JPH03124899A - Paper-coating liquid and coated paper - Google Patents
Paper-coating liquid and coated paperInfo
- Publication number
- JPH03124899A JPH03124899A JP26306289A JP26306289A JPH03124899A JP H03124899 A JPH03124899 A JP H03124899A JP 26306289 A JP26306289 A JP 26306289A JP 26306289 A JP26306289 A JP 26306289A JP H03124899 A JPH03124899 A JP H03124899A
- Authority
- JP
- Japan
- Prior art keywords
- coating liquid
- paper
- pigment
- pts
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 60
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- 239000007788 liquid Substances 0.000 title claims abstract description 36
- 239000000049 pigment Substances 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 238000007127 saponification reaction Methods 0.000 claims abstract description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 125000000129 anionic group Chemical group 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 6
- 239000004927 clay Substances 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 abstract description 2
- 239000000123 paper Substances 0.000 description 21
- 206010016807 Fluid retention Diseases 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 5
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000661 sodium alginate Substances 0.000 description 3
- 235000010413 sodium alginate Nutrition 0.000 description 3
- 229940005550 sodium alginate Drugs 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000001254 oxidized starch Substances 0.000 description 2
- 235000013808 oxidized starch Nutrition 0.000 description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 108010073771 Soybean Proteins Proteins 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphonic acid group Chemical group P(O)(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 235000019710 soybean protein Nutrition 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は、紙塗工液及びそれを塗工した塗工紙に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a paper coating solution and coated paper coated with the same.
（従来技術及びその問題点）
従来、紙の平滑性、光沢、印刷適性等を改善するために
、白色顔料（カオリン等）及びバインダーに水を添加し
てなるスラリー状の塗工液を紙に塗工することはよく知
られている。この場合、その塗工方法としては、調整タ
ンクからの塗工液をコーティングヘッドに供給して走行
中の紙に塗工し、紙上の過剰の塗工液はブレードで取除
いて前記タンクに戻し、新しい塗工液に混合して再び塗
工に使用するという塗工液の循環使用方式が広く採用さ
れている。(Prior art and its problems) Conventionally, in order to improve the smoothness, gloss, printability, etc. of paper, a slurry-like coating liquid made by adding water to a white pigment (such as kaolin) and a binder was applied to paper. Coating is well known. In this case, the coating method is to supply the coating liquid from the adjustment tank to the coating head and coat it on the running paper, and remove the excess coating liquid on the paper with a blade and return it to the tank. A method of recycling the coating liquid, in which the coating liquid is mixed with a new coating liquid and used again for coating, is widely adopted.
ところで、前記のような紙塗工液としては、例えば、ク
レイ、重質炭酸カルシウム、ラテックス、酸化デン粉及
び分散剤からなるものが一般的に用いられている。そし
て、このような塗工液には、塗工液の粘度、流動性及び
保水性等の性状を調節するために、アルギン酸ソーダや
、ＣＭＣ（カルボキシメチルセルロース）等の高分子物
質が塗工液添加剤として少量添加される。By the way, as the above-mentioned paper coating liquid, for example, one consisting of clay, heavy calcium carbonate, latex, oxidized starch, and a dispersant is generally used. In order to adjust properties such as viscosity, fluidity, and water retention of the coating solution, polymeric substances such as sodium alginate and CMC (carboxymethyl cellulose) are added to the coating solution. It is added in small amounts as an agent.
しかし、このような目的に従来用いられている高分子物
質は、いずれも未だ満足し得るものではなかった０例え
ば、アルギン酸ソーダやＣＭＣの場合、保水性を高める
に十分な量を添加すると、塗工液の粘度が著しく高くな
るとともに、塗工液の流動性も著しく悪化するという欠
点がある。塗工液の流動性が悪化すると、高速塗工が困
難になり、塗工の経済性が著しく損われる。一方、アル
ギン酸ソーダやＣＭＣを塗工液の粘度が適切となるよう
な量で使用した場合、塗工液の保水性が不十分となり、
得られる塗工液の耐ピツキング性、印刷適性、平滑性等
の表面特性は低下する。However, none of the polymer substances conventionally used for this purpose have yet been satisfactory. For example, in the case of sodium alginate and CMC, when added in a sufficient amount to increase water retention, This method has the drawback that the viscosity of the coating solution increases significantly and the fluidity of the coating solution also deteriorates significantly. When the fluidity of the coating liquid deteriorates, high-speed coating becomes difficult and the economical efficiency of coating is significantly impaired. On the other hand, if sodium alginate or CMC is used in an amount that makes the viscosity of the coating solution appropriate, the water retention of the coating solution will be insufficient.
The surface properties of the resulting coating solution, such as picking resistance, printability, and smoothness, are reduced.
（発明の課題）
本発明は、従来の塗工液に見られる前記欠点を克服し、
保水性、粘度、流動性等の性状にすぐれた塗工液及びそ
れを塗工した塗工紙を提供することをその課題とする。(Problems to be solved by the invention) The present invention overcomes the above-mentioned drawbacks found in conventional coating liquids, and
The object of the present invention is to provide a coating liquid with excellent properties such as water retention, viscosity, and fluidity, and coated paper coated with the coating liquid.
（課題を解決するための手段）
本発明者らは、前記課題を解決すべく種々研究を重ねた
結果、特定のポリビニルアルコール系化合物を添加剤と
して用いる時に、保水性にすぐれるとともに、流動性に
もすぐれた塗工液が得られることを見出し、本発明を完
全するに至った。(Means for Solving the Problems) As a result of various studies to solve the above problems, the present inventors have found that when using a specific polyvinyl alcohol compound as an additive, it has excellent water retention and fluidity. They have discovered that an excellent coating solution can be obtained, and have completed the present invention.
すなわち１本発明によれば、顔料とバインダーから成る
塗工液に９、平均重合度が３０〜７０００であって、ケ
ン化度３０〜１００モル％、アニオン化変性度０．５〜
２０モル％の水溶性アニオン化変性ポリビニルアルコー
ルを該顔料１００重量部に対してｏ、ｏｏｉ〜２重量部
の割合で含有させたことを特徴とする紙塗工液及びそれ
を表面塗工した塗工紙が提供される。That is, according to the present invention, a coating liquid consisting of a pigment and a binder has an average degree of polymerization of 30 to 7,000, a degree of saponification of 30 to 100 mol%, and a degree of anionic modification of 0.5 to 7,000.
A paper coating solution containing 20 mol% of water-soluble anionized modified polyvinyl alcohol at a ratio of o, ooi to 2 parts by weight based on 100 parts by weight of the pigment, and a coating coated with the same on the surface. Construction paper will be provided.
本発明においては、塗工液添加剤として、水溶性アニオ
ン化変性ポリビニルアルコールを用いる。In the present invention, water-soluble anionized modified polyvinyl alcohol is used as a coating liquid additive.
このものは、酢酸ビニルとアニオン性単量体との共重合
体をケン化することによって得ることができる。アニオ
ン性単量体のアニオン基としては、スルホン酸基、カル
ボン酸店、ホスホン酸基等が挙げられる。本発明で用い
る水溶性アニオン化変性ポリビニルアルコールにおいて
、そのケン化度は３０〜１００モル％であり、アニオン
化変性度は０．５〜２０モル％である。また、その平均
重合度は３０〜７０００゜好ましくは１００〜６０００
の範囲である。This product can be obtained by saponifying a copolymer of vinyl acetate and an anionic monomer. Examples of the anionic group of the anionic monomer include a sulfonic acid group, a carboxylic acid group, and a phosphonic acid group. In the water-soluble anionized modified polyvinyl alcohol used in the present invention, the degree of saponification is 30 to 100 mol%, and the degree of anionized modification is 0.5 to 20 mol%. Moreover, the average degree of polymerization is 30 to 7000°, preferably 100 to 6000°.
is within the range of
本発明の紙塗工液においては、前記水溶性アニオン化変
性ポリビニルアルコ−は、顔料１００重量部に対して、
０．００１〜２重量部の範囲で用いるこが重要である。In the paper coating liquid of the present invention, the water-soluble anionized modified polyvinyl alcohol contains 100 parts by weight of the pigment.
It is important to use it in a range of 0.001 to 2 parts by weight.
０．００１重量部未満では本発明の目的を十分達成する
ことは困難となり、一方、２重量部を超えて使用すると
塗工液の粘性が高くなり過ぎ、ゲル化を生じる。If the amount is less than 0.001 part by weight, it will be difficult to fully achieve the object of the present invention, while if it is used in excess of 2 parts by weight, the viscosity of the coating solution will become too high and gelation will occur.
顔料としては、慣用のものが任意に使用でき、例えば、
クレイ、炭酸カルシウム、カオリン、タルク、酸化チタ
ン、シリカ、酸化亜鉛、水酸化アルミニウム、白土、レ
ーキ、合成プラスチック顔料等が単独もしくは混合物の
形で用いられる。顔料は塗工液ｉｏｏ重量部に対し通常
４０−７０重量部の割合で用いられる。Any conventional pigment can be used as the pigment, for example,
Clay, calcium carbonate, kaolin, talc, titanium oxide, silica, zinc oxide, aluminum hydroxide, clay, lake, synthetic plastic pigments, etc. are used alone or in the form of a mixture. The pigment is usually used in an amount of 40 to 70 parts by weight based on 100 parts by weight of the coating liquid.
本発明の塗工液におけるバインダーとしては、慣用のも
の、即ち合成又は天然高分子のラテックス又は溶液が用
いられる。このような高分子物質としては、スチレン／
ブタジェン系共重合体、スチレン／アクリル系共重合体
、酢酸ビニル／アクリル系共重合体、エチレン／酢酸ビ
ニル系共重合体、ブタジェン／メチルメタクリレート系
共重合体、酢酸ビニル／ブチルアクリレート系共重合体
、スチレン／無水マレイン酸系共重合体、イソブチン／
無水マレイン酸系共重合体、アクリル酸ｌメチルメタク
リレート系共重合体、酸化デン粉、エステル化デン粉、
エーテル化デン粉、酵素変性デン粉、カゼイン、大豆蛋
白及びこれらの各種混合物が例示される。バインダーは
、好ましくは顔料１００重量部に対し３〜３０重量部、
特に７〜２０重量部の割合で用いられる。As the binder in the coating solution of the present invention, a conventional one, ie, a latex or solution of a synthetic or natural polymer, is used. Examples of such polymeric substances include styrene/
Butadiene copolymer, styrene/acrylic copolymer, vinyl acetate/acrylic copolymer, ethylene/vinyl acetate copolymer, butadiene/methyl methacrylate copolymer, vinyl acetate/butyl acrylate copolymer , styrene/maleic anhydride copolymer, isobutyne/
Maleic anhydride copolymer, methyl acrylate copolymer, oxidized starch, esterified starch,
Examples include etherified starch, enzyme-modified starch, casein, soybean protein, and various mixtures thereof. The binder is preferably 3 to 30 parts by weight per 100 parts by weight of the pigment,
In particular, it is used in a proportion of 7 to 20 parts by weight.
本発明の塗工液には、更に分散剤を必要に応じ適量含有
させることができる。このような分散剤としては、ポリ
アクリル酸ソーダ、ヘキサメタリン酸ソーダ及びピロリ
ン酸ソーダが例示される。The coating liquid of the present invention may further contain an appropriate amount of a dispersant as required. Examples of such dispersants include sodium polyacrylate, sodium hexametaphosphate, and sodium pyrophosphate.
尚、本発明の塗工液には、必要に応じ、増粘剤、消泡剤
、耐水化剤、着色剤等の助剤を適宜添加することができ
る。In addition, auxiliary agents such as a thickener, an antifoaming agent, a waterproofing agent, and a coloring agent can be appropriately added to the coating liquid of the present invention, if necessary.
本発明の塗工液は、上質紙、中質紙、板紙等の紙基材の
一方又は周表面に塗工され、塗工紙が形成される。塗工
は、ブレードコーター、ロールコータ−、エアナイフコ
ーター等を用いる通常の方法により行うことができる。The coating liquid of the present invention is applied to one or the peripheral surface of a paper base material such as high-quality paper, medium-quality paper, or paperboard to form coated paper. Coating can be carried out by a conventional method using a blade coater, roll coater, air knife coater, or the like.
（発明の効果）
本発明の塗工液は、保水性、流動性が向上されたもので
あり、印刷適性、耐ピツキング性、光沢、平滑性等に優
れた塗工紙を与える。(Effects of the Invention) The coating liquid of the present invention has improved water retention and fluidity, and provides coated paper with excellent printability, picking resistance, gloss, smoothness, etc.
（実施例） 次に本発明を実施例によりさらに詳細に説明する。(Example) Next, the present invention will be explained in more detail with reference to Examples.
実施例
表−２及び表−３に示す各種の添加剤０．２重量部を含
む下記成分組成の標準水性塗工液Ａ及びＢを調製した。Example Standard aqueous coating solutions A and B having the following component compositions containing 0.2 parts by weight of various additives shown in Tables 2 and 3 were prepared.
これらの塗工液Ａ及びＢはいずれも固形分濃度６０ｗｔ
％ｐ ）＋ ８ 、５を有するものであった。Both of these coating solutions A and B have a solid content concentration of 60wt.
%p)+8.5.
表−１
て、実験ＮａＬ〜１１で用いた添加剤はアニオン化変性
ポリビニルアルコールであり、その重合度、ケン化度、
アニオン化変性度が示されている。一方。Table 1 The additive used in Experiment NaL~11 was anionized modified polyvinyl alcohol, and its degree of polymerization, saponification degree,
The degree of anionic modification is indicated. on the other hand.
実験Ｎα１２及び１３で用いた添加剤はそれぞれＣＭＣ
及びポリアクリル酸ソーダであり、実験Ｎα１４では添
加剤は使用されていない。また、実！＃ＩＮα１１〜１
４はいずれも比較例を示すものである。The additives used in experiments Nα12 and 13 were CMC, respectively.
and sodium polyacrylate, and no additives were used in experiment Nα14. Also, fruit! #INα11~1
4 shows comparative examples.
（１）Ｂ型精度（ｃｐｓ）
ＴＡＰＰＩ基準Ｔ６４８５ｕ−７２に従って測定（回転
数６０ｒｐｍ）
（２）ハイシェア（Ｈ３）粘度（ｃｐｓ）ハイシェアー
粘度計（日本精機■Ｈ）使用。回転数４４０Ｏｒｐｍ。(1) Type B accuracy (cps) Measured according to TAPPI standard T6485u-72 (rotation speed 60 rpm) (2) High Shear (H3) viscosity (cps) Using a High Shear viscometer (Nippon Seiki H). Rotation speed 440 rpm.
（３）流動性
下記式により算出した値で、値の小さい程流動性のすぐ
れていることを示す。(3) Fluidity This is a value calculated using the following formula, and the smaller the value, the better the fluidity is.
次に、前記で得た各塗工液Ａ及びＢについて、その性能
評価を以下のようにして行い、その結果を表−１及び表
−２に示す。なお、表−１及び表−２におい０水相：塗
工液を遠心分離よって水相（液相）と同相とに分離し、
その水相
の粘度を測定。Next, the performance of each of the coating liquids A and B obtained above was evaluated as follows, and the results are shown in Tables 1 and 2. In addition, in Tables 1 and 2, 0 aqueous phase: the coating liquid is separated into an aqueous phase (liquid phase) and the same phase by centrifugation,
Measure the viscosity of the aqueous phase.
（４）保水性
Ｓ Ａ Ｄ Ｗａｒｒｅｎ法に従って測定。その値が大
きい程保水性のよいことを示す。(4) Water retention measured according to S A D Warren method. The larger the value, the better the water retention.
また、塗工液を上質紙（坪量６０ｇ／ｒｆ）に固形分付
着量が１５ｇ／ｒｒｒになるように塗布乾燥して塗工紙
を作り、その塗工紙の性状を以下のようにして測定し、
その結果を表−１及び表−２にあわせてに示す。In addition, coated paper was made by coating and drying the coating solution on high-quality paper (basis weight 60 g/rf) so that the solid content was 15 g/rrr, and the properties of the coated paper were determined as follows. measure,
The results are shown in Tables 1 and 2.
（１）光沢度 ＪＩＳ Ｐ８１４２−１９６５により測定。(1) Glossiness Measured according to JIS P8142-1965.
（２）白色度 ＪＩＳ Ｐ８１２３−１９６１により測定。(2) Whiteness Measured according to JIS P8123-1961.
（３）平滑度 ＪＩＳ Ｐ８１１９−１９７６により測定。(3) Smoothness Measured according to JIS P8119-1976.
（４）ドライ（ＤＲＹ）ビック、つｚｙト（ＩＩＥＴ）
ピックＲＩ印刷機を用いて塗工液の表面に印刷し、ピッ
キング発生状態を＊察し、判定。(4) Dry (DRY) Bic, Tsuzy (IIET)
Print on the surface of the coating liquid using a Pick RI printing machine and detect and judge the occurrence of picking.
評価方法：
５点法で評価を行う。その値が大きいほど、塗工液の印
刷適性が良好であることを示す。Evaluation method: Evaluation will be performed using a 5-point system. The larger the value, the better the printing suitability of the coating liquid.
表−１及び表−２に示された結果かられかるように、本
発明の塗工液は、流動性及び保水性にすぐれるとともに
、光沢度、白色度、平滑度にすぐれた塗工紙を与える。As can be seen from the results shown in Tables 1 and 2, the coating liquid of the present invention has excellent fluidity and water retention, as well as coated paper with excellent gloss, whiteness, and smoothness. give.
また、本発明の塗工液は、ドライピック及びウェットピ
ックにすぐれた塗工紙を与え、印刷適性において非常に
すぐれたものである。Further, the coating liquid of the present invention provides a coated paper excellent in dry pick and wet pick, and has excellent printability.
Claims (2)
が３０〜７０００であって、ケン化度３０〜１００モル
％、アニオン化変性度０．５〜２０モル％の水溶性アニ
オン化変性ポリビニルアルコールを該顔料１００重量部
に対し０．００１〜２重量部の割合で含有させたことを
特徴とする紙塗工液。(1) Water-soluble anionic modification of a coating liquid consisting of a pigment and a binder with an average degree of polymerization of 30 to 7000, a degree of saponification of 30 to 100 mol%, and a degree of anionic modification of 0.5 to 20 mol%. A paper coating liquid characterized in that polyvinyl alcohol is contained in a proportion of 0.001 to 2 parts by weight based on 100 parts by weight of the pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26306289A JPH03124899A (en) | 1989-10-11 | 1989-10-11 | Paper-coating liquid and coated paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26306289A JPH03124899A (en) | 1989-10-11 | 1989-10-11 | Paper-coating liquid and coated paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03124899A true JPH03124899A (en) | 1991-05-28 |
Family
ID=17384321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26306289A Pending JPH03124899A (en) | 1989-10-11 | 1989-10-11 | Paper-coating liquid and coated paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03124899A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004359795A (en) * | 2003-06-04 | 2004-12-24 | Nippon Synthetic Chem Ind Co Ltd:The | Coating agent composition used for printing substrate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63233011A (en) * | 1986-11-07 | 1988-09-28 | Nippon Shokubai Kagaku Kogyo Co Ltd | Production of calcium carbonate aqueous dispersion |
-
1989
- 1989-10-11 JP JP26306289A patent/JPH03124899A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63233011A (en) * | 1986-11-07 | 1988-09-28 | Nippon Shokubai Kagaku Kogyo Co Ltd | Production of calcium carbonate aqueous dispersion |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004359795A (en) * | 2003-06-04 | 2004-12-24 | Nippon Synthetic Chem Ind Co Ltd:The | Coating agent composition used for printing substrate |
| JP4669210B2 (en) * | 2003-06-04 | 2011-04-13 | 日本合成化学工業株式会社 | Coating agent composition used for printing substrate |
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