JP4198704B2 - Coloring composition erasable by washing - Google Patents
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本発明は、墨汁、絵具、マーキングペン用インキ等として用いることができる着色材組成物に関する。さらに詳細には、紙に塗布した場合、高湿度下で滲みを生じることなく、また布、不織布などの繊維集合体に付着した場合に、簡単な水洗（洗濯）により消去することができる着色材組成物に関する。 The present invention relates to a colorant composition that can be used as ink, paint, marking pen ink, and the like. More specifically, a coloring material that can be erased by simple washing (washing) when applied to paper, without causing bleeding under high humidity, or when adhering to a fiber assembly such as cloth or nonwoven fabric. Relates to the composition.
従来の墨汁は、衣服などの繊維に付着した場合、乾燥すると洗濯で消去することは困難であった。一方、現在洗濯で消去できる墨汁が提案されている。
しかし、これらの着色材組成物は染料を使用したものであり、その構成要素から紙に塗布した場合、高湿度下での滲みの問題があった。 However, these colorant compositions use dyes, and when applied to paper from their constituent elements, there is a problem of bleeding under high humidity.
本発明の課題は、紙に塗布した場合、高湿度下で滲みを生じることなく、また布、不織布などの繊維集合体に付着した場合に、簡単な水洗（洗濯）により消去することができる着色材組成物を提供するところにある。 The problem of the present invention is that coloring can be eliminated by simple water washing (washing) when applied to paper, without causing bleeding under high humidity, or when adhering to a fiber assembly such as cloth or nonwoven fabric. The material composition is to be provided.
本発明は、少なくとも着色顔料、水溶性樹脂及び水を含む着色材組成物であって、
上記水溶性樹脂Ｒとして、酸価１１０〜２２０の樹脂Ａが含まれており、
上記着色顔料が前記樹脂Ａにより分散されており、
前記着色顔料Ｐと前記水溶性樹脂Ｒとの重量比（Ｐ／Ｒ比）が１／１〜１／３０であり、
前記着色顔料Ｐと前記樹脂Ａとの重量比（Ｐ／Ａ比）が１０／１〜１．５／１であることを特徴とする、洗濯により消去可能な着色材組成物である。
The present invention is a colorant composition comprising at least a color pigment, a water-soluble resin and water,
The water-soluble resin R includes a resin A having an acid value of 110 to 220,
The colored pigment is dispersed by the resin A,
The weight ratio (P / R ratio) between the color pigment P and the water-soluble resin R is 1/1 to 1/30,
A colorant composition erasable by washing, wherein a weight ratio (P / A ratio) between the color pigment P and the resin A is 10/1 to 1.5 / 1.
また本発明のさらに好ましい態様は、少なくとも着色顔料、水溶性樹脂及び水を含む着色材組成物であって、
上記水溶性樹脂として、酸価１１０〜２２０の水溶性樹脂Ａと酸価２００〜２６０の水溶性樹脂Ｂが含まれており、
前記樹脂Ｂが前記樹脂Ａより酸価が大きく、かつ
上記着色顔料が前記水溶性樹脂Ａにより分散されている、洗濯により消去可能な着色材組成物である。
A further preferred embodiment of the present invention is a colorant composition comprising at least a color pigment, a water-soluble resin and water,
The water-soluble resin includes a water-soluble resin A having an acid value of 110 to 220 and a water-soluble resin B having an acid value of 200 to 260,
The resin B has a higher acid value than the resin A, and the color pigment is dispersed in the water-soluble resin A, and is a colorant composition that can be erased by washing.
なお、前記樹脂Ｂと前記樹脂Ａの重量比（Ｂ／Ａ）が０．９〜３０である着色材組成物が好ましい。 In addition, the coloring material composition whose weight ratio (B / A) of the said resin B and the said resin A is 0.9-30 is preferable.
洗濯により消去可能な着色材組成物は、着色顔料、水溶性樹脂Ａと水を少なくとも配合し分散して顔料分散体を得た後、この顔料分散体に、前記水溶性樹脂Ａより酸価が大きい水溶性樹脂Ｂの水溶液を添加することにより得られる。 The colorant composition that can be erased by washing is prepared by dispersing at least a coloring pigment, a water-soluble resin A, and water to obtain a pigment dispersion, and then the acid value of the pigment dispersion is higher than that of the water-soluble resin A. It is obtained by adding a large aqueous solution of water-soluble resin B.
これにより、染料を用いていないので高湿度下での滲みなどの問題が生ずることなくなって衣服などの繊維に上記着色材組成物が付着しても、洗濯による消去性が向上する。
従って、墨汁、サインペン用インキ、マーキングペン用インキなどの粘度が２００ｍＰａ・ｓ以下の着色材組成物のほか、高粘度の絵の具等の着色材組成物に適用して、洗濯により消去可能な着色材組成物を提供することができる。
Accordingly, since no dye is used, problems such as bleeding under high humidity do not occur, and even if the colorant composition adheres to fibers such as clothes, the erasability by washing is improved.
Therefore, in addition to colorant compositions having a viscosity of 200 mPa · s or less, such as ink for ink, sign pen ink, marking pen ink, etc., colorants that can be erased by washing can be applied to colorant compositions such as high-viscosity paints. A composition can be provided.
＜着色顔料＞
本発明で用いられる着色顔料は、粒径が細かく、着色効果を有することが求められる。具体的には粒径０．０５〜０．５μｍの顔料が好ましい。例えば、カーボンブラック、アニリンブラック、鉄黒、モノアゾ、アンスラキノン、キナクリドン、フタロシアニン、群青、紺青、アンスラキノンを用いることができる。
<Coloring pigment>
The color pigment used in the present invention is required to have a fine particle size and a coloring effect. Specifically, a pigment having a particle size of 0.05 to 0.5 μm is preferable. For example, carbon black, aniline black, iron black, monoazo, anthraquinone, quinacridone, phthalocyanine, ultramarine blue, bitumen, and anthraquinone can be used.
着色顔料の配合量は、着色材組成物全量に対して１〜１０重量％、好ましくは２〜７重量％である。着色顔料が着色材組成物全量に対して１重量％未満の場合は、発色が低下する。着色顔料が着色材組成物全量に対して１０重量％を越える場合は、粘度が上がって筆記や描画し難くなるほか、繊維に付着した後落ちにくくなる。 The blending amount of the color pigment is 1 to 10% by weight, preferably 2 to 7% by weight, based on the total amount of the colorant composition. When the color pigment is less than 1% by weight based on the total amount of the colorant composition, the color development is lowered. When the color pigment exceeds 10% by weight with respect to the total amount of the colorant composition, the viscosity increases and it becomes difficult to write or draw, and it is difficult to drop after adhering to the fiber.
＜水溶性樹脂＞
本発明では水溶性樹脂を用いる。その水溶性樹脂（以下、水溶性樹脂Ｒと称する場合がある。）としては、水に溶解可能で、着色顔料を顔料分散体として分散させ、かつ分散安定性に優れる樹脂Ａを含有することが好ましい。この樹脂Ａとしては酸価１１０〜２２０の樹脂、好ましくは酸価２１０〜２２０の樹脂を好適に用いることができる。例えば、酸価が１１０〜２２０、好ましくは酸価２１０〜２２０である、スチレンアクリル共重合体、スチレンマレイン酸共重合体、ポリアクリル酸、エチレン−マレイン酸共重合体などを挙げることができる。
そして、かかる樹脂Ａを含む水溶性樹脂Ｒは、前記着色顔料Ｐと前記水溶性樹脂Ｒとの重量比（Ｐ／Ｒ）を１／１〜１／３０とすることにより、着色顔料含有の着色材組成物において洗濯消去性を向上することが可能となる。
<Water-soluble resin>
In the present invention, a water-soluble resin is used. The water-soluble resin (hereinafter sometimes referred to as water-soluble resin R) contains a resin A that is soluble in water, disperses a color pigment as a pigment dispersion, and has excellent dispersion stability. preferable. As the resin A, a resin having an acid value of 110 to 220, preferably a resin having an acid value of 210 to 220 can be suitably used. For example, a styrene acrylic copolymer, a styrene maleic acid copolymer, a polyacrylic acid, an ethylene-maleic acid copolymer having an acid value of 110 to 220, preferably an acid value of 210 to 220, and the like can be given.
The water-soluble resin R containing the resin A is colored with a color pigment by setting the weight ratio (P / R) of the color pigment P and the water-soluble resin R to 1/1 to 1/30. It becomes possible to improve washing erasability in the material composition.
なお、前記着色顔料Ｐと前記水溶性樹脂Ｒの重量比（Ｐ／Ｒ比）が１／１を超える場合は、洗濯による消去性が低下する。一方、前記着色顔料と前記水溶性樹脂の重量比（Ｐ／Ｒ比）が１／３０未満となる場合は、粘度が高くなり、使用感が低下する。 In addition, when the weight ratio (P / R ratio) of the said color pigment P and the said water-soluble resin R exceeds 1/1, the erasability by washing falls. On the other hand, when the weight ratio (P / R ratio) between the color pigment and the water-soluble resin is less than 1/30, the viscosity increases and the feeling in use decreases.
また、前記樹脂Ａは、着色材組成物全量に対して０．１〜７．０重量％、特に０．２〜３．５重量％が好ましい。前記樹脂Ａが着色材組成物全量に対して０．１重量％未満の場合、顔料の分散性が低下し、経時的に凝集し、洗濯による消去性が低下する。前記樹脂Ａが着色材組成物全量に対して７．０重量％を超える場合、顔料の分散性は向上するが、粘度が高くなり、使用感が低下し、経時的にゲル化し易くなる。 The resin A is preferably 0.1 to 7.0% by weight, particularly preferably 0.2 to 3.5% by weight, based on the total amount of the colorant composition. When the resin A is less than 0.1% by weight with respect to the total amount of the colorant composition, the dispersibility of the pigment is reduced, and is aggregated with time, and the erasability by washing is reduced. When the resin A exceeds 7.0% by weight with respect to the total amount of the colorant composition, the dispersibility of the pigment is improved, but the viscosity is increased, the feeling of use is lowered, and the gel is easily gelled with time.
前記着色顔料Ｐと前記樹脂Ａの重量比（Ｐ／Ａ比）は１０／１〜１．５／１、好ましくは５／１〜２／１である。前記着色顔料と前記樹脂Ａの重量比（Ｐ／Ａ比）が１０／１を超える場合、顔料の分散性が低下し、経時的に凝集し、洗濯による消去性が低下する。前記着色顔料と前記樹脂Ａの重量比（Ｐ／Ｒ比）が１．５／１未満の場合は、粘度が高くなり、使用感が低下し、経時的にゲル化し易くなる。 The weight ratio (P / A ratio) between the color pigment P and the resin A is 10/1 to 1.5 / 1, preferably 5/1 to 2/1. When the weight ratio (P / A ratio) between the colored pigment and the resin A exceeds 10/1, the dispersibility of the pigment is lowered, and it aggregates with time, and the erasability by washing is lowered. When the weight ratio (P / R ratio) between the color pigment and the resin A is less than 1.5 / 1, the viscosity increases, the feeling of use decreases, and the gelation tends to occur with time.
また、本発明では、更に、この分散された着色顔料の顔料分散体に更に中性の水によって洗濯消去性を向上させる水溶性樹脂として、特に酸価が２００〜２６０、好ましくは２００〜２４０の樹脂Ｂを好適に用いることができる。例えば、酸価が２００〜２６０、好ましくは２００〜２４０である、スチレンアクリル共重合体、スチレンマレイン酸共重合体、ポリアクリル酸、エチレン−マレイン酸共重合体を挙げることができる。また、かかる水溶性樹脂として、ポリビニルアルコール、ポリビニルピロリドン、ポリエチレンオキサイドなどの樹脂Ｃを用いることもできる。例えば、クラレ社製、商品名「PVA403」を挙げることができる。なおまた、前記樹脂Ｂと前記樹脂Ｃを混合することも可能である。 Further, in the present invention, the water-soluble resin that further improves the washing erasability by neutral water in the pigment dispersion of the dispersed color pigment, particularly has an acid value of 200 to 260, preferably 200 to 240. Resin B can be suitably used. Examples thereof include styrene acrylic copolymers, styrene maleic acid copolymers, polyacrylic acid, and ethylene-maleic acid copolymers having an acid value of 200 to 260, preferably 200 to 240. Moreover, resin C, such as polyvinyl alcohol, polyvinyl pyrrolidone, polyethylene oxide, can also be used as this water-soluble resin. For example, a product name “PVA403” manufactured by Kuraray Co., Ltd. can be mentioned. It is also possible to mix the resin B and the resin C.
前記樹脂Ｂは、前記水溶性樹脂を着色材組成物全量に対して１〜３０重量％、好ましくは１０〜２５重量％含有する。前記水溶性樹脂が着色材組成物全量に対して１重量％未満の場合は、洗濯による消去性が低下する。また前記水溶性樹脂が着色材組成物全量に対して３０重量％を越える場合は、粘度が高くなり、使用感が低下する。 The resin B contains the water-soluble resin in an amount of 1 to 30% by weight, preferably 10 to 25% by weight, based on the total amount of the colorant composition. When the water-soluble resin is less than 1% by weight based on the total amount of the colorant composition, the erasability by washing is lowered. Moreover, when the said water-soluble resin exceeds 30 weight% with respect to the coloring material composition whole quantity, a viscosity will become high and a usability | use_condition will fall.
このように、酸価１１０〜２２０の樹脂で着色顔料を分散し、酸価２００〜２６０の樹脂Ｂで水溶性を増大させることにより、着色顔料含有の着色材組成物において洗濯消去性を向上することが可能となる。 As described above, by dispersing the color pigment with the resin having an acid value of 110 to 220 and increasing the water solubility with the resin B having an acid value of 200 to 260, the washing erasability is improved in the colorant composition containing the color pigment. It becomes possible.
なお、前記樹脂Ｂと前記樹脂Ａの重量比（Ｂ／Ａ）は０．９〜３０が好ましい。このような範囲とすることにより、着色顔料が分散される樹脂Ａと、水により洗濯消去性を発現する樹脂Ｂとの相乗作用を発揮することができる。 The weight ratio (B / A) between the resin B and the resin A is preferably 0.9 to 30. By setting it as such a range, the synergistic effect of resin A in which a color pigment is disperse | distributed and resin B which expresses washing erasability with water can be exhibited.
また、水による洗濯消去性を増大させるために、前記水溶性樹脂、特にカルボン酸を有する樹脂Ｂの場合、これが水に溶解し、アルカリ性を呈し、中和したこれらの樹脂が塗布又は筆記して乾燥した後でも水に溶解する中和剤を含ませることが好ましい。具体的には、スチレンアクリル共重合体、スチレンマレイン酸共重合体、ポリアクリル酸及びエチレン−マレイン酸共重合体の群から選ばれる水溶性樹脂が樹脂Ｂである場合、上記中和剤を含ませることが好ましい。中和剤としては、無機塩類、アルカノールアミン類、アルキルアミン類及びジアミン類の群から選ばれる。無機塩類としては、水酸化リチウム、水酸化ナトリウム、水酸化カリウムなどが挙げられ、アルカノールアミン類としてはモノエタノールアミン、ジエタノールアミン、トリエタノールアミン、モノイソプロパノールアミン、ジイソパノールアミン、トリイソパノールアミンなどが挙げられ、ジアミン類としてはエチレンジアミン、プロピレンジアミン、Ｎ，Ｎ，Ｎ’，Ｎ’−テトラメチルエチレンジアミンが挙げられる。特に、上記アルキルアミン類、無機塩類が中和した前記樹脂が乾燥した後でも、水による消去性が高く好ましい。なお、中和剤として水酸化アンモニウムを用いると、塗膜又は筆跡の乾燥の際、アンモニアが揮発するため、洗濯消去性が低下しやすい。 Further, in order to increase washing erasability with water, in the case of the water-soluble resin, in particular, the resin B having a carboxylic acid, it is dissolved in water, exhibits alkalinity, and these neutralized resins are applied or written. It is preferable to include a neutralizing agent that dissolves in water even after drying. Specifically, when the water-soluble resin selected from the group of styrene acrylic copolymer, styrene maleic acid copolymer, polyacrylic acid and ethylene-maleic acid copolymer is Resin B, the neutralizing agent is included. Preferably. The neutralizing agent is selected from the group of inorganic salts, alkanolamines, alkylamines and diamines. Examples of inorganic salts include lithium hydroxide, sodium hydroxide, and potassium hydroxide. Examples of alkanolamines include monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopanolamine, and triisopanolamine. Examples of diamines include ethylenediamine, propylenediamine, and N, N, N ′, N′-tetramethylethylenediamine. In particular, even after the resin neutralized with the alkylamines and inorganic salts is dried, the erasability with water is high, which is preferable. In addition, when ammonium hydroxide is used as a neutralizing agent, when the coating film or handwriting is dried, ammonia is volatilized, so that the washing erasability tends to be lowered.
前記中和剤は、前記水溶性樹脂を着色材組成物全量に対して０．１〜２０重量％、好ましくは１．０〜１５重量％含有する。前記中和剤が着色材組成物全量に対して０．１重量％未満の場合は、前記樹脂が水に溶解し難くなる。一方、前記水溶性樹脂が着色材組成物全量に対して２０重量％を越える場合は、洗濯消去性が低下し、乾燥後に高湿度下での滲みが発生する。 The neutralizing agent contains the water-soluble resin in an amount of 0.1 to 20% by weight, preferably 1.0 to 15% by weight, based on the total amount of the colorant composition. When the neutralizing agent is less than 0.1% by weight based on the total amount of the colorant composition, the resin is difficult to dissolve in water. On the other hand, when the water-soluble resin exceeds 20% by weight with respect to the total amount of the colorant composition, the washing erasability is lowered and bleeding occurs under high humidity after drying.
その他必要に応じて、グリセリン、プロピレングリコール、エチレングリコール等の多価アルコールや、防腐防黴剤を添加しても良い。 In addition, you may add polyhydric alcohols, such as glycerol, propylene glycol, and ethylene glycol, and antiseptic / antifungal agents as needed.
なお、本発明の着色材組成物は、着色顔料、樹脂Ａと水を少なくとも配合し分散してまず顔料分散体を得た後、この顔料分散体に樹脂Ｂの水溶液を添加することによって得ることができる。 The colorant composition of the present invention is obtained by first blending and dispersing a color pigment, resin A and water to obtain a pigment dispersion, and then adding an aqueous solution of resin B to the pigment dispersion. Can do.
表１に示す組成にて、着色顔料、樹脂Ａ、水、必要に応じて顔料濡れ剤を配合し、ビーズミル（ダイノーミル：シンマルエンタープライゼス社製）にて１時間分散を行う。次に、この顔料分散体に樹脂Ｂの水溶液を添加し３０分攪拌して、墨汁の着色材組成物を得る。 In the composition shown in Table 1, a coloring pigment, resin A, water, and a pigment wetting agent are blended if necessary, and dispersed for 1 hour in a bead mill (Dyno mill: manufactured by Shinmaru Enterprises). Next, an aqueous solution of Resin B is added to the pigment dispersion and stirred for 30 minutes to obtain a black ink colorant composition.
（表注）
１）商品名：Monarch800（カーボンブラック／CABOT社製） １７重量％、水溶性樹脂（スチレンアクリル共重合体、ジョンソンポリマー社製、商品名：Johncryl 683） ３．４重量％、樹脂中和剤（水酸化ナトリウム） ０．４重量％、残部が水の顔料分散体
２）商品名：シムラファーストレッド４１２７ １７重量％、水溶性樹脂（スチレンアクリル共重合体、ジョンソンポリマー社製、商品名：Johncryl 683） ３．４重量％、樹脂中和剤（水酸化ナトリウム） ０．４重量％、残部が水の顔料分散体
３）商品名：ファーストゲンブルー ＴＧＲ １７重量％、水溶性樹脂（スチレンアクリル共重合体、ジョンソンポリマー社製、商品名：Johncryl 683） ３．４重量％、樹脂中和剤（水酸化ナトリウム） ０．４重量％、残部が水の顔料分散体
４）商品名：Johncryl 690（スチレンアクリル共重合体／ジョンソンポリマー社製）の３０％水溶液（水酸化ナトリウム中和）
５）商品名：PVA403（ポバール／クラレ社製）の３０重量％水溶液
６）商品名：Johncryl 611（スチレンアクリル共重合体／ジョンソンポリマー社製）の２０％水溶液（水酸化ナトリウム中和）
７）商品名：PVA102（ポバール／クラレ社製）の２０重量％水溶液
８）商品名：Monarch800（カーボンブラック／CABOT社製） １７重量％、水溶性樹脂（スチレンアクリル共重合体、ジョンソンポリマー社製、商品名：Johncryl 678）の３．４重量％、樹脂中和剤（水酸化ナトリウム） ０．５重量％、残部が水の顔料分散体
９）商品名：Monarch800（カーボンブラック／CABOT社製） １７重量％、水溶性樹脂（スチレンアクリル共重合体、星光化学工業社製、商品名：Ｘ−１）の３．４重量％、樹脂中和剤（水酸化ナトリウム） ０．６重量％、残部が水の顔料分散体
１０）商品名：Ｘ−１２０２Ｓ（スチレン−マレイン酸共重合体、星光化学工業社製）の３０重量％水溶液（水酸化ナトリウム中和）
(Table note)
1) Product name: Monarch800 (carbon black / manufactured by CABOT) 17% by weight, water-soluble resin (styrene acrylic copolymer, manufactured by Johnson Polymer Co., Ltd., product name: Johncryl 683) 3.4% by weight, resin neutralizer ( Sodium hydroxide) 0.4% by weight, the balance being water pigment dispersion 2) Trade name: Shimura First Red 4127 17% by weight, water-soluble resin (styrene acrylic copolymer, manufactured by Johnson Polymer Co., Ltd., trade name: Johncryl 683 ) 3.4% by weight, resin neutralizer (sodium hydroxide) 0.4% by weight, balance of water pigment dispersion 3) Product name: Fast Gen Blue TGR 17% by weight, water-soluble resin (styrene acrylic copolymer) Coalition, manufactured by Johnson Polymer Co., Ltd., trade name: Johncryl 683) 3.4% by weight, resin neutralizer (sodium hydroxide) 0.4% by weight, the balance being water pigment dispersion 4) Trade name: Johncryl 690 30% aqueous solution of styrene acrylic copolymer / manufactured by Johnson Polymer (neutralized with sodium hydroxide)
5) Trade name: 30% by weight aqueous solution of PVA403 (Poval / Kuraray) 6) Trade name: 20% aqueous solution of Johncryl 611 (styrene acrylic copolymer / Johnson Polymer) (sodium hydroxide neutralized)
7) Product name: 20% by weight aqueous solution of PVA102 (Poval / Kuraray) 8) Product name: Monarch800 (carbon black / CABOT) 17% by weight, water-soluble resin (styrene acrylic copolymer, manufactured by Johnson Polymer) , Product name: Johncryl 678), 3.4% by weight, resin neutralizer (sodium hydroxide) 0.5% by weight, the balance being water pigment dispersion 9) Product name: Monarch800 (Carbon Black / manufactured by CABOT) 17% by weight, 3.4% by weight of water-soluble resin (styrene acrylic copolymer, manufactured by Seiko Chemical Industry Co., Ltd., trade name: X-1), 0.6% by weight of resin neutralizer (sodium hydroxide), balance 10) Trade name: X-1202S (styrene-maleic acid copolymer, manufactured by Seiko Chemical Industry Co., Ltd.), 30% by weight aqueous solution (neutralized with sodium hydroxide)
なお、表に示す樹脂の酸価は、商品情報による値又は常法により測定した値である。 In addition, the acid value of resin shown to a table | surface is the value measured by the value by merchandise information, or a conventional method.
次に、綿ブロード（晒）の試験布に水を含まない画筆（平筆４号）を用いて、この墨汁組成物を塗布し、室温で指触乾燥するまで放置した。その後、乾燥後の試験サンプルを洗濯機でｐＨが弱アルカリ性の合成洗剤を使用して（洗濯槽の水量に対して０．２重量％）２０℃で１５分間洗濯し、１５分間水洗した。乾燥後に試験サンプルを目視で観察し、評価した。 Next, this ink composition was applied to a cotton broad (bleached) test cloth using a brush (No. 4) containing no water and left to dry at the room temperature. Thereafter, the dried test sample was washed at 20 ° C. for 15 minutes using a washing machine with a weakly alkaline synthetic detergent having a low pH (0.2% by weight based on the amount of water in the washing tub), and then washed with water for 15 minutes. After drying, the test samples were visually observed and evaluated.
＜消去性評価＞
○が合格、△×が不合格である。
○：汚れが除去されている。
△：色、筆跡がはっきりわかる。
×：全く落ちない。
<Eraseability evaluation>
○ is acceptable and Δ × is unacceptable.
○: Dirt is removed.
Δ: Color and handwriting clearly understood.
X: It does not fall at all.
＜書き味評価＞
○が合格、△×が不合格である。
○：非常になめらかである。
△：もたつき、ひっかかりがある。
×：もたつきがひどく、ほとんど書けない。
<Writing evaluation>
○ is acceptable and Δ × is unacceptable.
○: Very smooth.
(Triangle | delta): There is stickiness and a catch.
X: The stickiness is bad and almost cannot be written.
表１より、本実施例の着色材組成物であれば、染料を用いていないので高湿度下での滲みなどの問題が生ずることなく、誤って衣服などの繊維に上記着色材組成物が付着しても、洗濯による消去性が向上する。また、書き味も良好である。 From Table 1, since the dye composition is not used in the colorant composition of this example, the above colorant composition is mistakenly attached to fibers such as clothes without causing problems such as bleeding under high humidity. Even so, erasability by washing is improved. Moreover, the writing quality is also good.
本発明の着色材組成物は、墨汁(墨液)、絵具のほか、マーキングペン用インキ等の水性インキ組成物として用いることができる。
The colorant composition of the present invention can be used as a water-based ink composition such as ink for marking pens in addition to ink (ink liquid) and paint.
Claims (6)
上記水溶性樹脂Ｒとして、酸価１１０〜２２０の樹脂Ａが含まれており、
上記着色顔料が前記樹脂Ａにより分散されており、
前記着色顔料Ｐと前記水溶性樹脂Ｒとの重量比（Ｐ／Ｒ比）が１／１〜１／３０であり、
前記着色顔料Ｐと前記樹脂Ａとの重量比（Ｐ／Ａ比）が１０／１〜１．５／１であり、
前記水溶性樹脂Rが、前記樹脂Ａと酸価２００〜２６０の樹脂Ｂから構成されており、
前記樹脂Ｂが前記樹脂Ａより酸価が大きく、かつ
前記樹脂Ｂと前記樹脂Ａの重量比（Ｂ／Ａ）が１７．６〜２３．５である、洗濯により消去可能な着色材組成物。 A colorant composition comprising at least a color pigment, a water-soluble resin and water,
The water-soluble resin R includes a resin A having an acid value of 110 to 220,
The colored pigment is dispersed by the resin A,
The weight ratio (P / R ratio) between the color pigment P and the water-soluble resin R is 1/1 to 1/30,
Wherein the weight ratio of coloring pigment P and the resin A (P / A ratio) Ri is 10/1 to 1.5 / 1 der,
The water-soluble resin R is composed of the resin A and a resin B having an acid value of 200 to 260,
The resin B has a larger acid value than the resin A, and
A colorant composition erasable by washing, wherein the weight ratio (B / A) of the resin B to the resin A is 17.6 to 23.5.
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| JP4861013B2 (en) * | 2006-01-12 | 2012-01-25 | 株式会社サクラクレパス | Colorant composition |
| JP4841966B2 (en) * | 2006-02-16 | 2011-12-21 | 株式会社サクラクレパス | Erasable colorant composition |
| JP4881629B2 (en) * | 2006-02-27 | 2012-02-22 | 株式会社サクラクレパス | Erasable colorant composition |
| JP5224662B2 (en) * | 2006-08-09 | 2013-07-03 | 株式会社サクラクレパス | Erasable colorant composition |
| JP5611516B2 (en) * | 2008-09-30 | 2014-10-22 | 株式会社サクラクレパス | Ink-like composition |
| JP6713376B2 (en) * | 2016-08-04 | 2020-06-24 | 株式会社サクラクレパス | Erasable colorant composition |
| JP6730564B2 (en) * | 2016-08-04 | 2020-07-29 | 株式会社サクラクレパス | Erasable colorant composition |
| JP6896270B2 (en) * | 2017-04-13 | 2021-06-30 | 株式会社サクラクレパス | Erasing colorant composition |
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