476835 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（1 ) 發明之領！ 本發明係關於具良好保水性之紙面塗佈組成物κ及在表 面上形成有塗佈組成物之塗佈層之被塗佈之紙。 發明之背景 一般而言，印刷紙在其表面上形成有塗佈組成物之塗佈 曆，Μ改良平滑度、光澤即可印刷性。塗佈組成物通常為 將白色顔料諸如黏土、磨细之碳酸鈣等，Μ及粘合劑諸如 乳膠、澱粉等分散於水中所製得之流漿；Μ及為了將塗佈 組成物塗佈在紙基材之表面上，一系統被使用，其中將塗 佈組成物稀釋成適當濃度後，該稀釋之塗佈組成物從其製 備槽被供應至塗佈機器，塗佈組成物被連鎮塗佈在行進之 紙上，以及過多的被塗佈組成物藉塗佈頭諸如括刀而移除 ，以製成期望之厚度。從被塗佈之紙移除之塗佈組成物被 送回製備槽，而與新的塗佈組成物混合及被再使用。 塗佈在紙基材之表面上後，如此被塗佈之塗佈組成物被 乾燥，形成塗佈層。不過，由於在塗佈步驟至乾燥步驟期 間，塗佈組成物中之水分被紙基材吸收Κ及黏土、磨细碳 酸評、乳膠、澱粉等成分會滲入紙基材之內部，Μ致紙之 平滑度降低以及塗佈層之厚度變得不均勻，此造成塗佈紙 之可印刷性降低之問題。亦已知塗佈層之表面特性降低主 要是由塗佈組成物缺乏保水性造成。 目前，塗佈組成物通常含有小量高分子材料諸如羧甲基 纖維素（CMC)或海薄i酸納’ W控制I塗佈特性’諸如粘度、 流動性、保水性等，不過當為了抑制保水性降低而增加高 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇X297公釐） 4 (請先閲讀背面之注意事項再填寫本頁) 訂 476835 Α7 Β7 五、發明説明（2 ) 此降 因力 , 產 加生 增而 幅能 大可 被不 度得 粘變 之佈 物塗 成速 組高 佈， 塗果 , 结 時 〇 量低 用降 之也 料性 材動 子流 分其 性 屑 殘 抗 如 諸 性 特。 面免 表遊 之被 紙法 佈無 塗下 被低 之等 到度 得滑 此平 如及 及性 K 刷 , 印 低可 揭 物 取 所Μ成 組 佈 塗 述 上 案 請ΡΊ出 申 I 提 利酸被 專烯曾 本丙者 日用納 如中酸 , 物藻 題成海 問組或 等佈素 此塗維 決面纖 解紙基 了 ，甲 為者羧 示代 取 物 聚 共 酸 烯 丙 基 用物 之成 小 組 物該 成使 組即 佈但 塗， 之性 納動 酸流 藻及 海度 或粘 素 、 維性 纖水 基保 甲良 狻改 用夠 使能 比 ， M下 在量 下 低 之 性 特 面 表 述 上 制 遏 及 Μ 性 水 保 的 分明 充說 到要 得簡 法之 無明 也發 問物 之成 起組 引佈。 所塗因 物之原 成乏之 組缺化 佈之劣 塗性性 面水特 紙保面 用足表 習補之 決分紙 解充佈 為能塗 的種為 目 一 乏 一、 供缺 之提性 明及水 發 Μ 保 本，該 題， 各顏量 行之子 進份分 物組定 成本特 組基及 佈為成 塗做組 面有定 紙含特 之藉有 性可具 水的之 保目率 好述比 良 上 定 有現 一 具發及 於果 Κ 對结 ， 者，劑 明後合 發究粘 本研及 •ft [T 種料 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 ο 為 明樣 發態 本一 成之 完明 酸而發 烯現本 丙發 ， 基該即 甲於亦 之基 成 達 來 物 成 組 佈 塗 之 物 聚 共 酯 乙 酸 烯 丙 粘 料 顔 含 包 其 物 成 組 佈 塗 合劑；κ及甲基丙烯酸-丙烯酸乙酷共聚物，該共聚物中 甲基丙烯酸單元與丙烯酸乙酯單元之莫耳比為5: 95至45 :55Μ及重量平均分子量為900,000至8,000,000;其中甲 基丙烯酸-丙烯酸乙酯共聚物之份数（以重量計）為每100份 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ29?公釐） 經濟部中央標準局員工消費合作社印製 476835 A7 B7 五、發明説明（3 ) (K重量計）顔料有〇·〇1至0.5份（以重量計）。 本發明之另一態樣為一種被塗佈之紙，其中在紙基材之 表面上形成有上述塗佈組成物之塗佈層且固體組份之附著 量為2至30 g/πι2 。 較佳具體例之詳细說明 本發明被詳逑於下。 在本發明之塗佈組成物中，除做為基本成份之顔料及粘 合劑外，尚含有甲基丙烯酸-丙烯酸乙酯共聚物十分重要 。本發明所用之甲基丙烯酸-丙烯酸乙酯共聚物中，甲基 丙烯酸單元與丙烯酸乙酯單元之莫耳比在5: 95至45 : 55 之範圍内。假若甲基丙烯酸單元之比率超過上述範圍，塗 佈組成物在高剪力下之流動性將降低及其B-型粘度將增加 ，假若甲基丙烯酸單元之比率低於上述範圍，保水作用將 變得不充份。當將高剪力下之流動性及保水作用列入考慮 時，甲基丙烯酸單元與丙烯酸乙酯單元之莫耳比較佳在20 :80至40: 60之範圍內。 再者，甲基丙烯酸-丙烯酸乙酯共聚物之重量平均分子 量在900,000至8,000,000之範圍內。若其重量平均分子量 低於9 0 0 , 0 0 0，則無法得到充分之保水性，若其超過 8,000,0 00，則塗佈組成物之粘度變高而不方便。從塗佈 組成物之保水性與粘度之平衡觀點言之，較佳之重量平均 分子量在1,000,000至4，000,000之範圍内。此外，重量平 均分子量為藉透膠層析法（GPC法）測得之被轉換成聚苯乙 烯之值。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29?公釐） 一 6 - (請先閲讀背面之注意事項再填寫本頁)476835 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the Invention (1) The invention of invention! The present invention relates to a paper surface coating composition κ having good water retention and a coated paper having a coating layer on which a coating composition is formed on the surface. BACKGROUND OF THE INVENTION Generally speaking, printing paper has a coating history of a coating composition formed on the surface, and the smoothness and gloss can be improved by improving printability. The coating composition is usually a slurry made by dispersing white pigments such as clay, ground calcium carbonate, etc., and M such as latex, starch, etc. in water; On the surface of the paper substrate, a system is used in which, after the coating composition is diluted to an appropriate concentration, the diluted coating composition is supplied from its preparation tank to the coating machine, and the coating composition is continuously coated. It is spread on the traveling paper, and excessive coating composition is removed by a coating head such as a squeegee to make a desired thickness. The coating composition removed from the coated paper is returned to the preparation tank, mixed with the new coating composition, and reused. After coating on the surface of the paper substrate, the coating composition thus coated is dried to form a coating layer. However, since the moisture in the coating composition is absorbed by the paper substrate during the coating step to the drying step, clay, ground carbonic acid, latex, starch and other components will penetrate into the inside of the paper substrate. The smoothness decreases and the thickness of the coating layer becomes uneven, which causes a problem that the printability of the coated paper is reduced. It is also known that the decrease in the surface characteristics of the coating layer is mainly caused by the lack of water retention of the coating composition. At present, the coating composition usually contains a small amount of high-molecular materials such as carboxymethyl cellulose (CMC) or sea-thin acid sodium 'W control I coating characteristics' such as viscosity, flowability, water retention, etc. Increased water retention decreases and increases the paper size. The Chinese National Standard (CNS) A4 specification (21 × 297 mm) is applicable. 4 (Please read the precautions on the back before filling this page.) Order 476835 Α7 Β7 V. Description of the invention (2) This drop is due to the force, the increase in production and growth can be large, can be coated with cloth that is not too viscous to become a high-speed cloth, coated with fruit, when the amount of 0 is low, it is also expected that the material will move. Sexual crumbs are as resistant as sex. The surface is free of surface travel. The paper is not coated, and the cloth is not coated. It is as low as possible. It is as smooth as possible. The brush can be printed on the surface of the fabric. The acid has been used by those who have been used for daily use, such as sodium acid, and the algae is called Haiwen Group or other cloths. This coating has a fibrillated paper base, and the former is a carboxylic acid. The composition of the group of objects should be the cloth, but the coating, the nature of the acid and the flow of algae and seaweed or mucilin, virile fiber water-based Baojialiangzhu use enough to enable the ratio, the lower the lower the amount of M In terms of sexual characteristics, the deterrent of the containment and the clearness of the soil and water conservation are clearly mentioned in terms of the ignorance of the simple method and the questioning of the matter. The reason for the lack of coating is the poor coating of the cloth, the poor coating properties of the surface water, special paper, and the surface. In this article, the issue of “Protection of Capital” and “Protection of Capital” is guaranteed. In this question, the children of each color line are divided into groups and set into special groups. The cloth is made of coated paper with fixed paper and special borrowings. The eye rate is better than the good ones. There will be a hairpin and a knot in the fruit, or, if the agent is mixed, it will be researched in this research and • ft [T species (please read the precautions on the back before filling this page) Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Ester Acrylic Acrylic Adhesive Contains Included Group Cloth Coating Agent; Kappa and Methacrylic Acid-Ethyl Acrylic Copolymer. The molar ratio of methacrylic acid unit to ethyl acrylate unit is 5: 95. To 45: 55M and weight average molecular weight from 900,000 to 8,000,000; of which methyl The parts (by weight) of enoic acid-ethyl acrylate copolymer are per 100 parts of this paper. The standard of China National Standard (CNS) A4 (210 × 29? Mm) is applicable. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 476835 A7 B7 V. Description of the invention (3) (K weight) The pigment has 0.001 to 0.5 parts (by weight). Another aspect of the present invention is a coated paper in which a coating layer of the above-mentioned coating composition is formed on the surface of a paper substrate and the solid component has an adhesion amount of 2 to 30 g / m 2. Detailed description of preferred specific examples The present invention is detailed below. In the coating composition of the present invention, it is important to contain a methacrylic acid-ethyl acrylate copolymer in addition to the pigments and adhesives as basic ingredients. In the methacrylic acid-ethyl acrylate copolymer used in the present invention, the molar ratio of the methacrylic acid unit to the ethyl acrylate unit is in a range of 5:95 to 45:55. If the ratio of methacrylic units exceeds the above range, the fluidity of the coating composition under high shear force will decrease and its B-type viscosity will increase. If the ratio of methacrylic units is below the above range, the water retention effect will change. Not enough. When the fluidity and water retention under high shear forces are taken into consideration, the molarity of the methacrylic acid unit and the ethyl acrylate unit is better in the range of 20:80 to 40:60. Furthermore, the weight average molecular weight of the methacrylic acid-ethyl acrylate copolymer is in the range of 900,000 to 8,000,000. If the weight-average molecular weight is less than 90,000, sufficient water retention cannot be obtained, and if it exceeds 8,000,00, the viscosity of the coating composition becomes high and inconvenient. From the viewpoint of the balance between water retention and viscosity of the coating composition, the preferred weight average molecular weight is in the range of 1,000,000 to 4,000,000. In addition, the weight-average molecular weight is a value converted to polystyrene by a gel chromatography method (GPC method). This paper size applies to Chinese National Standard (CNS) A4 specification (210X29? Mm) 1 6-(Please read the precautions on the back before filling this page)
、1T ΦΙ. 476835 A7 B7 五、發明説明（4 ) 對於甲基丙烯酸-丙烯酸乙酯共聚物之製法沒有特殊限 制，較佳使用一已知方法，例如在水性介質中之乳液聚合 法。在該場合，使用水溶性聚合啟發劑，例如過氧化氫， 水溶性無機過氧化物，K及水溶性遷原劑與水溶性無機過 氧化物或水溶性有機過氧化物之組合物，做為聚合啟發劑。 水溶性無機過氧化物之例子包括過硫酸鉀及過硫酸銨。 水溶性還原劑之例子包括常被用做水溶性自由基氧化還原 聚合觸媒組份之邋原劑，例如乙二胺四乙酸或其納鹽或鉀 鹽，或者彼等與重金屬諸如鐵、銅及鉻等之錯合化合物； 亞磺酸及其納鹽及鉀鹽；抗壞血酸及其鈉鹽、鉀鹽及鈣鹽 ;焦磷酸鐵；硫酸亞鐵；硫酸銨亞鐵；亞硫酸納；亞硫酸 氫鈉；甲醛次硫酸納；遷原糖等。另一方面，水溶性有機 過氧化物之例子包括氫過氧化茴香素、氫過氧化對-瑞香 烯、氫過氧化第三丁基異丙苯、氫過氧化二異丙苯、氫過 氧化對-薄荷烷、氫過氧化十氫Μ、氫過氧化第三戊基、 氫過氧化第三丁基及氫過氧化異丙基等。 經濟部中央標準局員工消費合作社印製 又，在乳化聚合中，乳化劑被使用，Μ及通常使用陰離 子界面活性劑或者陰離子界面活性劑與非離子界面活性劑 之組合。 陰離子界面活性劑之例子包括在乳化聚合時常使用之陰 離子界面活性劑，例如烷基苯磺酸鹽、烷基磺酸鹽、烷基 磺酸酯鹽、脂肪酸金鼷鹽、聚氧烷基醚磺酸酯鹽、聚氧伸 乙基羧酸酯鹽、聚氧伸乙基烷基苯基醚硫酸酯鹽及琥珀酸 二烷酯磺酸鹽。 7 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X 297公釐） 476835 A7 ___B7_ 五、發明説明（5 ) 非離子界面活性劑之例子包括分子中具有聚氧伸乙基鐽 且具有表面活性作用之化合物，諸如聚氧伸乙基烷基苯基 醚、聚氧伸乙基烷基醚、聚氧伸乙基脂肪酸酯、聚氧伸乙 基花楸醇酐脂肪酸酯、聚氧伸乙基烷基醚甘油硼酸酯、聚 氧伸乙基烧基醚磷酸酯、聚氧伸乙基等；上述化合物中聚 氧伸乙基鏈被羥乙烯與羥丙烯之共聚物取代者；Μ及花楸 醇酐脂肪酸酯、脂肪酸甘油酯、甘油脂肪酸酯、及異戊四 酵脂肪酸酯。 藉著在含有上述聚合啟發劑及乳化劑之水性介質中，於 溫度在30至80 °C之範圍内，Κ 一定之比率聚合甲基丙烯酸 及丙烯酸乙酯，可以得到甲基丙烯酸-丙烯酸乙酯共聚物 之细粒被均勻分散之乳液。乳液可K其本身用於製備酯塗 佈組成物，或者需要時，該共聚物之细粒可藉已知處理方 法，諸如從乳液鹽析或將乳液噴乾等而被收集，並用於製 備紙面塗佈組成物。 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 在本發明之塗佈組成物中，上述甲基丙烯酸-丙烯酸乙 酯共聚物必須與基本成分Μ每100份（M重量計）顔料使用 0.01至0·5份（Μ重量計）之比率配伍。假若該量或比率低 於0 . 0 1份（Κ重董計），則無法得到充分之保水性；假若該 量超過0.5份（Μ重量計），塗佈組成物之粘度變得太高而 發生膠化。從塗佈組成物之保水性及流動性觀之，甲基丙 烯酸-丙烯酸乙酯共聚物之較佳配ίξ量為每100份（Μ重量 計）顔料使用〇·〇5至〇·3份（Μ重量計）。 本發明之紙面塗佈組成物所使用之顏料沒有特殊限制， —本紙張尺度適用中國國家標準（CNS ) Α4規格（21〇X 297公釐) 一 8 _ 經濟部中央標準局員工消費合作社印製 476835 A7 B7 五、發明説明（6 ) 習知紙面塗佈組成物常用之顏料均可被使用。顔料之例子 包括黏土、碳酸鈣、白陶土、滑石粉、氧化钛、氧化矽、 氧化鋅、氫氧化鋁、胭脂虫紅、及合成塑膠顔料。彼等被 單獨或Μ組合形式使用，顔料之配伍量通常為塗佈組成物 總重之40至70重量S；。 本發明之紙面塗佈組成物所使用之粘合劑也沒有特殊限 制，習知紙面塗佈組成物常用之合成或天然高分子物質之 乳膠或溶液皆可被使用。該高分子物質之例子包括苯乙烯 -丁二烯系共聚物、苯乙烯-丙烯酸系共聚物、乙酸乙烯酯 -丙烯酸系共聚物、乙烯-乙酸乙烯酯系共聚物、丁二烯-甲基丙烯酸甲酯系共聚物、乙酸乙烯酯-丙烯酸丁酯系共 聚物、苯乙、燏-順丁烯二酸酐系共聚物、異丁烯一順丁烯 二酸酐系共聚物、丙烯酸-甲基丙烯酸甲酯系共聚物、氧 化澱粉、酯化澱粉、醚化澱粉、經酶改質之澱粉、駱蛋白 及大豆蛋白。彼等被單獨或Κ組合形式使用，粘合劑之配 伍量通常為每100份（Μ重量計）顔料使用3至30份（Κ重量 計），Κ 5至20份（Κ重量計）為較佳。 本發明之紙面塗佈組成物，若需要，可在不減損本發明 之目的下，含有分散劑、增粘劑、消泡劑、防水劑及著色 劑等。 分散劑之例子包括聚丙烯酸納、六偏磷酸納、焦磷酸納 、及丙烯酸-順丁烯二酸系共聚物之納鹽。 本發明之被塗佈紙包含在紙基材之表面上形成有上述塗 佈組成物之塗佈層且固體組份之附著量為2至30g/ni2者， 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 9 (請先閱讀背面之注意事項再填寫本頁) 訂 f 經濟部中央標準局員工消費合作社印製 476835 A7 B7 五、發明説明（7 ) 該紙基材之例子包括無硬粒紙（sol id free paper )、中级 紙及紙板。再者，被塗佈之紙可M藉著使用括刀塗佈器、 輥塗佈器、氣刀塗佈器等Κ 一般之方法在紙基材之一面或 兩面塗佈上述紙面塗佈組成物，然後乾燥。 如上逑，本發明之紙面塗佈組成物具有良好的保水性， Κ及能提供在表面平滑度、可印刷性、抗殘屑性及光澤等 上優異之被塗佈紙。 本發明現參照下列實施例更詳细地說明，但本發明非限 於此等實施例。 此外，在各實施例中，紙面塗佈組成物及被塗佈之紙之 性質藉下列方法測得。 (1) 紙面塗佈組成物之保水性： (Α)保水性藉S&D瓦倫法（S&D Warren method)測定。較 高之值表示較佳之保水性。 (B)被塗佈之顔料進入濾紙之水合量，用滯留計AA-GWR( 商品名，由Kaltec科學公司製造），於塗佈顏料為10 ml， 壓力為1.5巴，加壓時間為15秒及溫度為20 °C之條件下， 藉加壓水合法測定。較低之值表示較佳之保水性。 (2) 紙面塗佈組成物之B型粘度（cps): 於201C之B型粘度依照TAPPI標準T648 Su-72，於轉速為 60 rpni下測定。 (3) 紙面塗佈組成物於高剪力（HS)下之粘度（cps): 於20 °C之高剪力粘度，藉用高剪力粘度計（由日本精工 股份有限公司製造），於轉速為8800 ppm下測定。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） —ι 〇 一 (請先閲讀背面之注意事項再填寫本頁) 訂 争· 476835 A7 B7 五、發明説明（8 ) (4)紙面塗佈組成物之流動性： 塗佈組成物藉離心分離處理分成水相（液相）及固相後， 測定水相之粘度，並依照下列方程式求得於20 10之流動性。 流動性 =A/B A :塗佈組成物之粘度 B :水相之粘度 (5 )塗佈組成物之光澤： 光澤依照JIS P8 1 42-1 965測定。 (6) 被塗佈之紙之光亮度： 光亮度依照JIS P8123-1961測定。 (7) 被塗佈之紙之平滑度： 平滑度依照J IS P8 1 1 9-1 976測定。 (8) 被塗佈之紙之乾殘屑及溼殘屑： 在被塗佈紙之表面用RI印刷機（商品名，由Akira Seisakusho股份有限公司）施行印刷，觀察所產生之殘屑 * Μ及用5-點計分法評估殘屑（值越大越佳）。 (9) 被塗佈之紙之照相版光點像缺失試驗： 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 照相版光點像缺失用印刷所型照相印刷品質測試機（由 ，Kumagaya Riki Kogyo股份有限公司製造，產品編號 8608189)測定。較小之值表示照相版光點之缺失較少。 實施例1 K重量計，將70份黏土，30份磨细之碳酸鈣，10份之苯 乙烯-丁二烯共聚物乳膠，3份之氧化澱粉，與0.1份（M固 體計）分散劑（SDA-40K，商品名，由索瑀雨公司製造）混合後1T Φ I. 476835 A7 B7 V. Description of the invention (4) There is no particular limitation on the method for preparing the methacrylic acid-ethyl acrylate copolymer. A known method such as emulsion polymerization in an aqueous medium is preferably used. In this case, a water-soluble polymerization initiator such as hydrogen peroxide, water-soluble inorganic peroxide, K and a water-soluble migration agent and a combination of water-soluble inorganic peroxide or water-soluble organic peroxide is used as Polymerization Heuristic. Examples of the water-soluble inorganic peroxide include potassium persulfate and ammonium persulfate. Examples of water-soluble reducing agents include rhenium agents often used as water-soluble free-radical redox polymerization catalyst components, such as ethylenediaminetetraacetic acid or its sodium or potassium salts, or both with heavy metals such as iron and copper And chromium and other complex compounds; sulfinic acid and its sodium and potassium salts; ascorbic acid and its sodium, potassium and calcium salts; iron pyrophosphate; ferrous sulfate; ferrous ammonium sulfate; sodium sulfite; Sodium hydrogen; sodium formaldehyde sulfoxylate; On the other hand, examples of the water-soluble organic peroxide include anisin hydroperoxide, p-rumene hydroperoxide, third butyl cumene hydroperoxide, dicumene hydroperoxide, and hydroperoxide pair. -Mentane, decahydroperoxide M, third pentyl hydroperoxide, third butyl hydroperoxide, isopropyl hydroperoxide, and the like. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. In emulsification polymerization, emulsifiers are used. M and anionic surfactants or a combination of anionic surfactants and nonionic surfactants are usually used. Examples of anionic surfactants include anionic surfactants commonly used in emulsion polymerization, such as alkylbenzenesulfonates, alkylsulfonates, alkylsulfonate salts, fatty acid phosphonium salts, polyoxyalkyl ether sulfonates Acid salt, polyoxyethyl carboxylate, polyoxyethyl alkyl phenyl ether sulfate and dialkyl succinate sulfonate. 7 (Please read the precautions on the back before filling this page) The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) 476835 A7 ___B7_ 5. Description of the invention (5) Examples of non-ionic surfactants include Compounds with polyoxyethylene ethylamidine in the molecule and having surface-active effects, such as polyoxyethylene ethylphenylphenyl ether, polyoxyethyl ether, polyoxyethyl fatty acid ester, polyoxyethylene Ethyl anisocyanate fatty acid ester, polyoxyethyl ether ether glyceryl borate, polyoxyethyl ethyl ether ether phosphate, polyoxyethylene etc .; polyoxyethylene chain in the above compounds Those who are replaced by copolymers of hydroxyethylene and hydroxypropylene; M and anthocyanin anhydride fatty acid esters, fatty acid glycerides, glycerol fatty acid esters, and isoamylase fatty acid esters. By polymerizing methacrylic acid and ethyl acrylate in a certain ratio of K in an aqueous medium containing the above-mentioned polymerization initiator and emulsifier at a temperature ranging from 30 to 80 ° C, methacrylic acid-ethyl acrylate can be obtained Emulsion in which the fine particles of the copolymer are uniformly dispersed. The emulsion can be used by itself to prepare an ester coating composition, or fine particles of the copolymer can be collected by known processing methods such as salting out of the emulsion or spraying the emulsion dry, etc., if necessary, and used to prepare paper Coating composition. Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) In the coating composition of the present invention, the above methacrylic acid-ethyl acrylate copolymer must be added with the basic ingredient M every 100 Parts (M by weight) of the pigment are used in a ratio of 0.01 to 0.5 parts by weight (M by weight). If the amount or ratio is less than 0.01 part (based on K weight basis), sufficient water retention cannot be obtained; if the amount exceeds 0.5 part (by weight), the viscosity of the coating composition becomes too high and Gelation occurs. From the viewpoint of water-retaining property and fluidity of the coating composition, the preferred compounding amount of the methacrylic acid-ethyl acrylate copolymer is from 0.05 to 0.3 parts per 100 parts by weight of the pigment ( M by weight). There are no special restrictions on the pigments used in the paper surface coating composition of the present invention. — This paper size applies the Chinese National Standard (CNS) A4 specification (21 × X 297 mm). 8 _ Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 476835 A7 B7 V. Description of the Invention (6) Conventional pigments commonly used in paper coating compositions can be used. Examples of pigments include clay, calcium carbonate, white clay, talc, titanium oxide, silicon oxide, zinc oxide, aluminum hydroxide, cochineal, and synthetic plastic pigments. They are used singly or in combination, and the pigment is usually used in an amount of 40 to 70% by weight based on the total weight of the coating composition; The binder used in the paper coating composition of the present invention is also not particularly limited, and conventional latexes or solutions of synthetic or natural polymer materials commonly used in paper coating compositions can be used. Examples of the polymer substance include a styrene-butadiene copolymer, a styrene-acrylic copolymer, a vinyl acetate-acrylic copolymer, an ethylene-vinyl acetate copolymer, butadiene-methacrylic acid Methyl ester-based copolymer, vinyl acetate-butyl acrylate-based copolymer, styrene, fluorene-maleic anhydride-based copolymer, isobutylene-maleic anhydride-based copolymer, acrylic acid-methyl methacrylate Copolymers, oxidized starches, esterified starches, etherified starches, enzyme-modified starches, camel protein, and soy protein. They are used alone or in combination with κ. The compatibility of the binder is usually 3 to 30 parts (K weight) per 100 parts (M by weight) of pigment, and KK 5 to 20 parts (K by weight) is more good. The paper surface coating composition of the present invention may contain, if necessary, a dispersant, a tackifier, a defoaming agent, a waterproofing agent, a coloring agent, and the like without detracting from the purpose of the present invention. Examples of the dispersant include sodium polyacrylate, sodium hexametaphosphate, sodium pyrophosphate, and sodium salts of an acrylic-maleic acid-based copolymer. The coated paper of the present invention includes a coating layer on which the coating composition described above is formed on the surface of the paper substrate and the solid component adhesion amount is 2 to 30 g / ni2. The paper size is applicable to the Chinese National Standard (CNS ) A4 size (210X 297mm) 9 (Please read the precautions on the back before filling out this page) Order f Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 476835 A7 B7 V. Description of the invention (7) Examples include sol id free paper, intermediate paper, and cardboard. In addition, the coated paper can be coated on one or both sides of the paper substrate by using a general method such as a knife coater, a roll coater, and an air knife coater. And then dry. As described above, the paper surface coating composition of the present invention has good water-retaining properties, and can provide coated paper excellent in surface smoothness, printability, anti-residue property, and gloss. The present invention will now be described in more detail with reference to the following examples, but the present invention is not limited to these examples. In addition, in each Example, the properties of the paper surface coating composition and the coated paper were measured by the following methods. (1) Water retention of paper surface coating composition: (Α) Water retention is measured by S & D Warren method. Higher values indicate better water retention. (B) The amount of hydration of the coated pigment into the filter paper, using a retention meter AA-GWR (trade name, manufactured by Kaltec Scientific Corporation), the coating pigment is 10 ml, the pressure is 1.5 bar, and the pressing time is 15 seconds And at a temperature of 20 ° C, it is determined by pressurized water. Lower values indicate better water retention. (2) Type B viscosity (cps) of the paper surface coating composition: Type B viscosity at 201C is measured in accordance with TAPPI standard T648 Su-72 at a speed of 60 rpni. (3) Viscosity (cps) of paper coating composition under high shear (HS): High shear viscosity at 20 ° C, borrowed from high shear viscometer (manufactured by Seiko Co., Ltd.), at Measured at 8800 ppm. This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) — ι〇1 (Please read the precautions on the back before filling out this page) Contest · 476835 A7 B7 V. Description of Invention (8) (4) Flowability of the coating composition on paper: After the coating composition is separated into an aqueous phase (liquid phase) and a solid phase by centrifugation, the viscosity of the aqueous phase is measured, and the fluidity at 20 10 is obtained according to the following equation. Flowability = A / B A: Viscosity of the coating composition B: Viscosity of the aqueous phase (5) Gloss of the coating composition: The gloss is measured in accordance with JIS P8 1 42-1 965. (6) Brightness of coated paper: Brightness is measured in accordance with JIS P8123-1961. (7) Smoothness of coated paper: Smoothness is measured according to J IS P8 1 1 9-1 976. (8) Dry and wet debris of the coated paper: The surface of the coated paper was printed with an RI printer (trade name, Akira Seisakusho Co., Ltd.), and the resulting debris was observed * Μ And use the 5-point scoring method to assess debris (the larger the value, the better). (9) Test of lack of light dot image on coated paper: Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling in this page). The printing quality tester (manufactured by Kumagaya Riki Kogyo Co., Ltd., product number 8608189) was measured. Smaller values indicate fewer missing spots on the photographic plate. Example 1 Based on K, 70 parts of clay, 30 parts of ground calcium carbonate, 10 parts of styrene-butadiene copolymer latex, 3 parts of oxidized starch, and 0.1 part (M solid basis) of a dispersant ( SDA-40K, trade name, manufactured by Suoyu Yu)
本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -1 J~I 476835 A7 B7 五、發明説明（9 ) ，將水加入混合物中Μ使全部混合物中固體成分之湄度變 為62¾，之後，甲基丙烯酸-丙烯酸乙酯共聚物之乳液（固 體成份占35.3重量》：，2〇1〇之粘度為541^3.5，以及平均粒 度為71 rim)，M0.2份（根據固體成分，即共聚物之重量計 算）之量被加到混合物中，該共聚物中甲基丙烯酸單元與 丙烯酸乙酯單元之莫耳比為39: 61M及重量平均分子量為 3,000,00 0，繼而均勻混合Μ提供紙面塗佈組成物。其性 質被示於下表1中。此外，重量平均分子量為藉GPC法測定 之被轉換成苯乙烯之值。 然後將製得之紙面塗佈組成物塗佈在道林紙（基重60 g/m2 )之一表面上並乾燥，Μ提供被塗佈之紙，塗佈之量 為能使固體成分之附著量為15 g/m2者。被塗佈之紙之性 質被示於下表1中。 比較例1 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 遵循與實施例1相同之步驟，不過用甲基丙烯酸-丙烯酸 乙酯共聚物乳液（固體成份占35.0重量％，20¾之粘度為 125fflPa.s，K及平均粒度為65 ηιπ)中甲基丙烯酸單元與丙 烯酸乙酯單元之莫耳比為60: 40 Μ及重量平均分子量為 ,500,000者取代實施例1使用之甲基丙烯酸-丙烯酸乙酯共 聚物之乳液，而製備紙面塗佈組成物，以及用該紙面塗佈 組成物製備被塗佈之紙。紙面塗佈組成物及被塗佈之紙之 性質被示於下表1中。 比較例2 遵循與實施例1相同之步驟，不過用甲基丙烯酸-丙烯酸 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） 一 12 - 476835 A7 B7 五、發明説明（l〇 ) 乙酯共聚物乳液（固體成份占35.0重量！K，20¾之粘度為 86mPa.S，Μ及平均粒度為68 na)中甲基丙烯酸單元與丙 烯酸乙酯單元之莫耳比為50 : 50 Μ及重量平均分子量為 3,0 0 0,000者取代實施例1使用之甲基丙烯酸-丙烯酸乙酯 共聚物之乳液，而製備紙面塗佈組成物，Κ及用該紙面塗 佈組成物製備被塗佈之紙。紙面塗佈組成物及被塗佈之紙 之性質被示於下表1中。 比較例3 遵循與實施例1相同之步驟，不過用甲基丙烯酸-丙烯酸 乙酯共聚物乳液（固體成份占35.2重量S：，20¾之粘度為30 raPa.S，M及平均粒度為65 ηπι)中甲基丙烯酸單元與丙烯 酸乙酯單元之莫耳比為39 : 61 Μ及重量平均分子量為 70,000者取代實施例1使用之甲基丙烯酸-丙烯酸乙酯共聚 物之乳液，而製備紙面塗佈組成物，Μ及用該紙面塗佈組 成物製備被塗佈之紙。紙面塗佈組成物及被塗佈之紙之性 質被示於下表1中。 (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) Α4規格（210 X 297公釐） - 13 - 476835 A7 B7 五、發明説明（U ) 經濟部中央標準局員工消費合作社印製 表1 實施例1 比較例1 比較例2 比較例3 塗佈組成物 之性質 縣性 (秒)㈧ 53 45 46 46 保水性 (g/m2)(B) 45.4 62.2 53.3 49.3 B型粘度 (cps) 2800 3500 2000 2100 HS粘度 (cps) 31.9 35.8 32.8 33.4 流動性 182 533 418 363 被塗佈之紙 之性質 光澤 57.6 52.2 53.7 .54.0 光亮度 75.3 75.3 75.2 75.3 平滑度(秒) 420 370 390 400 乾殘屑 3.1 2.9 3.0 3.0 溼殘屑 3.1 2.9 3.0 3.0 (請先閱讀背面之注意事項再填寫本頁)This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) -1 J ~ I 476835 A7 B7 V. Description of the invention (9), water is added to the mixture to make the solid content of all mixtures change. It is 62¾, after that, the emulsion of methacrylic acid-ethyl acrylate copolymer (solid content accounts for 35.3% by weight :, the viscosity of 2010 is 541 ^ 3.5, and the average particle size is 71 rim), M0.2 parts (according to The solid content, calculated as the weight of the copolymer, was added to the mixture. The molar ratio of the methacrylic acid unit to the ethyl acrylate unit in the copolymer was 39: 61M, and the weight average molecular weight was 3,000,000. Mixing M uniformly provides a paper coating composition. Its properties are shown in Table 1 below. In addition, the weight average molecular weight is a value converted to styrene by the GPC method. Then, the obtained paper surface coating composition is coated on one surface of a Dowling paper (base weight 60 g / m2) and dried, and the coated paper is provided in an amount so that solid components can adhere. The amount is 15 g / m2. The properties of the coated paper are shown in Table 1 below. Comparative Example 1 Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) Follow the same procedure as in Example 1, but using a methacrylic acid-ethyl acrylate copolymer emulsion (solid content It accounts for 35.0% by weight, the viscosity of 20¾ is 125fflPa.s, K and the average particle size is 65 η). The molar ratio of the methacrylic acid unit to the ethyl acrylate unit is 60: 40 Μ and the weight average molecular weight is 500,000. In Example 1, an emulsion of a methacrylic acid-ethyl acrylate copolymer was used to prepare a paper surface coating composition, and the paper surface coating composition was used to prepare a coated paper. The properties of the paper surface coating composition and the coated paper are shown in Table 1 below. Comparative Example 2 Followed the same steps as in Example 1, except that the methacrylic acid-acrylic paper size was applied to the Chinese National Standard (CNS) A4 (210X297 mm)-12-476835 A7 B7 V. Description of the invention (l) Ethyl copolymer emulsion (solid content accounts for 35.0 weight! K, 20¾ viscosity of 86mPa.S, M and average particle size of 68 na) The molar ratio of methacrylic acid unit to ethyl acrylate unit is 50:50 M and A weight average molecular weight of 3,0 0,000 was substituted for the emulsion of the methacrylic acid-ethyl acrylate copolymer used in Example 1 to prepare a paper surface coating composition, and K was used to prepare the coated surface coating composition. paper. The properties of the paper surface coating composition and the coated paper are shown in Table 1 below. Comparative Example 3 The same procedure as in Example 1 was followed, except that a methacrylic acid-ethyl acrylate copolymer emulsion was used (solid content accounts for 35.2 weight S :, 20¾ viscosity is 30 raPa.S, M, and average particle size is 65 ηπ) The molar ratio of the middle methacrylic acid unit to the ethyl acrylate unit is 39: 61 M and the weight average molecular weight is 70,000. The emulsion of the methacrylic acid-ethyl acrylate copolymer used in Example 1 was replaced to prepare a paper surface coating composition. Material, M, and the paper surface coating composition to prepare a coated paper. The properties of the paper surface coating composition and the coated paper are shown in Table 1 below. (Please read the precautions on the back before filling out this page) Order the paper printed by the Central Consumers Bureau of the Ministry of Economic Affairs, Consumer Cooperatives. The paper size applies to Chinese National Standards (CNS) Α4 specifications (210 X 297 mm)-13-476835 A7 B7 5 Description of the invention (U) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economy Table 1 Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Properties of the coating composition (second) ㈧ 53 45 46 46 Water retention (g / m2) (B) 45.4 62.2 53.3 49.3 Type B viscosity (cps) 2800 3500 2000 2100 HS viscosity (cps) 31.9 35.8 32.8 33.4 Flowability 182 533 418 363 Properties of coated paper gloss 57.6 52.2 53.7 .54.0 brightness 75.3 75.3 75.2 75.3 Smoothness (seconds) 420 370 390 400 Dry debris 3.1 2.9 3.0 3.0 Wet debris 3.1 2.9 3.0 3.0 (Please read the precautions on the back before filling this page)
、1T 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） —14- 經濟部中央標準局員工消費合作社印製 476835 A 7 B7 五、發明説明（12) 從上表清楚可見，本發明之紙面塗佈組成物與比較例之 结果相較，保水性優異。 再者，用本發明之紙面塗佈組成物製備之被塗佈紙，與 用比較例得到之紙面塗佈組成物製得之被塗佈紙相較，在 光澤、光亮度及平滑度上具有較佳平衡。 實施例2 K重量計，將80份黏土，20份磨细之碳酸鈣，6份之苯 乙烯-丁二烯共聚物乳膠（以固體成分計），與0.3份（K固 體成分計）分散劑（SDA-40K，商品名，由索瑪羅么司製造）混 合後，將水加入混合物中以使全部混合物中固體成分之濃 度變為6 4¾，之後，甲基丙烯酸-丙烯酸乙酯共聚物之乳液 (固體成份占35.3重量3；，20°(：之粘度為5411^3.8，以及平 均粒度為71 nm)，M0, 2份（根據固體成分，即共聚物之重 量計算）之量被加到混合物中，該共聚物中甲基丙烯酸單 元與丙烯酸乙酯單元之莫耳比為39: 61M及重量平均分子 量為3,000,000，繼而均勻混合Μ提供紙面塗佈組成物。 其性質被示於下表2中。此外，重量平均分子量為藉GPC法 測定之被轉換成苯乙烯之值。 然後將製得之紙面塗佈組成物塗佈在道林紙（基重60 g/m2 )之一表面上並乾燥，Μ提供被塗佈之紙，塗佈之量 為能使固體成分之附著量為15 g/πι2者。被塗佈之紙之性 質被示於下表2中。 比較例4 遵循與實胞例2相同之步驟，不過用甲基丙烯酸-丙烯酸 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 一 15 - (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消費合作社印製 476835 A7 B7 五、發明説明（13 ) 乙酯共聚物乳液（固體成份占35.0重量％，201C之粘度為 125mPa.s，Μ及平均粒度為65 nm)中甲基丙烯酸單元與丙 烯酸乙酯單元之莫耳比為60: 40 Μ及重量平均分子量為 2,500,000者取代實施例2使用之甲基丙烯酸-丙烯酸乙酯 共聚物之乳液，而製備紙面塗佈組成物，以及用該紙面塗 佈組成物製備被塗佈之紙。紙面塗佈組成物及被塗佈之紙 之性質被示於下表2中。 比較例5 遵循與實施例2相同之步驟，不過用甲基丙烯酸-丙烯酸 乙酯共聚物乳液（固體成份占35.0重量》：，201C之粘度為 86mPa.S，K及平均粒度為68 nm)中甲基丙烯酸單元與丙 烯酸乙酯單元之莫耳比為50: 50以及重量平均分子量為 3,000, 000者取代實施例2使用之甲基丙烯酸-丙烯酸乙酯 共聚物之乳液，而製備紙面塗佈組成物，Μ及用該紙面塗 佈組成物製備被塗佈之紙。紙面塗佈組成物及被塗佈之紙 之性質被示於下表2中。 比較例6 遵循與實施例2相同之步驟，不過用甲基丙烯酸-丙烯酸 乙酯共聚物乳液（固體成份占35.2重量ίϋ，20 °C之粘度為30 mPa.S，K及平均粒度為65 nm)中甲基丙烯酸單元與丙烯 酸乙酯單元之莫耳比為39 : 6 1M及重量平均分子量為 70,000者取代實施例2使用之甲基丙烯酸-丙烯酸乙酯共聚 物之乳液，而製備紙面塗佈組成物，Μ及用該紙面塗佈組 成物製備被塗佈之紙。紙面塗佈組成物及被塗佈之紙之性， 1T This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) —14- Printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 476835 A 7 B7 V. Description of the invention (12) It is clear from the above table, Compared with the result of a comparative example, the paper surface coating composition of this invention is excellent in water retention. Furthermore, the coated paper prepared by using the paper surface coating composition of the present invention has gloss, brightness, and smoothness compared with the coated paper prepared by the paper surface coating composition obtained in the comparative example. Better balance. Example 2 Based on K weight, 80 parts of clay, 20 parts of ground calcium carbonate, 6 parts of styrene-butadiene copolymer latex (based on solid content), and 0.3 parts (K solid content) of dispersant (SDA-40K, trade name, manufactured by Somalomax) After mixing, water is added to the mixture so that the concentration of the solid content in the entire mixture becomes 6 4¾, and then the methacrylic acid-ethyl acrylate copolymer Emulsion (solid content accounts for 35.3 weight 3 ;, 20 ° (: viscosity of 5411 ^ 3.8, and average particle size of 71 nm), M0, 2 parts (based on the solid content, that is, the weight of the copolymer) was added to In the mixture, the molar ratio of the methacrylic acid unit to the ethyl acrylate unit in the copolymer was 39: 61 M and the weight average molecular weight was 3,000,000, and then uniformly mixed to provide a paper coating composition. The properties are shown in Table 2 below. In addition, the weight-average molecular weight is the value converted to styrene by GPC method. Then, the prepared paper coating composition was coated on one surface of Dowling Paper (base weight 60 g / m2) and Dry, M provides coated paper, coated In order to make the solid content adhesion amount 15 g / πι2. The properties of the coated paper are shown in Table 2 below. Comparative Example 4 The same procedure as in Cell Example 2 was followed, except that methacrylic acid-acrylic acid was used This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm). 1 15-(Please read the precautions on the back before filling out this page.) Order Printed by the Consumers Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 476835 A7 B7 V. Invention Note (13) The molar ratio of the methacrylic acid unit to the ethyl acrylate unit in the ethyl ester copolymer emulsion (solid content accounts for 35.0% by weight, 201C viscosity is 125 mPa.s, M, and average particle size is 65 nm) is 60: 40 M and a weight average molecular weight of 2,500,000 replaced the emulsion of the methacrylic acid-ethyl acrylate copolymer used in Example 2 to prepare a paper surface coating composition, and the paper surface coating composition was used to prepare a coated paper. The properties of the paper surface coating composition and the coated paper are shown in Table 2 below. Comparative Example 5 The same procedure as in Example 2 was followed, except that a methacrylic acid-ethyl acrylate copolymer emulsion (solid content "35.0 weight": 201C viscosity is 86mPa.S, K and average particle size is 68 nm) The molar ratio of methacrylic acid unit to ethyl acrylate unit is 50:50 and the weight average molecular weight is 3,000,000. The emulsion of methacrylic acid-ethyl acrylate copolymer was used in Example 2 to prepare a paper surface coating composition, and M and the paper surface coating composition were used to prepare a coated paper. The paper surface coating composition and the coated The properties of the paper are shown in the following Table 2. Comparative Example 6 The same procedure as in Example 2 was followed, except that a methacrylic acid-ethyl acrylate copolymer emulsion (solid content 35.2 wt%) was used, and the viscosity at 20 ° C was 30. mPa.S, K and average particle size 65 nm) The molar ratio of the methacrylic acid unit to the ethyl acrylate unit is 39: 6 1M and the weight average molecular weight is 70,000 instead of the methacrylic acid-ethyl acrylate used in Example 2. An emulsion of an ester copolymer is used to prepare a paper surface coating composition, and the paper surface coating composition is used to prepare a coated paper. Paper coating composition and properties of coated paper
本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） _ i R (請先閱讀背面之注意事項再填寫本頁) 、1Τ •1 476835 A7 B7 五、發明説明（U ) 質被示於下表2中。 表2 經濟部中央標準局員工消費合作社印製 實施例2 比較例4 比較例5 比較例6 塗佈組成物 之性質 保水性 (秒 ΚΑ) 42 35 38 38 細生 (g/m2)(B) 52.8 70.2 60.6 55.9 B型粘度 (cps) 2400 2800 1900 2000 HS粘度 (cps) 31.1 33.5 32.2 32.4 流動佳 156 430 395 344 被塗佈之紙 之性質 光澤 73.7 70.6 71.1 72.8 光亮度 73.2 73.1 73.2 73.2 平滑度(秒） 1273 1100 1180 1220 光點像缺失* (20%光點像) 15 62 30 32 光點像缺失* (10%光點像) 35 105 67 58 (請先閲讀背面之注意事項再填寫本頁)This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) _ i R (Please read the precautions on the back before filling this page), 1T • 1 476835 A7 B7 5. The description of the invention (U) In Table 2 below. Table 2 Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Example 2 Comparative Example 4 Comparative Example 5 Comparative Example 6 Properties of the coating composition Water retention (sec. ΚA) 42 35 38 38 Fine (g / m2) (B) 52.8 70.2 60.6 55.9 Type B viscosity (cps) 2400 2800 1900 2000 HS viscosity (cps) 31.1 33.5 32.2 32.4 Good flow 156 430 395 344 Properties of coated paper 73.7 70.6 71.1 72.8 Brightness 73.2 73.1 73.2 73.2 Smoothness ( Second) 1273 1100 1180 1220 Missing light point image * (20% light point image) 15 62 30 32 Missing light point image * (10% light point image) 35 105 67 58 (Please read the precautions on the back before filling out this page )
、1T Φ». 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） 17 476835 A7 B7 五、發明説明（l5 ) 印刷版光點像之光點像缺失。 從上表清楚可見，本發明之紙面塗佈組成物與比較例所 製得者相較，保水性儍異。Μ及當用本發明之紙面塗佈組 成物製得之被塗佈紙用於照相印刷時，光點像缺失較少。 (請先閱讀背面之注意事項再填寫本頁), 1T Φ ». This paper size is in accordance with Chinese National Standard (CNS) A4 specification (210 × 297 mm) 17 476835 A7 B7 5. Description of the invention (l5) The light spot image of the light spot image of the printing plate is missing. It is clear from the above table that the water-repellent coating composition of the present invention has a staggering water-retaining property compared with those obtained in the comparative examples. M and when the coated paper obtained by using the paper surface coating composition of the present invention is used for photographic printing, the light spot image is less missing. (Please read the notes on the back before filling this page)
、1T 經濟部中央標準局負工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X 297公釐） —i g 一， 1T Printed by the Consumer Standards Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs This paper size applies to the Chinese National Standard (CNS) Α4 specification (210X 297 mm) —i g a