200904887 九、發明說明： 【發明所屬之技術領域】 本發明係與背光模組有關，詳而言之，尤指一種背光 板組中之導光_甲基丙烯咖旨系樹脂組成物者。 【先前技術】 透明熱可雜樹脂之中，以甲基丙職_樹脂的光 穿透性優，具機械強度紐，以往使祕多數賴明用途。 又最近亦使用棚对置等的背賴朗導統。特別是 近年來顯稀置的高輝度、大·、_⑽顏要求下， '更月’U更大更薄的商品概念，繼續開發發光裳置， 其t，對於導光板之輝度有更高的要求。—般而言，為得 =輝度導光板’於親投人導光板至射出導光板時，廣 光板内之光損失，為因應此要求，導光板儘 了此減低射的雜f或其他添加劑之添加，但僅是如此， 仍無法滿足導歧對於高輝度之要求。 、伞別無機之舰舰粒子多祕光擴散板之用 途，例如日本特開平9-義，雖然可以得到均勻 Γ 旦會造成光穿透率減低，輝度亦會下降。但= 板之輝度。通板雖， 輝度無法核提高的_。 輯度不均-， 【發明内容】 本發明為解決上述购人研究之結果，可獲得高輝 200904887 度且輝度均-之導光板。本發明之導光板用甲基丙稀酸醋 系樹脂組成物包含甲基丙烯酸酯系樹脂(A)、無機微粒(B) 及滑劑(c);其中，該無機微粒子(B)含量為佔甲基丙烯酸 酉曰系樹脂（A)之0·〇5〜20 ppm，該滑劑（〇熔點為4〇〜85 c，含量為佔曱基丙烯酸酯系樹脂以彡之5〇〜3〇〇〇 ppm，且 該甲基丙烯酸酯系樹脂（A)含有重量平均分子量2〇〇〇〜 20000之低分子量聚合物2〜8重量％，藉由上述之組成搭 配，可得到高輝度且輝度均—之導光板用甲基丙稀酸醋系 樹脂組成物。 本發明之曱基丙烯酸酯系樹脂係由曱基丙烯酸酯 系單體為主成伤聚合而得，較佳為具有甲基丙烯酸曱酉旨 〜100重量％與可共聚合單體〇〜30重量％，更佳為具有甲 基丙烯酸曱酯90〜1〇〇重量％與可共聚合單體〇〜1〇重量％ 進行共聚合而得到。可共聚合單體例如：曱基丙烯酸乙酯、 甲基丙烯酸丙酯、曱基丙稀酸丁酯、甲基丙浠酸環己酯、 甲基丙烯酸2-乙基己酯、甲基丙烯酸三環癸酯、甲基丙烯 酸苯醋、曱基丙烯酸笨曱酯等之甲基丙烯酸酯類、丙稀酸 甲酉旨、丙烯酸乙醋、丙烯酸丙醋、丙烯酸丁I旨、丙婦酸環 己酯、丙烯酸2-乙基己酯、丙烯酸三環癸酯、丙烯酸苯醋、 丙烯酸苯曱酯等之丙烯酸酯類、曱基丙烯酸、丙稀酸等之 不飽和酸類、馬來酸酐、馬來醯亞胺及苯乙烯等，但不限 於此等。前述可共聚合單體以曱基丙烯酸乙酯、曱基丙稀 酸丙酯、曱基丙烯酸丁酯、丙烯酸曱酯、丙烯酸乙酿、丙 烯酸丙酯、丙烯酸丁酯等為較佳。又，此等之單體可單獨 使用，亦可混合2種或2種類以上而使用。 200904887 本發明所使用之無機微粒子（幻之具體例，例如：200904887 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module, and more particularly, to a light-guiding-method resin composition in a backlight panel. [Prior Art] Among the transparent heat-storable resins, the methyl propylene-resin has excellent light transmittance and mechanical strength, and has been used for many purposes. Recently, the use of sheds and other slanting guides has also been used. In particular, in recent years, the high-density, large-, and _(10)-yan requirements that have been seldom set, the concept of 'more moon' U is larger and thinner, and continues to develop luminous glaze, which has a higher brightness for the light guide plate. Claim. Generally speaking, in order to obtain the light guide plate from the light guide plate to the light guide plate, the light loss in the wide light plate is used to meet the requirements, and the light guide plate reduces the amount of impurities or other additives. Add, but only so, still can't meet the requirements of the guide for high brightness. The use of the umbrella of the inorganic ship and the multi-secret light diffusion plate, for example, the Japanese special Kaiping 9-yi, although it can be obtained evenly, the light transmittance will be reduced, and the brightness will also decrease. But = the brightness of the board. Although the plate can not be nuclearly improved. OVERVIEW OF SETTINGS - [Description of the Invention] In order to solve the above-mentioned research results, the present invention can obtain a light guide plate with a high luminance of 200904887 degrees and a uniform luminance. The methyl acrylate vine resin composition for a light guide plate of the present invention comprises a methacrylate resin (A), inorganic fine particles (B) and a slip agent (c); wherein the inorganic fine particles (B) content is The methacrylic acid lanthanum resin (A) is 0·〇5 to 20 ppm, and the slip agent (〇 melting point is 4〇~85 c, and the content is 5曱~3〇〇 of the thiol based resin. 〇ppm, and the methacrylate resin (A) contains 2 to 8 wt% of a low molecular weight polymer having a weight average molecular weight of 2 〇〇〇 to 20000, and by the above composition, high luminance and luminance can be obtained - The light-transmitting plate is made of a methyl acrylate-based resin composition. The mercapto acrylate-based resin of the present invention is obtained by polymerization of a mercapto acrylate-based monomer, preferably yttrium methacrylate. Preferably, 100% by weight of the copolymerizable monomer is 〇30% by weight, more preferably 90% by weight of methacrylate methacrylate and 可1% by weight of the copolymerizable monomer. Copolymerizable monomers such as ethyl methacrylate, propyl methacrylate, mercapto acrylate Esters, cyclohexyl methacrylate, 2-ethylhexyl methacrylate, tricyclodecyl methacrylate, phenyl methacrylate, acetoyl methacrylate, etc., methacrylate Dilute acid methyl ketone, acrylic vinegar, acrylic propylene vinegar, acrylic acid butyl methacrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, tricyclodecyl acrylate, phenyl acrylate, benzoyl acrylate, etc. An unsaturated acid such as acrylate, mercaptoacrylic acid or acrylic acid, maleic anhydride, maleic imine or styrene, etc., but is not limited thereto. The aforementioned copolymerizable monomer is ethyl methacrylate. Mercaptopropyl propyl acrylate, butyl methacrylate, decyl acrylate, acrylic acid acrylate, propyl acrylate, butyl acrylate, etc. are preferred. Further, these monomers may be used alone or in combination. It is used in two or more types. 200904887 Inorganic fine particles used in the present invention (a specific example of magic, for example:
BaS〇4、Ti〇2、Ah〇3、CaC〇3、％S〇4、％(0H)2 等為代表，但 不以此為限，其平均粒徑為請〜15卵，且以〇.12〜5// m者為佳’並且特別適合為〇. 15μ. 〇卵者。該微粒子之 平均粒徑係以粒子計數法測定之數目平均粒徑。 又，無機微粒子(B)之添加量為甲基丙烯酸酯系樹脂(a) 重量的0. 05〜2G ppm，以G.i〜15 ppm為較佳，Q. 3〜4 _ 為更佳。無機微粒子⑻之添加量不滿G ()5 _時無法提 昇導光板之輝度，超過2〇 ppm時，導光板之色相變差。 上述之微粒子具體例，其中，以Al2〇3折射率為1. γ 〜1· 8 ’ Τι〇2折射率為2. 3〜2. 6 ’對於提高導光板之輝度有 不錯之效果’特別是TiG2之效果最佳。唯單純地添加此種 無機微粒子於甲基丙烤酸醋系樹脂中，對於高輝度及輝度 均-度之效果不佳，因此，本發明為解決此問題，尚需配 合另外兩種條件’即，包含炫點40〜85°C之滑劑(C)含量為 甲基丙婦酸醋系樹脂(A)重量的5G〜獅，及曱基丙稀 ，旨系樹脂(A)含有重量平均分子量2〇〇〇〜2〇〇〇〇之低分子 量聚合物2〜8重量％，方能製得高輝度且輝度均一之導光 板用甲基丙烯酸酯系樹脂組成物。 、本發明所使用之滑劑(〇需為熔點40〜85〇c之滑劑，較 佳為45〜80 C，若炼點高於85°c，則無法得到高輝度且輝 度句之導光板，若炫點低於4〇°c，則經由押出、切割所 得到之顆粒狀樹脂中易有氣泡使得所製成之導光板之輝度 不佳。本發明所使用滑劑（C)之具體例如十八醇（stearyl alcohol)等之南級醇、硬脂酸(伽&咖&灿）等之高級脂 200904887 肪酉夂或單硬脂酸甘油g旨（glyceryl _^tearate)等之脂 肪^等。Μ述賴⑹之添加量為Y基丙雜I嫌脂(A) 重量的50〜3000 _，較佳為120〜2000 ppm，更佳為200 〜_ ppra，當湖⑹含量不滿5() _，則無法製成高輝 度且，度均一之導光板；若滑劑⑹含量超過誦聊，則 所製得之f基丙烯酸自旨系翻旨組成物之色相變差，亦無法 得到高輝度之導光板。 匕且，發明人研究發現，特定含量之甲基丙稀酸醋系樹 月曰（A)之低分子量聚合物存在，可製得本發明高輝度且輝度 均:之導光板’其作職構不甚财，但發明人等推測可 能係與有助於錢錄子之分散性有關，卩卩，#甲基丙稀 酸醋系樹脂(A)巾，重量平均奸量細〜2_Q之低分子 量聚合物含量不滿2重量％ ’職法製得高輝度之導光板； 當低分子量聚合物含量超過8重量％，則導光板之耐熱性不 佳；重量平均分子量_〜2_之低分子量聚合物含量 更佳為3 6. 5重量％，最佳為4〜6重量％。前述低分子量 聚合物係包含甲基丙職_樹脂為主成分聚合而得之聚 合物，較佳係相同於甲基丙烯酸酯系樹脂(A)之成分。 曰又，令無機微粒子(B)之含量為甲基丙烯酸酯系樹脂(A) 重量的之X (ppm) ’甲基丙烯酸酯系樹脂(]〇中，重量平均 分子量2000〜20000之低分子量聚合物含量為γ (重量％)， Χ/Υ:0. 03〜3. 〇 ’ 更佳為 〇. 05〜2· 〇。當 χ/γ 在 〇. 〇3〜3 〇 之範圍内，則所製成之導光板之高輝度更為理想。 本發明之甲基丙烯酸酯系樹脂(Α)之製造方法，可使用 懸濁聚合法、乳化聚合法、連續塊狀聚合法或連續溶液聚 200904887 合法等之任一種聚合方法製得。 本發明基於大量生產及操作便利性之觀點，較佳係使 用連續溶液聚合法，本發明之連續溶液聚合法係將原料單 體（例如甲基丙烯酸酯系單體等），與溶劑以及視需要而選 之♦合起始劑、分子量調節劑等連續地加入反應器中聚 合，聚合而得之聚合物，溶劑則連續地從反應器中取出， 經去揮發步驟而得甲基丙烯酸酯系樹脂。其所使用之溶劑 係具有較原料樹脂的單體（例如甲基丙烯酸曱酯單體及/或 可共糸合單體）還高的沸點，例如：甲苯、二甲苯、乙基 苯丄一乙基料之芳香族化合物、魏、舰等之脂肪族 化S物、萘燒等之脂環族化合物、醋酸丁自旨、醋酸戊醋等 曰類1,1,2,2-四乳乙燒等之驗化合物。其中以甲苯、 -甲苯、乙基笨具有適當的沸點，於脫氣時負荷少，又， =合物較無不良影響故為較佳之選擇。溶紐係依溶劑 旦。點而異’但依據聚合時之全混合物的重量，宜為重 置％以上，更佳為55重量％以上。 ㈤译丁文⑺心取令起始劑，係可在聚. j下^分解，並產生自由基之聚合紗劑。例如，: =:第^丁基、過氧化雙苯異丙基、過氧化甲基乙細 -第二丁基過酞酸醋、二第三丁基過笨 過乙甲酸酯、2,5-二甲基-25^〇^^#_ 弟一丁; 1 W & 5 一(過乳化第三丁基）己烷 丁基M3,3,5—三甲基)環己燒、u- 甲酿其 環⑽^氧化：第三戊基、過氧化」 ㈣基、氫過氧化異丙苯、過氧化月桂基、偶氮雙 -乙酸醋、1，Γ ~偶氮雙環己燒腈、2—苯基偶氮^二$ 200904887 基-4-曱氧基戊腈、2-氰2, 2-丙基偶氮甲酸、2, 2,-偶氮雙 異丁腈等。此等之聚合起始劑的使用量依據全反應單體混 合物的重量，較佳為〇.隨〜1重量％，更佳為 重量％。 ^ 本發明所錢之分子量調節齡要為硫_，例如： 正丁基硫醇、異丁基硫醇、正辛基硫醇、正十二碳燒基硫 醇、第三丁基硫醇、第二十二碳炫基硫醇、苯基硫醇、硫 甲醇、硫乙酸醋與其醋及乙二硫醇等。此等分子量調節劑 的使用量職全反應單航合物之重量，触為Q.隨〜 〇. 8重量％，更佳為〇· 01〜0. 35重量％。 时反應槽可使用附有雙螺旋或槳型攪拌葉之攪拌裝置。 使單體混合物溶液連續供給至反應槽，於7〇〜16(rc的溫度 下進行聚合反應，單體之轉化率在40〜90%。 X依前述聚合反應所得之聚合物溶液，經去揮發而取出 聚。物。去揮發農置可使用附有多段排氣孔之押出機或脫 揮么槽等。較佳係使聚合物溶液以預備加熱器等加熱至細 〜290°C的溫度’再以2GG〜27Gt，20〜⑽Torr在真空 y之脫揮發槽脫揮而得縣鮮基丙騎酯㈣脂⑷之 ，月曰，料’缝將甲基丙稀酸g旨系樹脂⑴之樹脂原料以溶 ，狀態送至押tB機’並添加錢錄子及賴，進一步經 換頌押出鎌物’再冷卻她而得顆粒狀之甲基丙稀酸醋 系樹脂組成物。 本發明除了添加無機微粒子及滑劑之外，亦可視需要 添加紫外線吸彳續、螢捕、抗氧化#j、可顏及顏料等。 利用本發明之甲基丙婦酸醋轉腊組成物製作為樹脂 10 200904887 板（導光板）時，基於大量生產及操作便利性之觀點，係以 押出成形法製造為較佳，即，前述所製得之甲基丙稀酸醋 系樹脂組成物於㈣助混合縣，從τ模頭押出，依序 通過經具有溫度調節之3〜5根拋雄之間喊形為平板 狀，使其成形板通過導引親之上而以拉引報一面拉引—面 冷卻、iHb，於橫寬方向與㈣方向切醜特定的長度， 俾可得到繼押出板之製品。另，可藉由調節拋光輕之間 隙與拉引速度而製造所要之厚度，一般導光板為2〜15麵 厚之樹脂押出板。 【平均輝度與輝度均齊度之測定方法】 、利用剷述押出製得樹脂板，其背面經由網點印刷後成 為‘光板，並將该導光板如第一圖所示狀態設置，其中， 將，導光板3之兩侧分別設置冷陰極燈管i，導光板尺寸為 19” ’導光板3之下方有-光反射板4，上方依序平行設 置上、下擴散膜5、及亮度增強膜(bef) 6，冷陰極燈管1 點亮之後於距離導光板上方5〇 cm處放iK〇nica版〇加 $司製的輝度計CS-1GGG ’設絲得81點之輝度並得到其 算數平均值’即為平均_(_)。又此81點之最小值與 最大值之比值即為輝度均齊度(％)。 【低分子量聚合物含量】 將所製成之曱基丙烯酸酯系樹脂組成物溶於四氫呋喃 (簡稱THF)中’再以凝膠透析方法（簡稱Gpc)採用聚苯乙烯 為分析標準，依以下的條件測定：BaS〇4, Ti〇2, Ah〇3, CaC〇3, %S〇4, %(0H)2, etc. are representative, but not limited thereto, the average particle size is ~15 eggs, and .12~5// m is better' and is especially suitable for 〇. 15μ. The average particle diameter of the fine particles is a number average particle diameter measured by a particle counting method. Further, the amount of the inorganic fine particles (B) is 0. 05~2G ppm, preferably G.i~15 ppm, and more preferably Q. 3~4 _. When the amount of inorganic fine particles (8) is less than G () 5 _, the brightness of the light guide plate cannot be increased. When the amount exceeds 2 〇 ppm, the hue of the light guide plate deteriorates. The specific example of the above-mentioned fine particles, wherein the refractive index of Al2〇3 is 1. γ 〜1· 8 ' Τι〇2 refractive index is 2. 3~2. 6 'has a good effect on improving the brightness of the light guide plate' TiG2 works best. Simply adding such inorganic fine particles to the methyl propylene vinegar-based resin has a poor effect on high luminance and luminance uniformity. Therefore, in order to solve this problem, the present invention needs to cooperate with the other two conditions. , containing a bright point 40~85 ° C slip agent (C) content of methyl acetoacetate resin (A) weight of 5G ~ lion, and mercapto propylene, the purpose of resin (A) containing weight average molecular weight Only 2 to 8 wt% of the low molecular weight polymer of 2 to 2 Å can produce a methacrylate resin composition for a light guide plate having high luminance and uniformity of luminance. The slip agent used in the present invention (requires a slip agent having a melting point of 40 to 85 〇c, preferably 45 to 80 C, and if the refining point is higher than 85 ° C, a light guide plate having a high luminance and a luminance sentence cannot be obtained. If the glare point is lower than 4 〇 ° C, the granule-like resin obtained by extrusion and cutting is likely to have bubbles, so that the brightness of the light guide plate produced is not good. Specific examples of the lubricant (C) used in the present invention are, for example. A fatty acid such as a southern alcohol such as stearyl alcohol, a stearic acid (Gale & Coffee & Can), a fat such as glyceryl glycerol, or a fat such as glyceryl _^tearate ^等. The addition amount of Μ 赖 (6) is Y-based propane I (a) weight 50~3000 _, preferably 120~2000 ppm, more preferably 200 _ ppra, when the lake (6) content is less than 5 () _, it is impossible to produce a high-intensity and uniform light guide plate; if the content of the slip agent (6) exceeds the boring, the obtained f-based acrylic acid has a poor hue from the composition of the composition, and cannot be obtained. High-intensity light guide plate. Moreover, the inventors have found that a specific content of a low molecular weight polymer of methyl acetoacetate (A) is present. The high-intensity and high-luminance of the present invention: the light guide plate's occupation is not very rich, but the inventors and other speculations may be related to the dispersibility of the money recording, 卩卩,#methacrylic acid vinegar Resin (A) towel, the average weight of the fine amount of ~ 2_Q low molecular weight polymer content less than 2% by weight 'the light method to produce a high-intensity light guide plate; when the low molecular weight polymer content exceeds 8% by weight, the heat resistance of the light guide plate The low molecular weight polymer content of the weight average molecular weight _~2_ is more preferably 3.6 wt%, most preferably 4 to 6 wt%. The aforementioned low molecular weight polymer comprises methyl propyl _ resin The polymer obtained by polymerizing the main component is preferably the same as the component of the methacrylate resin (A). Further, the content of the inorganic fine particles (B) is the weight of the methacrylate resin (A). X ppm 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更 更〇. 05~2· 〇. When χ/γ is in the range of 〇. 〇3~3 ,, the guide is made The high brightness of the light plate is more preferable. The method for producing the methacrylate resin of the present invention may be any one of a suspension polymerization method, an emulsion polymerization method, a continuous block polymerization method, or a continuous solution polymerization method 200904887. The present invention is based on the viewpoint of mass production and handling convenience, and is preferably a continuous solution polymerization method in which the continuous solution polymerization method is a raw material monomer (for example, a methacrylate monomer, etc.). The polymer is obtained by continuously adding a solvent, and optionally a starter, a molecular weight regulator, etc., to the polymer obtained by polymerization, and the solvent is continuously taken out from the reactor, and obtained by a devolatization step. A acrylate based resin. The solvent used therein has a boiling point higher than that of the monomer of the raw material resin (for example, methacrylic acid methacrylate monomer and/or co-coordinating monomer), for example, toluene, xylene, ethyl benzoquinone-B. Aromatic compounds of base materials, aliphatic S compounds such as Wei, ship, etc., alicyclic compounds such as naphthalene, butyl acetate, valerate, etc. 1,1,2,2-tetra-milk Wait for the test compound. Among them, toluene, toluene, and ethyl have a suitable boiling point, and the load is less when degassing, and the compound has no adverse effect, so it is a preferable choice. The solution is based on solvent. However, depending on the weight of the total mixture at the time of polymerization, it is preferably at least % by weight, more preferably at most 55% by weight. (5) Translation Ding Wen (7) Heart-taking order starter, which is a polymeric yarn that can be decomposed in poly. j and produces free radicals. For example: =: butyl butyl, bisperoxy isopropyl peroxide, methyl methacrylate - second butyl peroxy citrate, ditributyl butyl acetate, 2, 5 - dimethyl-25^〇^^#_ 弟一丁; 1 W & 5 a (over-emulsified tert-butyl) hexanebutyl M3,3,5-trimethyl)cyclohexene, u- A ring is made of (10)^oxidation: third amyl group, peroxidation" (iv), cumene hydroperoxide, lauryl peroxide, azobis-acetic acid vinegar, 1, Γ-azobiscyclohexanone, 2 —Phenylazo^2$200904887 Group 4-methoxy valeronitrile, 2-cyano 2, 2-propyl azocarboxylic acid, 2, 2,-azobisisobutyronitrile, and the like. The amount of the polymerization initiator to be used is preferably 〇.% by weight, more preferably % by weight, based on the weight of the total reaction monomer mixture. ^ The molecular weight of the invention is adjusted to sulfur, for example: n-butyl mercaptan, isobutyl mercaptan, n-octyl mercaptan, n-dodecyl mercaptan, tert-butyl mercaptan, Twenty-second carbon mercaptan, phenyl mercaptan, sulfur methanol, sulfuric acid vinegar and its vinegar and ethanedithiol. The weight of the molecular weight regulator is the total weight of the single-fluid composition, and the contact is Q. With ~ 〇. 8 wt%, more preferably 〇 01~0. 35 wt%. The reaction tank can use a stirring device with a double helix or a paddle type stirring blade. The monomer mixture solution is continuously supplied to the reaction tank, and polymerization is carried out at a temperature of 7 〇 16 (rc), and the conversion ratio of the monomer is 40 to 90%. X is obtained by depolymerizing the polymer solution obtained by the above polymerization reaction. The depolymerization can be carried out using an extruder or a detachment tank with a plurality of vent holes. It is preferred to heat the polymer solution to a temperature of ~290 ° C by a preliminary heater or the like. Then, 2GG~27Gt, 20~(10)Torr is used in the devolatilization tank of vacuum y to obtain the scent of the sylvestre sylvestre (4) ester (4), and the sputum is the resin of the methyl methacrylate acid (1). The raw material is dissolved in the state, and is sent to the tB machine', and the money recording and the slag are added, and the sputum is further exchanged to remove the sputum and then cooled to obtain a granular methacrylic vinegar resin composition. In addition to the inorganic fine particles and the slip agent, ultraviolet light absorption, fluorescence, anti-oxidation #j, color, pigment, etc. may be added as needed. The methyl acetoacetate rotary wax composition of the present invention is used as a resin 10 200904887 Board (light guide), based on mass production and ease of operation The point is preferably produced by extrusion molding, that is, the above-mentioned methyl acrylate vinegar resin composition is extruded from the τ die in (4) auxiliary mixing county, and sequentially passed through the temperature-regulated 3 ～5 抛 之间 之间 之间 之间 之间 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛 抛俾The product of the squeezing plate can be obtained. In addition, the desired thickness can be manufactured by adjusting the polishing light gap and the pulling speed. The general light guide plate is a resin extrusion plate with a thickness of 2 to 15 faces. [The average brightness and brightness are uniform. Method for measuring the degree], using a shovel to describe the resin plate, the back surface is printed as a 'light plate through the dot, and the light guide plate is set as shown in the first figure, wherein, the two sides of the light guide plate 3 are respectively The cold cathode lamp i is disposed, and the size of the light guide plate is 19"'. The light reflection plate 4 is disposed under the light guide plate 3, and the upper and lower diffusion films 5 and the brightness enhancement film (bef) 6 are arranged in parallel above, and the cold cathode lamp is arranged. After the tube 1 is lit, it is placed 5 〇cm above the light guide plate. The iK〇nica version plus the $1 system of the luminance meter CS-1GGG 'sets the brightness of 81 points and obtains its arithmetic mean' is the average _(_). The ratio of the minimum to the maximum of 81 points That is, the uniformity of luminance (%). [Low molecular weight polymer content] The prepared thiol acrylate resin composition is dissolved in tetrahydrofuran (referred to as THF), and then used in gel dialysis (Gpc) Polystyrene is an analytical standard and is determined according to the following conditions:
管柱：KD-806M 檢出器：RI-410，UV-486 200904887 移動相：THF (流速 1. 0 c. c. /min) 由GPC分析之結果’分子量2, 000〜600, 000之甲美丙 烯酸酯系樹脂(A)訊號的積分總面積當作1〇〇%，可瞀出其中 2000〜20000之低分子量聚合物之積分面積所佔之比例，即 為曱基丙烯酸醋系樹脂（A)中之重量平均分子量 20000之低分子量聚合物之含量（重量％)。 【實施方式】 〔合成例1〕甲基丙烯酸酯系樹脂(A1)之合成 甲基丙烯酸甲酯97重量份、丙烯酸甲酯3重量份、正 十二烷基硫醇0. 25重量份、2, 2’ -偶氮雙異丁腈〇. 15重量 份及曱苯200重量份混合後’連續地送入一反應槽進行連 續式溶液聚合反應。該反應槽具有熱媒油循環之夾層，反 應溫度維持在l〇〇°C ’壓力為600 Torr。反應槽内充分授 拌使各成分均勻混合，並將聚合物溶液加熱至265°c後於減 壓下連續送入附脫氣口之脫氣押出機，真空度維持在1〇〇Column: KD-806M Detector: RI-410, UV-486 200904887 Mobile phase: THF (flow rate 1.0 cc / min) Results by GPC analysis 'Molecular weight 2,000 to 600,000 of methacrylate The total integrated area of the resin (A) signal is taken as 1%, and the proportion of the integral area of the low molecular weight polymer of 2000 to 20000 can be extracted, which is the thiophene acrylate resin (A). The content (% by weight) of the low molecular weight polymer having a weight average molecular weight of 20,000. [Example 1] Synthesis of methyl methacrylate resin (A1) 97 parts by weight of methyl methacrylate, methyl acrylate 3 parts by weight, n-dodecyl mercaptan 0. 25 parts by weight, 2 2'-Azobisisobutyronitrile. 15 parts by weight and 200 parts by weight of toluene are mixed and then continuously fed into a reaction tank for continuous solution polymerization. The reaction vessel has an interlayer of heat medium oil circulation, and the reaction temperature is maintained at a pressure of 600 Torr at 10 °C. The reaction tank is fully mixed to uniformly mix the components, and the polymer solution is heated to 265 ° C, and then continuously fed to a degassing extruder with a degassing port under reduced pressure, and the vacuum is maintained at 1 Torr.
Ton*，將聚合物溶液脫揮之後，可得熔融態曱基丙烯酸酯 系樹脂(Α1)。 〔合成例2〕甲基丙烯酸酯系樹脂(Α2)之合成 曱基丙烯酸甲酯97重量份、丙烯酸甲酯3重量份、正 十二烷基硫醇0. 27重量份、2, 2,-偶氮雙異丁腈〇. 17重量 份及甲苯200重量份混合後，連續地送入一反應槽進行連 續式溶液聚合反應。該反應槽具有熱媒油循環之夾層，反 應溫度維持在HTC，壓力為6G0 T〇rr。反應槽内充分授 摔使各成分均勻混合’並將聚合物溶液加熱至265°C後於減 壓下連續送入附脫氣口之脫氣押出機，真空度維持在1〇〇 12 200904887Ton*, after the polymer solution is devolatilized, a molten methacrylate resin (?1) is obtained. [Synthesis Example 2] Synthesis of methyl methacrylate resin (Α2) 97 parts by weight of methyl methacrylate, methyl acrylate 3 parts by weight, n-dodecyl mercaptan 0. 27 parts by weight, 2, 2, - After mixing with 17 parts by weight of azobisisobutyronitrile and 200 parts by weight of toluene, it was continuously fed to a reaction tank for continuous solution polymerization. The reaction tank has an interlayer of heat medium oil circulation, the reaction temperature is maintained at HTC, and the pressure is 6G0 T〇rr. The reaction tank is fully compensated to uniformly mix the components. The polymer solution is heated to 265 ° C and continuously fed to the degassing extruder with degassing port under reduced pressure. The vacuum is maintained at 1 〇〇 12 200904887
Torr，將聚合物溶液脫揮之後，可得熔融態曱基丙烯酸酯 糸樹脂(A2)。 〔合成例3〕曱基丙烯酸酯系樹脂(A3)之合成 曱基丙烯酸曱酯97重量份、丙烯酸曱酯3重量份、正 十二统基硫醇0. 4重量份、2, 2’ -偶氮雙異丁腈〇. 25重量 份及甲苯200重量份混合後，連續地送入一反應槽進行連 續式溶液聚合反應。該反應槽具有熱媒油循環之夾層，反 應溫度維持在122°C，壓力為600 Torr。反應槽内充分授 拌使各成分均勻混合’並將聚合物溶液加熱至265〇c後於減 壓下連續送入附脫氣口之脫氣押出機，真空度維持在1〇〇Torr, after the polymer solution is devolatilized, a molten methacrylate oxime resin (A2) is obtained. [Comparative Example 3] Synthesis of mercapto acrylate-based resin (A3) 97 parts by weight of decyl acrylate, 3 parts by weight of decyl acrylate, n-dodecyl thiol 0. 4 parts by weight, 2, 2' - After mixing with 25 parts by weight of azobisisobutyronitrile and 200 parts by weight of toluene, it was continuously fed to a reaction tank for continuous solution polymerization. The reaction vessel had an interlayer of heat medium oil circulation, the reaction temperature was maintained at 122 ° C, and the pressure was 600 Torr. The reaction tank is fully mixed to uniformly mix the components' and the polymer solution is heated to 265 〇c, and then continuously sent to the degassing extruder with the degassing port under reduced pressure, and the vacuum is maintained at 1 Torr.
Torr，將聚合物溶液脫揮之後，可得熔融態曱基丙烯酸酯 系樹脂(A3)。 〔合成例4〕甲基丙烯酸酯系樹脂(A4)之合成 甲基丙稀酸甲酯97重量份、丙稀酸甲酯3重量份、正 十二烷基硫醇〇. 08重量份、2, 2’ -偶氮雙異丁腈〇. 〇8重量 份及甲苯200重量份混合後，連續地送入一反應槽進行連 續式溶液聚合反應。該反應槽具有熱媒油循環之夾層，反 應溫度維持在8〇°C，壓力為600 Torr。反應槽内充分授拌 使各成分均勻混合’並將聚合物溶液加熱至卩阳它後於減壓 下連續送入附脫氣口之脫氣押出機，真空度維持在1〇〇After Torr, the polymer solution is devolatilized to obtain a molten methacrylate resin (A3). [Synthesis Example 4] Synthesis of methyl methacrylate resin (A4) 97 parts by weight of methyl methacrylate, methyl acrylate 3 parts by weight, n-dodecyl mercaptan oxime. 08 parts by weight, 2 2'-Azobisisobutyronitrile. After mixing 8 parts by weight and 200 parts by weight of toluene, it is continuously fed to a reaction tank for continuous solution polymerization. The reaction tank has an interlayer of heat medium oil circulation, the reaction temperature is maintained at 8 ° C, and the pressure is 600 Torr. The reaction tank is fully mixed to uniformly mix the components. The polymer solution is heated to the cation and then continuously sent to the degassing extruder with the degassing port under reduced pressure. The vacuum is maintained at 1 Torr.
Torr，將聚合物溶液脫揮之後，可得熔融態曱基丙烯酸酯 系樹脂(A4)。 〔實施例1〕 將合成例1所製得之甲基丙烯酸酯系樹脂(A1)以炫融 狀悲送至押出機，並添加平均粒徑〇 2#m之Ti〇2 3 口卿 13 200904887 及十八醇440 ppra，經押出混合而從模頭呈條狀押出，水Torr, after the polymer solution is devolatilized, a molten methacrylate resin (A4) is obtained. [Example 1] The methacrylate resin (A1) obtained in Synthesis Example 1 was sent to the extruder in a dazzling manner, and Ti 〇 2 3 with an average particle diameter of # 2 #m was added. And octadecyl alcohol 440 ppra, which is extruded and mixed out from the die, water
冷’切粒而得到本發明之甲基丙烯酸料、樹脂組成物。該 曱基丙烯酸S旨系樹脂組成物以GPC 漏〜2_之低分子量聚合物含量為 Χ/Υ=0·64 。 將所製得之顆粒狀曱基丙烯酸酯系樹脂組成物以導光 板押出機押出導缺。押出機溫度19Q〜施。c，模唇開度 8 mm之T模頭以9〇〇 kg/小時之吐出量、經押丨而通過4 根抛光輥而得押丨板。將押ώ板餘鑛定之尺寸並經網 點印刷後即可得到導光板，其輝度為6378 nds，輝度均齊 度為78. 4%。 〔實施例2〜5及比較例1〜6〕 同實施例1之操作方法，不同之處係改變甲基丙烯酸 醋系樹脂(A)之種類、滑劑(B)及無機微粒子(c)之種類及添 加量’其GPC測得重量平均分子量2000〜20000之低分子 量聚合物含量’ χ/γ、平均輝度及輝度均齊度之評價結果載 於表一。 200904887 表一實 施例與比較例的紅評價結果 b χ/γ、平均輝度及輝度The methacrylic acid material and the resin composition of the present invention are obtained by cold dicing. The methacrylic acid S-based resin composition has a low molecular weight polymer content of PC/Υ = 0.66 in a GPC leak of ~2_. The pelletized thiol acrylate resin composition obtained was extruded to a guide with a light guide plate extruder. The extruder temperature is 19Q~ Shi. c. The T-die with a lip opening of 8 mm is smashed with a discharge volume of 9 〇〇 kg/hour and passed through four polishing rolls. The light guide plate has a brightness of 6378 nds and a uniformity of luminance of 78.4%. [Examples 2 to 5 and Comparative Examples 1 to 6] The same operation method as in Example 1 except that the type of the methacrylic acid-based resin (A), the slip agent (B), and the inorganic fine particles (c) were changed. The evaluation results of the types and addition amounts 'low molecular weight polymer content of the weight average molecular weight of 2000 to 20000 by GPC' χ/γ, average luminance and luminance uniformity are shown in Table 1. 200904887 Table 1 Red Evaluation Results of Examples and Comparative Examples b χ/γ, Average Brightness and Brightness
英文名稱 methyl methacrylate methyl acrylate butyl stearate (熔點 <40。〇 e_ene bis stearyl amide (熔點〉85〇C) 簡稱 中文名稱 MMA 甲基丙烯酸甲酯 MA @烯酸甲酯 BS 硬脂酸丁酯 EBA 乙撐雙硬酯醯銨 圖式簡單說明】 第一圖係利用本發明製得導光板進行平均輝度與輝度均齊 度測定時之設置狀態示意圖。 【主要元件符號說明】 15 200904887 冷陰極燈管1 導光板3 上、下擴散膜5 亮度增強膜6 光反射板4 16English name methyl methacrylate methyl acrylate butyl stearate (melting point <40. 〇e_ene bis stearyl amide (melting point > 85〇C) Abbreviation Chinese name MMA methyl methacrylate MA @ enoate methyl ester BS butyl stearyl EBA Brief Description of the Bismuth Ammonium Ammonium Pattern The first figure is a schematic diagram of the setting state when the light guide plate of the present invention is used for the measurement of the average luminance and luminance uniformity. [Main component symbol description] 15 200904887 Cold cathode lamp 1 guide Light plate 3 upper and lower diffusion film 5 brightness enhancement film 6 light reflection plate 4 16