JPH0331376A - Ink composition for water-base ball point pen - Google Patents

Ink composition for water-base ball point pen

Info

Publication number
JPH0331376A
JPH0331376A JP1166399A JP16639989A JPH0331376A JP H0331376 A JPH0331376 A JP H0331376A JP 1166399 A JP1166399 A JP 1166399A JP 16639989 A JP16639989 A JP 16639989A JP H0331376 A JPH0331376 A JP H0331376A
Authority
JP
Japan
Prior art keywords
water
ball
ink
parts
alkali metal
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
Application number
JP1166399A
Other languages
Japanese (ja)
Inventor
Hiroshi Miyashita
裕志 宮下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentel Co Ltd
Original Assignee
Pentel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pentel Co Ltd filed Critical Pentel Co Ltd
Priority to JP1166399A priority Critical patent/JPH0331376A/en
Publication of JPH0331376A publication Critical patent/JPH0331376A/en
Pending legal-status Critical Current

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  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

PURPOSE:To provide the subject composition composed of a colorant, a water-soluble organic solvent and water, further containing a heptonic acid alkali metal salt, effective in preventing the abrasion of a ball socket caused by the rotation of ball and securing smooth delivery of ink. CONSTITUTION:The objective composition is composed of at least a colorant (e. g. azo-pigment or carbon black), a water-soluble organic solvent [e. g. (di) ethylene glycol] and water and further contains e. g. 1wt.% of a heptonic acid alkali metal salt expressed by formula (X is alkali metal).

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はボールの回転によるボール受は座の摩耗を極力
防止することにより、もって良好なインキの吐出性を確
保せしめた水性ボールペン用インキ組成物に関するもの
である。
Detailed Description of the Invention (Industrial Field of Application) The present invention provides an ink composition for a water-based ballpoint pen that ensures good ink ejection performance by preventing as much as possible the wear of the seat of the ball holder caused by the rotation of the ball. It is about things.

(従来の技術) 従来水性ボールペン用インキは、着色剤と水溶性有機溶
剤と水とよりなっており、その粘度は使用するボールペ
ンの構造により1〜数cps(25℃)のものと50〜
2000cps (25℃)のものとが知られている。
(Prior art) Conventional water-based ballpoint pen ink consists of a colorant, a water-soluble organic solvent, and water, and its viscosity ranges from 1 to several cps (at 25°C) and from 50 to 50 cps depending on the structure of the ballpoint pen used.
2000 cps (25°C) is known.

1〜数cps(25℃)のものは主にインキ吸蔵体とし
て中綿を用いた構造に使用され、50〜2000cps
  (25℃)のものは主にインキ貯蔵体として中空の
筒体を用いた構造に使用されている。
1 to several cps (25℃) is mainly used in structures that use batting as an ink absorber, and is 50 to 2000 cps.
(25°C) is mainly used in structures using hollow cylinders as ink storage bodies.

(発明が解決しようとする課題) 筆記距離が短くなったり、不快音が発生したりするとい
った点である。
(Problems to be Solved by the Invention) The writing distance is shortened and unpleasant noises are generated.

即ち、水性ボールペンは、ボールの回転によるボール受
は座の摩耗、いわゆるボール沈みが発生しやすく、その
結果ボールペンチップ内のインキ流通溝がボールによっ
て塞がれ、インキの吐出が不十分となり、筆跡にかすれ
が生じて円滑な筆記ができなくなり、その結果筆記距離
が短くなったり、不快音が発生したりする等の問題があ
った。
In other words, in water-based ballpoint pens, the ball holder is prone to wear due to the rotation of the ball, so-called ball sinking.As a result, the ink circulation groove in the ballpoint pen tip is blocked by the ball, resulting in insufficient ink discharge and poor handwriting. This causes problems such as blurring, which makes it impossible to write smoothly, resulting in a short writing distance and the generation of unpleasant noises.

この問題は、特に粘度が50〜2000cps(25℃
)であるインキに顕著であるが、1〜数cps(25℃
)であるインキにおいても長期間の使用によりボール沈
みが大きくなると発生するものであった。
This problem is particularly problematic when the viscosity is 50 to 2000 cps (25℃
), but it is noticeable in ink that is 1 to several cps (25℃
), ball sinking also occurs when the ball sinks due to long-term use.

近年、これらの問題を解決するために、水性イフキ中に
水溶性切削油を添加しインキの潤滑性を上げる試みがな
されているが満足な結果は得られていない。
In recent years, in order to solve these problems, attempts have been made to increase the lubricity of the ink by adding water-soluble cutting oil to the water-based ink, but no satisfactory results have been obtained.

(課題を解決するための手段) 本発明は上記課題を解決することを目的としたものであ
って1着色剤と水溶性有機溶剤と水とから少なくともな
る水性ボールペン用インキ組成物であって、更にヘプト
ン酸のアルカリ金属塩を含有していることを特徴とする
水性ボールペン用インキ組成物を要旨とするものである
(Means for Solving the Problems) The present invention aims to solve the above problems, and is an ink composition for a water-based ballpoint pen comprising at least one colorant, a water-soluble organic solvent, and water, The present invention further provides an aqueous ballpoint pen ink composition characterized by containing an alkali metal salt of heptonic acid.

以下詳細に説明する。This will be explained in detail below.

本発明に使用する着色剤、水溶性有機溶剤は、従来より
公知の水性ボールペン用インキ組成物の各成分と何ら異
なるところはない、以下にその一例を示す。
The colorant and water-soluble organic solvent used in the present invention are no different from each component of conventionally known water-based ballpoint pen ink compositions, and examples thereof are shown below.

着色剤は染料や顔料を使用できる。具体的にはアゾ系顔
料、縮合ポリアゾ系顔料、フタロシアニン系顔料、キナ
クリドン系顔料、インジゴ系顔料、チオインジゴ系顔料
などの有機顔料、カーボンブラック、バリウム黄、紺青
、ベンガラ等の無機顔料、C,1,Ac1d  Red
  52.C,1,Ac1d  Bluel、C,1,
Ac1d  Black2等の酸性染料、C,1,Di
rect  Black 19、C,I、Direct
 Blue 86等の直接染料、C,1,Ba5ic 
 Blue  7、C11、Ba5ic  Red  
1等の塩基性染料が挙げられ、単独あるいは混合して使
用することができる。
Dyes and pigments can be used as coloring agents. Specifically, organic pigments such as azo pigments, condensed polyazo pigments, phthalocyanine pigments, quinacridone pigments, indigo pigments, and thioindigo pigments, inorganic pigments such as carbon black, barium yellow, deep blue, and red iron, C, 1 , Ac1d Red
52. C, 1, Ac1d Blue, C, 1,
Acid dyes such as Ac1d Black2, C, 1, Di
rect Black 19, C, I, Direct
Direct dyes such as Blue 86, C, 1, Ba5ic
Blue 7, C11, Ba5ic Red
Examples include basic dyes such as No. 1, which can be used alone or in combination.

水溶性有機溶剤は水性ボールペン用インキとしての種々
の品質、即ち、ペン先でのインキ乾燥防止、低温時での
インキ凍結防止などの目的で使用するものであり、具体
的には、エチレングリコール、ジエチレングリコール、
トリエチレングリコール、プロピレングリコール、ポリ
エチレングリコール、1,3−ブチレンゲリコール、チ
オジエチレン、グリコール、グリセリン等のグリコール
類や、エチレングリコールモノメチルエーテル、ジエチ
レングリコールモノメチルエーテル、2−ピロリドン、
N−メチル−2−ピロリドン、トリエタノールアミン等
が単独あるいは混合して用いられる。
Water-soluble organic solvents are used to improve the quality of water-based ballpoint pen inks, such as to prevent ink from drying at the pen tip and to prevent ink from freezing at low temperatures.Specifically, ethylene glycol, diethylene glycol,
Glycols such as triethylene glycol, propylene glycol, polyethylene glycol, 1,3-butylene gelylcol, thiodiethylene, glycol, glycerin, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, 2-pyrrolidone,
N-methyl-2-pyrrolidone, triethanolamine, etc. may be used alone or in combination.

本発明の骨子であるヘプトン酸のアルカリ金属塩はボー
ル受は座摩耗防止のために用いられるものであり、下記
一般式(1)で示されるものである。
The alkali metal salt of heptonic acid, which is the gist of the present invention, is used in ball bearings to prevent seat wear, and is represented by the following general formula (1).

CH,OH−(CHOH)、a coox・ (1)(
Xはアルカリ金属を示す) 尚、着色剤として顔料を用いた場合や、粘度を50〜2
000cps (25℃)に設定した水性ボールペン用
インキの場合1分散剤や粘度調整剤としてスチレン−マ
レイン酸系樹脂、スチレン−(メタ)アクリル酸系樹脂
、ピロリドン系樹脂、セルロース系樹脂などを使用する
ことになり、更に必要に応じて、尿素、チオ尿素、エチ
レン尿素又はこれらの誘導体等の公知の乾燥防止剤・湿
潤剤や、その他凍結防止剤、防腐剤、防黴剤、潤滑剤な
ど種々の添加剤を使用し得ることもちろんである。
CH, OH-(CHOH), a coox・ (1)(
(X represents an alkali metal) In addition, when a pigment is used as a coloring agent, or when the viscosity is 50 to 2
In the case of water-based ballpoint pen ink set at 000 cps (25°C) 1. Use styrene-maleic acid resin, styrene-(meth)acrylic acid resin, pyrrolidone-based resin, cellulose-based resin, etc. as a dispersant or viscosity modifier. Therefore, if necessary, various known anti-drying agents/wetting agents such as urea, thiourea, ethylene urea or derivatives thereof, other anti-freezing agents, preservatives, anti-mold agents, lubricants, etc. may be added. Of course, additives may be used.

本発明のインキを製造するに際しては、従来知られてい
る種々の方法が採用できるが1例えば、着色剤として染
料を用いた場合にはターボミキサー、ホモミキサーなど
の撹拌機により混合撹拌することによって1着色剤とし
て顔料を用いた場合にはボールミル、ホモミキサー、サ
ンドグラインダー、スピードラインミル、ロールミル等
の分散機により混合摩砕することによって容易に得られ
る。
When producing the ink of the present invention, various conventionally known methods can be employed. For example, when dyes are used as colorants, mixing and stirring with a stirrer such as a turbo mixer or a homo mixer may be used. When a pigment is used as a coloring agent, it can be easily obtained by mixing and grinding using a dispersing machine such as a ball mill, homomixer, sand grinder, speed line mill, or roll mill.

(作用) ヘプトン酸のアルカリ金属塩が何故ボール受は座の摩耗
防止に効果があるのかについては以下のように推察され
る。
(Function) The reason why the alkali metal salt of heptonic acid is effective in preventing wear of the seat of the ball receiver is surmised as follows.

即ち、ヘプトン酸のアルカリ金属塩は、ボールペンチッ
プに用いられる洋白、ステンレス等の金属に対して大き
なキレート力を有する為、ボール受は座の金属表面にヘ
プトン酸アルカリ金属塩のキレートを形成する。このキ
レートがボールとボール受は座との間でクツション的な
役割の作用をする結果、ボールとボール受は座との間の
摩擦抵抗が小さくなりボール受は座の摩耗が少なくなる
In other words, the alkali metal salt of heptonate has a large chelating power against metals such as nickel silver and stainless steel used in ballpoint pen tips, so the ball holder forms a chelate of the alkali metal salt of heptonate on the metal surface of the seat. . As a result of this chelate acting as a cushion between the ball and the seat of the ball receiver, the frictional resistance between the ball and the seat of the ball receiver is reduced, and the wear of the seat of the ball receiver is reduced.

(実施例) 以下、本発明を実施例により更に詳細に説明するが、実
施例中1部」とあるのは「重量部」を示す。
(Example) Hereinafter, the present invention will be explained in more detail with reference to Examples, in which "1 part" indicates "part by weight".

去1111 カーボンブラック(顔料)       10.0部ス
チレン−アクリル酸共重合物の アンモニウム塩(分散剤)     5.0部ガーガム
(増粘剤)         0.5部エチレングリコ
ール        20.0部グリセリン     
      13.0部ヘプトン酸ソーダ      
    1.0部水                
        50.5部上記各成分中ガーガム及び
ヘプトン酸ソーダ以外の成分を混合し、ボールミルで2
4時間分散処理を行なった後、これにガーガム及びヘプ
トン酸ソーダを加えて再度ボールミルで3時間分散処理
を行い、フィルター等で粗大粒子を除去して黒色のイン
キを得た。
1111 Carbon black (pigment) 10.0 parts Ammonium salt of styrene-acrylic acid copolymer (dispersant) 5.0 parts Gar gum (thickener) 0.5 parts Ethylene glycol 20.0 parts Glycerin
13.0 parts Sodium heptonate
1.0 part water
50.5 parts Among the above ingredients, ingredients other than gar gum and sodium heptonate were mixed, and 2 parts were mixed in a ball mill.
After dispersion treatment for 4 hours, gar gum and sodium heptonate were added thereto, and dispersion treatment was performed again in a ball mill for 3 hours, and coarse particles were removed using a filter or the like to obtain a black ink.

このものの粘度は300cps (25℃)であつた・ ルJ!J2!1 実施例1において、ヘプトン酸ソーダを除き、その分だ
け水を加えた以外は全て実施例1と同様になして黒色の
インキを得た。
The viscosity of this material was 300 cps (25°C) Le J! J2!1 A black ink was obtained in the same manner as in Example 1, except that sodium heptonate was removed and water was added accordingly.

このものの粘度は290cps (25℃)であった。The viscosity of this product was 290 cps (25°C).

失庶皇蛮 銅フタロシアニンブルー(顔料)   10.0部スチ
レン−マレイン酸共重合物の アンモニウム塩(分散剤)     5.0部カルボキ
シメチルセ ルロース エチレングリコール        20.0部グリセ
リン           13.0部ブロクセル X
L−2         0.2部(防腐剤、アイ・シ
ー・アイ・ジャパン■衷)ヘプトン酸カリウム    
     1.5部水               
        49.8部上記各成分中カルボキシメ
チルセルロース及びヘプトン酸カリウム以外の成分を混
合し、ボールミルで24時間分散処理を行なった後,こ
れにガーガム及びヘプトン酸カリウムを加えて再度ボー
ルミルで3時間分散処理を行い、フィルター等で粗大粒
子を除去して青色のインキを得た。
Lost Emperor Copper Phthalocyanine Blue (pigment) 10.0 parts Ammonium salt of styrene-maleic acid copolymer (dispersant) 5.0 parts Carboxymethyl cellulose ethylene glycol 20.0 parts Glycerin 13.0 parts Broxel X
L-2 0.2 parts (preservative, ICI Japan ■) Potassium heptonate
1.5 parts water
49.8 parts Among the above ingredients, components other than carboxymethyl cellulose and potassium heptonate were mixed, and after performing a dispersion treatment in a ball mill for 24 hours, gar gum and potassium heptonate were added thereto, and the dispersion treatment was again performed in a ball mill for 3 hours. Coarse particles were removed using a filter or the like to obtain blue ink.

このものの粘度は270cps (25℃)であった。The viscosity of this product was 270 cps (25°C).

ル1日1λ 実施例2において、ヘプトン酸カリウムを除き、その分
だけ水を加えた以外は全て実施例2と同様になして青色
のインキを得た。
Blue ink was obtained in the same manner as in Example 2, except that potassium heptonate was removed and water was added accordingly.

このものの粘度は265cps (25℃)であった。The viscosity of this product was 265 cps (25°C).

去」11止 C.1.Acid Black  2(染料)       10.0部ヘ
プトン酸ソーダ          1.0部プロピレ
ングリコール       20.0部エチレングリコ
ール モノエチルエーテル      10.0部ベンゾトリ
アゾール(防錆剤)    0.4部水       
                45.6部上記各成
分を撹拌機にて3時間混合撹拌して黒色のインキを得た
11th stop C. 1. Acid Black 2 (dye) 10.0 parts Sodium heptonate 1.0 parts Propylene glycol 20.0 parts Ethylene glycol monoethyl ether 10.0 parts Benzotriazole (rust inhibitor) 0.4 parts Water
45.6 parts of each of the above components were mixed and stirred using a stirrer for 3 hours to obtain a black ink.

このものの粘度は8cps (25℃)であった。The viscosity of this product was 8 cps (25°C).

よ較叢ユ 実施例3において,ヘプトン酸ソーダを除き、その分だ
け水を加えた以外は全て実施例3と同様になして黒色イ
ンキを得た。
In Example 3, a black ink was obtained in the same manner as in Example 3, except that sodium heptonate was removed and water was added accordingly.

このものの粘度は8cps (25℃)であった。The viscosity of this product was 8 cps (25°C).

夾夷五土 カーボンブラック(顔料)       8.0部スチ
レン−アクリル酸共重合物の アンモニウム塩(分散剤)     8.0部エチレン
グリコール        20.0部ヘプトン酸ソー
ダ          1.0部ベンゾトリアゾール(
防錆剤)    0.2部水            
           62.8部上記成分を混合し、
撹拌機にて2時間混合撹拌し,更にサンドミルにて10
時間混合摩砕した後。
Keigoto carbon black (pigment) 8.0 parts Ammonium salt of styrene-acrylic acid copolymer (dispersant) 8.0 parts Ethylene glycol 20.0 parts Sodium heptonate 1.0 parts Benzotriazole (
Rust preventive) 0.2 parts water
Mix 62.8 parts of the above ingredients,
Mix and stir with a stirrer for 2 hours, and then with a sand mill for 10 minutes.
After mixing and grinding for an hour.

粗大粒子をろ過などにより除去し黒色インキを得た。Coarse particles were removed by filtration to obtain black ink.

このものの粘度は3.5cps (25℃)であった。The viscosity of this product was 3.5 cps (25°C).

共n先 実施例4においてヘプトン酸ソーダを除き、その分だけ
水を加えた以外は実施例4と同様になして黒色インキを
得た。
A black ink was obtained in the same manner as in Example 4, except that sodium heptonate was omitted and water was added in an amount equivalent to that amount.

このものの粘度は3.5cps (25℃)であった・ (発明の効果) 実施例1,2、比較例1,2で得たインキを洋白製ボー
ルペンチップ(ボール材質:超硬合金)を一端に連設し
たポリプロピレン製の中空軸筒よりなる透明なインキ収
容管に直接充填し、又実施例3,4.比較例3.4で得
られたインキを、インキ吸蔵体が中綿である市販の水性
金属ボールペン(スーパーボール BH16ぺんてる■
製)に充填し、各々筆記距離、筆記後のボール沈み量、
筆記時の不快音の有無を試験した。
The viscosity of this product was 3.5 cps (25°C). (Effect of the invention) The inks obtained in Examples 1 and 2 and Comparative Examples 1 and 2 were used with a nickel silver ballpoint pen tip (ball material: cemented carbide). A transparent ink storage tube made of a hollow shaft cylinder made of polypropylene connected to one end was directly filled with the ink, and Examples 3 and 4. The ink obtained in Comparative Example 3.4 was applied to a commercially available water-based metal ballpoint pen (Super Ball BH16 Pentel ■) whose ink absorber is batting.
(manufactured by), and each writing distance, amount of ball sinking after writing,
The presence or absence of unpleasant sounds during writing was tested.

結果は表−1のとおりである。The results are shown in Table-1.

注)実施例1,2はインキを使いきったが、比較例1゜
2は筆跡かすれが発生した時点でインキが残っていた。
Note: In Examples 1 and 2, the ink was used up, but in Comparative Example 1.2, ink remained at the time when handwriting became blurred.

本1筆記距離 市販の自転式連続筆記試験機(螺旋機)を用い、連続筆
記してかすれが発生するまでの筆記距離を測定した。
Book 1 Writing Distance Using a commercially available autorotating continuous writing tester (spiral machine), the writing distance until blurring occurred during continuous writing was measured.

(条件) 筆記速度7cm/sea 筆記荷重100g 筆記角度70゜ 本2ボール沈み 上記筆記距離試験において、 実施例1,2及び比較例1,2:筆記前のボール呂と、
筆記終了又はかず九発生後のボール出との差よりボール
沈みを測定した。
(Conditions) Writing speed 7cm/sea Writing load 100g Writing angle 70° 2 balls sunk In the above writing distance test, Examples 1 and 2 and Comparative Examples 1 and 2: Ball temperature before writing,
The sinking of the ball was measured from the difference between the ball's appearance after the writing was completed or the ball was hit.

実施例3,4及び比較例3,4:筆記前のボール出と、
500m連続筆記後のボール出との差よりボール沈みを
測定した。
Examples 3 and 4 and Comparative Examples 3 and 4: Ball release before writing,
Ball sinking was measured from the difference between the ball's release after 500 m of continuous writing.

*3不快音 JIS  P3201筆記用紙Aに手書きにて螺旋を筆
記した際、不快音が発生したものを「有」。
*3: Unpleasant sound: "Yes" indicates that an unpleasant sound was generated when a spiral was drawn by hand on JIS P3201 writing paper A.

しなかったものを「無」とした。Those that did not do so were marked as “nothing.”

以上詳細に説明したように1本発明に係る水性ボールペ
ン用インキは、ボールの回転によるボール受は座の摩耗
が少なく、ボール沈みによる筆記不能や不快音の発生と
いった問題が発生しないという優れた効果を奏し所期の
目的が充分に達成できる有用なものであり、特に、粘度
を50〜2000cpg (25℃)に設定した水性ボ
ールペン用インキの場合その効果は顕著である。
As explained in detail above, (1) the water-based ballpoint pen ink according to the present invention has an excellent effect in that the ball holder due to the rotation of the ball has less wear on the seat, and problems such as the inability to write or the generation of unpleasant noises due to the ball sinking do not occur. It is a useful product that can fully achieve the intended purpose, and the effect is particularly remarkable in the case of a water-based ballpoint pen ink with a viscosity of 50 to 2000 cpg (25° C.).

Claims (1)

【特許請求の範囲】[Claims] 着色剤と水溶性有機溶剤と水とから少なくともなる水性
ボールペン用インキ組成物であって、更にヘプトン酸の
アルカリ金属塩を含有していることを特徴とする水性ボ
ールペン用インキ組成物。
1. An ink composition for an aqueous ballpoint pen comprising at least a colorant, a water-soluble organic solvent, and water, and further comprising an alkali metal salt of heptonic acid.
JP1166399A 1989-06-28 1989-06-28 Ink composition for water-base ball point pen Pending JPH0331376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1166399A JPH0331376A (en) 1989-06-28 1989-06-28 Ink composition for water-base ball point pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1166399A JPH0331376A (en) 1989-06-28 1989-06-28 Ink composition for water-base ball point pen

Publications (1)

Publication Number Publication Date
JPH0331376A true JPH0331376A (en) 1991-02-12

Family

ID=15830698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1166399A Pending JPH0331376A (en) 1989-06-28 1989-06-28 Ink composition for water-base ball point pen

Country Status (1)

Country Link
JP (1) JPH0331376A (en)

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