用以實施發明之形態 本發明之聚合物微粒組成物係將化學式(1)所示之乙氧基化鄰苯基苯酚(甲基)丙烯酸酯系化合物98～70質量%、分子量小於化學式(1)所示之二乙烯基化合物2～30質量%(兩者合計100質量%)予以架橋共聚而成。 [化學式1]式中，R為H或-CH3
。 化學式(1)所示之化合物能以有關(甲基)丙烯酸酯合成之習知方法來合成，又，式(1)中之R為H(氫)之乙氧基化鄰苯基苯酚丙烯酸酯可從市面上取得商品名「A-LEN-10」(新中村化學股份有限公司製)。 已知化學式(1)之化學物的折射率大，但具體使用方法僅止於光硬化性樹脂用單體(新中村化學股份有限公司網頁)或眼內晶體(例如日本專利公開公報2006-249381號)，高折射率微粒組成物作為原料的具體使用方法，至今尚未揭示。 化學式(1)之化合物在丙烯酸酯化合物中，較為缺乏親水性，且為高黏度。O/W型乳劑一般為大滴的油相(或油滴，以下同)，且油相容易結合。一般而言，為了將O/W乳劑中之油相予以微小化至5mm以下，添加界面活性劑，但未發現對化學式(1)之化合物顯示特別且顯著效果的界面活性劑，須大量添加界面活性劑。然而，該情況下，除了後處理繁雜以外，殘留的界面活性劑可能對粒子的光擴散劑功能造成妨礙。又，依據本發明者等人的檢討，化學式(1)所示之化合物在強攪拌下，即使與一般量的界面活性劑併用，油相仍不易切斷‧微細化，又，切斷‧微細化後，仍容易結合‧回復成大粒子，不會成為5mm以下之油相。 本發明者等人發現藉由將化學式(1)之化學物(式中，R為氫時，分子量是268，R為CH3
時則是282)98～70質量%、及分子量小於化學式(1)之化合物之二乙烯基化合物2～30質量%(兩者合計100質量%)予以共聚，獲得可解決本申請案課題之聚合物微粒，其中尤其以平均粒徑在1～5mm範圍內，且折射率在1.60～1.62範圍內之聚合物微粒組成物較佳。 化學式(1)之化合物宜為98～70質量%，90～75質量%更佳。再者，若小於70質量%，可獲得折射率1.60以上之微粒，若超過98質量%，難以使聚合物微粒之平均粒徑為5mm以下。 分子量小於化學式(1)之化合物之二乙烯基化合物宜為2～30質量%，更宜為10～25質量%。再者，若小於2質量%，難以使聚合物微粒之平均粒徑為5mm以下，若超過30質量%，難以獲得具有1.60以上折射率之微粒。 本聚合物微粒組成物可舉出例如如下測定方法。平均粒徑可採用BECKMAN COULTER之Multisizer 4，使用光圈孔徑30mm用以測定。又，折射率可按照JISK7132B法來測定。 再者，若使用分子量大於化學式(1)之化合物之二乙烯基化合物、三乙烯基化合物，則有時所獲得之聚合物微粒之平均粒徑變大，而且折射率脫離預定範圍，光擴散效果變差。 本發明者等人認為本發明之分子量小於化學式(1)之二乙烯基化合物，除了原本作為架橋劑之功能以外，就O/W型乳劑的調整及後續之懸濁聚合方面，具有i)～iv)效果。 i)與化學式(1)之混合性(親合性)優良，容易成為均勻油相(油滴)。 ii)於O/W型乳劑調整下，剪切條件下化學式(1)作為主成分之油相的外觀黏度降低效果優良。 iii)懸濁聚合反應進行時之架橋速度的迅速性優良，抑制粒子間再結合所造成的粒子增大。 iv)與化學式(1)之共聚性優良。 若要舉出本發明之二乙烯基化合物之較佳具體例，可舉出分子量小、且與化學式(1)之化合物同樣為芳香族化合物之二乙烯基苯(DVB，分子量130)(可從市面取得之鄰二乙烯基苯、對二乙烯基苯混合物，與化學式(1)同樣為(甲基)丙烯酸酯衍生物之乙二醇二甲基丙烯酸酯(EDGMA。分子量198)、1,3-丁二醇二甲基丙烯酸酯(BDDMA。分子量226)、羥基-3-丙烯醯氧甲基丙烯酸丙酯(別名：1- (丙烯醯氧) -3- (甲基丙烯醯氧) -2-丙醇)(HAPMA，分子量214)。 本發明之聚合物微粒可藉由習知之懸濁聚合反應裝置、反應步驟來獲得。較佳製造方法包含：將油相與水相予以O/W型乳劑化之步驟，而前述油相包含化學式(1)98～70質量%，及具有小於化學式(1)之分子量、分子量小於乙氧基化鄰苯基苯酚丙烯酸酯(分子量268)之二乙烯基化合物2～30質量%(兩者合計100質量%)而成；及接續於前述步驟之前述O/W型乳劑之乳化聚合步驟。 使用於本發明之懸濁聚合之聚合起始劑並無限制。可使用一般用於水系懸濁聚合之油溶性過氧化系聚合起始劑，或偶氮系聚合起始劑。具體而言，可舉出過氧化苯甲醯、過氧化月桂醯、過氧化辛醯、鄰氯過氧化苯甲醯、鄰甲氧過氧化苯甲醯、過氧化丁酮、過氧化二碳酸二異丙酯、氫過氧化異丙苯、過氧化環己酮、過氧化三級丁基、過氧化氫二異丙苯等過氧化物系聚合起始劑；偶氮雙戊腈、2,2'-偶氮雙異戊腈、2,2'-偶氮雙(2,4-二甲基戊腈)、2,2'-偶氮雙(2,3-二甲基戊腈)、2,2'-偶氮雙(2-甲基戊腈)、2,2'-偶氮雙(2,3,3-三甲基丁腈)、2,2'-偶氮雙(2-異丙基丁腈)、1,1'-偶氮雙(環己烷-1-腈)、2,2'-偶氮雙(4-甲氧-2,4-二甲基戊腈)、(2-氨基甲醯基偶氮)異丁腈、4,4'-偶氮雙(4-氰基戊酸)、二甲基-2,2'-偶氮異丁酯等偶氮系起始劑。 其中就具有適度速度之聚合起始劑分解速度方面等來看，以2,2'-偶氮雙異戊腈、2,2'-偶氮雙(2,4-二甲基戊腈)、過氧化苯甲醯、過氧化月桂醯等較佳。聚合起始劑係相對於單體混合物100質量部，宜使用0.01～10質量部，更宜使用0.01～5質量部。聚合起始劑若小於0.01質量部，難以發揮聚合起始的功能，又，使用超過10質量部時，添加量為必要以上，在成本上不符經濟效益，故不適宜。 包含化學式(1)之化合物、及分子量小於其之二乙烯基化學物之油水混合物，係於按照常法溶解聚合起始劑後，與包含聚合安定劑及界面活性劑之水溶液攪拌混合，藉此調整為O/W型乳劑。於攪拌下加熱O/W型乳劑混合液，進行聚合反應，獲得目的之聚合物微粒組成物。聚合安定劑可使用聚乙烯醇等水溶性高分子或磷酸鈣等無機系安定劑。 界面活性劑係使用不對聚合反應性造成影響之非離子系界面活性劑，使用甘油脂肪酸酯、山梨糖醇酐脂肪酸酯等酯型、聚氧乙烯(或POE)烷醚、聚氧乙烯(或POE)烷基苯醚、聚氧乙烯聚氧丙二醇等醚型，及於脂肪酸或多價醇脂肪酸酯附加有環氧乙烷類型，於分子中具有酯結合與醚結合雙方之酯醚型等。 懸濁聚合後，聚合物微粒組成物粒子係從聚合反應液，藉由一般的操作，經固液分離步驟及乾燥步驟後進行解碎，藉此作為粉體取出使用。亦即，藉由採離心分離獲得濕餅後進行棚板式乾燥之方法、採噴霧乾燥之方法等去除水分後，藉由採鎚碎機、珠磨機等給予衝擊，可搓開凝集獲得一次或二次粒子。微粒形狀並未特別限定，宜為球形、旋轉橢圓體等。 本發明之聚合物微粒組成物可於如下任一者使用：藉由習知方法，於例如(甲基)丙烯酸系光擴散片材料中溶融混練、成型，藉此製作之光擴散片；或於(甲基)丙烯酸系溶液中懸濁、澆注，去除溶劑而成型的方法；及於透明環氧預聚物中懸濁，將片材表面塗層的方法。屆時，可添加各種添加劑、填充材料等。又，片材表面亦可施加凹凸紋路或浮雕加工。 再者，該等光擴散片之厚度並未特別限定，從用途、生產性、處理性及搬運性的觀點來看，宜為0.1mm～20mm，更宜為0.5mm～15mm，進而宜為1mm～10mm。 前述光擴散片除了上述以外，一般會使用的塑膠材料亦可舉出例如聚乙烯(PE)、聚丙烯(PP)，聚對苯二甲酸乙二酯(PET)、聚乙烯醇(PVA)、聚氯乙烯(PVC)、聚碳酸酯(PC)等樹脂。例如相對於該等片材用樹脂100質量部，本發明之聚合物微粒組成物能以1～20質量部的範圍使用。 例如將混練聚對苯二甲酸乙二酯100部、本發明之聚合物微粒組成物5部而得之化合物予以展延，亦可獲得厚度60～150mm之片材。又，在無損於該等樹脂之透明性的範圍內，可添加安定劑、紫外線吸收劑、滑劑等。 本發明之聚合物微粒組成物除了前述光擴散片以外，可調配於塗料、印刷墨水、化妝品等。 本發明之聚合物微粒組成物可使用於塗料。可例示例如有機溶劑塗料、水性塗料、乳劑塗料、膠態塗料、粉體塗料等。相對於塗料樹脂部分100質量部，可調配1～100質量部。調配量宜為1～70質量部，進而宜為1～20質量部。 本發明之聚合物微粒組成物可使用於印刷墨水。可舉出例如凸版墨水、平板墨水、凹版墨水、金屬板用墨水、放射線硬化型墨水、UV墨水、EB墨水、柔版墨水、絲網墨水、轉印墨水、照相凹版墨水等及水性墨水等。相對於墨水中樹脂固體部分100質量部，可調配1～100質量部。調配量宜為1～70質量部，進而宜為1～20質量部。 本發明之聚合物微粒組成物可使用於化妝品。可舉出例如上妝化妝品、毛髮用化妝品、包裝化妝品等。可使用於例如凝膠、口紅、粉底、腮紅、睫毛膏、指甲油、眉筆、眼影、眼線、毛髮劑等。調配量可舉出1～90質量部。例如若是粉底可例示1～50質量部，若是眼影可例示1～80質量部，若是口紅可例示1～40質量部，若是指甲油可例示0.1～20質量部。 本發明之聚合物微粒組成物可調配於影印機用彩色碳粉等。 [實施例] 以下舉出實施例、比較例及試驗例來具體說明本發明。再者，部為質量部。 (聚合物微粒組成物之製造方法) (特性測定方法) 1)平均粒徑 平均粒徑係採用BECKMAN COULTER之Multisizer 4、光圈孔徑30mm進行測定。再者，從比較例9至14，由於存在許多粒徑30mm以上的粗粒，因此採用光圈孔徑70mm。 2)折射率 按照JIS K 7132B法來測定微粒折射率。 (聚合物微粒組成物之製造) (實施例1～7) 於分散容器放入去離子水200質量部、聚乙烯醇6質量部。有別於此，作為化學式(1)之化合物，將預定量(參考表1)之乙氧基化鄰苯基苯酚丙烯酸酯(EPPA，新中村化學製，商品名「ALEN-10」)、預定量(參考表1)之分子量小於化學式(1)之化合物之預定二乙烯基化合物、二乙烯基苯(DVB，分子量130)、乙二醇二甲基丙烯酸酯(EDGMA，分子量198)、1,3-丁二醇二甲基丙烯酸酯(BDDMA，分子量226)、以及羥基-3-丙烯醯氧甲基丙烯酸丙酯(別名：1-(丙烯醯氧)-3-(甲基丙烯醯氧)-2-丙醇)(HAPMA。分子量214)，合計100質量部，及調整過氧化月桂醯基1質量部，放入上述分散容器，製成油水混合液。藉由分散機，以19000rpm將所獲得之油水混合液分散處理2分鐘，獲得O/W型乳劑。將該乳劑注入於備有攪拌機、溫度計、回流冷卻器及氮導入口之聚合反應器，於氮投入下，以80℃進行4小時聚合反應。 (比較例1～7) 取代實施例之預定的分子量小於化學式(1)之二乙烯基化合物，使用三乙烯基化合物之三甲基丙烷三丙烯酸酯(TMPTA。分子量296)、分子量大於化學式(1)之二乙烯基化合物之1,10-癸二醇二丙烯酸酯(DDDA。分子量310)、[2,2-雙(4- (甲基丙烯醯氧乙氧基)苯基]丙烷(商品名「BPE-100」新中村化學製)，進行同樣的處理。 於表1表示結果，可知僅於本發明的組成內，可獲得折射率1.60～1.62且平均粒徑2～5mm範圍之聚合物微粒組成物。尤其可知作為二乙烯基化合物之二乙烯基苯，無論質量%為何，均安定且賦予高折射率，低分子量及與化學式(1)之化合物的高親和性兼備，藉此賦予特殊的效果。 (光擴散層用塗料及光擴散層片之製造) 將實施例及比較例所獲得之各微粒60部與聚酯樹脂Vylon 20SS(東洋紡製熱熔類型)200部，以分散攪拌機於室溫攪拌混合，獲得「光擴散層用塗料」。 基材使用厚度75mm之PET片材HSL-75mm(Teijin DuPont製)，於其一面，使用自動塗工裝置PI-1210(TESTER SANGYO製)，將上述光擴散層用塗料塗布成乾燥膜厚會成為約20mm，使之熱風乾燥而獲得光擴散層之乾燥塗膜。塗布步驟結束後，於40℃恆溫室中，進行48小時熱老化處理，製作「光擴散片」。 [表1]產業上之可利用性 本發明之聚合物微粒組成物由於例如具有高折射率及與丙烯酸系樹脂之親和性，可使用黏合劑，於丙烯酸系光擴散片表面配置為凹凸狀，或者使其含於片材中，令其產生起因於折射率差之穿透光擴散，因此適宜用於背光用擴散片之光擴散劑。In the form of the polymer microparticles of the present invention, the ethoxylated o-phenylphenol (meth)acrylate compound represented by the chemical formula (1) is 98 to 70% by mass, and the molecular weight is less than the chemical formula (1). 2 to 30% by mass of the divinyl compound shown (100% by mass in total) is bridge-polymerized. [Chemical Formula 1] Wherein R is H or -CH 3 . The compound of the formula (1) can be synthesized by a conventional method for synthesizing (meth) acrylate, and the ethoxylated o-phenylphenol acrylate of the formula (1) wherein R is H (hydrogen) The product name "A-LEN-10" (manufactured by Shin-Nakamura Chemical Co., Ltd.) is available from the market. It is known that the chemical substance of the chemical formula (1) has a large refractive index, but the specific method of use is only limited to a monomer for photocurable resin (New Nakamura Chemical Co., Ltd. webpage) or an intraocular lens (for example, Japanese Patent Laid-Open Publication No. 2006-249381) No.), the specific use method of the high refractive index particulate composition as a raw material has not been disclosed so far. The compound of the formula (1) is relatively hydrophilic in the acrylate compound and has a high viscosity. The O/W emulsion is generally a large droplet of oil phase (or oil droplets, the same below), and the oil phase is easily combined. In general, in order to miniaturize the oil phase in the O/W emulsion to 5 mm or less, a surfactant is added, but a surfactant which exhibits a particularly remarkable effect on the compound of the chemical formula (1) is not found, and a large amount of interface must be added. Active agent. However, in this case, in addition to the complicated post-treatment, the residual surfactant may hinder the function of the light diffusing agent of the particles. Further, according to the review by the inventors of the present invention, the compound represented by the chemical formula (1) is hardly cut off even when mixed with a general amount of the surfactant under strong stirring, and the fine phase is also cut off. After the chemical conversion, it is still easy to combine and return to large particles, and it will not become an oil phase of 5 mm or less. The present inventors have found that a chemical of the formula (1) (wherein, when R is hydrogen, the molecular weight is 268, when R is CH 3 is 282) 98 to 70% by mass, and the molecular weight is less than the chemical formula (1) 2 to 30% by mass of the divinyl compound of the compound (100% by mass in total) is copolymerized to obtain polymer microparticles which can solve the problem of the present application, wherein the average particle diameter is particularly in the range of 1 to 5 mm, and The polymer fine particle composition having a refractive index in the range of 1.60 to 1.62 is preferred. The compound of the formula (1) is preferably from 98 to 70% by mass, more preferably from 90 to 75% by mass. In addition, when it is less than 70% by mass, fine particles having a refractive index of 1.60 or more can be obtained, and if it exceeds 98% by mass, it is difficult to make the average particle diameter of the polymer fine particles 5 mm or less. The divinyl compound having a molecular weight smaller than that of the compound of the formula (1) is preferably from 2 to 30% by mass, more preferably from 10 to 25% by mass. In addition, when it is less than 2% by mass, it is difficult to obtain an average particle diameter of the polymer fine particles of 5 mm or less, and if it exceeds 30% by mass, it is difficult to obtain fine particles having a refractive index of 1.60 or more. The polymer microparticle composition can be exemplified by the following measurement methods. The average particle size can be measured by BECKMAN COULTER Multisizer 4 using an aperture diameter of 30 mm. Further, the refractive index can be measured in accordance with JIS K7132B. Further, when a divinyl compound or a trivinyl compound having a molecular weight larger than that of the compound of the formula (1) is used, the average particle diameter of the obtained polymer microparticles may become large, and the refractive index may be out of a predetermined range, and the light diffusion effect may be obtained. Getting worse. The present inventors believe that the vinyl compound of the present invention having a molecular weight smaller than that of the chemical formula (1), in addition to the function as a bridging agent, has i) in the adjustment of the O/W emulsion and the subsequent suspension polymerization. Iv) effect. i) The mixing property (affinity) with the chemical formula (1) is excellent, and it is easy to become a uniform oil phase (oil droplet). Ii) Under the adjustment of the O/W emulsion, the oil phase having the chemical formula (1) as a main component under the shearing condition has an excellent effect of lowering the apparent viscosity. Iii) The bridging polymerization rate is excellent in the bridging speed, and the particle growth caused by recombination between particles is suppressed. Iv) Excellent copolymerizability with the chemical formula (1). Preferred examples of the divinyl compound of the present invention include divinylbenzene (DVB, molecular weight: 130) having a small molecular weight and an aromatic compound similar to the compound of the chemical formula (1). A mixture of o-divinylbenzene and p-divinylbenzene obtained from the market, and ethylene glycol dimethacrylate (EDGMA, molecular weight 198), 1,3, which is a (meth) acrylate derivative, similar to the chemical formula (1). - Butanediol dimethacrylate (BDDMA. Molecular weight 226), hydroxy-3-propene oxime propyl methacrylate (alias: 1-(propylene oxime) -3- (methacryl oxime) -2 -propanol) (HAPMA, molecular weight 214). The polymer microparticles of the present invention can be obtained by a conventional suspension polymerization apparatus, a reaction step. The preferred production method comprises: adding an oil phase and an aqueous phase to an O/W type. a step of emulsion formation, wherein the oil phase comprises 98 to 70% by mass of the formula (1), and a divinyl group having a molecular weight smaller than the formula (1) and having a molecular weight smaller than that of the ethoxylated o-phenylphenol acrylate (molecular weight 268) 2 to 30% by mass of the compound (total 100% by mass); and the aforementioned O/W following the above steps Emulsification polymerization step of the emulsion. The polymerization initiator used in the suspension polymerization of the present invention is not limited. An oil-soluble peroxidation polymerization initiator generally used for aqueous suspension polymerization, or an azo polymerization initiation can be used. Specifically, examples thereof include benzammonium peroxide, lauric acid peroxide, octyl peroxide, ortho-benzyl benzoyl peroxide, benzoyl methoxybenzoate, butanone peroxide, and peroxide. a peroxide-based polymerization initiator such as diisopropyl carbonate, cumene hydroperoxide, cyclohexanone peroxide, tributyl butyl peroxide or dicumyl hydroperoxide; azobisvaleronitrile; , 2'-azobisisopramonitrile, 2,2'-azobis(2,4-dimethylvaleronitrile), 2,2'-azobis(2,3-dimethylvaleronitrile) , 2,2'-azobis(2-methylvaleronitrile), 2,2'-azobis(2,3,3-trimethylbutyronitrile), 2,2'-azobis (2 -isopropylbutyronitrile), 1,1'-azobis(cyclohexane-1-carbonitrile), 2,2'-azobis(4-methoxy-2,4-dimethylvaleronitrile) , (2-carbamoylazo)isobutyronitrile, 4,4'-azobis(4-cyanovaleric acid), dimethyl-2,2'-azoisobutyl ester, etc. Starting agent, which has a moderate speed In terms of the decomposition rate of the initiator, etc., 2,2'-azobisisoprene, 2,2'-azobis(2,4-dimethylvaleronitrile), benzammonium peroxide, It is preferred to oxidize laurel, etc. The polymerization initiator is preferably used in an amount of 0.01 to 10 parts by mass, more preferably 0.01 to 5 parts by mass, based on 100 parts by mass of the monomer mixture. If the polymerization initiator is less than 0.01 part by mass, it is difficult to exert The function of the initial polymerization, when more than 10 parts by mass is used, the addition amount is more than necessary, and it is not economical in terms of cost, so it is not suitable. The compound containing the chemical formula (1) and the divinyl chemical having a molecular weight smaller than the same The oil-water mixture is adjusted to an O/W type emulsion by stirring and mixing the polymerization initiator according to a usual method with an aqueous solution containing a polymerization stabilizer and a surfactant. The O/W emulsion mixture was heated under stirring to carry out a polymerization reaction to obtain a desired polymer fine particle composition. As the polymerization stabilizer, a water-soluble polymer such as polyvinyl alcohol or an inorganic stabilizer such as calcium phosphate can be used. The surfactant is a nonionic surfactant which does not affect the polymerization reactivity, and an ester type such as glycerin fatty acid ester or sorbitan fatty acid ester, polyoxyethylene (or POE) alkyl ether or polyoxyethylene (polyoxyethylene) is used. Or POE) an ether type such as an alkyl phenyl ether or a polyoxyethylene polyoxypropylene glycol, and an ester ether type in which a fatty acid or a polyvalent alcohol fatty acid ester is added with an ethylene oxide type and both an ester bond and an ether bond in the molecule. Wait. After the suspension polymerization, the polymer fine particle composition particles are taken out from the polymerization reaction liquid by a general operation, subjected to solid-liquid separation step and drying step, and then taken out as a powder. That is, after the wet cake is obtained by centrifugal separation, the method of drying the shed, the method of spray drying, etc., the water is removed by a hammer mill, a bead mill, or the like, and the agglutination can be performed once or Secondary particles. The shape of the particles is not particularly limited, and is preferably a spherical shape, a rotating ellipsoid or the like. The polymer microparticle composition of the present invention can be used by any of the following methods: a light diffusion sheet produced by melt-kneading and molding in, for example, a (meth)acrylic light-diffusing sheet material by a conventional method; A method in which a (meth)acrylic solution is suspended and cast, and a solvent is removed to form a method; and a method of coating a surface of the sheet by suspending it in a transparent epoxy prepolymer. At that time, various additives, filler materials, and the like can be added. Further, the surface of the sheet may be subjected to embossing or embossing. In addition, the thickness of the light-diffusing sheet is not particularly limited, and is preferably from 0.1 mm to 20 mm, more preferably from 0.5 mm to 15 mm, and further preferably from 1 mm, from the viewpoints of use, productivity, handleability, and portability. ~10mm. In addition to the above, the above-mentioned light diffusing sheet may be, for example, polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl alcohol (PVA), or the like. Resin such as polyvinyl chloride (PVC) or polycarbonate (PC). For example, the polymer fine particle composition of the present invention can be used in an amount of from 1 to 20 parts by mass based on 100 parts by mass of the sheet resin. For example, a compound obtained by kneading 100 parts of polyethylene terephthalate and 5 parts of the polymer fine particle composition of the present invention is stretched, and a sheet having a thickness of 60 to 150 mm can also be obtained. Further, a stabilizer, an ultraviolet absorber, a lubricant, or the like may be added to the extent that the transparency of the resin is not impaired. The polymer microparticle composition of the present invention can be blended with a paint, a printing ink, a cosmetic or the like in addition to the above-mentioned light-diffusing sheet. The polymer particulate composition of the present invention can be used in coatings. For example, an organic solvent coating, an aqueous coating, an emulsion coating, a colloidal coating, a powder coating, or the like can be exemplified. It can be adjusted to 1 to 100 parts by mass with respect to 100 parts of the coating resin portion. The blending amount is preferably from 1 to 70 parts by mass, and more preferably from 1 to 20 parts by mass. The polymer particulate composition of the present invention can be used for printing inks. Examples thereof include relief ink, flat ink, gravure ink, metal plate ink, radiation curable ink, UV ink, EB ink, flexographic ink, screen ink, transfer ink, gravure ink, and the like, and aqueous ink. It is adjustable from 1 to 100 parts by mass with respect to 100 parts by mass of the resin solid portion in the ink. The blending amount is preferably from 1 to 70 parts by mass, and more preferably from 1 to 20 parts by mass. The polymer microparticle composition of the present invention can be used in cosmetics. For example, a makeup cosmetic, a hair cosmetic, a packaging cosmetic, and the like can be given. It can be used, for example, in gels, lipsticks, foundations, blushers, mascaras, nail varnishes, eyebrow pencils, eye shadows, eyeliners, hair lotions, and the like. The blending amount is 1 to 90 parts by mass. For example, the base may be 1 to 50 parts by mass, and the eye shadow may be 1 to 80 parts by mass, and the lipstick may be 1 to 40 parts by mass, and the nail polish may be 0.1 to 20 parts by mass. The polymer microparticle composition of the present invention can be formulated into a color toner for a photocopier or the like. [Examples] Hereinafter, the present invention will be specifically described by way of examples, comparative examples and test examples. Furthermore, the Ministry is the Quality Department. (Method for Producing Polymer Microparticle Composition) (Method for Measuring Characteristics) 1) Average particle diameter The average particle diameter was measured using a Multisizer 4 of BECKMAN COULTER and an aperture diameter of 30 mm. Further, from Comparative Examples 9 to 14, since a large number of coarse particles having a particle diameter of 30 mm or more were present, an aperture diameter of 70 mm was employed. 2) Refractive index The refractive index of the particles was measured in accordance with JIS K 7132B. (Production of polymer fine particle composition) (Examples 1 to 7) 200 parts by mass of deionized water and 6 parts by mass of polyvinyl alcohol were placed in a dispersion container. In contrast, as a compound of the chemical formula (1), a predetermined amount (refer to Table 1) of ethoxylated o-phenylphenol acrylate (EPPA, manufactured by Shin-Nakamura Chemical Co., Ltd., trade name "ALEN-10"), is scheduled. The amount (refer to Table 1) is a predetermined divinyl compound having a molecular weight smaller than that of the compound of the formula (1), divinylbenzene (DVB, molecular weight 130), ethylene glycol dimethacrylate (EDGMA, molecular weight 198), 1, 3-butanediol dimethacrylate (BDDMA, molecular weight 226), and hydroxy-3-propenyloxypropyl methacrylate (alias: 1-(propylene oxime)-3-(methacrylofluorene) -2-propanol) (HAPMA: molecular weight: 214), a total of 100 parts by mass, and a mass fraction of oxidized lauryl sulfhydryl group, and placed in the above dispersion container to prepare an oil-water mixture. The obtained oil-water mixture solution was dispersed by a dispersing machine at 19000 rpm for 2 minutes to obtain an O/W type emulsion. This emulsion was poured into a polymerization reactor equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen inlet, and the polymerization was carried out at 80 ° C for 4 hours under nitrogen injection. (Comparative Examples 1 to 7) The substituted vinyl compound having a predetermined molecular weight smaller than that of the chemical formula (1) was used, and trimethylpropane triacrylate (TMPTA, molecular weight 296) of a trivinyl compound was used, and the molecular weight was larger than the chemical formula (1). Divinyl compound 1,10-nonanediol diacrylate (DDDA. molecular weight 310), [2,2-bis(4-(methacryloxyethoxy)phenyl]propane (trade name) The same treatment was carried out in "BPE-100" (Nippon Nakamura Chemical Co., Ltd.). As shown in Table 1, it was found that polymer particles having a refractive index of 1.60 to 1.62 and an average particle diameter of 2 to 5 mm can be obtained only in the composition of the present invention. In particular, it is known that divinylbenzene which is a divinyl compound is stable and imparts a high refractive index regardless of the mass %, and has a low molecular weight and a high affinity with the compound of the chemical formula (1), thereby imparting a special (Production of Coating for Light-Diffusing Layer and Production of Light-Diffusing Layer) 60 parts of each of the fine particles obtained in the examples and the comparative examples and 200 parts of polyester resin Vylon 20SS (hot-melt type manufactured by Toyobo Co., Ltd.) were dispersed in a chamber. Mix with warm agitation to obtain "light diffusion layer The substrate was coated with a PET sheet HSL-75mm (manufactured by Teijin DuPont) having a thickness of 75 mm, and the coating material for the light diffusion layer was applied as a dry film on one surface thereof using an automatic coating device PI-1210 (manufactured by TESTER SANGYO). The film was dried to a thickness of about 20 mm, and dried to obtain a dried coating film of the light-diffusing layer. After the coating step, the film was subjected to heat aging treatment in a constant temperature room at 40 ° C for 48 hours to prepare a "light-diffusing sheet". [Table 1] INDUSTRIAL APPLICABILITY The polymer fine particle composition of the present invention can have a high refractive index and affinity with an acrylic resin, and can be disposed on the surface of the acrylic light-diffusing sheet as a concavo-convex or a binder using a binder. In the sheet, the light diffusing agent which is caused by the difference in refractive index is diffused, and thus it is suitably used as a light diffusing agent for a diffusion sheet for backlight.