an alkoxycarbonyl group, an aminomethyl sulfonyl group, an alkylsulfonyl group or an aryl sulfonate. The base and the cyano group are preferred, and R3 is preferably a hydrogen atom. Further, in the above-mentioned general formula -11 - 200949319 (1), R2 is preferably an alkoxycarbonyl group. More preferably, it is a compound represented by the above general formula (2). In the formula, R4 to R6 each independently represent an alkyl group, a cycloalkyl group or an aryl group, han 7 represents a substituent, and η represents an integer of 0 to 3. The plural R7 may be the same or danced.) In the above general formula (2), 'R4 to R6 each independently represent an alkyl group, a cycloalkyl group or an aryl group, but specifically, the ruler 1 as shown in the above general formula (1) The alkyl group, the cycloalkyl group or the aryl group described in the substituent is synonymous, and these substituents may be further substituted with the same substituents as the substituents represented by R1 and R2 of the above general formula (1). Further, in the general formula (2), R7 represents a substituent, but specifically, it is synonymous with those described as the substituents represented by R1 and R2 in the above general formula (1), and these substituents may be further substituted by the same substituent. Representative specific examples of the compounds represented by the general formula (1) and the general formula (2) of the present invention are shown below, but the present invention is not limited thereto. -12- 200949319

[Chem. 3] 1 - 1 1 A 2 1-3 1 - 4

CH3

CH=CH'-C02CH3 tC4H, OH v^^CHsCH-COjCHs t〇4H9

OH t〇4H9 v^L-CH-CH-COjC^

V OCH, 1 to 5

-13- 200949319 [Chemical 4] 1 β

OH

CH=CH^C〇2C4H» CO2C4H, 1-7

1-8

OC4H· CH-COiCaHe

1-9

CH3O

CH=CHC02C4Ha 1-10 6H3 OH s^Js^CH^CHCOmC^corner

-14 - 200949319

[化5] 1_12 1 a 13 1-14 1-15

OH

CHi

tC4H9

CH=CH-CN 200949319 [Chemical 6]

OH 〇M

tC4H9 t〇4H,

C3HrOC〇CH=CH-T&lt;ii!SV-CH, ^CH=CH-C&lt;^C3HT

-16- 200949319 [化7] 1-21

OH

J&lt;^CH=CH-CN χτ CH^O^^Y^OeHa OCH3 1 a 22 ch3 OH sn^^CH=CH-CJ oc4h. 1-23

Nhcoc4h9 1-24 c4h9conh

CH=drt-cd2c3H7 1-25

OH Ci Cl

-17- 200949319 [Chem. 8] 1-26 1-27

1-28

CH=CH-C02CHs

CH=CH-C〇i〇H3 1~29 1-30

-18- 200949319 [Chemical 9] 1-31 CH3?H h3c h3c

Ch=chIHVHs 1 0 ch3 —32 Again, 1-33

CH3 CH3〇H

Chs〇hIH;1

CH 1-34 ^CH3h3c CH3&lt;?h

Ch3 H3C

Ch3 CHa O CHa

O ❹

〇

〇 CHa 1-38 1-37

〇, 〇 C4H9 (..,

. Order h3c 19- 200949319 [化10]

1-48

ο ch=ch4^

°^0 200949319 [化11]

1-54 1-55

-21 - 200949319 [Chem. 12]

22- 200949319 [Chem. 13]

Further, the geometrical isomers having the double bond of the structure represented by the above general formula (1) and the general formula (2) as a shaft may be cis or trans. The compound of the general formula (1) and the general formula (2) of the present invention can be easily synthesized by a known synthesis method described in J. Chem. 711 (1998). -23- 200949319 The synthesis method of the above general formula (η, and the general formula (2)) of the present invention will be specifically described below, but the present invention is not limited thereto. Synthesis Example 1-1 (Illustrated Compound 1- Synthesis of 31) via Wittig Reaction [Chem. 14] ❿

157.4 g of triphenylbenzene scale was dissolved in 63 ml of toluene, and 117 g of t-butylbromoacetate was added. After standing for 1 hour, the precipitated crude product was washed with toluene to quantitatively obtain a crystal of Intermediate A. Into the middle -24 - 200949319, 650 ml of water, 650 ml of toluene, and 73.3 g of sodium carbonate were added to the body A260g, and the mixture was stirred at room temperature for 2 hours. The organic layer was separated, and concentrated under reduced pressure to give crystals of Intermediate B of 90% yield. Next, 3,5-di-t-butylsalicylaldehyde aldehyde 44_8 g was dissolved in 470 ml of methanol, and Intermediate B72g was added thereto. After allowing to stand at room temperature for 1 day, ethyl acetate and water were added to the mixture, and the mixture was washed with water, and the organic layer was evaporated. The obtained crystal was analyzed by 1H-NMR and MASS spectrum to confirm the exemplified compound 1-31. 1H-NMR (CDC13): δ 7.84 ( lH,d ) , 7.32 ( lH,d ) , 7·27 ( lH,d) , 6.33 ( lH,d) , 5.26 ( lH,s),1·52 ( 9H , s) , 1. 4 1 ( 9H, s ) , 1.28 ( 9H, s ) Synthesis Example 1 - 2 (Synthesis of exemplified compound 1-31) via Heck reaction Ο -25- 200949319 [Chemical 15 ]

After adding 2,4-di-t-butylphenol (80 g) to 240 ml of toluene, it was dissolved, cooled to 5 ° C, and 72.5 g of 48% HBr was added. Next, 37.9 g of 35% H202 was added dropwise, and after completion of the dropwise addition, the reaction was carried out for 4 hours at room temperature. After the completion of the reaction, the aqueous layer was removed, washed with a NaHCO 3 aqueous solution and a Na 2 SO 3 aqueous solution, and washed with water, and then the toluene layer was separated, and bromo-form crystals were quantitatively obtained under reduced pressure. Secondly, 'bromo-form llO.Og, t-butyl propylene vinegar 62.0g, sodium hydrogencarbonate 82.0g, chlorinated (II) 7mg, and tri-n are added to 330ml of dimethylacetic acid amine. - Butylamine 7 · 0 g, and reacted at an internal temperature of 1 1 ° C for 3 hours. After the reaction, the undissolved residue such as sodium hydrogencarbonate was filtered, and washed with ethyl acetate and a dilute aqueous hydrochloric acid solution, and washed with water, and then the organic layer was separated and concentrated under reduced pressure. The obtained crude crystals were recrystallized from a mixed solvent of methanol/water (7/1) to give white crystals with a yield of 85%. The obtained crystal was analyzed by 1H_NMR and MASS light -26-200949319 to confirm the exemplified compound 1-3. 1 H-NMR ( CDC13 ) : δ 7.84 ( lH,d ) , 7.32 ( lH,d ) , 7.27 ( lH,d) , 6.33 ( lH,d) , 5.26 ( lH,s) , 1.52 ( 9H,s) , 1.41 (9H, s), 1.28 (9H, s) Synthesis Example 2 -1 (Synthesis of exemplified compound 1-54)

[Chemistry 16]

After dissolving 91.0 g of 2,4-di-tert-pentylphenol in 240 ml of toluene, it was cooled to 5 ° C, and 72.5 g of 48% HBr was further added. Next, 37.9 g of 35% H202 was added dropwise, and after the completion of the dropwise addition, the reaction was continued at room temperature for 4 hours. After the completion of the reaction, the aqueous layer was removed, washed with a NaHCO 3 aqueous solution and a Na 2 SO 3 water -27-200949319 solution, and washed with water, and then the toluene layer was separated, and concentrated under reduced pressure to quantitatively obtain crystals of the bromine. Next, bromine 122. (^, butyl butyl acrylate 62. (^, sodium hydrogencarbonate 82. (^, palladium chloride (II) 7 mg, and tri- η-butyl) was added to dimethyl acetamide 3 30 ml. The reaction was carried out for 3 hours at an internal temperature of 110 ° C. After the reaction, the undissolved residue such as sodium hydrogencarbonate was filtered, washed with ethyl acetate and a dilute aqueous hydrochloric acid solution, and then washed with water, and then the organic layer was separated. The residue was purified by column chromatography to give a transparent liquid (yield: 80%). The obtained liquid was analyzed by 1H-NMR and MASS spectroscopy to confirm the compound 1 _ 5 4 . -NMR (CDC13): δ 7.89 ( lH,d ) , 7.23 ( lH,d ) , 7.19 ( lH,d) , 6.34 ( lH,d) , 5.38 ( lH,s) , 1.85 ( 2H,q) ,1.60 (2H,q), 1-53 (9H, s), 1.38 (6H, s), 1.25 (6H, s), 0.66 (6H, t) Synthesis Example 3-1 (Synthesis of exemplified compound 1 - 5 5) 200949319 [化17]

After 2,4-di-α-cumenylphenol 1W.Og was added to 24 ml of toluene and dissolved, it was cooled to 5 ° C, and 72.5 g of 48% HBr was added. Next, 37.9 g of 35% H2〇2 was added dropwise, and after the completion of the dropwise addition, the reaction was continued at room temperature for 4 hours. After the completion of the reaction, the aqueous layer was removed, washed with a NaHCO 3 aqueous solution and a Na 2 SO 3 aqueous solution, and after washing with water, the toluene layer was separated and concentrated under reduced pressure to give a crystal of bromo br. Next, 160.0 g of bromine, 62.0 g of t-butyl acrylate, 82_0 g of sodium hydrogencarbonate, 7 mg of palladium(II) chloride, and 3.0 g of tri-n-butylamine were added to 3,100 ml of dimethylacetamide. The reaction was carried out at an internal temperature of 11 ° C for 3 hours. After the reaction, the undissolved residue such as sodium hydrogencarbonate was filtered, washed with ethyl acetate and a diluted aqueous solution of hydrochloric acid, and washed with water, and then the organic layer was separated and concentrated under reduced pressure. The obtained residue was purified by column chromatography to give a transparent liquid of 82% yield. The obtained liquid was analyzed by 1H_-29-200949319 NMR and MASS spectrum, and was confirmed to be an exemplified compound 1-55. 1 H-NMR ( CDC13 ) : δ 7.75 ( 1 Η, d ), 7 · 3 7 ～ 7.2 5 ( 12H, m) , 6.28 ( lH, d) , 4.62 ( lH, s) , 1.72 ( 6H, s) , 1.58 ( 6H, s ) , 1.46 ( 9H, s ) Synthesis Example 4 - 1

(Synthesis of Compound 1-62) [Chem. 18]

Ch3 ten CHj CH,

After 4,6-di-1 e r t -butyl-m-methine 8 6 · 0 g was placed in toluene 2 4 m 1 and dissolved, it was cooled to 5 ° C, and 72.5 g of 48% HBr was further added. Next, 37.9 g of 35% H202 was added dropwise, and after the completion of the dropwise addition, the reaction was continued for 4 hours at room temperature. After the completion of the reaction, the aqueous layer was removed, and washed with a NaHCO 3 aqueous solution and a Na 2 SO 3 aqueous solution. After washing with water, the toluene layer was separated and reduced by -30-200949319 to obtain a bromo-form having a yield of 90%. The addition was followed by dimethyl acetamide 3 30 ml of bromo-form, t-butyl acrylate 62.0 g, sodium hydrogencarbonate 82.0 g, chlorinated sharp 7 mg, and tri-η-butylamine 7.0. g, after the reaction at the internal temperature ll 〇 ° C, the undissolved residue such as sodium hydrogencarbonate was filtered, washed with a dilute aqueous hydrochloric acid solution, and washed with water, and the organic layer was separated and concentrated. The obtained crude crystals were recrystallized from a mixture of methanol/water (7/1) to give white crystals (yield: 81%). The obtained 1H-NMR and MASS spectra were analyzed and confirmed to be an exemplified compound 〇1H-NMR (CDC13): δ 8.07 ( 1 H, d ) , 7.60 ( , 6.40 ( lH, d) , 5.28 ( lH, s) , 2.65 ( 3H, s) , 1.52 ( , 1.39 ( 9H, s ) , 1.26 ( 9H, s ) Synthetic Example 5 -1 (Synthesis of the exemplified compound 1-70) crystal. 117.0 g (II) H. Crystallization with a post-reducing agent 1 - 62 lH, s ) 9H, s ) -31 - HSC- 200949319 [Chem. 19]

-ch3 kCH, H,C^CH3

CH, (jT °+CH3 ch3 H, C--CH,

After adding 80.0 g of 4_tert-octylphenol to 240 ml of toluene and dissolving, it was cooled to 5 ° C, and 72_5 g of 48% HBr was further added. Next, 37 9 g of 3 5 % palpitations 2 ' was added dropwise, and the reaction was continued for 4 hours at room temperature. After the completion of the reaction, the aqueous layer was removed, and washed with a NaHCO 3 aqueous solution and a Na 2 S 3 aqueous solution. After washing with water, the toluene layer was separated and concentrated under reduced pressure to give a crystal of bromo-form of yield of 90%. . Next, bromo-form lll.Og, t. butyl acrylate 56.0 g, sodium hydrogencarbonate 74.0 g, palladium chloride (II) 6 mg, and tri-η- were added to 330 ml of dimethylacetamide. Butylamine 6.3 g was reacted at an internal temperature of 10 ° C for 3 hours. After the reaction, the undissolved residue such as sodium hydrogencarbonate was filtered, washed with ethyl acetate and a diluted aqueous solution of hydrochloric acid, and then washed with water. The obtained crude crystals were recrystallized from a mixed solvent of methanol/water (7/1) to give white crystals of 82%. The obtained crystal was analyzed by 1H-NMR and MASS light 200949319, and was confirmed to be the exemplified compound 1 - 7 1 . 1H-NMR (CDC13) : δ 7.84 ( lH,d),7·41 ～7·19 ( 3 Η,m ),5.4 1 ( 1 Η,s ),1 · 6 7 ( 2 Η,s ),1 · 5 4 ( 9 Η, s ), 1.3 2 ( 6H, s ) , 0.69 ( 9H, s ) Synthesis Example 6 -1 (Synthesis of exemplified compound 1-71)

[Chem. 20]

H3C_ _CHa Ο 放入 Into 240 ml of toluene, 83.0 g of p-cumenylphenol was added and dissolved, and then cooled to 5. (:, 72.5 g of 48% HBr was added. Next, 37.9 g of 35% H2〇2 was added dropwise, and after the completion of the dropwise addition, the reaction was continued at room temperature for 4 hours. After the completion of the reaction, the aqueous layer was removed, and the aqueous solution of NaHC03 was used. Washed with Na2S03 aqueous solution, and then washed with water, the toluene layer was separated and concentrated under reduced pressure -33-200949319

A bromo-form crystal of 90% yield was obtained. Next, bromo-form 100. g, t-butyl acrylate 56.0 g, sodium hydrogencarbonate 74.0 g, palladium (II) chloride 6 mg, and tri-n η were added to 330 ml of dimethyl acetamide. 6.3 g of butylamine was reacted at an internal temperature of 110 ° C for 3 hours. After the reaction, the undissolved residue such as sodium hydrogencarbonate was filtered, washed with ethyl acetate and a diluted aqueous solution of hydrochloric acid, and washed with water, and then the organic layer was separated and concentrated under reduced pressure. The obtained crude crystals were recrystallized from a mixed solvent of methanol/water (8/1) to give white crystals of 83% yield. The obtained crystal was analyzed by 1H-NMR and MASS spectrum, and was identified as the compound 1-71. 1H-NMR (CDC13): δ 7.93 ( lH,d), 7.38 ~6_75 ( 8H,m) , 6.71 ( lH,s) , 6.55 ( lH,d) ,1.68 ( 6H,s) ,1.56 ( 9H,s )

In the present invention, the amount of the compound represented by the above general formula (1) can be appropriately selected insofar as the object of the present invention is not impaired, but it is usually 0.001 to 2.0 parts by mass per 100 parts by mass of the cellulose vinegar. It is preferably 0.01 to 1.0 part by mass 'more preferably 0.05 to 0.5 part by mass. Two or more of them can be used. Further, it may contain impurities (e.g., raw materials, by-products) which are produced. As an example of a by-product, the following compound of the general formula (3) can be mentioned. -34- 200949319 [Chem. 21] - General 卩}

(R1) „ (wherein R1 represents a substituent, and η represents an integer of 〇~4. The plural R1 may be the same or different). The substituent of the general formula (3) has the same meaning as Ri of the above general formula (1). <<Optical Film>> Next, the optical film of the present invention will be described in detail. In the present invention, the optical film is a functional film used for various display devices such as a liquid crystal display, a plasma display, and an organic EL display, and is specifically a liquid crystal display device. The polarizing plate protective film, the retardation film, the antireflection film, the brightness enhancement film, the hard coating film, the antiglare film, the antistatic film, the optical compensation film such as the expansion of the viewing angle, etc. are used as the substrate of the optical film of the present invention. The resin used for the resin film may be a polycarbonate resin, a polystyrene resin, a polyfluorene resin, or a polyester resin, in addition to the cellulose ester resin alone or the cellulose ester resin. Polyallyl resin, acrylic resin (also containing copolymer), olefin resin (original spinylene resin, cyclic olefin resin, cyclic conjugated diene system) Resin, vinyl alicyclic hydrocarbon resin, etc.), -35- 200949319 A resin such as a cellulose ether resin or a vinyl resin (including a polyvinyl acetate resin or a polyvinyl alcohol resin). Among them, the cellulose ester-based resin alone or the cellulose ester-based resin and the acrylic resin are preferred, and the cellulose ester-based resin is also preferably used alone. The resin content other than the cellulose ester-based resin is 0.1 to 70% by mass is preferable, and 1 to 30% by mass is preferable. The optical film of the present invention can be suitably used for a polarizing plate protective film (including a polarizing plate protective film imparting a functional layer) and a retardation film. Cellulose esters. Next, an optical film (hereinafter simply referred to as a cellulose ester film) containing the cellulose ester and the cellulose ester of the present invention will be described in detail. The cellulose ester film used in the present invention can be passed through a solution stream. It is produced by a casting method and a melt casting method. The solution casting method is a solution in which a cellulose ester is dissolved in a solvent (blending) is cast on a support, and a solvent is evaporated to form a film. The melt casting method is The cellulose ester is melted by heating and cast on the support to form a film. The melt casting method can greatly reduce the amount of the organic solvent used in the production of the film, and thus the solution is cast in the past with a large amount of the organic solvent. In comparison with the method, a film having a greatly improved environmental suitability can be obtained. Therefore, in the present invention, a cellulose ester film is preferably produced by a melt casting method. The melt casting in the present invention is a cellulose ester which is obtained without using a solvent. Heating and melting to a temperature at which fluidity is exhibited, and a method of forming a film by using the method, for example, a method in which a fluidized cellulose ester is extruded from a mold to form a film, and a solvent can be used in a part of a process of preparing a molten cellulose ester. However, in the melt film forming process in the form of a film in the form of -36-200949319, the forming process can be carried out without using a solvent. The cellulose ester constituting the optical film is only a cellulose ester which can be melt-formed. There is no particular limitation. For example, an aromatic carboxylic acid ester or the like may be used. However, in view of obtaining film characteristics such as optical characteristics, a lower fatty acid ester of cellulose is used. Better. The lower fatty acid in the cellulose lower fatty acid ester of the present invention means a fatty acid having 5 or less carbon atoms, for example, cellulose acetate, cellulose propionate, cellulose butyrate, and cellulose. A lower fatty acid ester of cellulose is preferred as the vitamin trimethyl acetate. In the cellulose ester substituted with a fatty acid having 6 or more carbon atoms, the melt film forming property is good, but the obtained cellulose ester film has low mechanical properties and is difficult to use as a substantially optical film. In order to combine both mechanical properties and melt film properties, a mixed fatty acid ester such as cellulose acetate propionate or cellulose acetate butyrate may be used. Further, 'triacetyl cellulose which is a cellulose ester which is generally used in solution casting film formation, which is a cellulose ester having a melting temperature higher than a decomposition temperature, is difficult to use for melt film formation. Among the above cellulose esters, cellulose acetate propionate and cellulose acetate butyrate are also preferably used. Next, the degree of substitution of the thiol group of the cellulose ester used in the present invention will be described. In the cellulose, the first, third, and sixth positions of the 1 glucose unit each have one total of three hydroxyl groups, and the total degree of substitution is the number 値 of the number of sulfhydryl groups bonded to the average of 1 glucose unit. Therefore, the maximum degree of substitution is 3〇. These thiol groups may be substituted on the 2nd, 3rd, and 6th - 37th to 200949319th positions of the glucose unit, or may be substituted. As a degree of substitution of the mixed fatty acid ester, more preferably, the lower fatty acid ester of cellulose acetate propionate or cellulose acetate butyrate is a thiol group having 2 to 4 carbon atoms as a substituent, and The degree of substitution of the fluorenyl group is X, and when the degree of substitution of the fluorenyl group or the butyl group is Y, a cellulose ester which can satisfy the cellulose esters of the following formulas (I), (II) and (ΠΙ) is contained. Further, the degree of substitution of the thiol group with the degree of substitution of other thiol groups is determined by the method specified in ASTM-D81 7-96. Formula (I) 2.4SX + YS2.9 Formula (II) 0SXS2.4 Formula (III) 0_5 S YS2.9 Among them, cellulose acetate propionate is particularly preferred, and 1.2SXS2.1 is also used. 0.6SYS1.4 is preferred. The cellulose ester having a different degree of substitution of the fluorenyl group may be in the above range as the cellulose ester film as a whole. The portion which is not substituted with the above mercapto group is generally present as a hydroxyl group. These can be synthesized by a known method. The cellulose ester used in the present invention is preferably a number average molecular weight (??) having a mass ratio of from 50,000 to 150,000, and preferably having a number average molecular weight of from 55,000 to 120,000, having a number of from 60,000 to 10,000. The average molecular weight is the best. Further, the cellulose ester used in the present invention is preferably a weight average molecular weight (Mw) / number average molecular weight (?η) ratio of from 1.3 to 5. 5, particularly preferably from 1.5 to 5.0, preferably 1 7 to 4.0, more preferably 2 to 0 to 3.5 cellulose ester. -38 - 200949319 Further, Μη and Mw/Mn can be calculated by gel permeation chromatography from the following method. The measurement conditions are as follows. Solvent: Tetrahydrofuran Unit: HLC-8220 (manufactured by Tosoh Co., Ltd.) Column: TSKgel SuperHM-M (manufactured by Tosoh Co., Ltd.)

Column temperature: 40 ° C q Sample concentration: 〇. 1 mass % Injection amount: 10 μ 1 Flow rate: 0.6 ml/min Calibration curve: Use of standard polystyrene: PS-1 (manufactured by Polymer Laboratories) Proofreading curve for 9 samples with Mw = 2,560,000 to 580. The raw material cellulose of the cellulose ester used in the present invention may be wood pulp or cotton velvet, and the wood pulp may be conifer or broad-leaved tree, but the conifer is better than 0. From the viewpoint of the peeling property at the time of film formation, it is preferable to use cotton velvet. These obtained cellulose esters may be suitably mixed or used alone. For example, a cellulose ester derived from cotton velvet can be used: cellulose ester from wood pulp (coniferous tree): the ratio of cellulose ester from wood pulp (broadleaf tree) is 100: 〇: 〇, 90: 10: 0, 85: 15 : 0, 50: 50 : 0 , 20 : 80 : 0 , 10 : 90 : 0 , 0 : 100 : 0 , 0 : 0 : 100 , 80 : 10 : 10 , 85 : 0 : 15 , 40 : 30 : 30 ° Cellulose ester is, for example, the hydroxyl group of the raw material cellulose is replaced by acetic anhydride, propionic anhydride and/or butyric anhydride according to the usual method, and ethyl acetonitrile, propyl fluorenyl and/or butyl-39-200949319 are substituted in the above range. get. The method for synthesizing the cellulose ester is not particularly limited. For example, it can be synthesized by the method described in JP-A-10-50804 or JP-A-6-501040. The content of the alkaline earth metal of the cellulose ester used in the present invention is preferably in the range of 1 to 5 ppm. When the amount exceeds 50 ppm, the adhesion of the lip to the die may increase or the slitting portion may be easily broken during the heat extension or after the heat extension. It is also easy to break when it is less than 1 ppm, and the reason is not clear. When the amount is less than ippm, the burden of the washing step is too large or too bad. It is preferably in the range of 1 to 30 ppm. The so-called alkaline earth metal is a total content of Ca and Mg, and can be measured by an X-ray photoelectron spectroscopy analyzer (XPS). The residual sulfuric acid content in the cellulose ester used in the present invention is preferably in the range of from 0 to 45 ppm in terms of sulfur element. It can be assumed that they are contained in the form of salt. When the residual sulfuric acid content exceeds 4 5 ppm, the deposit at the lip portion during heat fusion may increase. Moreover, it is not easy to break when slitting during hot stretching or after heat stretching. Less is preferable, but when it is less than 0", not only the burden of the washing step of the cellulose ester is too large, but it is not easy to break. This may affect the resin for an increase in the number of washes but it is not entirely clear. It is preferably in the range of 1 to 3 Oppm. The residual sulfuric acid content can be measured by the method specified in ASTM-D8 17-96. The free acid content of the cellulose ester used in the present invention is preferably from 1 to 500 ppm. When it exceeds 500 ppm, the adhesion of the lip portion increases and it is easily broken. When it exceeds 500 ppm, the deposit of the lip portion increases and it is easily broken. It is difficult to break under the condition of 1 PPm ° -40- 200949319 and 1~100 ppm. It is more difficult to break. It is particularly preferably in the range of 1 to 70 ppm. The free acid content can be determined by the method specified in ASTM-D817-96. When the synthetic cellulose ester is washed and compared with the case of using the solution casting method, the residual acid content can be made into the above range by further sufficiently performing, and when the film is produced by the melt casting method, A film having a reduced adhesion to the lip portion and excellent planarity is obtained, and a film having dimensional change, mechanical strength, transparency, moisture permeability resistance, Rt 値, and R 〇値 is obtained. Further, in addition to water, a cellulose solvent may be used, and a weak solvent such as methanol or ethanol may be used, or a mixed solvent of a weak solvent and a good solvent may be used as a weak solvent to remove inorganic substances other than residual acid. Low molecular organic impurities. Further, the washing of the cellulose ester is preferably carried out in the presence of an antioxidant such as a hindered amine or a phosphite, and the heat resistance and film-forming stability of the cellulose ester can be improved. Further, in order to improve the heat resistance, mechanical properties, and optical properties of the cellulose ester, it is dissolved in a good solvent of the cellulose ester, and then precipitated in a weak solvent to remove low molecular weight components and other impurities of the cellulose ester. In this case, as in the case of washing the cellulose ester, it may be preferably carried out under the presence of an antioxidant. Further, after the reprecipitation treatment of the cellulose ester, other polymers or low molecular compounds may be added. Further, it is preferred that the cellulose ester used in the present invention has a small amount of foreign matter as a film. The bright spot foreign matter is such that two polarizing plates are arranged in a straight line (orthogonal Nicol), and a cellulose ester film is disposed therebetween, and one side is irradiated with a light source, and when the cellulose ester film is observed from the other side, the light of the light source is seen. Leak -41 - 200949319 points. In this case, it is preferable that the polarizing plate used for the evaluation is a protective film having no bright foreign matter, and it is preferable to use a glass plate for the protection of the polarizer. One of the reasons for highlighting foreign matter can be considered to be caused by cellulose which is not vinegarized or low in acetification of cellulose ester, and cellulose ester having less foreign matter is used (the cellulose ester having a smaller degree of substitution is used) In at least one of the process of filtering the molten cellulose ester or the cellulose ester, or the process of obtaining a precipitate, the film can be once in a solution state and the bright spot foreign matter is removed through the filtration step. The molten resin is more efficient because of its higher viscosity. The thinner the film thickness, the smaller the number of bright spots per unit area, and the smaller the content of the cellulose ester contained in the film, the less the bright foreign matter tends to be, but the bright spot foreign matter has a bright spot diameter of 0.01 mm or more and 200 pieces. Those below /cm2 are preferably '100 pieces/cm2 or less, and those of 50 pieces/cm2 or less are better. '30 pieces/cm2 or less are particularly good, and one piece/cm2 or less is excellent. optimal. Further, for bright spots of 0.005 to 0.01 mm or less, it is preferably 200 or less, preferably 1/cm 2 or less, more preferably 50/cm 2 or less, and 30 or less. Excellent, 10/cm2 or less is excellent's best. When the bright foreign matter is removed by melt filtration, the cellulose ester composition after mixing with a plasticizer, a deterioration inhibitor, an antioxidant, or the like is filtered, and the foreign matter is brightened. The removal efficiency is higher and better. Of course, in the synthesis of cellulose ester, it can be reduced by filtration after being dissolved in a solvent. It is also possible to mix the ultraviolet absorber or other additives as appropriate. Filtration is a melt containing cellulose ester -42- 200949319. The viscosity of the melt is below 1 〇〇〇〇Pa_s, preferably below 5000 Pa.s, and preferably below 100 Pa's, 500 Pa. .s below are especially good. As the filter medium, a fluororesin such as glass silicate, cellulose oxime, filter paper or tetrafluoroethylene resin can be preferably used, and ceramics, metals and the like are particularly preferable. The absolute filtration accuracy is preferably 50 μm or less, more preferably 30 μm or less, more preferably 1 〇μηι or less, and most preferably 5 μmη or less. These can be used in combination as appropriate. The filter material can be a surface filter type or a 深度 depth filter type, and the volume filter type is preferable because it is not blocked. In other embodiments, the cellulose ester of the raw material may be dissolved in a solvent at least once, and then the solvent-dried cellulose ester may be used. At this time, the dried cellulose ester is dissolved in a solvent together with at least one type of plasticizer, ultraviolet absorber, deterioration inhibitor, antioxidant, and matting agent. As the solvent, dichloromethane, methyl acetate or dioxolane can be used, which is equal to the good solvent used in the solution casting method, and a weak solvent such as methanol, ethanol or butanol can be used. It can be cooled to below -20 °C or heated to above 80 °C during the dissolution process. When such a cellulose ester is used, it is easy to uniformly mix the respective additives in a molten state, and the optical characteristics can be made uniform. The optical film of the present invention may be one which is suitably mixed with a high molecular component other than a cellulose ester. The polymer component to be mixed is preferably one which is excellent in compatibility with a cellulose ester, and the transmittance in the case of a film is 80% or more, preferably 90% or more, more preferably 92% or more. <<Antioxidant>> The resin which becomes the substrate of the optical film of the present invention not only promotes its decomposition by heat but also by oxygen, so that the optical film of the present invention contains an antioxidant as a stabilizer. It is better. In particular, in a high-temperature environment in which a melt film is formed, since it is accelerated by the heat of the film forming material and oxygen, it is preferable to contain an antioxidant. Further, in the cellulose ester of the preferred embodiment of the present invention, it is also preferred to carry out washing in the presence of an antioxidant in the case of suspension washing with a weak solvent. The antioxidant to be used may be a compound which can inactivate the radical generated by the cellulose ester or inhibit the deterioration of the cellulose ester caused by the addition of oxygen to the radical generated by the cellulose ester. There is no particular limitation. The antioxidant used in the suspension washing of the cellulose ester may also remain in the cellulose ester after washing. The residual amount is preferably 0.01 to 2000 ppm, more preferably 0_05 to 1000 ppm, still more preferably 0.1 to 100 ppm. The antioxidant which is useful in the present invention is not particularly limited as long as it can suppress deterioration of the film forming material by oxygen, and examples of useful antioxidants include phenolic compounds, hindered amine compounds, and phosphorus. A compound, a sulfur-based compound, a lactone-based compound, an acrylate-based compound, an oxygen scavenger, and the like are preferable, and among them, a hindered phenol-based compound, a phosphorus-based compound, a lactone-based compound, and an acrylate-based compound are particularly preferable. By adding these compounds, transparency, heat resistance and the like are not lowered, and coloring or strength reduction of the molded body due to deterioration by heat or thermal oxidation or the like can be prevented. These antioxidants can be used individually or in combination of 2 or more types. (Phenolic Compound) As one of the useful antioxidants used in the present invention, a phenolic compound -44 - 200949319 is preferred. The phenolic compound is a known compound, and is contained in the 2,6-dialkylphenol derivative compound as described in the columns 12 to 14 of the specification of U.S. Patent No. 4,839,405. As a preferred compound among such compounds, a compound represented by the following general formula (A) is preferred.

[化23⁄4, general style {A&gt; R"

Rie ^16 wherein ' represents a hydrogen atom or a substituent. Examples of the substituent include a halogen atom (for example, a fluorine atom or a chlorine atom) and an alkyl group (e.g., methyl group, ethyl group, isopropyl group, hydroxyethyl group, methoxymethyl group, trifluoromethyl group, t-butyl group). Base, etc.), cycloalkyl (eg cyclopentyl, cyclohexyl, etc.), aralkyl hydrazine (eg benzyl, 2-phenylethyl, etc.), aryl (eg phenyl, naphthyl, P-tolyl) , p-chlorophenyl, etc.), alkoxy (eg methoxy 'ethoxy, isopropoxy, butoxy, etc.), aryloxy (eg phenoxy, etc.), cyano, guanamine (e.g., acetaminol, propylamino, etc.), alkylthio (e.g., methylthio, ethylthio, butylthio, etc.), arylthio (e.g., phenylthio) , sulfonamide (eg, methanesulfonamide, benzenesulfonamide, etc.), urea group (eg, 3-methylureido, 3,3-dimethylureido, 13-methylureido) Et.), amidoxime (dimethylamine-activated amine, etc.), aminomethanyl (eg, methylaminomethyl carbaryl, ethylaminomethyl thiol, bis-45-200949319 methylamino) Amidoxime, such as ethylamine sulfonate , dimethylamine sulfonyl, etc.), alkoxycarbonyl (eg methoxycarbonyl, ethoxycarbonyl, etc.), aryloxycarbonyl (eg phenoxycarbonyl, etc.), sulfonyl (eg methyl sulfonate) a mercapto group, a sulfonyl group, a phenylsulfonyl group, etc., a mercapto group (e.g., an ethyl group, a propyl group, a butyl group, etc.), an amine group (a methylamino group, an ethylamino group, a dimethylamino group, etc.), a cyano group, a hydroxyl group, a nitro group, a nitroso group, an amine oxide group (for example, a pyridine-oxide group), an imido group (for example, a quinone group, etc.), a disulfide group (for example, a benzene disulfide group, Benzothiazolyl-2-disulfide group, etc., carboxyl group, sulfo group, heterocyclic group (for example, pyrrolyl, pyrrolidinyl, pyrazolyl, imidazolyl, pyridyl, benzimidazolyl, benzothiazole Base, benzoxazolyl, etc.). These substituents may be further substituted. Further, a phenol-based compound in which Ru is a hydrogen atom and R12 and R16 are t-butyl groups is preferred. Specific examples of the phenolic compound may include η-octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)-propionate, n-octadecyl 3-( 3,5-di-t-butyl-4-hydroxyphenyl)-acetate, η-octadecyl 3,5-di-t-butyl-4-hydroxybenzoate, η-hexyl 3,5-di-t-butyl-4-hydroxyphenylbenzoate, η-lauryl 3,5-di-t-butyl-4-hydroxyphenyl benzoate, neo-lauryl 3 -(3,5-di-t-butyl-4-hydroxyphenyl)propionate, lauryl beta (3,5-di-t-butyl-4-hydroxyphenyl)propionate, ethyl Α-(4-hydroxy-3,5-di-t.butylphenyl)isobutyrate, octadecyl α-(4-hydroxy-3,5-di-t-butylphenyl) Butyrate, octadecyl α-(4-hydroxy-3,5-di-t-butyl-4-hydroxyphenyl)propionate, 2-(η-octylsulfanyl)ethyl 3,5 -di-t-butyl-4-hydroxy-benzoate '2-(η-octylthio)ethyl 3,5-di-t-butyl-4-hydroxy-phenyl acetate, 2 - (η-octadecylthio)ethyl-46- 200949319 3,5-di-t-butyl-4-hydroxyphenyl acetate, 2-( η-octadecylthio) B 3,5-di-t-butyl-4-hydroxy-benzoate, 2-(2-hydroxyethyl Ethyl)ethyl 3,5-di-t-butyl-4-hydroxybenzoate, diethylglycol bis-(3,5-di-t-butyl-4-hydroxy-phenyl)propane Acid ester, 2-( η-octadecylthio)ethyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, stearylamine hydrazine, hydrazine-double - [Extended ethyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], η-butylimine N,N-bis-[stretch ethyl 3-( 3 ,5-di-t-butyl-4-0 hydroxyphenyl)propionate], 2-(2-stearyloxyethylthio)ethyl 3,5-di-t-butyl- 4-hydroxybenzoate, 2-(2-stearyloxyethylthio)ethyl 7-(3-methyl-5-t-butyl-4-hydroxyphenyl)heptanoate, 1,2-propanediol bis-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], ethylene glycol bis-[3-(3,5-di-t- Butyl-4-hydroxyphenyl)propionate], neopentyl glycol bis-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], ethylene glycol double -(3,5-di-t-butyl-4-hydroxyphenylacetate), glycerol-1-η-octadecanoate-2,3-bis-(3,5-di-t- Butyl-4-hydroxyphenyl acetate Q), pentaerythritol bismuth-[3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propane Acid ester], 3,9-bis-{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanyloxy]-1,1-dimethylethyl Base} _2,4,8,10_tetraoxaspiro[5.5]undecane, 1,1,1_trimethylolethane-para-[3-(3,5-di-t-butyl- 4-hydroxyphenyl)propionate], sorbitol hexa-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], 2-hydroxyethyl 7-( 3-methyl-5-t butyl-4-hydroxyphenyl)propionate, 2-stearyloxyethyl 7-(3-methyl-5-t-butyl-4-hydroxyphenyl) )heptanoate, 1,6-n-hexanediol-bis[(3',5'-di-t-butyl-4-hydroxyphenyl)propionate], pentaerythritol oxime (-47- 200949319 3 , 5-di-t-butyl-4-hydroxyhydrocinnamate). As the phenol compound of the above form, for example, "Irganoxl076" and "Irganoxl010" which are commercially available from Ciba Japan Co., Ltd. can be used. (Hindered Amine Compound) One of the useful antioxidants in the present invention is preferably a hindered amine compound represented by the following general formula (B). [Chem. 23] - «Foot

In the formula, R21 to R27 represent a substituent. The substituent is synonymous with the substituent represented by Ru to R15 of the above general formula (A). R24 is preferably a hydrogen atom or a methyl group, R27 is preferably a hydrogen atom, and R22, R23, R25 and R26 are preferably a methyl group. Specific examples of the hindered amine-based compound include bis(2,2,6,6-tetramethyl-4·piperidine)sebacic acid and bis(2,2,6,6-tetramethyl-4). - piperidine) succinate, bis(1,2,2,6,6-pentamethyl-4-piperidine) sebacic acid, bis(N-octyloxy-2,2,6,6-tetramethyl Alkyl-4-piperidine) sebacic acid, bis(N-benzyloxy-2,2,6,6-tetramethyl-4-piperidine)sebacic acid, bis(N-cyclohexyloxy) -2,2,6,6-tetramethyl-4-piperidine) sebacic acid, bis(l,2,2,6,6-pentamethyl-4-48-200949319 piperidine)2-( 3,5-di-t-butyl-4-hydroxybenzyl)-2-butylmalonate, bis(1-propenylfluorenyl-2,2,6,6-tetramethyl-4- Piperidine) 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)-2-butylmalonate, bis ( 1.2.2.6.6-pentamethyl-4 - piperidine) sebacate, 2,2,6,6-tetramethyl-4-piperidine methacrylate, 4-[3-(3,5-di-t-butyl-4-hydroxyl) Phenyl)-propyloxy]-1-[2-(3-(3,5---butyl-4-ylphenyl)propionyloxy)ethyl]-2,2,6 ,6-tetramethylpiperidine, 2-methyl-2-(2.2.6.6-tetramethyl-4-piperidinyl)amino-N-( 2,2,6,6-tetramethyl-4- Piperidine) propylamine, hydrazine (2, 2, 6 ,6-tetramethyl-4-piperidine) 1,2,3,4-butane tetracarboxylate, hydrazine (1,2,2,6,6-pentamethyl-4-piperidine) 1, 2,3,4-butane tetracarboxylate, and the like. Further, it may be a polymer compound, and specific examples thereof include 1^^', &gt;^', :^"'-肆-[4,6-bis-[butyl-(1^-- -2,2,6,6-tetramethylpiperidin-4-yl)amino]-triazin-2-yl]-4,7-diazadecane-1,10-diamine, two Butylamine and 1,3,5-triazine-N,N'-bis(2,2,6,6-tetramethyl-4-piperidine)-1,6-hexamethyldiamine and N a polycondensate of -(2,2,6,6-tetramethyl-4-piperidine)butylamine, dibutylamine and 1,3,5-triazine with N,N'-bis (2, Polycondensate of 2,6,6-tetramethyl-4-piperidine)butylamine, poly[{(1,1,3,3-tetramethylbutyl)amino-1,3,5- Triazine-2,4-diyl} {(2.2.6.6-tetramethyl-4-piperidine)imine}hexamethyl{(2,2,6,6-tetramethyl-4-piperidine) Imine}], 1,6-hexanediamine-N,N'-bis(2,2,6,6-tetramethyl-4-piperidine) and morpholine-2,4,6-trichloro -1,3,5-three-exposed polycondensate, poly[(6-morpholino-3-triazine-2,4-diyl)[(2,2,6,6,-tetramethyl- 4-piperidine)imine]-hexapylmethyl[(2,2,6,6-tetramethyl-4-piperidine)imide] -49- 200949319] The piperidine ring is a triazine skeleton High molecular weight combined with complex numbers HALS: a polymer of dimethyl succinate and 4-hydroxy-2,2,6,6-tetramethyl-1·piperidine, and 1,2,3,4-butanetetracarboxylic acid and 1, 2,2,6,6-pentamethyl-4-decyl alcohol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)_2,4,8,1〇-tetraoxine a compound in which a piperidine ring such as a mixed ester of snail [5,5]~\--alkane is bonded to an ester bond, but is not limited thereto. Among them, dibutylamine and 1,3 are also used. Polycondensation of 5-triazine with ν,Ν'-bis(2,2,6,6-tetramethyl-4-piperidine)butylamine, poly[{( 1,1,3,3 -4) Methylbutyl)amino-1,3,5-triazine-2,4-diyl} {(2,2,6,6-tetramethyl-4-piperidine)imide}hexamethyl { (2,2,6,6-tetramethyl-4-piperidine)imine}], dimethyl succinate and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidine The polymer of ethanol or the like preferably has a number average molecular weight (?n) of 2,000 to 5,000. The hindered amine compound of the above form, for example, "Tinuvinl 44" and "TinUvin 770" which are commercially available from Ciba Japan Co., Ltd., are limited by shares. The trade name of "ADK STAB LA-52" purchased by the company ADEKA. (Phosphorus compound) as the hair One of the useful antioxidants in the present invention is a phosphorus compound selected from the group consisting of phosphite, phosphonite, phosphinite, or phosphane. Preferably, it is preferably a compound having a partial structure represented by the following general formulas (Cl), (C-2), (C-3), (C-4), or (C-5) in the molecule. -50- 200949319 [Chem. 24] —J» Formula (c, 1)

Where 'Phi and Ph’! Represents a substituent. The substituent is synonymous with the substituent represented by Rli to Rl5 of the above formula (A). Preferred

Ph Μ represents a phenyl group. The hydrogen atom of the phenyl group may be a phenyl group, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an alkylcycloalkyl group having 6 to 12 carbon atoms or carbon. Substituted by 7 to 12 aralkyl groups. ? 1^ and ph, i may be the same or different from each other. X represents a single bond, a sulfur atom or a -CHR6- group. R6 represents a hydrogen atom, a hospital group having a carbon number of 1 to 8, or a ring-yard group having a carbon number of 5 to 8. Further, it may be substituted by a substituent which is synonymous with the substituent represented by Rn to R15 of the above general formula (A). In the formula (G-2), Ph2 and Ph'2 represent a substituent. The substituent is synonymous with the substituent represented by the above-mentioned general formula (A) to R15. Preferably, Ph2 and Ph'2 represent a phenyl group or a biphenyl group, and the hydrogen atom of the phenyl group or biphenyl group may be an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, and a carbon number of 6 to 8. 12 alkyl-51 - 200949319 substituted by a ring or a number of 7 to 12 aralkyl groups. Ph2 and Ph, 2 may be the same or different from each other. Further, it may be substituted with a substituent which is synonymous with the substituent represented by Rii to Rl5 of the above general formula (A). [Chem. 26]

General formula (&lt;? a 3J

Wherein ' Ph denotes a substituent. The substituent is synonymous with the substituent represented by Rii to Rls of the above general formula (a). Preferably, ph3 represents a phenyl group or a biphenyl group. The hydrogen atom of the phenyl group or biphenyl group may be an alkyl group having a carbon number of from 8 to 8, a cycloalkyl group having a carbon number of 5 to 8, and an alkyl group having a carbon number of from 6 to 12. A cycloalkyl group or a aryl group having a carbon number of 7 to 12 is substituted. Further, it may be substituted with a substituent which is synonymous with the substituent represented by Rn to R1S of the above general formula (a).

W 匕 27] -« (C-4)

Wherein ' Ph4 represents a substituent. As a substituent, the rule of the above general formula (A)! ! The substituents shown in ~Ris are synonymous. Preferably, Ph4 represents an alkyl group having 1 to 20 carbon atoms or a phenyl group which may be substituted with a substituent which has the same meaning as the substituent represented by Rm~ described in the above general formula (A)-52-200949319. [化 28] -HK type {C-5} /h*

Ph β-: Ρ \ © where Ph5 ' Ph' 5 and Ph,, 5 represent a substituent. The substituents represented by Rn to R15 in the above general formula (A) are synonymous with Ph5, Ph'5 and Ph, and 5 represents an alkyl group having a carbon number or a phenyl group or a phenyl group. R11 to Rl5 which are the above general formula (A) Substituted substituents are substituted. Specific examples of the phosphorus-based compound include triphenyl stilbene S-isodecyl phosphite, phenyl diisononyl phosphite phenyl phosphite, and bis(diphenylphenyl). Phosphorous acid® 2,4-di-1-butylphenylphosphite, 10-(3,5-di-t-ylphenyl)-9,1〇-dihydro-9_euse_ 10-phosphaphenanthrene-10_oxide, 34-butyl. 4-hydroxy-5-methylphenyl)propoxy]-2,4,8,1 base, one and [d,f] 〔1, 3,2] a monophosphite compound such as dioxaphosphepine or decaphosphate; 4,4'-butylene-bis6-t-butylphenyl-ditridecylphosphite), 4, 4, a di-subsidiary compound such as 1,3-iso(phenyl-di-alkyl (C12-C15) phosphite); triphenylphosphonite, bismuth (2,4-di-tert-butyl 1,1-linked) Phenyl]-4,4'-diylbisphosphonite, anthracene (2,4-: substituent and .preferably 'the alkyl substituent is the same as the phosphate, 'para (ester, ginseng) 4--4-(3-(anthracene-tetra-t-butyltrialkyl)(3-methyl-propyl-bisphosphate-phenyl)[2-tert-butyl-53- 200949319 -5-methylphenyl)[1,1·biphenyl]- a phosphonite compound such as 4,4'-diylbisphosphonite; a hypophosphite compound such as triphenylphosphite or 2,6-dimethylphenyldiphenylphosphite; a phosphine-based compound such as phenylphosphine or ginseng (2,6-dimethoxyphenyl)phosphine; etc. The phosphorus-based compound of the above form, for example, "Sumilizer GP" available from Sumitomo Chemical Co., Ltd., limited by shares ADK STAB PEP-24G", "ADK STAB PEP-36" and "ADK STAB 3010" purchased by ADEKA, "IRGAFOS P-EPQ" purchased by Ciba Japan Co., Ltd., 堺Chemical Industry Co., Ltd. The trade name of "GSY-P101" is obtained. (Crystal Compound) As one of the useful antioxidants in the present invention, a sulfur compound represented by the following general formula (D) is preferred. D) r31—s-r32 wherein R3 1 and R3 2 represent a substituent, and the substituent is synonymous with the substituent represented by Rm to R15 of the above general formula (A). Specific examples of the sulfur-based compound include Dilauro 3,3-thiodipropionate, dimyristyl 3,3'-thiodipropionate, distearyl 3,3- Thiopropionate, lauryl stearyl 3,3- thiodipropionate, pentaerythritol-54-200949319 alcohol-indole (β-lauryl-thio-propionate), 3,9-double (2-Laurylthioethyl)-2,4,8,10-tetraoxaspiro[5,5]undecane, and the like. The sulfur-based compound of the above-mentioned form is, for example, "Sumilizer TPL-R" and "Sumilizer TP-D" available from Sumitomo Chemical Co., Ltd., which is a trade name (acrylic compound) as a useful antioxidant in the present invention. First, an acrylate-based compound is preferred. Specific examples of the acrylate-based compound include 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylbenzyl group -4-methylphenyl acrylate, 2-[1-(2-hydroxy-3,5-di-tert-pentylphenyl)ethyl]-4,6-di-tert-pentylphenyl Acrylate-based compound such as acrylate. The acrylate-based compound of the above-mentioned form is, for example, a product name of "Sumilizer GM" and "Sumilizer GS" which are commercially available from Sumitomo Chemical Co., Ltd. (Lactone-based compound) is useful as the present invention. One of the antioxidants is preferably a lactone-based compound. Specific examples of the lactone-based compound include 3-[4-(2-acetoxyethoxy)phenyl]-5,7-di-3rd Benzofuran-2-one, 5,7-di-t-butyl-3-[4-(2-stearyloxyethoxy)phenyl]benzo喃-2-one, 3,3,-bis[5,7-di-t-butyl-3-(4-[2-hydroxyethoxy]phenyl)benzofuran-2-one], 5, 7-di-tert-butyl-3-(4-methoxy-55-200949319 phenyl)benzofuran-2-one, 5,7-di-t-butyl-3-phenylbenzofuran _ 2 -嗣,5,7 - _•Secondyl-4-methyl-3-phenylbenzoin-2-one, 3-(4-acetoxy-3,5-dimethylphenyl)- 5,7-di-t-butylbenzofuran-2-one, 3-(3,5-dimethyl-4-trimethylethenyloxyphenyl)_5,7-di-t-butyl Benzofuran-2-one, 3-(3,4-dimethylphenyl)-5,7-di-t-butylbenzofuran-2-one, 3-(2,3-dimethylbenzene A benzofuranone compound such as -5,7-di-t-butyl-benzofuran-2-one, etc. The lactone-based compound of the above form is, for example, "HP" available from Ciba Japan Co., Ltd. The product name of -136". The antioxidant is preferably the same as the cellulose ester, and may be contained in the production, such as residual acid, inorganic salt, organic low molecular weight, etc., preferably 99% pure. Above. As residual acid and water, 〇.〇i It is preferable that 10Oppm is preferable, and the cellulose ester is melt-formed to suppress thermal deterioration, and film stability, film physical properties, and mechanical properties can be improved. For the present invention, these antioxidants are added to the resin. 1 to 10% by mass is preferable, and 0.1 to 5% by mass is preferably added, and more preferably 0.2 to 2% by mass. These two or more types can be used together. When the amount of the antioxidant added is too small, the stability at the time of melting is lowered, so that the effect cannot be obtained. When the amount of addition is too large, the transparency of the film is lowered from the viewpoint of the compatibility with the cellulose ester. The film will become brittle and therefore not good. "Acid scavenger" Cellulose ester is decomposed by acid in a high-temperature environment in which a melt film is formed, and it is preferable to contain an acid trapping agent as the stabilizer for the optical film of the present invention. As a useful acid scavenger in the present invention, it is only possible to react with an acid to make the acid inactive, and it has an epoxy group as described in the specification of U.S. Patent No. 4,1 37,20 1 . The compound is preferred. Epoxy compounds as such acid scavengers are known in the art and contain diglycidyl ethers for various polyglycols, especially per 1 gram of polyglycol, by about 8 to 40 moles. Polyethylene glycol derived from condensation of ethylene oxide, diglycidyl ether of glycerin, etc., metal epoxy compound (for example, in a chlorinated vinyl polymer composition, and a chlorinated vinyl polymer composition) Used in the past, epoxidized ether condensation product, bisphenol A diglycidyl ether (ie, 4,4'-dihydroxydiphenyldimethylmethane), epoxidized unsaturated fatty acid ester (especially an ester of an alkyl group of 4 to 2 carbon atoms of a fatty acid having 2 to 22 carbon atoms (for example, butyl epoxy stearate), and various epoxidized long-chain fatty acid triglycerides) Compositions such as epoxidized soybean oil, epoxidized linseed oil, etc., as representative of the exemplified 0 epoxidized vegetable oils and other unsaturated natural oils (sometimes referred to as epoxidized natural glycerides or unsaturated fatty acids, these Fatty acids generally contain 12 to 22 carbon atoms. Further, as the epoxy group-containing epoxide resin compound for sale, EPON 815C and other epoxidized ether oligomer condensation products of the following general formula (E) can be used. -57- 200949319 [Chem. 30] General formula (E)

In the formula, n is an integer of 〇~12. Other acid scavengers which can be used include those described in paragraphs 87 to 105 of JP-A-2005-947-8. The acid scavenger is preferably added in an amount of 0.1 to 10% by mass, more preferably 0.2 to 5% by mass, more preferably 0.5 to 2% by mass. Two or more of them can be used. Further, the acid scavenger is sometimes referred to as an acid scavenger, an acid scavenger, an acid scavenger or the like for the resin, but these are used in the present invention without any difference. "Ultraviolet absorbing agent" 〇 The ultraviolet absorbing agent is excellent in ultraviolet absorbing energy at a wavelength of 3 7 Onm or less from the viewpoint of preventing deterioration of ultraviolet rays of a polarizer or a display device, 'from the viewpoint of liquid crystal display property, Less absorption of visible light having a wavelength above 40 Onm is preferred. Examples of the ultraviolet absorber used in the present invention include an oxybenzophenone-based compound, a benzotriazine-based compound, a salicylate-based compound, a benzophenone-based compound, and a cyanoacrylate-based compound. A nickel-salt-based compound or a triazine-based compound is preferred, but a benzophenone-based compound or a less-colored benzotriazole-based compound or a triazine-based-58-200949319 compound is preferred. Further, it is possible to use the ultraviolet absorber described in Japanese Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The polymer ultraviolet absorber described. Specific examples of the benzotriazole-based ultraviolet absorber include 2-( 2'-hydroxy-5'-methylphenyl)benzotriazole and 2-(2'-hydroxy-3',5. -di-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-3'-tert-butyl-5,-methylphenyl)benzotriazole, 2-(2'- Hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole, 2 - ( 2 '-hydroxy-3 ' - ( 3 ′,4 ′′,5 ”,6 ” - Tetrahydroindenidomethyl)-5'-methylphenyl)benzotriazole, 2,2-extended methyl bis(4-(1,1,3,3-tetramethylbutyl) -6-(2H-benzotriazol-2-yl)phenol), 2-(2'-hydroxy-3'461:dibutyl-5'-methylphenyl)-5-chlorobenzotriazole, 2 -(2'-hydroxy-3,7-1,4-dibutyl-5,-(2-octyloxycarbonylethyl)-phenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-3 '-(l-Methyl-1-phenylethyl)-5'-(1,1,3,3-tetramethylbutyl)-phenyl)benzotriazole, 2-(2H-benzo Triazol-2-yl)-6-(linear and side chain lauryl)-4-methylphenol, octyl-3-[3-tert-butyl-4-hydroxy-5-(chloro-2H- Benzotriazol-2-yl)phenyl]propionate with 2-B Cyclohexyl-3- [3-tert- butyl-4-hydroxyphenyl Ki - 5- (5-chloro -2H- benzotriazol-2-yl) phenyl] mixture of propionate apos but not limited thereto. Further, as a commercial product, TINUVIN 171, TINUVIN 900, TINUVIN 928 ' TINUVIN 360 C are all manufactured by Ciba Japan Co., Ltd., LA 31 (manufactured by ADEKA Co., Ltd.), and RUVA-100 (manufactured by Otsuka Chemical Co., Ltd.). -59-200949319 Specific examples of the benzophenone-based compound include 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, and 2-hydroxyl group. -4-methoxy-5-sulfobenzophenone, bis(2-methoxy-4.hydroxy-5.benzimidylphenylmethane), and the like are not limited thereto. In the present invention, the ultraviolet absorber is preferably added to the resin in an amount of from 1 to 5 % by mass, more preferably from 0.2 to 3 % by mass, most preferably from 5% to 5% by mass. These can be used in two or more types. Further, the benzotriazole structure or the triazine structure may be a part of the polymer or a side chain which is regularly a polymer, and may be introduced into other additives such as a plasticizer, an antioxidant, an acid sweeping agent, and the like. Part of the molecular structure. The ultraviolet ray-absorbing polymer which is known in the art is not particularly limited, and examples thereof include a polymer obtained by separately polymerizing RUVA-93 (manufactured by Otsuka Chemical Co., Ltd.), and a polymer obtained by copolymerizing RUVA-93 with another monomer. Specifically, PUVA-30M copolymerized with RUVA-93 and methyl methacrylate at a ratio of 3:7 (mass ratio), PUVA-50M copolymerized at a ratio of 5:5 (mass ratio), etc. . Further, a polymer or the like described in JP-A-2003-113317 can be cited. <<Plasticizer>> In the production of the optical film of the present invention, it is preferred to add at least one plasticizer to the film forming material. The plasticizer is an additive which is generally added to a polymer to improve the fragility or impart a softening effect. For example, for the cellulose ester of the preferred form of the present invention, the melting temperature is lowered more than the melt temperature alone. The temperature is -60-200949319, and the plasticizer is added at a same heating temperature to lower the melt viscosity of the material of the constituent film containing the plasticizer. Further, it is intended to improve the hydrophilicity of the cellulose ester and to improve the moisture permeability of the optical film, and to function as a moisture permeability preventing agent.

Here, the "melting temperature" of the material constituting the film means a temperature at which the material exhibits a fluidity state after heating. In order for the cellulose ester to melt flow, it must be heated at least to a temperature higher than the glass transition temperature. When the temperature is above the glass transition temperature, the modulus of elasticity or viscosity is lowered by heat absorption, and fluidity is exhibited. However, at the same time, the cellulose ester is reduced in molecular weight due to melting and thermal decomposition at the same time, and the mechanical properties of the obtained film are adversely affected. Therefore, it is necessary to melt the cellulose ester at a reduced temperature as much as possible. To reduce the melting temperature of the material constituting the film, a plasticizer having a melting point or a glass transition temperature lower than the glass transition temperature of the cellulose ester can be added. The optical film according to the present invention is an optical film characterized by a plasticizer preferably having 1 to 25% by mass of Q. When the amount is less than 1% by mass, the planarity improving effect is not obtained. When the amount is more than 25% by mass, leakage is likely to occur, and the stability of the film with time is lowered, which is not preferable. An optical film having a plasticizer content of from 3 to 20% by mass, more preferably an optical film of from 5 to 15% by mass, is preferred. In the present invention, an ester-based plasticizer composed of an ester-based plasticizer, a polyvalent carboxylic acid and a monohydric alcohol formed from a polyhydric alcohol and a monocarboxylic acid is preferred because it has a high affinity with a cellulose ester. The example of the polyol used as a raw material of the preferred ester-based plasticizer of the present invention is, for example, the following, but the present invention is not limited thereto. Examples thereof include ribitol, arabitol, ethylene glycol, glycerin, diglycerin, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,2-propanediol, hydrazine, 3-propanediol, dipropylene glycol, and trisole. Propylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, dibutylene glycol, 1,2,4-butanetriol, 1,5-pentanediol, ι ,6-hexanediol, hexanetriol, galactitol, mannitol, 3-methylpentane-1,3,5-triol, pinacol, sorbitol, trimethylolpropane, double Trimethylolpropane, trimethylolethane, pentaerythritol, dipentaerythritol, xylitol, and the like. In particular, ethylene glycol, glycerin or trimethylolpropane is preferred. Examples of the glycol ester-based plasticizer which is one of the polyol esters include ethylene glycol alkyl ester plasticizers such as ethylene glycol diacetate and ethylene glycol dibutyrate, and ethylene glycol II. Ethylene glycol cycloalkyl ester plasticizers such as cyclopropyl carboxylate and ethylene glycol bicyclohexacarboxylate, ethylene glycol dibenzoate, ethylene glycol di 4-methylbenzoate, etc. A diol aryl ester is a plasticizer. These alkylate groups, cycloalkylate groups, polyaryl groups may be the same or different or may be substituted. Further, it may be a mixture of an alkylate group, a cycloalkylate group or a polyaryl group, and these substituents may be covalently bonded to each other. The ethylene glycol moiety may also be substituted, and the partial structure of the ethylene glycol ester may be one part of the polymer or regularly become a side chain, and may be introduced into an additive such as an antioxidant, an acid sweeping agent, or an ultraviolet absorber. Part of the molecular structure. A glyceride-based plasticizer which is one of polyhydric alcohol esters, specifically, a glyceryl ester such as triacetin, glyceryl tributyrate, glyceryl diacetate caprylate or glyceryl propionate, and glycerol Vinyl cycloalkyl esters such as cyclopropyl carboxylate and glycerol tricyclohexyl carboxylate, glycerol tribenzoate, glycerol 4-methyl-62- 200949319 benzoic acid ester and the like, diglycerin Acetate, diglycerin tetrapropionate, diglycerin acetate tricaprylate, diglycerin tetralaurate, etc. diglyceryl alkyl ester, diglyceryl tetracyclobutyl carboxylate, diglycerol tetracyclopentane A diglyceryl aryl ester such as a diglycerol cycloalkyl ester such as a carboxylic acid ester or a diglycerin tetrabenzoate or a diglycerin 3-methyl benzoate. These alkylate groups, cycloalkyl carboxylate groups, polyaryl groups may be the same or different, or may be further substituted. It may be an alkylate group, a cycloalkyl carboxylate group, or a polyaryl group. The mixed Q groups of the substituents, or these substituents, may be covalently bonded to each other. Further, the glycerin and the diglycerin moiety may be substituted, and the partial structure of the glyceride or the diglyceride may be a part of the polymer, or may be a side chain regularly, or may be introduced into an additive such as an antioxidant, an acid sweeping agent, or an ultraviolet absorber. Part of the molecular structure. Specific examples of the other polyol ester-based plasticizers include the polyol ester-based plasticizers described in paragraphs 30 to 33 of JP-A-2003-12823. These alkylate groups, cycloalkyl carboxylate groups, and polyaryl groups may be the same or different and may be further substituted. Further, it may be a mixture of an alkylate group, a cycloalkylcarboxylate group, or a polyaryl group, or these substituents may be covalently bonded to each other. Further, the polyol portion may be substituted, and the partial structure of the polyol may be a part of the polymer, or a side chain regularly, or a molecular structure introduced into an additive such as an antioxidant, an acid sweeping agent, or an ultraviolet absorber. Part. Among the ester-based plasticizers of the above-mentioned polyol and monocarboxylic acid, an alkyl polyol aryl ester is preferred, and specific examples thereof include the above-mentioned ethylene glycol dibenzoate, glycerin tribenzoate, and The exemplified compound 16 is described in the work of the glycerol tetrabenzoate, the pentaerythritol tetrabenzoic acid vinegar, and the paragraph 3 of the Japanese Patent Publication No. 2003-1282. -63-200949319 The dicarboxylic acid ester-based plasticizer which is one of the polycarboxylic acid esters is specifically an alkyl group such as dilauryl malonate, dioctyl adipate or dibutyl sebacic acid. Alkyl dicarboxylic acid cycloalkyl ester plasticizer such as a dicarboxylic acid alkyl ester plasticizer, dicyclopentyl succinate or dicyclohexyl adipate, diphenyl succinate, di 4-methyl Alkyl dicarboxylate aryl esters such as phenyl glutarate, dihexyl-1,4-cyclohexanedicarboxylate, dimercaptobicyclo[2.2.1]heptane·2,3 a cycloalkyldicarboxylic acid alkyl ester-based plasticizer such as a dicarboxylic acid ester, dicyclohexyl-1,2-cyclobutanedicarboxylate, dicyclopropyl-1,2-cyclohexyldicarboxylate Ring of an isocycloalkyl dicarboxylic acid cycloalkyl ester plasticizer, diphenyl-1,1-cyclopropyldicarboxylate, di-2-naphthyl-1,4-cyclohexanedicarboxylate Alkyl dicarboxylate aryl plasticizer, diethyl phthalate, dimethyl phthalate, dioctyl phthalate, dibutyl phthalate, di-2-ethylhexyl decanoate Aryl aryl dicarboxylate plasticizer, dicyclopropyl phthalate, dicyclohexyl decanoate, etc. Acid cycloalkyl ester based plasticizer, diphenyl phthalate, di-4-methylphenyl phthalate and the like aryl dicarboxylic acid aryl ester based plasticizer. These alkoxy groups and cycloalkoxy groups may be the same or different and may be monosubstituted, and these substituents may be further substituted. The alkyl group, the cycloalkyl group may be a mixture, or these substituents may be bonded to each other. Further, the aromatic ring of phthalic acid may be substituted, and may be a polymer such as a dimer, a trimer or a tetramer. The partial structure of the phthalate may be a part of the polymer, or may be a side chain of the polymer regularly, or may be introduced into a molecular structure of an additive such as an antioxidant, an acid sweeping agent, or an ultraviolet absorber. a part. Specific examples of the other polycarboxylic acid ester-based plasticizer include alkyl lauryl tricarboxylate, tributyl-mes-butane-1, 2, 3, #-tetracarboxylic acid ester and the like. Alkyl carboxylate-based plasticizer, tricyclohexyltricarboxylate, tricyclopropyl-2-hydroxy-1,2,3-propane tricarboxylate, alkyl polycarboxylate cycloalkyl ester plasticizer , an alkyl carboxylic acid aryl ester such as triphenyl 2-hydroxy-1,2,3-propane tricarboxylate or tetrakis 3-methylphenyltetrahydrofuran-2,3,4,5-tetracarboxylate a plasticizer, tetrahexyl-1,2,3,4-cyclobutane tetracarboxylate, tetrabutyl-1,2,3,4-cyclopentane tetracarboxylate, etc. a base-based plasticizer, a cycloalkyl-polycarboxylate such as tetracyclopropyl-1,2,3,4-cyclobutanetetracarboxylate or tricyclohexyl-1,3,5-cyclohexyltricarboxylic acid Acid cycloalkyl ester plasticizer, triphenyl-1,3,5-cyclohexyltricarboxylate, hexa-methylphenyl-1,2,3,4,5,6-cyclohexylhexacarboxylate Cycloalkyl polycarboxylate aryl esters such as acid esters, trilauryl benzene-1,2,4-tricarboxylate, tetraoctylbenzene-1,2,4,5-tetracarboxylate, etc. Aryl polycarboxylate alkyl ester plasticizer, tricyclopentyl An aryl polycarboxylic acid cycloalkyl ester such as benzene-1,3,5-tricarboxylate or tetracyclohexylbenzene-1,2,3,5-tetracarboxylate is a plasticizer triphenylbenzene·1. An aryl polycarboxylate aryl ester plasticizer such as 3,5-tetracarboxylate or hexa-methylphenylbenzene-1,2,3,4,5,6-hexacarboxylate. These alkoxy groups, cycloalkoxy groups may be the same or different, or 1 substituted, or these substituents may be further substituted. The alkyl group, the cycloalkyl group may be a mixture, or these substituents may be covalently bonded to each other. The aromatic ring of phthalic acid may also be substituted, and may also be a polymer such as a dimer, a trimer or a tetramer. Further, the partial structure of the phthalate may be a part of the polymer, or a side chain which regularly becomes a polymer, or may be introduced into a molecular structure of an additive such as an antioxidant, an acid sweeping agent, or an ultraviolet absorber. a part. Among the ester-based plasticizers of the above polyvalent carboxylic acid and monohydric alcohol, an alkyl dicarboxylate is preferred, and specifically, the above dioctyl adipate is mentioned. • 65-200949319 Other plasticizers used in the present invention include a phosphoric acid vinegar plasticizer, a carbohydrate ester plasticizer, a polymer plasticizer, and the like. Specific examples of the phosphate-based plasticizer include alkyl phosphate such as triethyl phosphonium citrate or tributyl phosphate, cycloalkyl phosphate such as tricyclopentyl phosphate and cyclohexyl p-acid ester, and triphenyl group. Phosphate ester, cresol phosphate, formamyl phenyl phosphate, octyl diphenyl phosphate, diphenyl biphenyl phosphate, trioctyl phosphate, tributyl phosphate, trinaphthyl phosphate, An aryl phosphate such as tris(dimethylphenyl)phosphate or para-phenylphosphonate. These substituents may be the same or different and may be substituted. Further, it may be an alkyl group, a ring-based group, a mixture of aryl groups, or a substituent which may be covalently bonded to each other. Further, an alkyl bis(dialkyl phosphate), an extended ethyl bis(diphenyl phosphate) such as ethyl bis(dimethyl phosphate) or butyl bis (diethyl phosphate) may be mentioned. , propyl bis(dinaphthyl phosphate), etc. alkyl bis(diaryl phosphate), phenyl bis(dibutyl phosphate), diphenyl bis (dioctyl phosphate) Iso-aryl bis(dialkyl phosphate), phenyl bis(diphenyl phosphate), naphthyl bis(xylmethyl phosphate) and the like aryl bis(diaryl phosphate) Phosphate ester. These substituents may be the same or different and may be substituted. Further, it may be a mixture of an alkyl group, a cycloalkyl group, an aryl group, or a substituent which may be covalently bonded to each other. Further, the partial structure of the phosphate ester may be a part of the polymer, or a regular side chain, or a part of the molecular structure introduced into the antioxidant 'acid sweeping agent, ultraviolet absorber or the like. Among the above compounds, an aryl phosphate or an aryl bis(diaryl phosphate) is preferred, and specifically, a triphenyl phosphate or a phenyl bis(diphenyl phosphate) is preferred. -66- 200949319 Secondly, the description is given for the carbohydrate ester plasticizer. The carbohydrate is a monosaccharide, a disaccharide or a trisaccharide in which the sugar is in the form of pyranose or furanose (6-membered ring or 5-membered ring). Non-limiting examples of the carbohydrate include glucose, sucrose, lactose, cellobiose, mannose, xylose, ribose, galactose, arabinose, fructose, sorbose, ribose, and raffinose. The carbohydrate hydrate is a compound in which a hydroxyl group of a carbohydrate and a carboxylic acid are dehydrated and condensed to form an ester compound, and specifically, a fatty φ group carboxylic acid ester or an aromatic carboxylic acid ester of a carbohydrate. Examples of the aliphatic carboxylic acid include acetic acid and propionic acid. Examples of the aromatic carboxylic acid include benzoic acid, toluic acid, and anisic acid. The number of hydroxyl groups of the carbohydrate differs depending on the type, but a part of the hydroxyl group may react with the carboxylic acid to form an ester compound, or all of the hydroxyl group may react with the carboxylic acid to form an ester compound. In the present invention, it is preferred to form an ester compound by reacting all of the hydroxyl groups with a carboxylic acid. Specific examples of the carbohydrate adduct type plasticizer include glucose pentaacetic acid 0 ester, glucose pentapropionate, glucose pentabutyrate, sucrose octaacetate, and sucrose octabenzoate, among which sucrose is eight. Acetate and sucrose octabenzoate are preferred, and sucrose octabenzoate is particularly preferred. Examples of such a compound are as follows, but the present invention is not limited to them. Monobit SB: Monopoly SOA made by First Industrial Pharmaceutical Co., Ltd.: The first industrial pharmaceutical company is made of a polymer plasticizer, specifically, an aliphatic hydrocarbon-based polymer, an alicyclic hydrocarbon-based polymer, and a polypropylene. Ethyl acetate, polymethyl propylene -67- 200949319 Copolymer of methyl ester, methyl methacrylate and 2-hydroxyethyl methacrylate (for example, copolymerization ratio 1 ·· 9 9~9 9 : a vinyl polymer such as an acrylic polymer, a polyvinyl isobutyl ether or a poly N-vinyl pyrrolidone, or a styrene polymer such as polystyrene or poly-4-hydroxystyrene at any ratio between 1 and Polyether such as polybutylene succinate, polyethylene terephthalate, polyethylene naphthalate, polyether such as polyethylene oxide or polypropylene oxide, polyamine, polyurethane, polyurea, etc. . The number average molecular weight is preferably from 1,000 to 500,000, particularly preferably from 5,000 to 200,000. When it is less than 1,000, the problem of volatility is generated. When it exceeds 500,000, the plasticizing ability is lowered, which has a bad influence on the mechanical properties of the optical film. . These polymer plasticizers may be individual polymers formed from one repeating unit, or may be copolymers having a plurality of repeating structures. Two or more kinds of the above polymers may be used in combination. The amount of the other plasticizer added is usually 0.1 to 50 parts by mass, preferably 1 to 30 parts by mass, more preferably 3 to 15 parts by mass, per 100 parts by mass of the cellulose ester. In the optical film of the present invention, an ester-based plasticizer composed of a polyhydric alcohol and a monocarboxylic acid, an ester-based plasticizer composed of a polyvalent carboxylic acid and a monohydric alcohol is preferably contained in an amount of from 1 to 25% by mass, and may be contained in the optical film of the present invention. Use a plasticizer other than this. For the optical film of the present invention, an ester-based plasticizer composed of a polyhydric alcohol and a monocarboxylic acid is more preferable, and an ester-based plasticizer having a trivalent or higher alcohol and a monovalent carboxylic acid is used for the cellulose ester. It has high compatibility and can be added at a high addition rate. Therefore, even if other plasticizers or additives are used, no leakage will occur. It is preferable to use other plasticizers or additives as necessary. Further, when the optical film of the present invention has an effect on the optical use of -68-200949319, it is preferable that the yellowness (yellow index YI) is 3.0 or less, preferably 1.0 or less. 'Yellowness can be based on JIS- K7103 was measured. "Matting Agent" A matting agent can be added to the optical film of the present invention in order to impart a smoothness or an optical or mechanical function. Examples of the matting agent include fine particles of an inorganic compound or fine particles of an organic compound. The shape of the matting agent may be a spherical shape, a rod shape, a needle shape, a layer shape, a flat shape or the like. Examples of the matting agent include metals such as cerium oxide, titanium oxide, aluminum oxide, zirconium oxide, calcium carbonate, clay, talc, calcined calcium citrate, calcium citrate hydrate, aluminum citrate, magnesium citrate, and calcium phosphate. Inorganic fine particles such as oxides, phosphates, citrates, and carbonates or crosslinked polymer fine particles. Among them, it is also preferable to use cerium oxide to reduce the haze of the film. It is preferable that these fine particles can be surface-treated by an organic substance because the haze of the film can be lowered. The surface treatment is preferably carried out with a halogenated alkane, an alkoxydecane, a hydrazine nitrogen, a decane or the like. The larger the average particle diameter of the fine particles, the larger the smoothness effect, and the more the average particle diameter is, the better the transparency is. Further, the average particle diameter of the primary particles of the fine particles is in the range of 〇.〇1 to 1.0 μm. Preferably, the primary particles have an average particle diameter of 5 to 50 nm, more preferably 7 to 14 nm. The microparticles on the surface of the optical film can form embossments of 〇.〇1~Ι.Ομιη, which is preferable.

Examples of the fine particles of cerium oxide include AEROSIL (AEROSIL) AEROSIL (AEROSIL) 200, 200V, 300, R9 7 2, R 9 72 V -69- 200949319, R974, R202, R812, 0X50, TT600. NL-P10, KE-P30, KE-P100, KE-P150, etc., such as NAX50, are preferably AEROSIL200V, R972V, NAX50, KE-P30, KE-P1 00. These fine particles can be used in combination of two or more kinds. When two or more types are used, they can be mixed at any ratio and used. The fine particles having an average particle diameter or a different material are used, for example, in a range of a mass ratio of AEROSIL 200V to R9 7 2V of 0.1: 99.9 to 99.9: 0.1. The method of adding these matting agents may preferably be carried out by kneading or the like. Further, in another embodiment, the matting agent previously dispersed in the solvent and the resin and/or the plasticizer and/or the antioxidant and/or the ultraviolet absorber are mixed and dispersed, and then the solvent is volatilized or precipitated to obtain a solid matter, and this is used. In the production process of the resin melt, it is preferred from the viewpoint that the matting agent can be uniformly dispersed in the resin. In order to improve the mechanical, electrical, and optical properties of the film, the above-mentioned matting agent can be added. Further, 'the addition of these fine particles improves the smoothness of the obtained film, but increases the haze when added. Therefore, the content of the resin is preferably 0.001 to 5% by mass, preferably 0.005 to 1% by mass, based on the resin. More preferably 0.0 1 to 0 · 5 mass%. Further, as the optical film of the present invention, when the haze exceeds 1.0%, it is affected as an optical material, and it is preferable that the haze is less than 1.0%, preferably less than 0.5%. The smog can be measured according to: π s _K7 1 3 6 . The material constituting the film requires less or no generation of volatile components in the melting and film forming steps. This foaming upon heating and melting can reduce or avoid the defects of the film or the planarity of the surface of the film. The content of the volatile component in the material constituting the film at the time of melting is 1% by mass or less, preferably 0.5% by mass or less, more preferably 0.2% by mass. The following 'best is 0.1% by mass or less. In the present invention, a differential weight measurement device (TG/DTA200 manufactured by Seiko Instruments Inc.) is used to obtain a heating loss from 30 ° C to 25 ° C, and the amount thereof is a content of a volatile component. The material constituting the film to be used is preferably a volatile component represented by the above-mentioned water or the solvent or the like before or during heating. The removal method can be carried out by a heating method such as a known drying method, a reduced pressure method, a heating and decompression method, or the like, or in an air or an inert atmosphere of nitrogen as an inert gas. When these known drying methods are carried out, the quality of the film can be improved when it is carried out in a temperature region where the material constituting the film does not decompose. When drying is carried out before the film formation, the generation of the volatile component can be reduced, and the resin can be separated into a mixture or a mixture of at least one of the resin and the resin and the material constituting the film, and then dried. The drying temperature is preferably 70 ° C in Q. When a material having a glass transition temperature is present on the dried material, heating to a drying temperature higher than the glass transition temperature makes it difficult to handle the material or melt, so the drying temperature is preferably at or below the glass transition temperature. When the complex material has a glass transition temperature, it is based on the glass transition temperature at which the glass transition temperature is low. It is preferably 70 ° C or more, (glass transition temperature - 5 ° ° C or less), more preferably 110 ° C or more, (glass transition temperature -20 ° ° C or less). The drying time is preferably from 0 to 5 to 2 hours, preferably from 1 to 18 hours, more preferably from 1.5 to 12 hours. When the drying temperature is too low, the removal rate of volatile components is lowered' and the drying time is too long. Further, the drying step can be carried out in two steps of -71 - 200949319. For example, the drying step may include a preliminary drying step for material storage and a pre-drying step before ~1 week before film formation. <<Melt Casting Method>> A preferred embodiment of the optical film of the cellulose ester of the present invention is preferably produced by melt casting as described above. The solvent used in the solution casting method (for example, methylene chloride or the like) is not used, and the molding method by melt-melting by heating and melting is more specifically classified into a melt extrusion molding method, a pressure molding method, and an expansion method. Injection molding method, blow molding method, extension molding method, and the like. Among them, a melt-pressing method is preferred because an excellent polarizing plate protective film such as mechanical strength and surface precision can be obtained. Hereinafter, a method of producing an optical film of the present invention will be described by taking a melt extrusion method as an example. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic flow chart showing the entire apparatus for carrying out the method for producing an optical film of the present invention, and Fig. 2 is an enlarged view showing a portion from a casting die to a cooling roll. 1 and 2, the optical film of the present invention is produced by mixing a film material such as cellulose ester, and then extruding the film from the casting die 4 to the first cooling roll 5 using the extruder 1. In addition to the first cooling roll 5, the third cooling roll 7 and the third cooling roll 8 are connected in series to form a cooling film, and the film 10 is obtained by cooling and solidifying. Next, the film 10 which has been peeled off by the peeling roller 9 is further sandwiched by the stretching device 12 and stretched in the width direction, and taken up by the winding device 16. Further, in order to correct the planarity, a contact roll 6 for pressing the molten film on the surface of the first cooling -72 - 200949319 roll 5 is provided. The contact roller 6 has elasticity on the surface and forms a nip between the first cooling roller 5. The details of the touch roller 6 will be described later. In the method for producing an optical film of the present invention, the conditions of melt extrusion are carried out under the same conditions as those used for thermoplastic resins such as other polyesters. The material is preferably pre-dried. The water is dried to a vacuum of 100 ppm or less, preferably 200 ppm or less, in a vacuum or a vacuum dryer or a dehumidifying hot air dryer. For example, the cellulose vinegar resin which is dried by hot air or under vacuum or reduced pressure is used, and the extruder 1 is melted. The extrusion temperature is about 200 to 300 ° C, and the foreign matter is removed by filtration using a vane type filter 2 or the like. When the feed hopper (not shown) is introduced into the extruder 1, it is preferable to prevent oxidative decomposition or the like under vacuum or under reduced pressure or in an inert gas atmosphere. When the additives such as a plasticizer are not previously mixed, these may be kneaded in the middle of the extruder. For the purpose of evenly adding it, it is preferable to use a mixing device such as a static mixing Q machine 3. In the present invention, the cellulose ester-based resin and other additives such as a stabilizer which must be added are preferably mixed before melting, and it is more preferable to mix the cellulose ester-based resin and the additive before heating. The mixing is carried out using a mixer or the like, and mixing may be carried out in the cellulose ester preparation process as described above. When a mixer is used, a general mixer such as a V-type mixer, a conical spiral type mixer, a horizontal cylinder type mixer, a Henschel mixer, or a ribbon mixer can be used. After mixing the materials constituting the film as described above, the mixture may be directly melted by using the extruder 1 to form a film, but once the material constituting the film is granulated -73-200949319, the granules are extruded into the machine 1 Melting to form a film. Further, when the material constituting the film contains a plurality of materials having different melting points, only the material having a lower melting point can be made into a so-called rice-like semi-melt at the melting temperature, and the semi-melt can be introduced into the extruder 1 After film formation. When the material constituting the film contains a material which is easily thermally decomposed, a method of directly forming a film without pellets or a method of forming a film after the rice-like semi-melt is preferably carried out for the purpose of reducing the number of times of melting. The extruder 1 is a variety of extruders which can be used commercially, but a melt-kneading extruder is preferred, and a single-axis extruder is also preferably a 2-axis extruder. When the film is directly formed from the material constituting the film, it is necessary to use a 2-axis extruder because the kneading degree is necessary. Therefore, even if a uniaxial extruder is used, the spiral shape can be changed to Maddock type. It can be used because it is moderately kneaded under the spiral of a mixed type such as Unimelt type or Dulmage. As the material constituting the film, when a pellet or a rice-like semi-melt is used, a uniaxial extruder or a 2-axis extruder can be used. The cooling step in the extruder 1 and after the extrusion may be replaced by an inert gas such as nitrogen or a reduced oxygen concentration by pressure reduction. The melting temperature of the material constituting the film in the extruder 1 is preferably different depending on the viscosity or discharge amount of the material constituting the film, the thickness of the sheet to be produced, and the like, and is generally Tg or more for the glass transition temperature Tg of the film. Tg + 100 ° C or less, preferably Tg + 10 ° C or more, Tg + 90 ° C or less. The melt viscosity at the time of extrusion is 1 to 1 〇〇〇〇Pa.s', preferably 10 to 1 〇〇〇Pa*s. Further, it is preferable that the material constituting the film in the extruder 1 has a shorter residence time, and is usually within 5 minutes, preferably within 3 minutes, more preferably within 2 minutes - 74 to 200949319 hours. The residence time is limited by the type of the extruder 1 and the extrusion conditions, and can be shortened by adjusting the supply amount of the material, the L/D, the number of spiral rotations, the depth of the spiral groove, and the like. The spiral shape or the number of rotations of the extruder 1 and the like are appropriately selected by the viscosity or the discharge amount of the material constituting the film. In the present invention, the cutting speed of the extruder 1 is from 1/sec to 1 0000/sec, preferably from 5/sec to 1 000/sec, more preferably from 10/sec to 1 00/sec. Μ As the extruder 1 used in the present invention, a general plastic forming machine can be used. The material constituting the film extruded by the extruder 1 is sent to the casting mold 4, and is extruded into a film shape by the slit of the casting mold 4. The casting mold 4 is used only for producing a sheet or a film, and is not particularly limited. Examples of the material of the casting mold 4 include hard chromium, chromium carbide, chromium nitride, titanium carbide, titanium carbonitride, titanium nitride, ultra-steel, ceramics (tungsten carbide, aluminum oxide, chromium oxide). Spraying or plating, as surface processing, can be exemplified by using honing stone with less than 1 000 grinding stones, and cutting with more than #1 000 diamond grinding stones (cutting direction and resin flow direction) In the vertical direction), electrolytic honing, electrolytic composite honing and other processing. The preferred material of the lip portion of the casting die 4 is the same as that of the casting die 4. Further, the surface precision of the lip portion is preferably 0.5 S or less, and preferably 0.2 S or less. The slit of the casting mold 4 is configured to adjust the interval. As shown in Figure 3. One of the pair of lips forming the slit 32 of the casting mold 4 is a flexible lip 33 which is less rigid and easily deformed, and the other is a fixed lip 34. Most of the heating bolts 35 are arranged at a certain interval in the width direction of the casting mold 4, i.e., -75-200949319. Each of the heating bolts 35 is provided with a block 36 having a buried electric heater 37 and a cooling medium passage, and each of the heating bolts 35 penetrates each block 36 in the longitudinal direction. The base of the heating bolt 35 is fixed to the outer surface of the mold body 31' to engage the outer surface of the flexible lip 33. On the other hand, the block 36 is subjected to '~-like air-conditioning cooling' to increase or decrease the force of the embedded electric heater 37 and adjust the temperature of the block 36. The heat-expanding heating bolt 35 is used to adjust the flexible lip 33 to be adjusted. membrane thickness. Providing a thickness gauge at a desired location after the molding is performed, whereby the detected fabric thickness information is fed back to the control device, and the thickness information is compared with the set thickness information by the control device, and the correction control amount from the same device can be used. The signal is used to control the power or operating rate of the heating element of the heating bolt. The heating bolts are preferably 20 to 40 cm in length and 7 to 14 mm in diameter. For example, a plurality of plural heating bolts are arranged at a preferred pitch of 20 to 40 mm. Instead of the heating bolts', it is also possible to arrange the spacers in the axial direction to manually move them back and forth to adjust the slit spacing as the main space adjusting member. The gap interval adjusted by the interval adjusting member is generally 200 to ΙΟΟΟμηη, preferably 300 to 800 μm, more preferably 400 to 600 μm. The first to third cooling rolls are made of seamless steel pipe having a wall thickness of 20 to 30 mm. And the surface is mirrored. A pipe into which the coolant flows is disposed inside, and the pipe is configured to absorb heat from the film on the roll by the inflowing coolant. On the other hand, the contact roller 6 coupled to the first cooling roller 5 has elasticity on its surface, and is deformed along the surface of the first cooling roller 5 by the pressure of the first cooling roller 5, and is interposed between the first roller 5 and the first roller 5. A nip is formed. The contact roller 6 is also -76-200949319 and is called a rolling rotor. As the contact roller 6, a contact roller disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. These can be used by purchasers. These are explained in more detail below. Fig. 4 is a cross-sectional view showing an example of a rolling rotor. (The first example of the contact roller 6 (hereinafter referred to as the contact roller A)). The contact roller A is a member in which the elastic roller 42 is disposed inside the flexible metal sleeve 41 as shown. The metal sleeve 41 is made of stainless steel having a thickness of 0.3 mm and has flexibility. When the metal sleeve 41 is too thin, the strength is insufficient, and if it is too thick, the elasticity is insufficient. Therefore, the thickness of the metal sleeve 4 1 is preferably 0.1 to 1.5 mm. The elastic roller 42 is provided with an elastic body 44 as a roller on the surface of the metal inner cylinder 43 which is rotatably supported by the bearing. When the contact roller A is pressurized on the first cooling roller 5, the elastic roller 42 is pressurized by the metal sleeve 41 on the first cooling roller 5, and the metal sleeve 41 and the elastic roller 42 are corresponding to the first cooling roller 5. Deformed under a similar shape, and formed into a nip between the first cooling roller and the first cooling roller. Cooling water 45 flows into the space formed between the elastic rollers 42 inside the metal sleeve 41. Fig. 5 is a cross-sectional view showing a vertical plane on the rotating shaft shown in the second example of the rolling rotor (hereinafter referred to as the contact roller B). Fig. 6 is a cross-sectional view showing a plane of a rotation axis of a second example (contact roller B) including a rolling rotor. In Fig. 5 and Fig. 6, the contact roller B is flexible, and the outer cylinder 51 made of a seamless stainless steel pipe (thickness: 4 mm) and the high-rigidity metal inner cylinder 5 which is disposed in the same axial direction as the inner side of the outer cylinder 51 are provided. 2 strategic composition. The cooling liquid 54 flows into the space 53 between the outer cylinder 5 1 - 77 - 200949319 and the inner cylinder 52 . Specifically, the contact set B is such that the outer tube support shafts (flanges) 56a, 56b are attached to the both end rotary shafts 55a, 55b, and the outer peripheral support flanges 56a, 56b are disposed between the outer peripheral portions. Upper thin-walled metal outer cylinder 51. Further, the fluid supply pipe 59 is formed in the same axial center in the fluid discharge hole 58 formed in the fluid return passage 57 formed by the axial center portion of the one rotation shaft 55a, and the fluid supply pipe 59 is connected and fixed to the thin wall. The fluid cylinder 60 is disposed on the axial center portion of the metal outer cylinder 51. Inner cylinder support flanges 61a, 61b may be respectively attached to both end portions of the fluid barrel 60, and the outer cylinder support flanges 56b are attached from the outer portions of the inner cylinder support flanges 61a, 61b to the other end side outer cylinder support flanges 56b. A metal inner cylinder 52 having a wall thickness of about 15 to 20 mm. Between the metal inner cylinder 52 and the thin-walled metal outer cylinder 51, for example, a cooling liquid flow space 5 3 is formed, and a metal inner cylinder 52 is formed, and a communication flow space 53 is formed in the vicinity of both end portions. The outflow port 52a and the inflow port 52b of the intermediate passages 62a and 62b on the outer side of the inner cylinder support flanges 61a and 61b. Further, the outer cylinder 51 has a flexibility, flexibility, and restorability similar to the elasticity of the rubber, and is thinned in a range in which the thin-walled cylinder theory of elasticity is applicable. The flexibility evaluated by the thin-walled cylinder theory is expressed by the ratio of the wall thickness t/roller radius r, and the smaller the ratio of t/r, the higher the flexibility. In the contact roll B, when t/rg is 0.03, flexibility is an optimum condition. Generally, the contact roller used is a roll diameter R = 200 to 500 mm (roll radius r = R / 2), and the roll effective width L = 500 to 1600 mm at r / L &lt;l horizontally long shape. As shown in Fig. 6, for example, when the roll diameter R = 300 mm and the roll effective width L = 1200 mm, the optimum range of the wall thickness t is 15 〇χ〇.03 = 4.5 mm or less, but for the melt -78-200949319, the sheet width is In the case of 1 300 mm, when the average line pressure is 98 N/cm, it is compared with the rubber roller of the same shape. Since the wall thickness of the outer cylinder 51 is 3 mm, the rebound number is also equal, and the pressure of the outer cylinder 51 and the cooling roller is equal. The nip width k of the roll direction of the zone is also about 9 mm, and the nip width of the rubber roll is shown to be close to about 12 mm, and it can be pinched under the same conditions. Further, the amount of deflection in the nip width k is about 0.05 to 0.1 mm. In addition, as t/rS0.03, when the roll diameter is generally R=200 to 5 mm, particularly in the range of 2 mm $ tS 5 mm, sufficient flexibility can be obtained, and the thickness of the machine is also reduced. It is easy to implement and becomes extremely practical. When the wall thickness is 2 mm or less, the elastic deformation during processing cannot be processed with high precision. The conversion of 2 mm StS 5 mm is 0.008 St/rS 0.05 for the normal roll diameter, but it is preferably proportional to the roll diameter and the wall thickness is also large under the conditions of t/r and 0·03. For example, the roll diameter: R = 200, t = 2 to 3 mm, light diameter: R = 500, t = 4 to 5 mm, the contact rolls A, B are selected, and the energy is not shown ( Energizing means providing energy to the first chill roll. The supply capacity of the energy supply means is F, and the width W of the film of the nip along the rotation axis direction of the first cooling roll 5 is set to 9.8=F/W (line pressure) is set to 9.8 to 14 7N/cm. In the embodiment of the present invention, a nip is formed between the contact rolls A and B and the first cooling roll 5, and the nip may be corrected to planarity between the passages of the film. Therefore, compared with when the contact roller is composed of a rigid body and the nip is not formed between the first cooling roller, the film is pressed for a long time by the small wire pressing -79-200949319, so that the film can be more reliably Correct flatness. That is, if the line pressure is less than 9.8 N/cm, the plastic film line cannot be sufficiently eliminated. On the other hand, when the line pressure is larger than 147 N/cm, the film does not easily pass through the nip, and the thickness of the film is liable to cause unevenness. Further, when the surfaces of the contact rolls A and B are made of metal, the surface of the rolls A and B can be smoothly smoothed compared with the case where the surface of the contact roll is made of rubber, so that a film having high smoothness can be obtained. Further, as the material of the elastic body 44 of the elastic roller 42, an ethylene-propylene propylene rubber, a neoprene rubber, a ruthenium rubber or the like can be used. It is important to eliminate the plastic film line by the contact roller 6, and it is important that the film viscosity when the contact roller 6 is pressed against the film must be an appropriate range. Further, it is known that cellulose esters have a large change in viscosity due to temperature. Therefore, it is important that the viscosity of the contact roll 6 when the optical film is sandwiched is set to an appropriate range, and the film temperature at which the contact roll 6 is pressed against the cellulose film must be set to an appropriate range. When the glass transition temperature of the optical film is taken as Tg, the film is pressed against the film temperature T before the contact roller 6 to satisfy Tg. &lt;T &lt;Tg + l 10 ° C conditions are preferred. If the film temperature T is lower than Tg, the film viscosity will be too high to correct the film line. Conversely, if the temperature T of the optical film is higher than Tg+1 ltrc, the surface of the film and the roller cannot be uniformly adhered, and the film line cannot be corrected. It is preferably Tg + Ι 0. (: &lt;T2 &lt;Tg + 9 (TC, more preferably Tg + 2 (TC) &lt;T2 &lt;Tg + 7 (TC.) The film temperature at which the contact roller 6 is to sandwich the optical film is set to an appropriate range, and the melt extruded from the casting die 4 is adjusted by the position P1 in contact with the first cooling roller 5. The length L of the first cooling roll 5 in the nip of the first cooling roll 5 and the contact roll 6 may be the length L. -80 - 200949319 In the present invention, the first cooling roll 5 and the second cooling roll The preferred material of the material is carbon steel, stainless steel, resin, etc. Further, the surface precision is preferably high, and the surface roughness is 0.3 S or less, preferably 0.01 S or less. In the present invention, by the flow The partial pressure of the lip of the die 4 to the first cooling roll 5 is reduced to 7 kPa or less, and the correction effect of the plastic film line can be increased. Preferably, the pressure is 50 to 70 kPa. The method of maintaining the partial pressure of the lip of the die 4 to the first cooling roll 5 at 70 kPa Ο or less is not particularly limited, and there is a method in which the self-casting die 4 is applied to the periphery of the roll and covered with a pressure-resistant member to reduce the pressure. At this time, the suction device is configured such that the device does not become a place where the sublimate is attached, and the heater is heated to be heated. In the present invention, if the suction pressure is too small, the sublimate material cannot be effectively attracted, so that it is necessary to have an appropriate suction pressure. In the present invention, the film-form cellulose ester in a molten state of the self-casting mold 4 is used. The resin is conveyed in a dense manner in the order of the first cooling roll 5, the second cooling roll 7, and the third cooling roll 8, and is cooled and solidified to obtain a cellulose ester-based resin film 10 which is not stretched. In the embodiment of the present invention shown in Fig. 1, the cooled and solidified unstretched film 1 which is peeled off from the third cooling roll 8 by the peeling roller 9 is introduced into the stretching machine 12 via the dancer roll (film tension adjusting roll) 11, Here, the film 1〇 is extended in the lateral direction (wide direction), and the molecules in the film are aligned by the stretching. A method of extending the film in the width direction can be carried out by a known tenter or the like. In the width direction, lamination with the polarizing film can be carried out in the form of a roll. When extending in the width direction, the retardation axis of the optical film formed of the cellulose ester-81 - 200949319 resin becomes a wide direction. Polarized film The transmission axis is generally also in a wide direction. The transmission axis of the polarizing film is parallel to the retardation axis of the optical film, and the laminated polarizing plate is incorporated into the liquid crystal display device, which can improve the display contrast of the liquid crystal display device, and can also be well obtained. The glass transition temperature Tg of the material constituting the film can be controlled by the difference in the type of the material constituting the optical film and the ratio of the materials constituting the film. When the retardation film is produced as an optical film, the Tg is 120 ° C or more. Preferably, the temperature is higher than 135 ° C. In the liquid crystal display device, the temperature of the device itself rises during the image development state, for example, the temperature rise from the light source may change the temperature environment of the film. When the Tg of the film is lower, the stagnation caused by the state of the molecular orientation fixed to the inside of the film, and the size and shape of the film are greatly changed. When the Tg of the film is too high, the temperature at which the material constituting the film is thinned is too high, and the energy consumption for heating is increased, and the material itself is decomposed when the film is formed, and coloring is caused thereby, so the Tg is 250. Below °c is preferred. Further, in the step of stretching, known heat setting conditions, cooling, and relaxation treatment can be carried out, and the characteristics required for the optical film according to the purpose can be appropriately adjusted. The function of the retardation film when the physical properties of the retardation film and the viewing angle of the liquid crystal display device are to be increased can be appropriately selected by the above-described stretching step and heat setting treatment. When the step of stretching and the heat setting treatment are included, the heating and pressurizing step may be performed before the extending step and the heat setting treatment. -82- 200949319 When the optical film of the present invention is used as a retardation film and further as a phase difference film functioning as a composite polarizing plate protective film, it is necessary to perform refractive index control, and the refractive index control is preferably extended. method. The extension method will be described below. In the step of extending the retardation film, it is possible to control the necessary retention enthalpy R〇 and Rt by extending 1.0 to 2.0 times in the direction of the cellulose ester and increasing the elongation in the direction of the intersection of the film by 1.01 to 2.5 times. Among them, Ro shows the lag in the surface, and Rt indicates the stagnation in the thickness direction. The stagnation 値Ro, Rt can be obtained by the following formula. Formula (i) Ro = ( nx - ny ) xd Formula (ii ) Rt = ( ( nx + ny ) / 2-nz ) xd (wherein nx represents the refractive index in the direction of the slow axis of the film, ny represents The refractive index in the direction of the phase of the film in the plane of the film, nz represents the refractive index of the thickness of the film (the refractive index is measured at 23 ° C, 55% RH, measured at a wavelength of 590 nm), and d represents the film thickness (nm). ). The refractive index of the optical film was measured using an Abbe refractometer (4T), the film thickness was obtained by using a commercially available micrometer, and the hysteresis was measured using an automatic birefringence meter KOBRA-21ADH (manufactured by Oji Scientific Instruments Co., Ltd.). The extension can be carried out, for example, for the long direction of the film and in the direction perpendicular to the inside of the film, i.e., for the width direction, successively or simultaneously. At this time, if the stretching ratio in at least one direction is too small, a sufficient phase difference cannot be obtained, and when it is too large, stretching becomes difficult and film breakage occurs. -83- 200949319 For example, if the shrinkage in the direction of the melt casting (longitudinal direction) is too large, the nz will be too large. At this time, it is suppressed that the width of the film shrinks or is extended in the width direction. When extending in the width direction, uneven refractive index distribution occurs in the width direction. This distribution sometimes occurs when the tenter method is used, and it is presumed that when the film is stretched in the width direction, a contraction force is generated in the central portion of the film, and the end portion is fixed, which causes a so-called bowing. phenomenon. At this time, when the extension is also performed in the casting direction, the bowing phenomenon can be suppressed, and the phase difference unevenness in the width direction can be reduced. By extending in the two-axis directions parallel to each other, the film thickness variation of the obtained optical film can be reduced. When the film thickness of the retardation film is excessively changed, the phase difference is uneven, and when it is used in a liquid crystal display, it may cause unevenness in coloring or the like. The film thickness variation of the optical film is ±3 %, more preferably ±1%. In the above object, the method of extending in the two-axis direction orthogonal to each other is effective, and the stretching ratio in the two-axis direction orthogonal to each other is 1.0 to 2.0 times in the final casting direction, and 1.01 to 2.5 times in the width direction. The range is preferably, and it is more preferable to obtain a residence enthalpy which is carried out in the range of 1.05 to 2.0 times in the width direction in the casting direction of 1 to 1.51 to 1.5 times. When the absorption axis of the polarizer exists in the longitudinal direction, the transmission axis of the polarizer can be made uniform in the width. It is preferable to laminate the long-length polarizing plates in a roll-to-roll manner, and the retardation film is extended in the width direction to obtain a slow phase axis. When a cellulose ester obtained by positive birefringence is used for the stress, when the above-mentioned 84-200949319 is formed to extend in the width direction, the retardation axis of the retardation film can be stressed in the width direction. In this case, in order to improve the display quality, the retardation axis of the retardation film is preferably in the width direction, and the retention of the target must be satisfied, and the formula: (the stretching ratio in the width direction) &gt; (the stretching ratio in the casting direction) condition. After the extension, the end portion of the film is cut by the slitting machine 13 as a slit of the width of the product, and then the flange processing is performed by the edge ring 14 and the back roller 15, and the edge processing is performed on both ends of the film. (knurled, embossing), being taken up by the winder 16 to prevent the occurrence of sticking or scratching in the optical film (element) f. The method of burring can be processed by heating or pressurizing a metal ring having a convex and concave pattern on the side. Moreover, the holding portion of the press plate at both ends of the film is generally deformed and cannot be used as a film product, so that it can be reused as a raw material after being cut. Continuing the film winding step is such that the film is wound on the take-up reel by keeping the shortest distance between the outer peripheral surface of the cylindrical roll film and the outer peripheral surface of the moving conveyance light. Further, before the take-up reel, means such as a static eliminating fan for removing or reducing the surface potential of the film may be provided. The coiler for producing the optical film of the present invention can be wound by a general user's winding method such as a constant tension method, a constant torque method, a tilting tension method, or a program tension control method with a constant internal stress. Further, the initial winding tension at the time of winding up the polarizing plate protective film is preferably 90.2 to 30.8 N/m. -85- 200949319 In the method of the present invention, in the winding step of the film, it is preferred to wind up the film under the environmental conditions of a temperature of 20 to 30 ° C and a humidity of 20 to 60% RH. In this way, the temperature and humidity of the film winding step can be adjusted to improve the humidity change resistance of the 値(Rt) in the thickness direction. When the temperature in the winding step is less than 20 °C, crepe is generated, and the deterioration of the quality of the film roll makes it impossible to use it. When the temperature in the winding step of the film exceeds 30 °C, wrinkles are still generated, and the film roll quality is deteriorated, which is not practical. Further, if the humidity in the winding step of the film is less than 20% RH, static electricity is easily generated, and the deterioration of the film roll quality is not practical and is not preferable. When the humidity in the winding step of the film exceeds 60% RH, the roll quality, the bonding failure, the conveyability, and the like may be deteriorated. When the polarizing plate protective film is wound into a roll shape, the core of the roll may be only the core on the cylinder, and may be any material, but is preferably a hollow plastic core, which is resistant to plastic material. The heat-resistant plastic material having a heat treatment temperature may be a resin such as a phenol resin, a xylene resin, a melamine resin, a polyester resin or an epoxy resin. Further, it is preferred to use a tempered thermosetting resin such as glass fiber. For example, a hollow plastic core: an outer diameter of 6 inches using FRP (hereinafter, 2.5 inches for inches). , the inner diameter of the 5 inch roll core. The number of rolls of these roll cores is preferably 100 or more, more preferably 500 or more, and the roll thickness is preferably 5 cm or more, and the width of the film substrate is preferably 80 cm or more, and lm or more is particularly preferable. The thickness of the optical film of the present invention varies depending on the purpose of use, but it is preferably from 10 to 500 μm for the finished optical film as -86-200949319. In particular, the lower limit is 2 〇 ηι or more, and it is preferably 35 μm or more. Further, the upper limit of 150 μm or less is preferably '120 μm or less. Especially 25~90μιη is preferred. When the retardation film has a polarizing plate protective film, if the film is too thick, the polarizing plate after the polarizing plate is processed is too thick, and the liquid crystal display used in a notebook computer or a portable electronic device cannot be applied to a particularly thin and lightweight film. The purpose. On the other hand, when the film is too thin, it is difficult to perform as a retardation film of the retardation film, and the moisture permeability of the film is high, so that the protective ability in the polarizer humidity is lowered, which is not preferable. When the retardation axis or the phase advancement axis of the retardation film is present in the film plane, and the angle formed by the film formation direction is Θ1, Θ1 is -1 to +1 °, preferably -0.5 to + 0.5 °. The Θ1 is defined as the alignment angle, and the measurement of Θ1 can be performed using an automatic birefringence meter KOBRA-2 1 ADH (manufactured by Oji Scientific Instruments Co., Ltd.). When Θ1 satisfies the above relationship, a better brightness in the display image can be obtained, and light leakage can be suppressed or prevented, and a faithful color reproduction can be obtained for the color liquid crystal display device. When the retardation film is a VA type having a wide viewing angle, the retardation film is disposed such that the phase axis of the retardation film is placed in the region as the Θ1, thereby improving the display image quality and serving as a polarizing plate and a liquid crystal display device. In the case of the MVA type, for example, the configuration shown in Fig. 7 can be used. In Fig. 7, 21a and 21b are protective films, 22a and 22b are retardation films, 25a and 25b are polarizers, 23a and 23b are the retardation axes of the film, and 24a and 24b are the transmission axis directions of the polarizers, 26a. 26b is a polarizing-87-200949319 board, 27 is a liquid crystal cell, and 29 is a liquid crystal display device. The retention Ro distribution in the in-plane direction of the optical film is preferably 5% or less, preferably 2% or less, and particularly preferably 1.5% or less. Further, the retention Rt distribution in the thickness direction of the film is preferably 10% or less, more preferably 2% or less, and particularly preferably 1.5% or less. In the retardation film, it is preferable that the variation of the distribution of the retained ruthenium is small. When the liquid crystal display device includes the polarizing plate of the retardation film, it is preferable to prevent color unevenness when the variation of the retention distribution is small. The retardation film is adjusted to have a retention enthalpy which is suitable for improving the quality of the liquid crystal cell of the VA form or the TN form, and is particularly suitable for the MVA form when it is divided into the above-described multiple regions as the VA form, and the in-plane retention R is formed. It is 95 nm or less larger than 30 nm, and the thickness direction retention Rt is adjusted to be larger than 70 nm and 400 nm or less. The in-plane retention Ro is such that two polarizing plates are disposed on crossed Nicols, and liquid crystal cells are disposed between the polarizing plates. For example, when the configuration is as shown in FIG. 7 , when viewed from the normal direction of the display surface as a reference, when viewed from the slope of the normal line of the display surface in the crossed Nicols state, the polarized plate is crossed. The Cole state produces a deviation, which compensates for the light leakage caused by this. When the retention in the thickness direction Rt is in the above-described TN form or VA form, particularly in the case where the liquid crystal cell is in the black display state, the birefringence of the liquid crystal cell seen by the slope can be similarly compensated. As shown in Fig. 7, in the liquid crystal display device, when two polarizing plates are arranged on the upper and lower sides of the liquid crystal cell, 22a and 22b in the drawing are in such a manner that the distribution of the thickness direction retention Rt can be selected to satisfy the above range, and the thickness direction is retained by Rt. -88-200949319 The total 値 is greater than 140 nm, and R0 is retained in the plane of 1 and 22b at 500 nm, and the retention of Rt in the thickness direction improves the productivity of the industrial polarizing plate. When the thickness is more than 35 nm and is 65 nm or less, and the thickness is [90 nm and 180 nm or less, it is suitable for the liquid crystal cell of the formula. In the liquid crystal display device, the photo-protective film on one of the polarizing plates can be disposed in the position of 22b of the TAC thin drawing 7 of the thickness of 35 to 85 μm in the surface of the film of the protective film of Ro=0 to 4 nm and Ό=20 to 50 nm. For example, one of the films disposed in the retardation film of 22a of FIG. 7 is larger than 30 nm and 95 rpm or less, and is larger than 140 nm and is 400 nm or less. It is also good from the production side of the film. According to the present invention, the long n film produced by the melt casting method is composed of a cellulose ester as a main component, so that alkalization can be used to carry out the alkali treatment step. In the case of the polyvinyl alcohol, the polyvinyl alcohol-based alcohol solution can be used as the polarizing plate protective film in combination with the polarizing plate protective film in the past. The invention is excellent in the long-length roller polarizing plate which is suitable for the conventional polarizing plate processing method. The manufacturing effect obtained by the present invention is remarkable particularly in the case of a roll paper, and the manufacturing effect of the polarizing plate production can be obtained at a time of 1 500 m and 2500 m. c is better. When both of 22a are the same, I is an MVA shape in which the in-plane retention R〇3 retention Rt is greater than 7. The Rt film is retained in the direction of the thickness direction of the sale, for example, a polarizing film used for a polarizing plate, and a usable surface The thickness of the Rt tube is not good quality* and the polarizing plate protects the resin which uses the cellulose ester-fixed photon as a sample. Therefore, in particular, it is possible to obtain a longer length of more than 100 m and a length of 5,000 m - 89 - 200949319. For example, in the manufacture of a polarizing plate protective film, the roll length is 10 to 5000 m, preferably 50, in consideration of productivity and transportability. ~4500m, the film width at this time can be selected from the width of the polarizer or the width of the manufacturing process.制造·5~4.0m, preferably 0.6~3.0m wide, the film can be supplied to the polarizing plate after being wound into a roll shape, and the film of the multiple width or more is manufactured and wound up on the roll, and then cut. After that, a roller having a wide purpose is obtained, and such a roller can be used for processing of a polarizing plate. The polarizing plate protective film may be coated with a functional layer such as an antistatic layer, a cured film layer, a slippery layer, an adhesive layer, an antiglare layer, and a barrier layer before and/or after the stretching. At this time, various surface treatments such as corona discharge treatment, plasma treatment, and chemical treatment can be carried out as necessary. In the film forming step, the holding portion of the press plate at both ends of the cut film may be reused as a film material of the same variety or a film of a different type after being pulverized as described above or granulated as necessary. raw material. Further, the composition containing the cellulose ester having a different concentration of the additives such as the plasticizer, the ultraviolet absorber, and the matting agent may be subjected to a total of an optical film having a laminated structure. For example, an optical film such as a skin layer/core layer/skin layer can be produced. For example, the matting agent can be placed in a large amount on the skin layer or only in the skin layer. The amount of the plasticizer and the ultraviolet absorber to be placed may be larger in the core layer than in the skin layer, or may be placed only in the core layer. Further, the core layer and the skin layer may be changed by a type of a plasticizer or an ultraviolet absorber. For example, a low-volatility plasticizer and/or a UV absorber may be contained in the skin layer, and a plasticizer excellent in plasticity or ultraviolet absorption may be added to the core layer. Excellent UV absorber. Glass transition between the skin layer and the core layer -90- 200949319 The temperature is different, and the glass transition temperature of the core layer is lower than the glass transition temperature of the skin layer. At this time, the glass transition temperatures of both the skin and the core were measured, and the average enthalpy calculated by the volume fraction was defined as the above-mentioned glass transition temperature Tg. Further, the viscosity of the melt containing the melt-flowing cellulose ester may be different between the skin layer and the core layer, the viscosity of the skin layer&gt; the viscosity of the core layer, or the viscosity of the core layer, and the viscosity of the skin layer. can. The dimensional stability of the optical film of the present invention is such that when the film size after 23 hours of placing at 23 t: 55 % RH for 24 hours, the dimensional change of 80% RH at 80 ° C is less than ± 2.0%, preferably less than When the optical film of the present invention is used as a protective film for a polarizing plate of a retardation film, when the retardation film itself has a variation within the above range, the retention property of the polarizing plate is 10.0%, more preferably less than 0.5%. It is preferable that the absolute 値 and the orientation angle are not inconsistent with the original setting, which does not cause deterioration in display quality improvement or deterioration in display quality. <<Polarizing Plate>> When the optical film of the present invention is used as a polarizing plate protective film, the method for producing the polarizing plate is not particularly limited, and it can be produced by a general method. The inner side of the optical film of the present invention is alkalized, and the treated optical film is immersed in at least one side of the polarizing film formed by stretching in the iodine solution, and the ruthenium-inspected polyethyl alcohol aqueous solution is used for affixing. It is better. On the other hand, the optical film of the present invention can be used, or a polarizing plate can be used to protect the film. For the optical film of the present invention, the polarizing plate protective film used on the other side can be used for selling optical films. For example, as an optical film for sale, KC8UX2M, KC4UX, KC5UX, KC4UY, KC8UY, KC12UR, KC8UCR-3, KC8UCR-4, KC4FR-1, KC8UY-HA, KC8UX-RHA (above is Konicaminolta) Wait. Further, it is preferable to use a polarizing plate protective film which is an optical compensation film of an optical heterogeneous layer formed by orienting a liquid crystal compound such as a discotic liquid crystal, a rod-like liquid crystal or a cholesteric liquid crystal. For example, an optical anisotropic layer can be formed by the method described in JP-A-2003-98348. By using the optical film of the present invention, a polarizing plate having excellent planarity and a stable viewing angle expansion effect can be obtained. Or a film of a cyclic olefin resin other than an optical film having a cellulose ester, an acrylic resin, a polyester, a polycarbonate or the like can be used as the polarizing plate protective film on the other side. In place of the above-mentioned alkali treatment, it is possible to carry out the processing of a polarizing plate which is easily processed in accordance with JP-A-6-94915, and the publication of JP-A-6-181232. The polarizer which is a component mainly composed of a polarizing plate is a light element which passes only a polarizing surface in a certain direction, and a representative polarizer which is now known is a polyvinyl alcohol-based polarizing film, which is a polyvinyl alcohol. The film is obtained by dyeing iodine with those obtained by dyeing with a dichroic dye. The polarizer is preferably obtained by subjecting an aqueous solution of polyvinyl alcohol to film formation, stretching it after one-axis stretching, or dyeing it and then performing one-axis stretching, preferably after treatment with a boron compound. The film thickness of the polarizer is 5 to 40 μm, preferably 5 to 30 μm, particularly preferably 5 to 20 μm. On the polarizing surface, a polarizing plate is formed by laminating the surface of the optical film of the present invention. Preferably, it is bonded by a water-based adhesive which is a main component of a fully alkalized polyvinyl alcohol or the like -92-200949319. The polarizer extends in the direction of one axis (usually the long direction), so when the polarizer is placed in a high-temperature and high-humidity environment, the direction of extension (usually the long direction) will be tight, and will be perpendicular to the extension (usually the width direction). )extend. The thinner the film thickness of the polarizing plate protective film, the larger the expansion ratio of the polarizing plate, and the larger the amount of shrinkage in the extending direction of the polarizer. In general, the direction in which the polarizer is extended is bonded to the casting direction (MD direction) of the film for protecting the polarizing plate. Therefore, when the film for protecting the polarizing plate is thinned, the step of suppressing the expansion ratio in the casting direction is particularly important. . The optical film of the present invention has excellent dimensional stability and can be suitably used as such a polarizing plate protective film. That is, it does not increase wavy spots by the durability test under the conditions of 60 ° C and 90% RH, and even if it is a polarizing plate having an optical compensation film on the inner side, it can provide the viewing angle characteristics after the durability test. Good visibility without change. The polarizing plate is composed of a polarizing film and a protective film for protecting both sides thereof, and Q is formed on one surface of the polarizing plate by bonding the protective film to the opposite surface. The protective film and the release film are used for the purpose of protecting the polarizing plate during inspection of the product when the polarizing plate is shipped. At this time, the protective film is bonded for the purpose of protecting the surface of the polarizing plate, and is used to bond the polarizing plate to the reverse surface of the surface of the liquid crystal panel. Further, the release film is used for the purpose of covering the adhesive layer attached to the liquid crystal panel, and is used for bonding the polarizing plate to the surface of the liquid crystal cell. <<Liquid Crystal Display Device>> -93- 200949319 A polarizing plate using a polarizing plate protective film (including a phase difference film) containing the optical film of the present invention, which can exhibit higher display quality, in particular, is wider than a general polarizing plate. The viewing angle type liquid crystal display device is preferably a wide viewing angle type liquid crystal display device which is in a form of birefringence. The polarizing plate of the present invention can be a MVA (Multi-domein Vertical Alignment) type, a PVA (Patterned Vertical Alignment) type, a CPA (Continuous Pinwheel Alignment) type, an OCB (Optical Compensated Bend) type, or an IPS (In Place Switching) type. It is not limited to a specific liquid crystal type or a polarizing plate configuration. The liquid crystal display device can be applied as a device for colorization and animation display, and the present invention can improve the display quality, improve the contrast improvement or the resistance of the polarizing plate, and can exhibit the real moving image display without being fatigued. In a liquid crystal display device using a polarizing plate containing a retardation film, the polarizing plate used as the retardation film of the present invention is disposed one on the liquid crystal cell or two on both sides of the liquid crystal cell. At this time, the phase difference film side used for the polarizing plate can improve the display quality when facing the liquid crystal cell of the liquid crystal display device. In Fig. 7, the films of 22a and 22b are liquid crystal cells facing the liquid crystal display device. In such a configuration, the optical film of the present invention can optically compensate the liquid crystal cell. When the polarizing plate of the present invention is used in a liquid crystal display device, at least one polarizing plate in the polarizing plate of the liquid crystal display device may be used as the polarizing plate of the present invention. By using the polarizing plate of the present invention, high display quality can be provided, and a liquid crystal display device excellent in viewing angle characteristics can be provided. In the polarizing plate of the present invention, a polarizing plate protective film of a cellulose derivative is used on the opposite side of the optical thin film of the present invention from the optical thin film of the present invention, and a general-purpose TAC film or the like can be used. The polarizing plate protective film positioned far from the liquid crystal cell can be configured with other functional layers in order to improve the quality of the display device. For example, a film containing a functional layer such as anti-reflection, anti-glare, scratch-resistant, anti-stain adhesion, and brightness enhancement as a constituent may be bonded to the surface of the polarizing plate of the present invention. [Embodiment] [Embodiment] Hereinafter, the present invention will be specifically described by way of examples, but the embodiment of the invention is not limited thereto. [Example 1] [Production of optical film having cellulose ester (hereinafter simply referred to as cellulose ester film) 1] A cellulose ester film 1 was produced by a melt casting method using cellulose ester and various additives as follows. Cellulose ester C-1 (refer to the following) 100 parts by mass of PETB (described later) 8.0 parts by mass of the compound represented by the general formula (1) used in the present invention, and exemplified compound 1-3 (refer to the above) 〇· 1 〇 The mass fraction of TINUVIN 92 8 (manufactured by Ciba Japan Co., Ltd.) 1.5 parts by mass The cellulose ester was dried at 70 ° C for 3 hours under reduced pressure, and after cooling to room temperature, the above additives were mixed. -95- 200949319 The above mixture was melt-mixed at 230 ° C using a 2-axis extruder to pelletize. Further, the glass transition temperature Tg of the pellet is 136 ° C. The pellet is melted at 250 ° C in a nitrogen atmosphere, and then the self-casting mold 4 is extruded on the first cooling roller 5, and the first cooling roller 5 is extruded. The film is rolled and formed between the contact roller 6. In addition, the hopper opening portion in the middle portion of the extruder 1 was added as a lubricant. 5 parts by mass of cerium oxide particles AEROSIL 200V (manufactured by AEROSIL Co., Ltd.). The interval width of the casting mold 4 is 0.5 mm within 30 mm from the end portion in the film width direction, and the heating bolt is adjusted to 1 mm in other places. As the contact roller, a contact roller A was used, and the inside thereof was poured into water of 80 ° C of cooling water. The position P1 from the position P1 where the resin extruded from the casting die 4 is in contact with the first cooling roll 5 to the upstream end position P2 in the rotational direction of the first cooling roll 5 of the first cooling roll 5 and the contact roll 6 (nip) The length L of the circumferential surface of the first cooling drum 5 is set to 20 mm. Thereafter, the contact roller 6 is peeled off from the first cooling roller 5, and the temperature T of the melting portion before the nip of the first cooling roller 5 and the contact roller 6 is pressed is measured. In the present embodiment, the temperature T of the melting portion before the nip of the first cooling roller 5 and the contact roller 6 is set by the upstream side of the nip upstream end P2 by 1 mm. The thermometer (HA-200E manufactured by Anritsu Co., Ltd.) was measured. The measurement result of this example was that the temperature T was 141 °C. The line pressure of the touch roll 6 with respect to the first cooling roll 5 was 14.7 N/cm. And introduced into the tenter, and extended 1.3 times in the width direction at 160 ° C, and then cooled to 30 ° C while 3% relaxation in the width direction, and then the self-pressing plate was opened, and the plate holding portion was cut off. The end is applied with a width of l〇mm and a height of 5 μm to the mark processing, and the volume of -96-200949319 is taken to be 220 N/m, and the core is taken up by a taper of 40%. Further, the film was adjusted to have an extrusion amount and a drawing speed to a thickness of 80 μm. The finished film was formed to have a width of 1430 mm and wound up. The core has an inner diameter of 152 mm, an outer diameter of 165 to 180 mm, and a length of 1 5 50 mm. As the core material, a pre-stained resin in which an epoxy resin is immersed in glass fibers or carbon fibers is used. An epoxy-based conductive resin was applied to the surface of the core, and the surface was honed to have a surface roughness Ra of 0.3 μm. Further, the roll length was 2,500 m. The film raw material sample of the present invention was designated as the cellulose ester film 1. [Preparation of the cellulose ester film 2 to 15] In the production of the cellulose ester film 1, the type of the cellulose ester and the compound of the general formula (1) of the present invention were changed to the same as those shown in Table 1, and were produced in the same manner. The cellulose ester film 2 to 15 was obtained. Further, the addition amount of the cellulose ester of the cellulose ester C-1 to be used is the same as that of the cellulose ester C-1, and the addition amount of the compound represented by the general formula (1) used in the present invention is Φ. 1 part of the mass. C-1: cellulose acetate propionate (acetylation degree 1.4, propylene substitution degree 1.3, molecular weight Mn=86, 〇〇〇, Mw/Mn=2.5) C-2: cellulose acetate Ester propionate (acetate substitution degree 1.3, propyl ketone substitution degree 1.2, molecular weight Mn = 66,000, Mw / Mn = 3. 〇) C-3: cellulose acetate propionate (ethylene thiol substitution degree) 1.6, propylene thiol substitution degree 1.2, molecular weight Mn = 79,000, Mw / Mn = 2.9) C-4: cellulose acetate propionate (acetamyl substitution degree 2.0, propyl ketone substitution degree 0.7, molecular weight Mn = 91, 〇〇〇, Mw / Mn = 2.4) -97- 200949319 [Chem. 31]

T1NUVINd28

Ph-1

O々c,ch=ch2 I

[Production of Cellulose Ester Films 1-1 to 1-20] In the production of the cellulose ester film 1, the same amount as the production of the cellulose ester film 1 was carried out except that the amount of extrusion and the drawing speed were adjusted to a film thickness of 40 μm. The cellulose ester film 1-1 to 2 () was produced, and the type of the cellulose ester used was the same as that described in Table 1-1, and the amount of addition was the same as that of the cellulose ester cl. The type and amount of the compound represented by the general formula (1) used in the present invention are as described in the table and in parts by mass. Example 2 [Production of an optical film having a cellulose ester (hereinafter simply referred to as a cellulose ester film) 2 1] -98 - 200949319 A cellulose ester was produced by melt casting using a cellulose ester and various additives as described below. Film 21. Cellulose ester Cl (see above) 100 parts by mass of PETB (refer to the above) 8.0 parts by mass of TINUVIN 928 (manufactured by Ciba Japan Co., Ltd.) 1.5 parts by mass of the compound of the general formula (1) used as the present invention, exemplified by the compound 1-31 ( Refer to the aforementioned) 0.25 parts by mass

Ql: IRGANOX1010 (manufactured by Ciba Japan Co., Ltd.) 0.25 parts by mass Q-2: SumilizerGS (manufactured by Sumitomo Chemical Co., Ltd.) 0.25 parts by mass Q-3: GSY-P101 (manufactured by Daisei Chemical Industry Co., Ltd.) 0.20 parts by mass of cellulose ester After drying at 70 ° C for 3 hours under reduced pressure and cooling to room temperature, the above additives were mixed. The above mixture was melt-mixed into granules at 23 ° C using a 2-axis extruder. Further, the glass had a glass transition temperature Tg of 136 °C. This pellet was melted at 250 °C under a nitrogen atmosphere, and the cast film 4 was extruded from the first cooling roll 5, and the film was formed by rolling a film between the first cooling roll 5 and the contact roll 6. In addition, 0.5 parts by mass of cerium oxide particles Aerosil 200V (manufactured by Nippon Aerosil Co., Ltd.) was added as a lubricant to the hopper opening portion of the intermediate portion of the extruder 1. The interval width between the heating bolt and the casting mold 4 was adjusted to be 0.5 mm from the end portion of the film width direction of 30 mm, and the others were 1 mm. As the contact was light, the contact roller A was used, and the inside thereof was poured into cooling water of 80 °C. The position from the position P1 of the resin extruded from the casting die 4 to the first cooling roll 5 to the first cooling of the nip of the first cooling roll 5 contacting the roll 6-99-200949319 The length L of the circumferential surface of the first cooling drum 5 at the position P2 is set to 20 mm. Thereafter, the contact roller 6 is peeled off from the first cooling roll 5, and the temperature T of the molten portion before the nip of the first cooling roll 5 and the contact roll 6 is measured is measured. In the present embodiment, the temperature of the molten portion Τ' before the nip of the first cooling roll 5 and the contact roll 6 is 可由' can be increased by 1 mm from the upstream end Ρ2 of the nip (nip). The set thermometer (manufactured by Anritsu Co., Ltd., 200 Ε) was measured. The measurement result of this example was 141 ° C. The contact roller 6 has a linear pressure of 14.7 N/cm for the first cooling roller 5 and is introduced into the tenter, and is extended by 1.3 times in the width direction at 160 ° C, and then cooled to 30° while being 3% relaxed in the width direction. C, after which the self-pressing plate is opened, the pressing plate holding portion is cut off, and a slit of a width l〇mm and a height of 5 μm is applied to both ends of the film, the winding tension is 220 N/m, and the core winding is performed with a taper degree of 40%. take. Further, the film was adjusted to have an extrusion amount and a drawing speed to a thickness of 80 μm, so that the finished film had a width of 1430 mm and was taken up. The core has a size of 152 mm' inner diameter 165 to 180 mm and a length of 1550 mm. As the core material, a pre-stained resin in which an epoxy resin is immersed in glass fibers or carbon fibers is used. An epoxy-based conductive resin was coated on the surface of the core, and the surface was honed to have a surface roughness Ra of 0.3 μm. Moreover, the roll length is 2500 m. The film original sample of the present invention was used as the cellulose ester film 21. [Production of Cellulose Ester Films 22 to 35] In the production of the cellulose ester film 21, the type of the cellulose ester, the compound of the general formula (1) of the present invention, and other additives are changed as shown in Table 2-100-200949319. In addition to the above, cellulose ester films 22 to 35 were produced in the same manner. Further, the cellulose ester of the cellulose ester C-1 to be used is added in the same amount as the cellulose ester C-1, and is used in the compound of the general formula (1) of the present invention, and other additives. The types and addition amounts are the mass parts as shown in Table 2. [化32]

For the obtained cellulose ester film original sample, the N I % trace method was evaluated. The results of the assessment are shown in Table 1, Table 1-1, and the competition. In addition, a portion of the cellulose ester film was cut out from the original roll sample and evaluated by γ + π method and smog. Leakage (horseback failure, core transfer) -101 - 200949319 The coiled cellulose ester film original roll sample is double coated with a polyethylene film 'as shown in Figure 8 a), b), c) The storage method shown was carried out for 30 days under conditions of 25 t and 50% RH. Thereafter, it was taken out of the box, and the polyethylene sheet was opened, and the surface of the original film of the film was lighted and reflected by the fluorescent tube, and the deformation or slight disorder was observed. The horseback failure was rated according to the following level. A: I saw the fluorescent lamp in a straight line B: I saw some of the fluorescent lamps appear curved. C: I saw the spotlights of the fluorescent lamps, and the film samples were taken up and stored, and the dots were deformed by 50 μm or more, or The ribbon-shaped transfer in the width direction can be clearly seen by the core transfer, and the core is transferred from the core portion to a few m, and classified at the following level. A: The core part of the core is less than 15m B: The core part is less than 15~30m C: The core part is less than 30~50m D: The core part is 50m or more (the roll starts to fold) When the original roll film is taken up, and the roll starts to be broken, the original roll film is taken out from the core, and the winding operation is performed again. Calculate the number of defects at this time. After the operation was performed 10 times, the average 値 was obtained and the rating was given according to the following level. ' A: 0 times or more, less than 1 time -102- 200949319 B : 1 time or more, less than 3 times C : 3 times or more, less than 5 times D : 5 times or more (leakage) After standing for 1 000 hours in a high-temperature and high-humidity environment of 80 ° C and 90% RH, the presence or absence of leakage (crystal precipitation) on the surface of the cellulose ester film was visually observed and evaluated according to the following criteria. A: No leakage at all on the surface B: Leakage occurs on the surface C: only a slight leak on the surface is comprehensively D: A comprehensive leak on the surface is clearly defined (haze) by using a haze meter ( The measurement results of the 1001DP type and the Japanese electro-optical industry (manufacturing φ) were measured, and the smog when the sample thickness was 80 μm was converted and evaluated according to the following criteria. A: smog is less than 0.5% B: smog is 0 · 5~ is less than 1 · 0 % C : smog is 1. 0~ not up to 1 _ 5 % D: smog is more than 1.5% -103 - 200949319 [Is] The present invention The present invention The present invention The present invention The present invention comparative example comparative example comparative example comparative example smog &lt;&lt; C &lt;&lt; c &lt;&lt;;&lt;&lt;&lt;&lt;&lt;&gt; QQQQQ Leakage &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; PQ QQQQQ Volume begins to die 03 PQ Ρ3 « CQ (Ώ DQ &lt; C CQ QQQQQ Horseback Failure &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&gt; 0.10 0.50 j 1 loo | 0.10 0.10 0.10 0.10 0.10 0.10 1 0.10 1 1 0.15 0.50 0.15 Kind of exemplified compound 1-31 exemplified compound 1-31 exemplified compound 1-31 exemplified compound 1-20 exemplified compound 1-40 exemplified compound 1-46 Illustrative Compounds 1-31 Illustrative Compounds 1-31 Illustrative Compounds 1-40 Illustrative Compounds 1-31 璀Comparative Comparative Compounds Ph-1 Comparative Compounds Ph-1 Comparative Combinations Ph-2 cellulose ester ΰ 1 U FH ό ό ύ I u C-2 ΓΛ ό m ό C-4 ΰ C-3 u ΰ 纤维素 cellulose ester film No. Ν Ν m inch &lt;5 00 00 Ο (N m Inch-104 - 200949319

The invention is the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention, the invention The smog of the present invention &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;; CQ &lt;&lt; PQ &lt; PQ cn CQ PQ Volume begins to fall &lt;3 &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&gt;&lt;&lt;&lt;&gt;&gt; CQ PQ ffl ffl CQ 〇q CQ CQ CQ PQ CQ PQ Horseback Failure&lt;&lt;&lt; C &lt;&lt;&lt;&lt;&lt;&lt;&lt;&gt; CQ CQ &lt; CQ c PQ PQ &lt; 0Q P3 ffl CQ PQ The compound of the general formula (1)! part by mass 0.20 | Γ 0.20 1 f 0.20 1 1 0.20 | \ 0.20 | "0.20 1 1 0.20 | "0.20 ] | 0.20 j 1 0.20 | 0.20 j Γ 0.20 1 [0.20 1 | 0.20 | | 0.20 | | 0.20 | f 0.20 f 0.20 ] [0.20 | | 0.20 exemplified compound 1-31 exemplified compound 1-54 exemplified compounds 1-55 exemplified 1-50 exemplified compound 1-62 exemplified compound 1-70 exemplified compound 1-71 exemplified compound 1-1 exemplified compound 1-2 exemplified compound 1-3 exemplified compound 14 exemplified compound 1-5 exemplified compound l-io exemplified compound 1- 20 exemplified compound 1-40 exemplified compound 1-46 exemplified compound 1-10 exemplified compound M1 exemplified compound M3 exemplified compound M5 cellulose ester TH ό ΰ ΰ Ή Ή Ή ΰ ό ό ό ΰ ό ΰ ό ΰ ύ ΰ ό ύ纤维素 cellulose ester film No. 1 (Ν rn &lt;η τ-^ 1&gt; 00 On τ~Η Factory 1-10 Ί 1-11 1 ί-12 1 Γ 1-13 Ί 1 !-14 1 1 1- 16 1 _I 厂.1-17—Ί 1-18 1 1 Μ9 Ί 1-20 -105- 200949319 The present invention The present invention The present invention The present invention The present invention The comparative example of the comparative example of the present invention Example Comparative Example Smog &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; UUUQQ Core Transfer &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&nbsp; QQQOQ Volume Starts Collapse &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; QQQQQ Horseback Failure&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; CN S σ a &lt;N Ο, ri σ η 0 m σ (Ν οί σ (η (Ν σ •rT (Ν ο is 6 (N 6 m ά fS 豸σ &lt;N »—1 σ (N 〇ri σ o σ cn σ S′ m σ σ &lt;Π \,Ί 0.25 0.25 0.25 0.50 0.50 0.25 0.50 0.20 0.15 0.10 1 1 1 0.15 0.15 V- lie honey m I species exemplified compound 1-31 exemplified compound 1-31 Illustrative Compounds 1-31 Illustrative Compounds 1-31 Illustrative Compounds 1-40 Illustrative Compounds 1-31 Illustrative Compounds 1-31 Illustrative Compounds 1-31 Illustrative Compounds 1-31 Illustrative Compounds 1-31 m Destruction Comparative Compounds Ph-1 Comparative Compounds Ph-2 cellulose ester Cl ϋ ΰ ΰ ύ C-2 C-3 ό ό »-Η ύ 6 ύ ΰ 1&quot;^ ό 纤维素 cellulose ester film No· &lt;Ν (Ν m &lt;Ν &lt;Ν 00 CN OS (Ν (Ν mm Vi tn

-106- 200949319 From Table 1, Table 1-1, and Table 2, the cellulose ester film original sample containing the compound of the above general formula (1) related to the present invention is 1 to 10, 1-1 to 1-20 21 to 30, for the cellulose ester film original sample of the comparative example, 1 1 to 1 5, 3 1 to 3 5, which is known to have few horseback failures, core transfer, and coiling even after long-term storage. The cellulose ester film which is difficult to produce due to deformation of the original film of the film such as the initial folding. Further, the cellulose ester film cut out from the original roll itself has excellent leakage and haze characteristics for the comparative example. Example 3 The following composition was prepared. (Antistatic layer coating composition (1)) Polymethyl methacrylate (weight average molecular weight: 550,000, Tg: 90 ° C) 0.5 parts by mass Propylene glycol monomethyl ether 60 parts by mass

Methyl ethyl ketone 16 parts by mass of ethyl lactate 5 parts by mass of methanol 8 parts by mass of conductive polymer resin P-1 (0.1 to 〇.3 μηι particles) 0.5 parts by mass - 107 - 200949319 [Chemical 33] Conductive poly resin P -1 --CHtHz — ώ〇,- —〒H5 ——cch2 — c=o 1 0 1 CHj CH,-N-CH, CH* CHj 0 I • CH, Cs〇+m _ —CCH2— Lch* J Tn:n»93:7 (hard coating layer coating composition (2)) dipentaerythritol hexaacrylate monomer dipentaerythritol hexaacrylate 2 polymer dipentaerythritol hexaacrylate 3 mer component or more diethoxy Benzophenone photoreaction starter oxoxane surfactant propylene glycol monomethyl ether methyl ethyl ketone 60 parts by mass 20 parts by mass 20 parts by mass 6 parts by mass 1 part by mass 75 parts by mass 75 parts by mass (bending prevention layer coating Cloth composition (3)) Acetone ethyl acetate isopropyl alcohol diethylidene cellulose ultrafine particle cerium dioxide 2% acetone dispersion (AEROSIL: 35 parts by mass 45 parts by mass 5 parts by mass 〇. 5 parts by mass 200V, Japan AEROSIL Co., Ltd.) 0.1 parts by mass - 108 - 200949319 A polarizing plate protective film imparting a function is produced as follows. (Polarizing Plate Protective Film) The cellulose ester film original roll sample 1 of the present invention produced in Example 1 was double-coated with a polyethylene sheet, and stored as shown in Fig. 8, at 25 ° C, 50% RH. It was stored under the conditions of 30 days, and then stored at 40 ° C and 80% RH. Thereafter, each polyethylene sheet was removed, and the bending prevention layer coating composition (3) was gravure-printed to a wet film thickness of 13 μm on one side of the cellulose ester film wound from each original roll sample 0, and dried. Drying was carried out at a temperature of 8 〇 ± 5 °C. This was taken as a sample 1Α. On the other side of the cellulose ester film, the antistatic layer coating composition (1) was applied at a film transport speed of 30 m/min at a film width of lm at 28 ° C and 82% RH. The cloth to wet film thickness was 7 μm, followed by drying in a dried portion set to 80 ± 5 ° C, and a resin layer having a dry film thickness of about 0.2 μm was provided to obtain a cellulose ester film with an antistatic layer. φ This was taken as a sample 1Β. Further, the hard coating layer coating composition (2) was applied onto the antistatic layer to a wet film thickness of 13 μm, dried at a drying temperature of 90 ° C, and then irradiated with ultraviolet rays of 150 mJ/m 2 to provide a dry film thickness of 5 μm. Transparent hard coating layer. This was taken as sample 1C. The obtained cellulose ester film sample of the present invention, the sample 1Β, the sample 1 C, and the sample 1 C were free of brush marks, and there was no crack after drying, and the coating property was good, and the cellulose ester film original sample 1 was changed to The cellulose ester film of the present invention produced in Examples 1 and 2 was coated in the same manner except for the original sample 2 to 10, 1-1 to 1-109-200949319 20, and 21 to 30. The results were all confirmed to be good coatability. For comparison, the comparative cellulose ester film raw materials 11 to 15, 31 to 35 produced in Examples 1 and 2 were each subjected to the same method as described above, and the coating bending prevention layer was applied to the composition (3). Each of the samples 1 to 15A and 31 to 35A was applied, and each of the antistatic layer coating composition (1) was applied as samples 11 to 15B and 31 to 35B, and hard coating was applied to the antistatic layer. Each of the cloth coating composition (2) was used as a sample 1 1 to 1 5 C, 3 1 to 35C. As a result, when coating was performed in a high humidity environment, the sample 11 to 15A and 31 to 35A were brushed. Further, Samples 11 to 15B and 31 to 35B were finely cracked after drying, and samples 11 to 15 C and 31 to 35 C were clearly cracked after drying. Example 4 (Preparation and evaluation of polarizing plate) A polyvinyl alcohol film having a thickness of 120 μm was immersed in an aqueous solution containing 1 part by mass of iodine, 2 parts by mass of potassium iodide, and 4 parts by mass of boric acid, and extended at 50 ° C. Doubled into a photon. The cellulose ester film original samples 1 to 10, 1_1 to 1-20, 21 to 30 of the present invention produced in Examples 1 and 2 and the comparative cellulose ester film original samples 11 to 15, 31 to 35 were used. The polyethylene foil was wrapped in a double layer and stored in a storage method as shown in Fig. 8 at 25 ° C, 50% RH for 30 days, and after -110-200949319 at 40 °, 80% RH. Thereafter, each polyethylene sheet was removed, and the cellulose ester film which was taken up from each raw roll sample was subjected to alkali treatment for 60 seconds in a 2.5 mol/L sodium hydroxide aqueous solution at 40 ° C, and then subjected to alkali treatment after washing with water and drying. . On the both sides of the polarizer, the alkali-treated surfaces of the samples 1 to 10, 1-1 to 1-20, 21 to 30 of the present invention and the comparative samples 11 to 15, 31 to 35 were subjected to complete alkalization. The vinyl alcohol 5% aqueous solution is bonded to both surfaces as an adhesive to produce the polarizing plates PL-1 to PL-10, PL-1-1 to PL-1-20, PL-21 to PL of the present invention which form a protective film. -30 and the comparative polarizing plates PL-11 to PL-15, PL-31 to PL-35, and evaluated the planarity. (Evaluation of Characteristics of Liquid Crystal Display Device) A polarizing plate of a Sharp type 32 television AQ-32AD5 of a VA type liquid crystal display device was peeled off, and each of the polarizing plates produced above was cut in accordance with the liquid crystal cell size. Two types of polarizing plates prepared as described above were placed under the polarizing axis of the polarizing plate and directly bonded to each other to form a 32-type VA type color liquid crystal display, and the characteristics of the polarizing plate as an optical film were evaluated. &lt;Planarity&gt; The obtained polarizing plate was cut into an A4 size, and the both ends of the longitudinal direction were attached to the table with a tape on the horizontal table, and the flatness of the surface of the polarizing plate was visually observed on the following basis. Evaluation. A: No wavy spots on the surface -111 - 200949319 B: Only slightly wavy spots on the surface C: There are fine wavy spots on the surface D: There are large wavy spots on the surface (comparative) at 23 ° C 55% RH In the environment, turn on the backlight of the LCD TV and place it directly for 30 minutes.

A: Black gathers and is bright B: Black gathers, but the sharpness is slightly lower C: Black has no aggregation, and the sharpness is low D: Black has no aggregation: The result of low vividness is shown in Table 3; 〇-112- 200949319 [ table 3]

Polarizing plate No. Film used in the polarizing plate. Comparison of flat-panel liquid crystal display devices. PL-1 1 AA 芊Invention PL-2 2 AA PL-3 3 AB Umbrella invention PL-4 4 AA ψInvention PL-5 5 AA Not Invented PL-6 6 AA Invented PL-7 7 AA Invented PL-8 8 AA Invented PL-9 9 AA PL-10 10 AB PL-11 11 DD Ratio ρ Royal PL-12 21 DD Ratio _ PL-13 13 DD tbp#!l PL-14 14 DD than g example PL-15 15 CD Comparative example PL-1-1 1-1 AA 芊Invention PL-1-2 1-2 AA i Invention PL-1- 3 1-3 AA Feng invention PL-1-4 1-4 AA tmm PL-1-5 1-5 AA Feng invention PL-1-6 1-6 AA Feng invention PL-1-7 1-7 AA PL-1-8 1-8 BA PL-1-9 1-9 BA PL-1-10 1-10 BA of the present invention PL-1-11 1-11 BA Not invented PL-1-12 1-12 BA 芊Invention PL-1-13 1-13 BA ψInvention PL-1-14 1-14 BA PL-1-15 1-15 BA PL-1-16 1-16 BA PL-1-17 1-17 BB PL-1-18 1-18 BB ifmm PL-1-19 1-19 BB PL-1-20 1-20 BB Feng invention PL-21 21 AA Feng IP month PL-22 22 AA Feng invention PL-23 23 AA PL-24 24 AA Feng invention PL-25 25 AA Feng invention PL-26 26 AA Fengfa PL-27 27 AA Inventor PL-28 28 AA Invented PL-29 29 AA Invented PL-30 30 AA PL-31 31 DD Comparative Hungarian PL-32 32 DD Ratio _ PL-33 33 DD Comparative Example PL- 34 34 DD ratio _ PL-35 35 CD ratio i example - 113 - 200949319 As shown in the above table, the polarizing plate of the present invention? 1^1~? 1^-10,? 1^-1-1~PL-1-20, PL-21~PL-30 For the comparison of polarizing plates PL-11~PL-15, PL-3 1~PL-35, planarity and physicality can be achieved. When the excellent protective film protects both sides, it has a remarkable excellent effect of very good polarizing plate characteristics. Further, from the above table, it is known that the liquid crystal display devices using the polarizing plates PL-1 to PL-10, PL-1-1 to PL-1-20, and PL-21 to PL-30 of the present invention are more polarized than those used. The liquid crystal display devices of the plates PL-11 to PL-15 and PL-31 to PL-35 have high contrast and exhibit excellent display properties. This can be used as a polarizing plate for an image display device such as a liquid crystal display. BRIEF DESCRIPTION OF THE DRAWINGS [Fig. 1] A schematic flow chart of an embodiment of an apparatus for carrying out a method for producing an optical film (cellulose ester film) of the present invention. Fig. 2 is an enlarged flow chart showing an important part of the manufacturing apparatus of Fig. 1. Fig. 3 (a) is a view showing the appearance of an important part of a casting mold, and Fig. 3 (b) is a cross-sectional view showing an important part of a casting mold. Fig. 4 is a cross-sectional view showing a first embodiment of a rolling rotor. Fig. 5 is a cross-sectional view showing the rotation axis of the second embodiment of the rolling rotor in a vertical plane. Fig. 6 is a cross-sectional view showing a plane of a rotating shaft of a second embodiment including a rolling rotor. Fig. 7 is a perspective view showing a schematic configuration of a liquid crystal display device. Fig. 8 is a view showing the storage state of the optical film (cellulose ester film) original roll -114-200949319. [Description of main components] 1 : Extruder 2 : Filter 3 : Static mixer 4 : Casting mold A 5 : Rotating support (1st cooling roll) 6 : Rolling rotating body (contact roll) 7: Rotating support (second cooling roller) 8: Rotating support (third cooling roller) 9 : peeling roller 10 : film 11 : conveying roller 1 2 : stretching device © 13 : slitting machine 1 4 : embossing ring 1 5: Back roll: 16: Winding devices 21a, 21b: Protective films 22a, 22b: retardation films 23a, 23b: slow axis directions 24a, 24b of film: transmission axis directions 25a, 25b of polarizers: polarizers - 115- 200949319 26a, 26b: polarizing plate 2 7 : liquid crystal cell 29: liquid crystal display device 3 1 : molded body 3 2 : slit 41 : metal sleeve 42 : elastic roller 43 : metal inner cylinder 44 : elastic body 4 5 : Cooling water 5 1 : Outer cylinder 52 : Inner cylinder 53 : Space 5 4 : Cooling liquid 55 a , 55 b : Rotating shafts 56 a , 56 b : Outer cylinder supporting flange (Flange) 60 : Fluid shaft cylinder 61 a , 61 b : Inner cylinder supporting Flange 62a, 62b: intermediate passage 1 10 : core body 1 17 : support plate 1 1 8 : stand · 120: cellulose ester film original roll 120: cellulose ester film original roll -116-

Claims (1)

200949319 VII. Patent application scope: 1. An optical film characterized by containing at least one of the following compounds of the general formula (1) and a cellulose ester; [Chemical Formula 1] - General Formula (1) (wherein 'R1 and R2 each independently represent a substituent, R3 represents a hydrogen atom or an alkyl group, and η represents an integer of 0 to 4; and plural R1 may be the same or different). 2. The optical film according to claim 1, wherein at least one selected from the group consisting of a hindered phenol compound, a phosphorus compound, a lactone compound, and an acrylate compound is contained. A method of producing an optical film, which is characterized in that the optical film according to item 1 or item 2 of the application of the patent is produced by a melt casting method. A polarizing plate </ RTI> characterized in that the optical film of item 1 or item 2 of the patent application is provided on at least one side of the polarizer. A liquid crystal display device is characterized in that a polarizing plate as in the fourth aspect of the patent application is used. 6. a compound 'characterized by the following general formula (2); -117- 200949319 [Chemical 2] - general formula (2) CHS 十ch3 ch3 (wherein R4 to R6 each independently represent an alkyl group, a cycloalkyl group or an aryl group, R7 represents a substituent, and η represents an integer of 0 to 3; and plural R7 may be the same or different) -118-