TW200825135A - Light-diffusing resin composition, molded article and light guide comprising the same - Google Patents

Abstract

To provide a molded article (especially a light guide) excellent in balance of brightness (high brightness), light-diffusing performance and hue uniformity, and a light-diffusing resin composition for producing the molded article (light guide). The light-diffusing resin composition comprises (A) a cyclic olefin-based resin and (B) particles, and the content of the particles (B) is 10-10,000 ppm, based on 100 wt.% total weight of components (A) and (B). The particles (B) has at least one maximum value in each of a region having < 4.0 μm particle diameter and a region having ≥ 4.0 μm particle diameter, in particle size distribution based on the volume of particles (B).

Description

[Technical Field] The present invention relates to a light diffusing resin composition containing at least one extremely large particle in each of two specific regions containing a cyclic olefin resin and a particle size distribution, and A light-diffusing molded article obtained by molding the light-diffusing resin composition and a light-guide type light-emitting body used for a liquid crystal display device. [Prior Art] A light source used as a sidelight type backlight in the prior art has been a line source using a cold cathode tube or a linear light guide or the like. However, recently, for the improvement of the brightness of the backlight or the low power consumption, the use of one or a plurality of light sources such as LEDs has continued to become the mainstream. At this time, a light guide that spreads the light of the light source uniformly over the entire screen of the liquid crystal display device is used. A backlight light guide using a point light source is used as illumination of a liquid crystal display device. • When the device is used, there is a problem that a bright line is generated in the vicinity of the light source and partial brightness is not generated. The method of solving this problem is a method of dispersing the light-scattering particles in the light guide and uniformizing the brightness in the vicinity of the light source (see, for example, Japanese Laid-Open Patent Publication No. Hei 6-624330 (Patent Document 1)). The particles used in the prior art for imparting such a light diffusing function are inorganic particles such as glass, ceria, calcium carbonate, chromium oxide, cerium resin, or the like, or a propylene monomer or a styrene monomer as a main component. Polymerized, crosslinked organic polymer particles. However, in recent years, with the high brightness of the display, the high-brightness -4-200825135 LED is used as the light source, and in particular, the performance opposite to the light diffusibility and the light transmittance is required, and the prior art is dispersed with inorganic particles or The light diffusing resin composition of organic particles is difficult to achieve such a performance. [Problem to be Solved by the Invention] An object of the present invention is to solve the problems associated with the prior art as described above, and to provide brightness (high brightness) and light. A molded article excellent in balance between diffusing performance and color tone uniformity, particularly a light guide, and a light diffusing resin composition for producing a molded article thereof. [Means for Solving the Problem] The inventors of the present invention have found that the specific two regions in which the particle size distribution is mixed and dispersed in the cyclic olefin resin have a maximum in order to solve the above problems. Further, the particles are more preferably a resin composition of two kinds of particles having an average particle diameter in a specific range, and a plate-shaped molded article excellent in brightness (high brightness) and excellent in light diffusing property and color tone uniformity can be obtained, and this is also known. The plate-shaped molded article is suitable as a light guide for a backlight of a liquid crystal display device, and the present invention has been achieved. In other words, the light-diffusing resin composition according to the present invention contains the cyclic olefin resin (A) and the particles (B) in the stomach sign, and the total content of the particles (B) is 100% by weight or more. The ratio is 10 to 10,000 ppm on a weight basis, and the particles (B) are in a volume-based particle size distribution of 200825135, and a region having a particle diameter of less than 4.0 μm and a region having a particle diameter of 4·0 μm or more each have at least one maximum. value. The particles (Β) can be easily obtained by mixing particles (Β1) having a volume-based average particle diameter of 4.0 μm or more and particles having an average particle diameter of less than 4.0 μm (Β2). In the volume-based particle size distribution of the particle (Β1), the peak with the highest peak product is represented by a logarithmic normal distribution, and the geometric standard deviation gB1 is preferably 10 or more and 2.0 or less, and the volume of the particle (Β2) is preferably In the particle size distribution, when the peak having the largest peak area is represented by a logarithmic normal part, the geometric standard deviation agB2 is 1.0 or more and 2.0 or less, preferably the refractive index nA of the cyclic olefin-based resin (A) and the particle B1) The absolute 値|nB1-nA| of the difference of the refractive index nB1 is 0.04 or more, and the absolute 値|nB2-nA of the difference between the refractive index nA of the cyclic olefin resin (A) and the refractive index nB2 of the particle ( ) It is preferably 0.04 or more. At least a part of the particles (B) is preferably a hollow particle, and at least a part of the particles (B) is preferably an organic crosslinked particle. In the molded article of the present invention and the side light type rear light guide of the liquid crystal display device, the light diffusing resin composition is formed by injection molding. [Effects of the Invention] According to the present invention, it is possible to obtain an excellent manufacturing method. A resin composition of a molded article having excellent brightness and light diffusing performance and uniformity of color tone uniformity, and a molded article thereof, which is suitable for use as a side light type backlight for a liquid crystal display device. . [Best </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; b) First, explain the ingredients for these. (A) Cyclic olefin-based resin: The cyclic olefin-based resin (A) used in the present invention is a cyclic olefin (hereinafter also referred to as "cyclic olefin (I)") (total) polymer.

(I) In the formula (I), R1 to R4 are each independently a hydrogen atom, a halogen atom or an i-valent organic group, and R1 and R2, or r3 and r4 may be integrated to form a divalent organic group, R1 or R2, and R3 or R4 may also be bonded to each other to form a monocyclic structure or a polycyclic structure; m is 〇 or a positive integer, and p is 〇 or a positive integer. More specifically, the cyclic olefin-based resin (A) may, for example, be a ring-opening polymer of a cyclic hydrocarbon (I) (hereinafter also referred to as "polymer (1)") (2) a ring-shaped smog (I) a ring-opening copolymer with a copolymerizable monomer (hereinafter also referred to as "polymer (2)") (3) a hydrogenation (co)polymerization of ti (1) or polymer (2) 200825135 (hereinafter also referred to as "Polymer (3)") (4) Polymer (1) or polymer (2) cyclized by Friedel-Crafts reaction after hydrogenated (co)polymer (hereinafter also referred to as "Polymer (4)") (5) a saturated copolymer of (I) and a compound containing an unsaturated double bond (hereinafter also referred to as "polymer (5)") (6) a cyclic hydrocarbon (I), an addition (co)polymer of one or more monomers selected from the group consisting of a vinyl cyclic hydrocarbon monomer and a cyclopentadiene monomer, and a hydrogenated (co)polymer thereof (hereinafter also referred to as "Polymer (6)") (7) a cross-copolymer of a cyclic olefin (I) and an acrylate (hereinafter also referred to as "polymer (7)")" In terms of excellent transparency, etc. Especially good A polymer (3). &lt;Cyclic olefin (I) &gt;# The monovalent organic group in the above formula (I) may, for example, be a hydrocarbon group having 1 to 30 carbon atoms or a monovalent polar group other than a hydrocarbon group. Examples of the monovalent polar group include a carboxyl group, a hydroxyl group, an alkoxycarbonyl group, an allyloxycarbonyl group, an amine group, a decylamino group, and a cyano group. These polar groups may also be bonded via a methyl group or the like. Further, as a polar group, a hydrocarbon group bonded by a linking group formed by a polar valent organic group such as a carbonyl group, an ether group, a decyl ether group, a thioether group or an imine group may be mentioned. . Among these polar groups, a carboxyl group, a hydroxyl group, an alkoxycarbonyl group and an allyloxycarbonyl group are preferred, and an alkoxycarbonyl group and an allyloxycarbonyl group are particularly preferred. -8- 200825135 The cyclic olefin represented by the above formula (I) may be used alone or in combination of two or more. The cyclic anthracene hydrocarbon represented by the above formula (I) is exemplified by the following compounds, but is not limited thereto. Bicyclo[2.2.1]hept-2-ene, tricyclo[4.3,0.12,5]-8-decene, tricyclo[4.4.0.12,5]-3-undecene, tetracycline [HO.! 2,5"7'10]-"-Dodecene, pentacyclo[6·5.1 ·13'6.02'7"9'13]-4-pentadecene, 5-methylbicyclo[2.2.1 Hept-2-ene, 5-ethylbicyclo[2.2.1]hept-2-ene, 5-methoxycarbonylbicyclo[2·2·1]hept-2-ene, 5-methyl-5- Methoxycarbonylbicyclo[2.2.1]hept-2-ene, 5-cyanobicyclo[2·2·1]hept-2-ene, 8-methoxycarbonyltetracyclo[4.4.0.12'5.17'1 ()]-3-dodecene, 8-ethoxycarbonyltetracyclo[4.4.0.12'5·17'1()]-3-dodecene, 8-η-propoxycarbonyltetracyclic [4.4.0. I2'5.] 7'1 G]-3-dodecene, 8-isopropoxycarbonyltetracyclo[4.4.0. I2'5.17,1G]-3-dodecene , 8-11-Butoxycarbonyltetracyclo[4·4 ·0·12'5.17'10]-3-dodecene-8-methyl-8·methoxycarbonyltetracyclo[4·4· 0.12,5.Γ'1()]-3·Dodecene, 8-methyl-8·ethoxylated base four 哀[4.4.0.12'5.17'1()]-3-11* Carbene, 8-methyl- 8-η-propoxycarbonyltetracyclo[4.4.0.12,5·17'1()]-3-12-9-200825135 Carbene, 8-methyl-8- Isopropoxycarbonyltetracyclo[4.4.0.12'5.17,1()]-3-dodecene, 8·methyl-8-η·butoxycarbonyltetracyclo[4.4.0.:^ carbene , &quot; 5-Ethylene bicyclo[2.2.1]hept-2-ene, : 8-ethylenetetracyclo[4.4.0.12'5·17'1()]-3-dodecene, φ 5-phenylbicyclo[2.2.1]hept-2-ene, 8-phenyltetracyclo[4.4.0,12'5.17'1()]-3-dodecene, 5-fluorobicyclo[2.2. 1]hept-2-ene, 5-fluoroindolylbicyclo[2·2·1]hept-2-ene, 5-trifluoromethylbicyclo[2.2.1]hept-2-ene, 5-pentafluoroethyl Bicyclo[2.2.1]hept-2-ene, 5.5-difluorobicyclo[2·2·1]hept-2-ene, 5.6-difluorobicyclo[2.2.1]hept-2-ene, • 5, 5-bis(trifluoromethyl)bicyclo[2 ·2·1]hept-2-ene, .5,6-bis(trifluoromethyl)bicyclo[2.2.1]hept-2-ene, 5-methyl 5--5-trifluoromethylbicyclo[2.2.1]hept-2-ene, 5,556-trifluorobicyclo[2.2.1]hept-2-ene, 5.5.6- cis (fluoromethyl)bicyclo[2· 2·1]hept-2-ene, 5.5.6.6-tetrafluorobicyclo[2.2.1]hept-2-ene, 5.5.6.6-肆(trifluoromethyl)bicyclo[2.2.1]hept-2-ene , 5,5-difluoro-6,6-bis(trifluoromethyl)bicyclo[2.2.1]hept-2-ene, 5.6-difluoro-5,6-bis(trifluoromethyl) Bicyclo[2.2.1]hept-2-ene,-10-200825135 5.5.6-trifluoro-5·trifluoromethylbicyclo[2.2.1]hept-2-ene, alkene-2-ene 5-fluoropentafluoro Ethyl-6,6·bis(trifluoromethyl)bicyclo[2.2.1]heptane-, 5.6-difluoro-5-heptafluoro-iso-propyl-6-trifluoromethylbicyclo[2·2.1] Hept-5-chloro-5,6,6-trifluorobicyclo[2.2.1]hept-2-ene, 5,6-dichloro-5,6-bis(trifluoromethyl)bicyclo[2.2.1] Hept-2-ene, 5.5.6-trifluoro-6-trifluoromethoxybicyclo[2·2·1]hept-2-ene, 5,5,6-trifluoro-6-heptafluoropropoxy Bicyclo[2.2.1]hept-2-ene, 8-fluorotetracyclo[4.4.0.1 W.l7,1 G]-3-dodecene, 8-fluoromethyltetracyclo[4.4.0.12'5.17' 1()]-3-dodecene, 8-difluoromethyltetracyclo[4.4.0.I2'5·:!7'1 G]-3-dodecene, 8-trifluoromethyl Tetracyclo[4.4.〇.12,5.17,1()]-3-dodecene, 8-pentafluoroethyltetracyclo[4·4·0·12'5·17'1()]-3 - dodecene, 8.8-difluorotetracyclo[4.4.0.12'5.17'1()]-3-dodecene, 8,9.difluorotetracycline [4.4.0.12'5.17'1()] -3-dodecene, 8.8-bis(trifluoromethyl)tetracyclo[4.4.0.12,5.17'1()]-3-dodecene 8,9-bisfluoromethyl)tetracycline [4 ·4.0·12'5.Γ 1()]-3-dodecene-methyl 8.8.9-trifluorotetracyclo[4.4.0.12,5.17,1{)]-3-dodecene, 8.8.9-parafic (trifluoromethyl) Base) tetracyclo[4·4·0·12,5·Γ,1()]-3-dodeca-11 - 200825135 ene, 8.8.9.9-tetrafluorotetracycline [4.4.0.12, 5.17, 1 ( )]-3-dodecene, 8.8.9.9-肆(trifluoromethyl)tetracyclo[4.4.0.12,5.17,1()]-3-dodecene, 8.8-difluoro-9,9 - bis(trifluoromethyl)tetracyclo[4·4.0·l2,5·Γ,1()]-3-dodecene,

8.9-Difluoro-8,9-bis(trifluoromethyl)tetracyclo[4·4·0·12,5·Γ,1()]-3-dodecan, 8.8.9-trifluoro- 9-trifluoromethyltetracyclo[4.4.0.12, 5.17,1()]-3-dodecene, 8.8.9-trifluoro-9-trifluoromethoxytetracyclo[4.4.0.12,5. L7,1G]-3-dodecene, 8.8.9-trifluoro-9-pentafluoropropoxytetracyclo[4.4.0.12, 5.17,1()]-3-dodecyl storage, 8-fluoro -8-pentafluoroethyl-9,9-bis(trifluoromethyl)tetracyclo[4·4·0.12'5·Γ'1()]-3-dodecene, 8,9-difluoro -8-heptafluoroiso-propyl-9-trifluoromethyltetracyclo[4.4.0.12'5·Γ'1()]-3-dodecene, 8-chloro-8,9,9-three Fluorotetracyclo [4.4.0.12, 5.17,1()]-3-dodecene, 8.9-dichloro-8,9-bis(trifluoromethyl)tetracyclo[4·4·0·12,5 ·Γ,1()]-3-dodecene, 8-(2,2,2-trifluoroethoxycarbonyl)tetracyclo[4.4·0·l2,5·l7,lί)]-3· Dodecene, 8-methyl-8-(2,2,2-trifluoroethoxycarbonyl)tetracyclo-12- 200825135 [4·4·0·12,5.17'1()]-3- Dodecene and the like. In the cyclic olefin, the above formula (I), R1 and R3 are each independently a hydrogen atom or a hydrocarbon group having a carbon number of preferably from 1 to 10, more preferably from 1 to 4, particularly preferably 1 or 2. Preferably, it is an alkyl group, particularly preferably a methyl group, and R2 and R4 are each independently a hydrogen atom or a monovalent organic group, and at least one of R2 and R4 is a hydrogen atom or the above-mentioned monovalent polar group; m is The integer number of 0 to 3 is preferred, P is preferably an integer of 〇~3, m + p is preferably 0 to 4, and m + p 0 is particularly preferably 0 to 2, and most preferably m = 1, p = 0 ring of suspected hydrocarbons. The cyclic olefin having m = 1 and p = 〇 is most preferable from the viewpoint of obtaining a cyclic olefin-based resin having a high glass transition temperature and excellent mechanical strength. Further, at least one of R2 and R4 is a cyclic olefin having a polar group represented by the following formula (II), and has excellent glass transition temperature, low hygroscopicity, and excellent adhesion to various materials. From the viewpoint of a cyclic olefin resin, it is preferred. Xin-(CH2) nCOOR (II) In the above formula (π), R is preferably a hydrocarbon group having 1 to 12 carbon atoms, more preferably 1 to 4 carbon atoms, particularly preferably 1 or 2 carbon atoms, and more preferably an alkyl group. Further, η is usually 0 to 5, and a cyclic olefin having a small recovery of η is preferable because a cyclic olefin resin having a glass transition temperature cylinder can be obtained, and η is a cyclic olefin of ruthenium, and it is easy to synthesize. The words are particularly good. In particular, the polar group represented by the above formula (II) is bonded to the carbon atom to which the R1 or R3 of the alkyl group is bonded, and the ring-13-200825135-like olefin-based resin having low hygroscopicity can be obtained. It is preferable from the viewpoint. Polymer (1) and polymer (2): The above polymer (1) and polymer (2) may be subjected to ring-opening polymerization of the above cyclic olefin in the presence of a substitution catalyst or The cyclic olefin is obtained by ring-opening copolymerization of a copolymerizable monomer. φ <Copolymerizable monomer> The copolymerizable monomer used in the polymer (2) may, for example, be a cyclic olefin, preferably having a carbon number of 4 to 20, more preferably 5 to 12, more specifically The cyclic olefins such as cyclobutene, cyclopentene, cycloheptene, cyclooctene, and dicyclopentadiene may be used singly or in combination of two or more kinds thereof. The ratio of use of the copolymerizable monomer is preferably 100/0 to 5 0/5 0 by weight ratio (cyclic olefin/copolymerizable monomer), and more preferably Φ 100/0 to 60/40. In addition, "a cyclic olefin / copolymerizable monomer = 100 / 0 • ” means the ratio of use of a single polymerization of a cyclic olefin.螫 &lt;Catalyst for ring-opening polymerization&gt; The replacement catalyst used in the ring-opening (co)polymerization reaction is a catalyst composed of a combination of the compound (a) and the compound (b) described below. (a) A compound containing at least one element selected from the group consisting of W, Mo and Re. (b) containing at least one of the periodic table-14-200825135 lanthanum elements (such as Li, Na, K, etc.), lanthanum elements (such as Mg, Ca, etc.), group IIB elements (for example) Compounds of Zn, Cd, Hg, etc., elements of lanthanum elements (such as lanthanum, A1, etc.), IV lanthanum elements (such as S i, S η, Ρ b, etc.) and elements of group IVB (such as Ti, Zr, etc.) A compound having at least one of the foregoing elements and a bond of carbon or a bond of the aforementioned element to hydrogen. Further, in order to increase the activity, the above-mentioned replacement catalyst may further contain an additive (C) to be described later. Specific examples of the compound (a) include compounds described in WC16, MoC16, ReOCh, etc., in the upper left column of the eighth page of the first page of the first page of the eighth page, and the seventh column of the upper right column of the eighth page. Specific examples of the above compound (b) include n-C4H9Li, (C2H5) 3AI &gt; (C2H5) 2AICI &gt; (C2H5) KsAlCh.s '(C2H5)A1C12, methylaluminum tetrahydrofuran, LiH, etc. The compound described in the third column of the right upper column on the eighth page of the first page of the 1st to 1st 32,626 to the third row of the lower right column of the eighth page. As the above-mentioned additive (c), alcohols, aldehydes, ketones, amines and the like are preferably used, and it is also possible to use the eighth column of the lower right column of the first page of the Japanese Patent Publication No. 1 - 1 32626. The compound described in the first column of the upper left column. The ratio of the above compound (a) to the compound (b), in terms of the metal atomic ratio [(a) : (b)], is usually 1··1 to 1:50, preferably 1:2 to 1: 3 0. The ratio of the above additive (c) to the compound (a) is usually 0.005:1 to 15:1, preferably -15-200825135 0.05 :1 in terms of molar ratio [(c): (a)]. 7 : 1 The amount of the ruthenium-substituted catalyst is usually such that the molar ratio of the above compound (a) to the cyclic storage smog [(〇: cyclic olefin) becomes 1: 50,000 〜 ii: 50,000' 1: 1, 〇〇〇 ~ &quot; 〇〇〇 quantity. &lt;Solvent for polymerization reaction&gt;: In the ring-opening (co)polymerization reaction, the solvent is used as a solvent constituting a molecular φ amount adjuster solution to be described later, or a solvent for a cyclic olefin and/or a substitution catalyst. Examples of such a solvent include alkanes such as pentane, hexane, heptane, xinyuan, decane, and decane; and cyclohexanes such as cyclohexane, cycloheptane, cyclooctane, decalin, and norbornene. Class; aromatic hydrocarbons such as benzene, toluene, xylene 'ethylbenzene, and halogen; halogenated chlorobutane, bromohexane, dichloromethane, dichloroethane, dibromohexamethylene, chloroform, tetrachloroethylene, etc. Halogenated aryl group such as chlorobenzene; saturated carboxylic acid ester such as ethyl acetate, η·butyl acetate, iso-butyl acetate, methyl propionate, dibutyl ether, tetrahydrofuran, dimethoxyethane, etc. Ethers. φ These solvents may be used singly or in combination. In these, the amount of the aromatic hydrocarbon is preferably used, and the weight ratio of the solvent to the cyclic olefin (conducting solvent: cyclic olefin) is usually 1:1. 10:1, preferably 1:1 to 5:1. &lt;Molecular weight modifier&gt; The molecular weight of the obtained ring-opened (co)polymer can be adjusted by the polymerization temperature, the type of the catalyst, and the kind of the solvent, but can also be adjusted by adjusting the amount of the molecule-16-200825135. The agent is coexisted in the reaction system and adjusted. Suitable molecular weight modifiers include, for example, ethylene, propylene, 1β butene, 1-pentene, 1-hexene, 1-heptene, decyl octene, decene-decene, decene, and the like. And styrene, in which b butene and b hexene are particularly preferred. Further, these molecular weight modifiers may be used singly or in combination of two types for use. The amount of the molecular weight modifier used is usually from 0.005 to 0.6 mol, preferably from 0.01 to 0.5 mol, based on 1 mol of the cyclic olefin to be supplied to the ring-opening polymerization inverse φ. The above-mentioned ring-opening copolymer can be obtained by ring-opening copolymerization of a cyclic olefin and a copolymerizable monomer to obtain a conjugated diene compound such as polybutadiene or polyisobutylene, a styrene-butadiene copolymer, or the like. The cyclic olefin is subjected to ring-opening copolymerization in the presence of an unsaturated hydrocarbon polymer containing two or more carbon-carbon double bonds, such as an ethylene-non-conjugated diene copolymer or polynorbornene. • (3) Hydrogenated (co)polymer: The above-mentioned ring-opening (co)polymer can be used as it is, but the hydrogenated (co)polymer (3) obtained by hydrogenation is further suitable as the impact resistance. Excellent resin use. The hydrogenation reaction can be carried out by a usual method, that is, hydrogen gas at a pressure of from 300 to 300 atmospheres, preferably from 3 to 200 atmospheres, can be obtained by adding a hydrogenation catalyst to a solution containing a ring-opening (co)polymer. Use 0~200. (:, preferably carried out at a temperature of 20 to 180 ° C. -17- 200825135 &lt;Hydrogenation Catalyst&gt; As the above hydrogenation catalyst, a catalyst used for a hydrogenation reaction can be used. This hydrogenation catalyst can be used as a catalyst. The heterogeneous catalyst may, for example, be a solid catalyst in which a palladium: noble metal catalyst is placed on a carrier such as carbon or titanium dioxide. Uniform catalyst = Φ ethyl aluminum, nickel acetonitrile acetone / triethyl aluminum, octane; chlorotitanium dichloride / diethyl aluminum chloride, cerium acetate, dichloro ginseng (triphenyl phosphine) hydrazine, chlorine Hydrogen carbonyl dichlorocarbonyl ginseng (triphenylphosphine) ruthenium and the like. These can also be granular. These hydrogenation catalysts are used in an amount such that the ratio of the open catalyst (open-cell (co)polymer: 1 χ 10_6 to 1: 2 is preferred. • The above hydrogenated (co) polymer (3) has. Even Deterioration during molding or as a product. Gasification of (co)polymer (3); conditions: 値 measured by 1H-NMR, usually 70% or more, more preferably 90% or more, especially It is better than 9 9%. The higher the hydrogenation rate, the more uniform catalysts and the average, platinum, nickel, ruthenium, osmium, etc., which are similar to those of the olefinic compounds which have been stabilized for a long period of time. , Alumina, and Dioxide&gt; may be exemplified by nickel naphthenate/three-cobalt cobalt/η-butyllithium, dichlorostilbene (triphenylphosphine) ruthenium (triphenylphosphine) ruthenium, and catalyst form. It can be a powder ring (co)polymer and a hydrogen:hydrogenation catalyst. It has excellent thermal stability and heating, and this characteristic is also not high. It is 50% or more, preferably 98% or more at 500 MHz. , the best light guide for better thermal or light stability, etc. 18-200825135 In addition, the above hydrogenation (total Polymer (3), based gel content is preferably 5 wt% or less, particularly preferred is 1 wt% or less. (4) Hydrogenated (co)polymer·· The above hydrogenated (co)polymer (4), the ring-opening (co)polymer of the above (1) or (2) can be reacted by Friedel-Rafts reaction After cyclization, it is obtained by hydrogenation. The method of cyclizing the above-mentioned ring-opening (co)polymer by the Friedel-Rafts reaction is not particularly limited, and for example, an acidic compound described in JP-A-2005-145494 can be used. The known method. Specific examples of the acidic compound include Lewis acid such as A1C13, BF3, FeCl3, Al2〇3, HCl, CH3ClCOOH, zeolite, and activated clay, and Bronsted acid. The cyclized ring-opened (co)polymer can be hydrogenated in the same manner as the hydrogenation reaction of the above ring-opened (co)polymer. (5) Saturated copolymer: The above saturated copolymer (5) can be obtained by subjecting a cyclic olefin to a compound containing an unsaturated double bond in the presence of an addition polymerization catalyst. The addition polymerization method can use the method of the prior art. &lt;Compound containing unsaturated double bond&gt; The compound containing an unsaturated double bond may, for example, be an olefin-based compound such as ethylene, propylene or butylene. Among them, it is preferred that the carbon number is preferably from 2 to -19. - 200825135 1 2, more preferably an olefinic compound of 2 to 8. The compound containing an unsaturated double bond is used in a weight ratio of a cyclic olefin to a compound containing an unsaturated double bond (a cyclic olefin/a compound containing an unsaturated double bond), 90/10 to 40/60. Good, 85/1 5~50/50 is better. However, the total weight of the cyclic olefin and the compound containing an unsaturated double bond is set to 100 〇 φ &lt;Addition polymerization catalyst&gt; The addition polymerization catalyst may, for example, be a combination of at least one compound selected from a titanium compound, a cone compound and a vanadium compound, and an organoaluminum compound as an auxiliary catalyst. Examples of the titanium compound include titanium tetrachloride and titanium trichloride; and the zirconium compound may, for example, be bis(cyclopentadienyl) chromium chloride or bis(cyclopentadienyl) chromium dichloride; , which may be exemplified by the following formula: VO ( OR) aXb, or V ( OR) cxd [only, R is a hydrocarbon group, X is a halogen atom, 0SaS3, 0SbS3, 2S ( a + b) S3, OSd 0$dS4, 3$ (c + d) $4. The vanadium compound or the electrons represented by the above are added to the adduct. The electron donor may be an oxygen-containing electron such as an alcohol, a phenol, a ketone, an aldehyde, a carboxylic acid, an ester of an organic acid or an inorganic acid, an ether, an acid amide, an acid anhydride or an alkoxysilane. A nitrogen-containing electron donor such as ammonia, amine, nitrile or isocyanate. -20- 200825135 The above organoaluminum compound may, for example, be a compound having at least one aluminum-carbon bond or aluminum-hydrogen bond. These organoaluminum compounds may be used singly or in combination of two or more. The amount of the compound selected from the group consisting of a titanium compound, a chromium compound, and a vanadium compound (the total amount of the two or more types used in combination) and the amount of the organoaluminum compound used, and the ratio of the aluminum atom to the titanium atom or the like (Al/Ti or the like) is usually 2 or more, preferably 2 to 50, particularly preferably 3 to 20 °. The solvent used in the above-mentioned addition polymerization reaction may be mentioned in the above ring-opening (co)polymerization reaction. The solvent exemplified. Further, the adjustment of the molecular weight of the saturated copolymer (5) can usually be carried out using hydrogen. (6) Addition (co)polymer and its hydrogenated (co)polymer·· The above-mentioned addition (co)polymer (6) can be formed by addition polymerization of the above cyclic olefin from ethylene It is obtained by using one or more types of monomers selected from hydrocarbon monomers and cyclopentadiene monomers. &lt;Ethylene-based cyclic hydrocarbon-based monomer&gt; The vinyl-based cyclic hydrocarbon-based monomer may, for example, be a vinyl ring such as 4-vinylcyclopentene or 2-methyl-4-isopropenylcyclopentene. a vinylated 5-membered cyclic hydrocarbon monomer such as a pentene monomer, a vinylcyclopentane monomer such as 4-ethenylcyclopentane or 4-isopropenylcyclopentane, or a 4-vinyl ring Hexene, 'isopropenylcyclohexene, 1-methyl-4-isopropenylcyclohexene, 2-methyl-4-ethene-21 - 200825135 cyclohexene, 2-methyl-4-iso Vinylcyclohexene monomer such as propylene cyclohexene, vinyl cyclohexane monomer such as 4-vinylcyclohexane or 2-methylisopropenylcyclohexane, and ethylene, α-methyl Styrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, vinyl naphthalene, 2-vinylnaphthalene, 4-phenylstyrene, ρ-methoxystyrene, etc. Styrene monomer, terpene, 1-decene, diterpene, d_limonene, dialene, dipentene, etc., olefinic monomers, 4-vinylcycloheptene, 4-isopropenyl Vinyl φ cycloheptene monomer such as cycloheptene, '4-vinylcycloheptane, 4-isopropenylcycloheptane And other vinyl monomers cycloheptyl faculty. Among these monomers, styrene and α-methylstyrene are preferred. Further, these monomers may be used alone or in combination of two or more. &lt;Cyclopentadiene-based monomer&gt; Examples of the cyclopentene-based monomer include cyclopentadiene, fluorene-methylcyclopentadiene, 2-methylcyclopentadiene, and 2-ethyl group. Cyclopentadiene, 5-methylcyclopentadiene, 5,5-methylcyclopentadiene, and the like. Among these monomers, cyclopentadiene is preferred. Further, these monomers may be used alone or in combination of two or more. The above-mentioned addition polymerization reaction can be carried out in the same manner as the addition polymerization reaction in the saturated copolymer (5). The hydrogenated (co)polymer of the above-mentioned addition (co)polymer (6) can be hydrogenated by the same method as the above hydrogenated (co)polymer (3) by the above-mentioned addition (co)polymer (6) And get it. -22- 200825135 (7) Cross-copolymer: The above-mentioned cross-copolymer (7) can be obtained by radically polymerizing the above cyclic olefin and acrylate by a Lewis acid or the like. &lt;Acrylate&gt; The acrylate may, for example, be a linear branched or cyclic alkyl acrylate having 1 to 20 carbon atoms such as methacrylate, 2-ethyl acrylate or cyclohexyl acrylate; a heterocyclic group-containing propylene having 2 to 20 carbon atoms such as glyceryl acrylate or 2-mercapto acrylate; an aromatic cyclic olefinic acid ester having 6 to 20 carbon atoms such as a benzyl acrylate; an isobornyl group An acrylate having a polycyclic structure of carbon to 30 such as acrylate or dicyclopentyl acrylate. The ratio of the above cyclic olefin to acrylate is such that the total amount of the cyclic olefin is 30 to 70 moles, and the acrylate is f 30 to 30 moles, preferably the cyclic olefin is 40 to 60. Mohr, acrylic 60 to 40 moles, particularly preferred cyclic olefins are 45 to 55 moles, and propyl esters are 55 to 45 moles. The Lewis acid is preferably used in an amount of 0.001 to 1 mol based on the acrylate 100. Further, a conventional organic peroxide nitrogen-based radical polymerization initiator which generates a radical can be used. The polymerization temperature is usually -2 0 ° C to 80 ° C, preferably 5 ° C ~. Further, the solvent for the polymerization reaction may, for example, be a solvent exemplified in the above ring-opening (co) reaction. In the lower base, the tetrahydrogenate has a C number of 1 δ, and the I 70 ester is an oleic acid molar or an even 60 ° C polymerization. -23- 200825135 Further, the meaning of the "interactive copolymer" in the present invention is A copolymer derived from a structural unit of a ring-shaped smog that is not adjacent to each other, that is, a copolymer derived from a structural unit of an acrylate bonded to a structural unit derived from a cyclic olefin. However, the structural unit derived from the acrylate may be adjacent to each other and may have the intrinsic viscosity [Tlinh] of the cyclic olefin-based resin used in the present invention, preferably 0.2 to 5 dl/g, more preferably 0.3 to 3 dl/g, 〇·4 ~1.5dl/g is especially good. In addition, tetrahydrofuran was used as a solvent, and the polystyrene-converted molecular weight, number average, measured by permeation chromatography (GPC, column: TSKgel G7000HXLx 1 , TSKgel GMHXLx2, and TSKgel G2 000HXLxl, 4 歹1J) The molecular weight (?η) is preferably 8,000 to 100, 〇〇〇, more preferably 10,000 to 80,000, particularly preferably 1 2,000 to 50,000, and the weight average molecular weight (Mw) is preferably 20,000 to 300,000, more preferably 30,000 to 250,000, particularly preferably 40,000 to 200,000 ° Intrinsic viscosity [lnh], number average molecular weight (??), and a cyclic olefin resin having a weight average molecular weight (Mw) in the above range, and excellent formability and heat resistance. A molded article excellent in water resistance, chemical resistance, and mechanical properties. Further, the glass transition temperature (Tg) of the above cyclic olefin-based resin is usually 130 ° C or higher, preferably 130 to 350 ° C, more preferably 130 to 250 ° C, particularly preferably 1 4 0~2 0 0 °C. A resin having a T g in the above range is not easily deformed even under high-temperature conditions or secondary processing by heating such as coating and printing, and is excellent in moldability and is also difficult to be formed by molding from -24 to 200825135. Heat causes deterioration of the resin. The refractive index nA of the resin can be appropriately adjusted by the kind of the monomer to be used and the polymerization ratio, for example, 8-methyl-8-methoxycarbonyltetracyclo[4.4.0.12'5.17'1()]-3 - The hydrogen addition product of the dodecene oxide 0 ring-opening individual polymer is ί·51 '8-methyl-8-methoxy pentyltetracycline [4·4.0.12, 5.l7, 10]-3 - The hydride of the eleven carbon fine and the double fe[2·2·l]heptan-2-discriminating ring copolymer (composition weight ratio = 9:1) is 1.5 1,8-ethylenetetracyclo[4.4 The hydrogen addition product of the 0.12, 5.17, 10]-3 - dodecene ring-opening polymer alone at 1.5 ° C is 1.52. (B) Particles: The particles (B) used in the present invention are particles formed of a polymer component having an inorganic or organic surface, and may be composed of one component, and may be, for example, a core-shell type. Composite particles composed of two or more particles. The outer shape of the particles is not particularly limited, but a spherical particle having no corner portion on the surface is preferable, and the light diffusing property of the obtained light-diffusing molded article is excellent in the balance between light diffusibility and brightness. Among such particles, hollow particles having one or a plurality of voids inside are preferable because the balance between light diffusibility and brightness is further increased. The particles (B) used in the present invention have a particle size distribution of less than 4·〇 μπι and a region of 4.0 μm or more each having at least one maximum enthalpy in the volume-based particle size distribution. When particles having such a particle size distribution are used, a molded article which is excellent in light diffusibility and which is less likely to cause color dispersion in the light guiding direction can be obtained. The particles (Β) having the above particle size distribution can be obtained by mixing particles (B1) having an average particle size of -25 to 200825135 of 4·0 μm or more and particles (B2) of less than 4.0 μm, and the particles (Β1) The average particle diameter is preferably 4·0 μm or more and Ο.Ομχη or less, more preferably 5·0 μπι or more and 8.0 μηη or less, and particularly preferably 5·0 μιη or more and 7.0 μπι or less. The average particle diameter of the particles (Β2) is preferably 0·2 μm or more and less than 4.0 μm, more preferably 0.3 μm or more and 3.0 μm or less, and particularly preferably 0.7 μm or more and 2·0 μm or less. When the average particle diameter of the particles (?1) and (?2) is in the above range, particles (?) having the above particle size distribution can be easily obtained. Further, in the present specification, the meaning of the average particle diameter of the particles means the particle size distribution on a volume basis, and the cumulative value of the frequency indicates a particle diameter of 50% (refer to the Chemical Engineering Handbook, Revision 5, page 221). Further, in the volume-based particle size distribution of the above-mentioned particles (Β 1 ), when the peak having the largest peak area is represented by a log-normal distribution (refer to the Chemical Engineering Handbook Rev. 5, p. 221), the geometric standard deviation ag1, Preferably, the peak of the peak area is represented by a logarithmic normal distribution in a volume-based particle size distribution of the particle (B2). The geometric standard deviation (JgB2, preferably 1 〇 or more and 2.0 or less, more preferably 1.1 or more and 1.5 or less). By using particles (Β) having a geometric standard deviation within the above range, excellent light diffusibility and light guiding can be obtained. The refractive index ηΒ1 &amp; ηΒ2 of the particles (Β1) and (Β2) can be appropriately changed by changing the kind or polymerization ratio of a crosslinkable monomer or another polymerizable monomer to be described later. The present invention is characterized in that the refractive indices nBi and ηΒ2 are in agreement with the refractive index η of the cyclic olefin-based resin (A), and the absolute 値|ηΒ1-ηΑ|, |ηΒ2·ηΑ| More preferably 0.04 or more,佳 -26- 200825135 〇·〇4~〇·9, and even better 〇·〇5~0.85, especially good 〇.〇6~0.80. Furthermore, the refractive indices nA, nB1 and nB2 are The refractive index of the d-line measured at 25 ° C. |nB1-nA| and |nB2-nA| are in the above range, and a molded article having excellent light diffusibility and low light reflection can be obtained. Further, the above particles (B) When at least a part of the hollow particles are hollow particles, the void ratio of the hollow particles is preferably 0.01 to 60% by volume, more preferably 0.015 to 55 % by volume, and particularly preferably 0.02 to 50% by volume. The hollow particles having a void ratio in the above range It is excellent in the light-diffusion property, and is excellent in the dispersibility in the cyclic olefin-type resin. Moreover, the said cavity ratio is the thing which the hollow particle|grains are the dispersion of the cyclic olefin-type resin (A). Any conventional particles, inorganic hollow particles, organic particles or organic hollow particles may be used as long as they have the above characteristics. Examples of the inorganic particles and the inorganic hollow particles include glass, SiO 2 , CaC03, and polyorganisms. Inorganic particles such as a siloxane compound. Organic Examples of the organic hollow particles such as acryl-based or styrene-based organic cross-linking particles, etc., in consideration of affinity or moldability with the cyclic olefin-based resin (A), etc. The organic cross-linking particle is a specific example of the above-mentioned organic cross-linking particle, and it is exemplified by JP-A-62-1, 2,733, JP-A-H05-31454, and JP-A-2004-216771. The organic hollow particles disclosed in JP-A-2002-24 No. 448. Further, the organic crosslinked particles can be obtained by polymerizing a crosslinkable monomer as described below with another polymerizable monomer. -27- 200825135 The above crosslinkable monomer is preferably a non-conjugated divinyl compound such as divinylbenzene; a polyvalent acrylic acid such as trimethylolpropane trimethacrylate or trimethylolpropane triacrylate. A compound having two or more, preferably two, copolymerizable double bonds, such as an ester compound. Examples of the above polyvalent acrylate compound include polyethylene glycol diacrylate, 3-butanediol diacrylate, 1,6-hexanediol diacrylate, neopentyl glycol diacrylate, and polypropylene glycol diacrylic acid. a diacrylate compound such as an ester, 2,2-bis(4-propenyloxypropoxyphenyl)propane or 2,2-bis(4-propenyloxydi-ethoxyphenyl)propane; Triacrylate compound such as propane triacrylate, trimethylolethane triacrylate, tetramethylol methane triacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, three Ethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, 1,3-butanediol dimethacrylate, iota, 4-butanediol dimethacrylate, 1,6-hexyl Diol dimethacrylate, neopentyl glycol dimethacrylate, dipropylene glycol dimethacrylate, polypropylene glycol dimethacrylate, 2,2-bis(4-methylpropenyloxydiethoxylate) Diphenyl acrylate compound such as propane; trimethylolpropane trimethacrylate, trishydroxyl Trimethylethane methacrylate acrylate compound. Among the above crosslinkable monomers, divinylbenzene, ethylene glycol dimethyl acrylate and trimethylolpropane trimethacrylate are preferred, and divinylbenzene is particularly preferred. Further, the above crosslinkable monomers may be used singly or in combination of two or more. Examples of the other polymerizable monomer include aromatic vinyl compounds such as styrene, α-methylstyrene, -28-200825135 fluorostyrene, and vinylpyridine; and acrylonitrile-methyl acetonitrile and the like. Base compound; butyl (meth) propionate, 2-ethylhexyl (meth) acrylate, methyl (meth) acrylate, 2- phenylethyl (meth) acrylate, shrinkage (meth) acrylate such as glyceryl (meth) acrylate; unsaturated fatty acid such as acrylic acid, methacrylic acid, maleic acid or itaconic acid; guanamine monomer such as acrylamide or methacrylamide; . A method of forming voids in the inside of the organic crosslinked particles obtained by polymerizing the crosslinkable monomer and another polymerizable monomer can be carried out by a conventional method. Specifically, (1) preparing an organic crosslinked particle containing a foaming agent, and then foaming the foaming agent (2) to prepare an organic crosslinked particle sealed with a volatile substance such as butane, and then a method for vaporizing and expanding the volatile substance (3) dissolving a polymer of a crosslinkable monomer and another polymerizable monomer, in which a gas such as air is injected, and after the bubble is sealed in the polymer, Method for polymerizing particles (4) A method of preparing an organic crosslinked particle containing a substance of an alkali swelling, and then allowing an alkaline liquid to permeate into the organic crosslinked particle to expand an alkali-expanding substance (5) a method in which styrene is emulsion-polymerized by using fine particles of polymethacrylate as seed particles in the presence of such particles (6), and other polymerizable monomers are finely dispersed in water to prepare an oil-in-water emulsion in which water is used. Method for adding post-crosslinking monomer and then polymerizing -29- 200825135 (7) Two-stage cross-linking method for polymerizing and cross-linking incompatible cross-linkable polymer using organic cross-linking particles as seed particles (8) by crosslinkable monomers and A method of producing a polymerizable polymer of a polymerizable monomer by shrinkage (9) a method of spray-drying organic crosslinked particles, etc., wherein each of the methods represented by (4) to (9) is preferably used. The glass transition temperature (Tg) of the organic hollow particles is desirably 1 〇 (TC or more) from the viewpoint of not excessively damaging the heat resistance of the molded article obtained from the resin composition of the present invention. In particular, the resin of the present invention is used. When the composition is molded at a temperature of a hot-melt cyclic olefin-based resin such as injection molding or extrusion molding, it is desirable that the organic hollow particles are not melted by the heating and melting temperature of the cyclic olefin resin. Further, the present invention is prepared by using an organic solvent. In the case of the resin composition, it is preferably insoluble in the organic solvent. [Light-diffusing resin composition] The light-diffusing resin composition according to the present invention contains the cyclic olefin resin (A) and the particles (b). The total content of the 1% by weight of the particles (B) is 1 〇 to 1 重量 by weight, and 〇〇〇 ppm ' is preferably 1 〇 to 2,000 ppm. The particles are blended in the above range. (B), a molded article excellent in balance between light diffusibility and light transmittance can be obtained. Further, the particle (B) is in a volume-based particle size distribution, and a particle diameter of less than 4.0 μm is in a region. The ratio of the cumulative enthalpy (b1) of the rate to the cumulative enthalpy (b2) of the frequency of the region above 4 〇μπι, and b 1 and b2 are determined to be 1 〇〇 vol%, and b 1 is preferably 1 〇 to 9 0 5% by volume, more preferably 20 to 70% by volume, more preferably -30-200825135. By using the particles (B) having b 1 in the above range, a molded article having excellent light diffusibility and being less likely to cause color dispersion in the light guiding direction can be obtained. When the particle size distribution particle (B) and the total of the particles (B1) and (B2) are 100% by weight, the particle (B1) is preferably 20 to 90% by weight, more preferably 30 to 80% by weight. %, particularly preferably in the range of 40 to 75 wt%, can be easily obtained. Further, when the hollow particles are used as the particles (B) in the above light-diffusing resin composition, the inside can be in a hollow state (maintaining voids) In the state in which the cyclic olefin resin is immersed, it is not particularly limited. Further, the light-diffusing resin composition may be blended, for example, in a range that does not impair the effects of the present invention. -22 1 577, and JP-A-10-28-7732 Specific hydrocarbon-based resin, or a conventional thermoplastic resin, thermoplastic elastomer, rubbery polymer, organic fine particles, inorganic fine particles, etc. Further, 2,6-di-t-butyl-4 may be added by adding -methylphenol, 2,2,-dihydroxy-3,3,-di-t-butyl-5,5,_dimethyldiphenylmethyl, 肆[methyl- 3-(3, a conventional antioxidant such as 5-di-t-butyl-4-pyridylphenyl)propionate] methane; 2,4-dihydroxybenzophenone, 2-carbamic-4-methoxy 2 An ultraviolet absorber such as benzophenone or a benzylmalonate-based compound stabilizes the light-diffusing resin composition. Further, additives such as a slip agent may be added for the purpose of improving workability. The method for preparing the light-diffusing resin composition, that is, the method for blending the cyclic olefin-based resin (A) and the particles (Β), is not particularly limited, and may be blended by a conventional method. For example, (1) the particles (B) are dispersed in the state of -31 - 200825135 in which the cyclic olefin-based resin (A) is dissolved in a soluble solvent, and the solvent is removed by a conventional method to obtain the resin composition. (2) A method of dispersing the particles (B) in a state in which the cyclic olefin-based resin (a) is melted. In the preparation method of the above (1), the solution containing the cyclic olefin resin (A) can be a solution after polymerization, a solution after hydrogenation, a solution after catalyst removal, a concentrated solution, and dissolved in a granular form. A solution of the cyclic olefin resin (A) or the like. Further, the 'mixing method is not particularly limited, and for example, a method of mixing using a conventional agitator or a solution containing a cyclic olefin-based resin (A) and particles (B) can be simultaneously supplied to a conventional extruder. And at the same time, the method of solvent removal and dispersion is carried out. On the other hand, the preparation method of the above (2) may, for example, be a method using a conventional uniaxial or biaxial extruder. The cylinder diameter of the extruder is usually 10 to 00 mm. The screw can also be used by a conventional person, for example, a single shaft, a combination of a full range, a subflight, a group of Dulmage, a screw pitch or a groove deeper than the same in the screw. For the two-axis, if you can freely combine two or three screws, screws in different directions or in the same direction, and screws in the screw parts, the shape of the screw parts can be from the screw, the reverse screw, the slurry screw, the propeller The screw or the like is freely selected and then incorporated. The extruder can be used only in one unit, or two or more units, and continuous and batch type kneading machines can be used, and the raw materials can be supplied to the extruder by a plurality of feeders. In addition, the particles (B) can be supplied in the middle of the extruder. -32- 200825135 In addition, the cyclic olefin resin (A) and the particles (B) can be blended using a conventional drum type or rotary type. A mixer such as a machine or a Henschel mixer or a planetary mixer is mixed in advance in a solid state, and then supplied to an extruder to disperse the particles (B) in the cyclic olefin resin (a). Both the above cyclic olefin-based resin (A) or the cyclic olefin-based resin (A) and the particles (B) are preferably dried by a conventional method. Examples of the drying method include hot air drying, dehumidifying drying, vacuum drying, and nitrogen drying. The drying temperature or the drying time is not particularly limited, and can usually be arbitrarily set within the range of (Tg - 100 ° C ) to (Tg - 20 ° C ), and the drying time is usually set within the range of 2 to 6 hours. It is also preferable to seal (enclose) the hopper, the inlet port, the vent, the die face, and the like of the extruder in an inert gas such as nitrogen or argon. In the light-diffusing resin composition according to the present invention, when forming a light-diffusing molded article, there is no visually discriminable size as much as possible, and it is preferable that foreign matter having a size of 50 μm or more is not present as much as possible. The content of such foreign matter is desirably 5 / 10 g or less, preferably 3 / 10 g or less, more preferably 0 / 1 〇 g. The content of the foreign matter can be measured by dissolving the resin composition in a resin-soluble solvent such as toluene or cyclohexane, filtering it with a filter, and measuring the size and number thereof by a microscope. Further, the cyclic olefin resin may be dissolved in the solvent and filtered through a filter, and then counted using a commercially available microparticle counter based on the principle of light scattering. In addition, the light-diffusing resin composition of the present invention is preferably stored in a conventional manner by a conventional method before the forming process described later is carried out by using a conventional method. When the light-diffusing resin composition is in the form of a solid such as particles or granules, it can be dried by a known method. The drying device can be a conventional drying device such as a hot air dryer, a dehumidifying dryer, a nitrogen circulating dryer, a dehumidifying nitrogen circulating dryer, or a vacuum dryer. In such a drying apparatus, from the viewpoint of easily obtaining a molded article having a uniformity of color tone, it is preferable to use a vacuum dryer or a dryer which circulates an inert gas such as nitrogen, and the drying temperature or drying time is not particularly The limitation is usually arbitrarily set within the range of Tg_l 〇〇 ° C to Tg -20 ° C, and the drying time is usually set in the range of 2 to 6 hours. [Molded product and light guide] (Molded product) The molded article according to the present invention can be produced by molding the light diffusing resin composition by a known method. The shape of the molded article is not particularly limited, but a flat plate shape is preferable from the viewpoint of sufficiently exhibiting optical characteristics, and a wedge shape having a uniform thickness and a continuously varying thickness can be appropriately set depending on the application, and Patterns, etc. The thickness of the flat molded article is usually 0.2 mm to 5.0 mm, preferably 0.8 mm to 2.2 mm, and the size is not particularly limited, and the size of a conventional liquid crystal display device, a penetrating screen, or the like can be arbitrarily used. For example, 1 inch to 40 inches can be used in a wide range. Further, on the surface of the above-mentioned molded article, a conventionally-formed type of the prism, the groove, the texture, and the like, which are intended to prevent reflection, condensing, and efficiency of incident light, can be formed, and the like, and the like. These patterns can be obtained by a method of transferring the film during forming, a method of thermally transferring by hot stamping after molding, a method of cutting the surface after molding, or a surface of the molded article by heat hardening or ultraviolet curable resin. It is formed by a conventional method such as a printing method. Such a molded article is suitable for use as an optical component excellent in brightness and light balance performance and color tone uniformity. It is particularly suitable for use in edge-lit backlights for liquid crystal displays. Even when a light source such as an LED is used, the light guide body can produce a backlight that does not cause local unevenness in brightness due to generation of bright lines in the vicinity of the light source, and has excellent brightness balance in the plane. The molding method of the above-mentioned molded article is not particularly limited, but it is preferably an injection molding method or an extrusion molding method. (1) Injection molding: The injection molding machine used for injection molding is not particularly limited, and examples thereof include a parallel method of a cylinder type, a pre-molding method, a hydraulic type of a driving method, an electric type, a hybrid type, and a mold clamping method. Straight pressure type, toggle type; horizontal and vertical directions of injection direction. In addition, the mold clamping method can also be used for the output injection compression. The cylinder diameter and the clamping force are determined according to the shape of the target molded article, but generally, the larger the projected area of the molded article, the larger the clamping force, and the larger the capacity of the molded product, the better the cylinder diameter is selected. When the cylinder is a parallel type, the compression ratio, the ratio of the length to the diameter, and the shape of the screw such as a subflight can be appropriately selected, and the surface of the screw can be applied with a chromium-based, titanium-based, nitride-based, or carbon-based system. Coating. In addition, it is also possible to provide a mechanism for rotating the screw of the stability of the metering or injection operation -35-200825135 or pressure control. Further, it is preferable to decompress the inside of the cylinder or the hopper in which the resin composition is stored, and to seal the cylinder and the hopper in an inert gas such as nitrogen, from the viewpoint of stably obtaining a molded article. The molded article of the present invention can be produced by using a mold having a conventional material or a knot. The preferred material of the cookware may be a general carbon steel, stainless steel, or a conventional alloy based on the temple, or may be subjected to a treatment of a smelting surface by means of chrome, titanium, diamond, or the like. The known coating treatment or metal plating for pattern processing such as nickel-based metal or copper alloy. In addition, when a pattern is formed on the surface of a molded article for the purpose of condensing or anti-reflection, a metal coated surface, a metal plating surface, or a stamper surface of the mold may be known by using an electric discharge machine or a cutting machine. The processing machine forms a direct pattern, or may be formed by electroforming or the like. In order to reduce the warpage or stability of the molded article during injection molding, it is preferable to use a method of appropriately reducing the pressure of the cavity or an injection compression method. When the inside of the cavity is reduced in pressure and then injection molded, the degree of pressure reduction is preferably -0.08 MPa or less, more preferably -0.09 MPa or less, and particularly preferably -0.1 MPa or less in terms of gauge pressure. When the degree of pressure reduction exceeding the above range is insufficient, the molded article having excellent light transmittance and light diffusibility cannot be obtained because the degree of pressure reduction is insufficient. The degree of pressure reduction in the above range can be achieved by a conventional method, for example, by using a vacuum pump, and it is preferable to use a conventional sealing material such as a 〇-ring around the cavity or the ejector mechanism. The impurities may be mixed into the molded article or the like, and a grease for vacuum or the like may be used. Further, the suction port of the pressure reducing device for connecting a vacuum pump or the like may be disposed anywhere in the mold, but is usually disposed at the end of the injector mechanism portion, the injection port, and the flow path, -36-200825135 Casing structure Department and so on. Moreover, the vacuum suction sequence can be controlled by a solenoid valve or the like in conjunction with the switch of the mold, and can be operated frequently, as long as it is a method capable of achieving a desired degree of decompression in the cavity when the molten resin is filled, and there is no particular limit. When the inside of the cavity is depressurized and injection-molded, the injection delay time is usually set in order to eject the molten resin in a state where the closed cavity is depressurized. Although the delay time of the injection is related to the capacity of the vacuum pump used and the cavity size, the hanging is about 0.5 to 3 seconds. On the other hand, in the injection compression molding, the cavity interval can be set to 1.5 to 20 times the thickness of the molded article, and the molten resin is injected between the gaps while maintaining the pressure of the resin measured on the cylinder side at 200~. In the range of 2,000 kgf/cm2, the method of reducing the interval between the cavities while compressing the molded surface in the mold. Further, the core of the mold may be set to be 1 to 1 times to 10 times the thickness of the molded article, and the molten resin may be emitted therein, and the average speed of the movable side core may be set from the start of the injection or the end of the injection. 0.01 mm/sec to 1 mm/sec for compression. These injection compression methods can be carried out using a conventional molding machine. The other conditions for injection molding are not particularly limited, but usually the cylinder temperature is 260 ° C to 3 50 ° C, and the mold temperature is based on the glass transition temperature Tg of the cyclic olefin resin, usually Tg - 1 ° C ~ Tg - 40 ° C, preferably in the range of Tg - 〜 -2 5 °C. Further, the injection speed differs depending on the size of the molded article of the present invention or the cylinder size of the molding machine. However, for example, when the cylinder diameter is 28 mm, it is usually 80 mm/sec or more, preferably 90 to 250 mm/sec. 200825135 speed. The pressure holding system can maintain the shape of the molded article appropriately: It is preferable to apply it after time. (2) Extrusion: The method of extruding the molded article of the present invention may be as follows: after the light diffusing resin composition is melted in a press, the metering thereof is passed through a die having a slit-like outlet. a resin composition which is extruded into a sheet shape or a film shape, by a mirror or a surface of a shape or the like (hereinafter collectively referred to as "roller or the like"), in a sheet or a film (hereinafter collectively referred to as a "thin transfer mirror or The specific pattern shape is such that the sheet cutting machine is cut, wound by a winder, and obtained by a standard size, etc. The preferred extruder used for extrusion molding may be a ratio of diameter (D) (L). /D) is 28 or more and 40 or less, and is determined by a screw. However, the range of the extruder is usually 30 mm to 125 mm, and a suitable residence time can be obtained, and the resin composition can be sufficiently obtained. Further, the screw diameter is less than 30 mm. In addition, it is less than 125 mm, and the raw material is liable to be retained and is inferior. In order to obtain the film thickness stability of a sheet, etc., the gear pump can use a conventional product, but in particular, a resin is used. The external type of the method is preferred. The resin composition of the present invention is stretched to a minimum degree of filminess, and is cooled by a general extrusion gear pump, and is cooled by a watch or the like, or a patterned die or the like. The length (L) and the rod diameter of the specified size are used. L/D is located on the upper part of the invention. The amount of the invention is unstable, and since the gear pump is also preferably used for lubrication, the -38-200825135 T die is preferably used. Head, fishtail die, etc., hanger type die is particularly good. The shape of the branch pipe is not particularly limited, and it is preferable to stay small. Further, the tip end of the boring die is preferably an acute-angled edge, and when the edge is damaged, it is less preferable because it is a die line. In particular, the edge treatment of an ultra-hard coating such as tungsten-carbide by means of flame spraying or the like is excellent for preventing the die line. When transferring from the boring die to the roller or the like, it is preferable to transfer the boring die to the roller or the like as much as possible, and the distance is preferably 50 mm or less. When a smooth roll or the like is produced for the transfer of the roller or the like, it is preferably honed into a mirror shape, and the surface honed state is preferably 0. 1 μm (0.1 s) or less in terms of surface roughness. When the maximum thickness is more than the above range, the thickness of the surface of the roller or the like is transferred to the surface of the sheet or the like, which is disadvantageous in appearance of the sheet or the like. The material such as the roller to be used is preferably iron, stainless steel, iron plated with hard chrome plating, or the like. Further, in order to improve the release property, iron or stainless steel is treated by flame spraying or the like using a metal oxide such as alumina or chromium oxide or a superhard metal such as tungsten or tungsten carbide. Further, the present invention can also form a three-dimensional pattern on a roller or the like, and transfer the stereoscopic pattern to at least one side of a sheet or the like. The stereoscopic shape is not particularly limited, and examples thereof include a prism shape, a semicircular shape, a rounded shape, a rectangular shape, a V-shaped groove or an angular shape, a hemispherical shape, a semi-circular shape, a conical shape, and a polygonal pyramid shape. A convex or concave shape such as a conical ladder shape or a polygonal pyramid shape, an irregular convex and concave shape, a lattice shape, a bifurcated groove shape, and any other pattern shape. These functions are not particularly limited to -39- 200825135, but it is better to use optical functions that impart concentration, scattering, diffraction, and polarization. The method of forming a three-dimensional pattern on a roller or the like is not particularly limited, and a conventional method can be used. For example, a method of cutting, a method of electrical discharge machining, a process by laser, a method of electroforming, a method of engraving, a method of printing a curable resin, a method of sandblasting, and the like can be mentioned. The above-mentioned three-dimensional pattern can be formed by directly processing a substrate such as a roller, or a substrate such as a roller can be plated with a metal such as nickel or copper or a compound thereof to further coat a photocurable or thermosetting organic compound. After the compound, this is processed. Further, a press plate can be produced and laminated with a metal endless belt or a metal roller as a composite layer. When the obtained sheet or the like is peeled off from a roller or the like, the film is pulled down while controlling the peeling force with a tensiometer or the like. The peeling force is so small that the film is not bent or broken. For the specific transfer method, the roller is used on one side, and the air knife method such as the roller is pressed against the surface on the opposite side of the roller by air pressure such as air or nitrogen; and electrostatic gas or the like is applied, and electrical force is used. A method of attaching a sheet or the like to a roller or the like; a method of mechanically contacting the rolling wheel, or the like. In such a transfer method, it is preferable from the viewpoint of preventing the risk of occurrence of wrinkles or the like by preventing air from entering between the roller and the sheet by the method of rolling the wheel. (Light Guide) As described above, the molded article of the present invention is suitable as a light guide used for a light source device such as a backlight or a front light of a liquid crystal display device, and is particularly suitable as a light guide for a side-40-200825135 light type backlight. In the molded article of the present invention, for example, when a light source is used to input light from an end surface using a point light source such as an LED, local brightness variation due to generation of a bright line in the vicinity of the light source does not occur, and in-plane brightness balance is good. A light source device of a liquid crystal display device, such as a backlight. In addition, the light guide of the present invention may be laminated with a conventional film for the purpose of brightness enhancement or brightness uniformity, and may also be implemented on the surface of the light guide to prevent reflection and antistatic. Wet or dry coating for the purpose of anti-scratch, etc. [Embodiment] [Examples] Hereinafter, the present invention will be described by way of examples, but the invention is not limited to the invention of the examples. In addition, the following "parts" and "%" are "parts by weight" and "% by weight" unless otherwise specified. Further, various physical properties were measured by the following methods. ^ (Intrinsic viscosity: riinh) Chloroform was used as a solvent to prepare a sample having a polymer concentration of 〇·5 g/dl, which was measured at 30 ° C using an Ubbelohde viscometer. (Molecular weight) Using HLC-8020 gel permeation chromatography manufactured by Tosoh Corporation (GPC, column: TSKgel G7000HXLxl, TSKgel GMHXL) manufactured by Tosoh Corporation &lt;2 and 4 straight 歹 ij of TSKgel G20〇〇HXLxl, using tetrahydro-41 - 200825135 weight average Μη to represent the measurement of polyfuran (THF) solvent, calculate the polystyrene-converted amount (Mw) and molecular weight Distribution (Mw/Mn). Further, the number average molecular weight in terms of styrene. (Glass transition temperature: Tg) Measured at a temperature increase rate using a DSC 6200 manufactured by Seiko Instruments Co., Ltd. at 20 ° C /min under a nitrogen stream. (refractive index) in the case of a cyclic olefin resin: a plate (minute annealing, one week later, Jena Corporation, 40 mm x 60 mm x 3.2 mm by injection molding), and (Tg + 5) 〇C Then, the refractive index of the d-line was measured using a refractometer (Carl Zeis® PR-2) under conditions of 25 ° C and 50 RH % in an environment of 25 ° C and 50 RH %. When cross-linking particles: The spectroscopy is dropped into the observation microscope microscopic observation rate, and the cross-linked particles are filtered with a gold mesh of 60 mesh, and mixed with a filter solution standard solution (manufactured by Cargille), and the particles are invisible by light. The contour of the standard liquid of the d-line is the refractive index of the cross-linked particles. The measurement system was implemented at 25 t. (Particle size distribution becomes extremely large particle size) Using a particle size distribution measuring device (Nikkiso Co., Ltd. -42 - 200825135

MicrotracUAPlSO) measures the particle size distribution by light scattering. The particle size obtained in the obtained particle size distribution curve became extremely large. (Average particle diameter) Particle size distribution measuring apparatus (Microtrac UAP150, manufactured by Nikkiso Co., Ltd.) The particle size distribution was measured by a light scattering method. The obtained particle size distribution was plotted on a logarithmicity-determining paper, and a particle diameter of 50% was accumulated on a volume basis as an average particle diameter. (Colity ratio) The void ratio was calculated by observing the cross section of the particles with a scanning electron microscope and processing the image. (A) In the case of hollow particles formed of a single cavity, the outer diameter of the particles is set to d 1, and the outer diameter of the hollow portion is set to d 2 , and the void ratio is calculated by the following formula. Cavity ratio = (d2/dl) 3χ1〇〇(Β) is a hollow particle formed by a plurality of voids. The image of the cross section of the particle is analyzed, and the area A occupied by the hollow portion is calculated, and the complex equation is calculated by the following equation. The corresponding particle size d3 when the hole is treated as a single cavity. -43- 200825135 d3 = ( 4 Α / π ) 1/2 The void ratio is calculated from the corresponding particle diameter d3 and the outer diameter d 1 by the following formula. Cavitation ratio = (d3/dl) 3χ100 &lt;Synthesis of cyclic olefin resin&gt; [Synthesis Example 1] 8-methyl-8-methoxycarbonyltetracyclohexane as a cyclic olefin [4·4·0 12 parts of 12'5·17'1()]-3-dodecene, and 4 parts of 1-hexene as a molecular weight modifier, and 75 parts of toluene as a solvent for ring-opening polymerization reaction, The reaction vessel was replaced with nitrogen and the solution was heated to 60 °C. Next, in the solution in the reaction vessel, 0.62 parts of a toluene solution of triethylaluminum (concentration of 1 ·5 mol/L) and tungsten hexachloride modified with t-butanol/methanol (t-butyl) were added. Alcohol: methanol: tungsten = 0.35 mol: 0.3 mol: 1 mol) toluene solution (concentration 〇 〇 5 mol / L) 3.7 parts, by heating the solution at 80 ° C for 3 hours, so that The ring-opening polymerization reaction gives a solution containing a ring-opening polymer. The polymerization conversion ratio in this polymerization reaction was 9 7%. 4,000 parts of the ring-opening polymer solution obtained in this way was placed in an autoclave, and 0.48 parts of RuHCl(CO) [P(C6H5)3]3 was added to the ring-opening polymer solution by a pressure of 100 kg under hydrogen. /cm2, the reaction temperature was 165 ° C, and the mixture was heated and stirred for 3 hours to cause hydrogenation. After the obtained reaction solution (solution containing a hydrogenated polymer) was cooled, the hydrogen gas was released at -44 to 200825135. Next, this reaction solution was poured into a large amount of methanol, and the hydrogenated polymer was solidified and recovered. Then, the recovered hydrogenated polymer was dissolved in toluene to prepare a solution having a concentration of 20%, and the mixture was filtered through a filter having a pore size of Ιμπι, and then injected into a large amount of methanol to solidify and recover the hydrogenated polymer. This redissolution/precipitation/recovery operation was repeated three times, and the finally obtained hydrogenated polymer was subjected to 10 ° drying under reduced pressure for 12 hours, and then granulated by a melt extruder to prepare pellets. The hydrogenation ratio of the obtained hydrogenated polymer (hereinafter also referred to as "cyclic olefin resin A1") was substantially 100% as a result of 1H-NMR measurement under conditions of 400 MHz.

Further, the refractive index of the cyclic olefin resin A 1 at 28 ° C is 1.51, riinh is 0.52 'Mw is 7 5, 00, M w/Mn is 3 · 5, and Tg is 1 64 ° C. ^ [Synthesis Example 2] In addition to the use of 8-methyl-8-methoxy mineral-based tetracycline [4·4·0·12'5.17'1()]-3-dodecene as a cyclic olefin A hydrogenated polymer was obtained in the same manner as in Synthesis Example 1 except that 225 parts of a bicyclo[2.2.1]hept-2-ene was used in the form of a mixture of 4 parts of 1-hexene as a molecular weight modifier. The hydrogenation ratio of the obtained hydrogenated polymer (hereinafter referred to as "cyclic olefin resin ruthenium 2") was substantially 100%. The refractive index of the cyclic olefin resin ruthenium 2 at 28 ° C was ηιη1 i -45 - 200825135 0.50, Mw was 62,000, Mw / Mn was 3·5, and Tg was 141 °C. [Synthesis Example 3] As a ring-opening polymerization, 250 parts of 8 ethylene tetracyclo[4·4·0·12'5·17'1()]-3·dodecene was used as a cyclic olefin. A hydrogenated polymer was obtained in the same manner as in Synthesis Example 1, except that the solvent for the reaction was 750 parts of cyclohexane. The hydrogenation ratio of the obtained hydrogenated polymer (hereinafter referred to as "cyclic olefin resin A3") was substantially 1% by mole. The cyclic olefin resin A3 had a refractive index of 1.52 at 28 ° C, a iiinh of 0·50, a Mw of 65,000, a Mw/Mn of 3.0, and a Tg of 145 °C. &lt;Preparation of Crosslinked Particles&gt; [Preparation Example 1] 98 parts of styrene, 2 parts of methacrylic acid, 10 parts of t-dodecylmercaptan, and 0.05 parts of sodium dodecylbenzenesulfonate, 0.4 parts of potassium peroxide and 200 parts of water were placed in a 2-liter flask, and the mixture was heated to 70 ° C under nitrogen for 6 hours while stirring. Thus, seed polymer particles having a polymerization yield of 98% and an average particle diameter of 0.31 μm were obtained. Next, 3 parts of the obtained seed polymer particles, 1 part of polyvinyl alcohol, 5 parts of hydroquinone, 5 parts of water, 1 part of benzoyl peroxide, and diethyl benzene (purity of 55%) 50 parts and 5 parts of cyclohexanol were placed in a reactor and stirred for 30 minutes, and then heated to 70 ° C for 4 hours to obtain crosslinked particles. Then, a 1% aqueous solution of aluminum sulfate was added to the dispersion of the crosslinked particles, followed by filtration, followed by thorough washing with water to remove cyclohexanol, followed by drying under reduced pressure to obtain crosslinked particles B2-1 in the form of powder -46-200825135. The particle size distribution of this crosslinked particle B2_1 was plotted on a log-normal rate paper to confirm that it was a log-normal distribution. The average particle diameter (the cumulative enthalpy of the frequency in terms of volume basis shows 50% of the particle diameter) is 3·3 μπι, the geometric standard deviation is 1 · 2, and the hollow particle having a void ratio of 48%. Further, this cross-linking: The particle Β2-1 had a refractive index of 1.59 at 25 °C. φ φ [Preparation Example 2] Powder-like crosslinked particles B2_2 were obtained in the same manner as in Preparation Example 1 except that the amount of the polymer particles added was changed to 7 parts. The particle size distribution of this crosslinked particle B2-2 was plotted on a lognormal normal rate paper, and it was confirmed that it was a lognormal distribution. The average particle diameter (the cumulative enthalpy of the frequency on a volume basis shows 50% of the particle diameter) was 0.8 μm, the geometric standard deviation was 1.2, and the void ratio was 47%. Further, the crosslinked particle Β2-2 has a refractive index of 1.59 at 25 °C. [Preparation Example 3] The crosslinked particles B2-3 were obtained in the same manner as in Preparation Example 1 except that 5 parts of divinylbenzene and 45 parts of styrene were used instead of 50 parts of divinylbenzene. The particle size distribution of this crosslinked particle B2-3 was plotted on a logarithmic normal rate paper, and it was confirmed that it was a lognormal distribution. The average particle diameter (the cumulative 値 of the frequency on a volume basis shows 50% of the particle diameter) was 3.3 μπι, and the geometric standard deviation was 1.2, but the void was not recognized (void ratio 0%). Further, the crosslinked particle Β2-3 had a refractive index of 1.59 at 25 °C. -47-200825135 [Preparation Example 4] Crosslinking particles B2-4 were obtained in the same manner as in Preparation Example 2, except that 5 parts of divinylbenzene, 45 parts of styrene, and 50 parts of divinylbenzene were used instead. The particle size distribution of this crosslinked particle B2-4 was plotted on a logarithmic normal rate paper, and it was confirmed that the logarithmic normal distribution was followed. The average particle diameter (the cumulative enthalpy of the frequency on a volume basis shows 50% of the particle diameter) is 〇.8 μχη, and the geometric standard deviation is 1.2, but the void is not recognized (void ratio 〇%). Further, the crosslinked particle Β2-4 had a refractive index of 1.59 at 25 °C. [Crosslinked Particles B 1] The crosslinked particles B1-1 were obtained from particles of Rohm and Haas Co., Ltd. (trade name: PERLOID EXL-5136). The particle size distribution of this crosslinked particle Β1·1 was plotted on a lognormal normal rate paper, confirming that it follows a lognormal distribution. The average particle diameter (the cumulative enthalpy of the frequency on a volume basis shows 50% of the particle diameter) is 5.00 μm, the geometric standard deviation is 1.2, and the refractive index at 25 art is 1.46 ° [Examples 1 to 7, Comparative Examples 1 to 9] &lt;Production of Resin Composition&gt; The particles of the combination shown in Table 1 were mixed, and the particle size distribution of the particles after mixing was measured, and the particle diameter at which the frequency became extremely large was calculated. Next, the cyclic olefinic resin was previously dried under vacuum at 1 ° C for 4 hours. Then, the cyclic olefin resin and the pellet -48-200825135 were prepared by a drum type blender at a ratio shown in Table 1. A two-axis extruder (TEM-37BS, manufactured by Toshiba Machine Co., Ltd.) was heated to a temperature in the range of 290 ° C to 300 ° C to fill the hopper and the cylinder with nitrogen. After the temperature was stabilized, the screw was rotated at 100 rpm, and nitrogen was supplied to the hopper portion, and the preliminary mixture of the cyclic olefin resin and the crosslinked particles was supplied at a rate of 20 kg/hr, followed by melt-mixing to obtain a light diffusing resin. Composition. The obtained light-diffusing resin composition was vacuum dried at 1 〇 ° C for 4 hours, and then stored in an aluminum bag sealed with nitrogen. &lt;Injection molding 1&gt; Using a cavity (1) (two mirror plates of 80 mm x 60 mm and thickness imnl), an injection molding machine (SG75M-S manufactured by Sumitomo Heavy Industries Co., Ltd., a cylinder diameter of 28 mm, and a mold clamping of 75 tons) was used. Forming. The injection molding speed was set to 100 mm/sec, and the cylinder temperature was set to a temperature in the range of Tg + 140 ° C to Tg + 160 ° C of the resin, and the mold temperature was set to be in the range of Tg - 20 ° C to Tg - 1 ° ° C of the resin. The temperature of the injection molded product produced here is hereinafter referred to as a "molded body". &lt;Injection molding 2&gt; In addition to the use of 60 mm x 40 mm and a thickness of 0.8 mm, the one side is a mirror surface, and the other side has a pattern (2) having a pitch of 2 50 μm and a depth of 10 μm, instead of the mold Except for the hole (1), the rest is injection molded in the same manner as the above-described injection molding 1. Hereinafter, the injection-molded article produced here is referred to as "-49-200825135 light guide". The obtained molded body and light guide were evaluated by the following method (total light transmittance and haze). About the molded body, Murakami color technique was used: rate meter HM-150, total light transmittance Measured according to JIS K736 1 -1 ' JIS K7136. (Wavelength dependence of light transmittance) With respect to the molded body, a light transmittance was measured by a spectrophotometer (Hitachi 3 3 1 0). The wavelength dependence of the light transmittance is estimated by the light transmittance of 400 nm by the light transmittance at a wavelength of 700 nm. This recovery is close to 1. 〇〇, the wavelength dependence of the transmittance is lower.波长 The wavelength dependence of the light transmittance = (light gamma of 40 〇 nm, light transmittance of 700 nm) Furnace (light line due to the light source) The light-incident surface of the light guide is arranged in a 3 room side by side at 8 mm intervals ( Nissan Chemical NSSW008B) is incorporated into the light guide body: 2.8mm is covered with a light-impermeable film, so that the light-emitting surface of the light guide body in which the light is observed in this state is evaluated by the reference of the light source. It is best to evaluate A here. Haze, penetration, haze according to the ratio of U-' calculated wavelength, the evaluation shows the light penetration rate / (I LED light source into the light surface to. With the visual bright line, according to the next -50 200825135 A no bright line was observed. B observed a weak bright line. C observed a clear bright line. (Hue uniformity) &quot; Light-integrating surface of the light guide body with 3 LED light sources side by side at 8 mm pitch' (Nissan Chemical NSSW008B) Light is incident on the light guide body, and it is covered with a light-impermeable film from the light-incident surface to H 2·8mm, and the light-emitting surface is equalized in a rectangular area of 7 The chromaticity x, y of the total 49 region is measured by a color difference meter (LC-100, manufactured by KONICA MINOLTA), and the yellowness YI is calculated from the obtained chromaticity x, y, and the obtained YI at 49 is calculated. The standard deviation, by which the hue uniformity is evaluated, shows that the smaller the standard deviation is, the more uniform the hue of the illuminating surface is. (Brightness uniformity) # The light incident surface of the light guide is used to arrange 3 LED light sources side by side at 8 mm intervals. (Nissan Chemical NSSW008B) enters the light guide, from the light entrance surface to w 2.8mm without light The transparent film is covered to emit light. The brightness [L ( 20 )] from the end to 20 mm and the brightness [L ( 50) from the end to 50 mm are measured along the center line of the incident surface. The ratio of these brightnesses is = L ( 50 ) / L ( 20 ). The closer to 1, the light decays inside the light guide and the brightness in the light-emitting surface is more uniform. The results are shown in Table 1. -51 - 200825135

I嗽tf 〇&gt; 3 B1»1 20000 5.0 0,05 Β2-1 20000 3,3 0.08 tob to CO 00 89.7 0.75 &lt; 60.0 g 〇GO 3 1 1 1 1 Β2-4 150 0.8 0/07 CO Oo CO o 04 〇&gt; CO V— 0.88 &lt;σ&gt; LO 0.32 7 〇§ a η d 卜 I 1 f 1 V g «&gt; S a - 〇CO ΌΟ c6 o CV| 〇&gt; CM f— 0.89 -&lt; OO iri 0.36 τ s - § s ^ ο* CO B1-1 300 5.0 0. 05 III} o in CM cn 卜 lo CO σ&gt; o ο CO CO Factory S]S&gt; 3 III) Β2-4 300 0.8 0.08 oo o CM G) oo 〇· T~ CNJ 〇〇oc CM 〇兮3 lilt Β2-3 300 3·3 0.08 CO CO CNJ σ&gt;a&gt;a&gt; o CD ir&gt; One 〇c〇S fill Β2 -2 300 0.8 0·08 CO o CM a&gt; o csi CsJ OO o &lt; O c*yc=&gt; CM 3 1 1 1 1 ΒΖ-1 300 3.3 0.08 CO CO CM CT> 10.7 σ&gt;〇&gt; 〇 CO CO s ο W 3 till ! 1 1 f 1 CN| a&gt; CM 〇〇&gt;C5&gt; 〇◦ Csi spoon: ρ; ο Example - - - - - - .1 P - 3 oooog * L〇 σ CQ , 10 O· Β 2_4 150 0.8 0.08 O CO to o CNI σ&gt; OO xr &lt;〇〇&gt;〇-&lt; LO CO ο CO 3 BH 150 5.0 0.05 Β2,3 150 3.3 0. 08 Lb Lf&gt; CO CV| σ&gt; 卜0.96 &lt;co &lt;〇ο tr&gt; s B1-1 150 5·0 0.05 Β2-1 150 3.3 0.08 o ΙΛ CO CVI σ&gt; OO O 〇&gt; CO CO c&gt; inch s B1 -1 200 5.0 0.05 Β2 - 2 100 0.8 0.08 O OO ixi o CM a&gt; o &lt;co Ρ: ο CO 3 BH 150 5.0 0,06 Β2-2 150 0.8 0.07 O CO L«· 6 - LO Si o &lt;c CO S ο CNJ 3 Β2-2 150 0.8 0.08 o oo ix&gt; o cv| σ&gt; CO so &lt; ο 5 B1-1 150 5.0 0.05 Β2_2 150 0,8 0.08 O OO LO O CM a&gt; so &lt;c ο ο Cyclic olefin resin (A) e | ^ a ® &quot;&lt;β _趑? 1 1 — a Β ϋ ^ © _鍅1 From Kh — S1 Ammonium s un# # in in U m ^ Total light transmittance (%) Wavelength dependence of haze light transmittance: presence or absence of bright lines • Color tone uniformity, brightness uniformity-52-200825135 The molded body and the light guide of Examples 1 to 7 were compared with the molded body and the light guide of Example 1, and it was found that light penetration, color tone uniformity, and brightness uniformity were The same, but the bright line of the source is more excellent. Further, in the molded articles of Examples 1 to 7 and Comparative Examples 2 and 4 in which the particles having a light guiding particle diameter of 3.3 μm were formed, the luminance uniformity was observed in terms of wavelength dependence and color of light transmittance. Excellent, but more complete line of brightness. Further, compared with the molded body and the light guide body which only contain the average particle diameters of 0.8 μm 3 and 5, it is found that the light line, the color tone uniformity, and the brightness uniformity are excellent because they are equivalent to the bright line of the light source. . Further, the molded article of Comparative Example 6 having a particle diameter of 6. Ομπι is known to have the same wavelength dependence and uniform color tone as the light transmittance, but is more excellent in eliminating the cause of light source. Further, in the examples 1 to 7, the average particle diameter of the molded article and the light guide species was less than 4. 比较μπι of the particles of Comparative Example 7 The light guide was found to be capable of sufficiently eliminating the cause of light, but the light transmittance was It has excellent wavelength dependence and uniformity of color tone. Further, in Examples 1 to 7 and Comparative Example 9, the average particle diameter was less than 4. When the particles of Ομπι and the average particle diameter were sub-mass, when the addition amount was significantly increased (compared with the wavelength of the comparison ratio of the particles) The dependence can be eliminated from the light body, and the comparative example in which the uniformity of the average shape and the light guide is equal to the uniformity of the light source is sufficient to eliminate the wavelength dependence of the onset and only the average particle guide. Compared with the light body, the uniformity and the high uniformity of the ridge line, and the uniformity and brightness of the bright line containing only the 2 and 8 shaped bodies and the source, it is known that even if the combination is more than 4·0μιη Example 9), although -45-200825135 can eliminate the bright line caused by the light source, the wavelength dependence of the light transmittance, the uniformity of the hue, and the uniformity of the brightness are lowered. As described above, by combining two kinds of particles having an average particle diameter in a specific range, the light transmittance does not decrease with wavelength, or the uniformity of hue or brightness is lowered without light scattering by the particles. In this case, the bright line caused by the light source can be sufficiently eliminated. [Industrial Applicability] The molded article produced by the light-diffusing resin composition of the present invention is suitable as an edge-light type light guide for a liquid crystal display device. -54-

Claims (1)

200825135 X. Patent application scope i A light diffusing resin composition characterized by containing a cyclic olefinic resin (A) and particles (b), and a total of 10% by weight of the particles (B) The content ratio is 10 〜 〇, 000 ppm on a weight basis. The particle (B) is in a volume-based particle size distribution, and each of the regions having a particle diameter lower than ξ and at least one region of 4·〇μπι or more Great ^ 値. The light-diffusing resin composition of the first aspect of the invention, wherein the particles (Β) are mixed with a volume-based average particle diameter of 4.0 μm or more (Β1) and an average particle diameter is lower than It is obtained by using 4·0μιη particles (Β2). 3. The light diffusing resin composition of claim 2, wherein in the volume-based particle size distribution of the particle (Β 1 ), the geometric standard deviation of the peak whose peak area is the largest is represented by a lognormal distribution ogB1 is 1·〇 or more and 2.0 or less. In the particle size § distribution of the volume (B2) of the particle (B2), the peak with the largest peak area is represented by a lognormal distribution, and its geometric standard deviation 〇gB2 is 1. 〇 above 2.0 the following. The light diffusing resin composition of the second aspect of the invention, wherein the absolute value of the difference between the refractive index nA of the cyclic olefin resin (A) and the refractive index nB1 of the particle (B1) is 値|nB1_nA| In the case of 〇4 or more, the absolute 値|nB2-nA| of the difference between the refractive index na of the cyclic olefin-based resin (A) and the refractive index HB2 of the particles (B 2 ) is 0.04 or more. 5. The light diffusing resin composition of claim 1, wherein at least a portion of the particles (B) is a hollow particle. The light diffusing resin composition of claim 1, wherein at least a part of the particles (B) is an organic crosslinked particle. A molded article obtained by injection molding a light-diffusing resin composition according to any one of claims 1 to 6. In the light-emitting type light-receiving resin composition of any one of the first to sixth aspects of the invention, the light-diffusing resin composition of any one of the first to sixth aspects of the invention is produced by injection molding. -56- 200825135 Refers to the table: the case of the book, the table, '//--N, one or two, c C seven For the generation of the picture, the element is unclear. Single No. 8. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: None -3-