JPH08239616A - Oil-base ballpoint ink composition - Google Patents
Oil-base ballpoint ink compositionInfo
- Publication number
- JPH08239616A JPH08239616A JP6708395A JP6708395A JPH08239616A JP H08239616 A JPH08239616 A JP H08239616A JP 6708395 A JP6708395 A JP 6708395A JP 6708395 A JP6708395 A JP 6708395A JP H08239616 A JPH08239616 A JP H08239616A
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- Prior art keywords
- ink
- oil
- writing
- resin
- weight
- 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.)
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- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は油性ボールペン用インキ
組成物に関し、更に詳細には高速筆記追従性、筆記時の
泣き・ぼてのない性能を大幅に改良した油性ボールペン
用インキ組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink composition for oil-based ballpoint pens, and more particularly to an ink composition for oil-based ballpoint pens, which is capable of drastically improving high-speed writing followability and performance without crying or swelling during writing. Is.
【０００２】[0002]
【従来の技術】油性ボールペンは一般的に水性ボールペ
ンに比べて直線書き等高速で連続筆記された場合、イン
キの追従が間に合わず、いわゆる線切れを発生しやすか
った。また、この傾向は直径１ｍｍボール等インキ出の
多いボールペンで生じやすく改良が望まれていた。2. Description of the Related Art Generally, an oil-based ballpoint pen is liable to cause so-called line breakage because ink cannot follow in time when continuously written at high speed such as straight line writing as compared with an aqueous ballpoint pen. Further, this tendency is likely to occur in a ballpoint pen having a large amount of ink such as a ball having a diameter of 1 mm, and improvement has been desired.
【０００３】特公平５−７８５９４号公報にはインキの
追従性を向上させてボールペンのインキ続きを良くし、
速書きしてもインキが切れないようにするために、ポリ
ビニルピロリドンＫ−９０（重量平均分子量１２０万）
等を使用することが記載されている。In Japanese Patent Publication No. 5-78594, the ink followability of the ink is improved to improve the ink continuity of the ballpoint pen.
Polyvinylpyrrolidone K-90 (weight average molecular weight 1.2 million) to prevent the ink from running out even if you write in shorthand
Etc. are described.
【０００４】[0004]
【発明が解決しようとする課題】しかし、本発明者が検
討した結果、このような曳糸性付与樹脂を使用したイン
キは４ｍ／ｍｉｎという通常の筆記速度では連続筆記を
しても線切れを生じないが、より速度の速い直線書き、
サイン等を想定した筆記速度では線切れが発生し充分で
はなかった。However, as a result of the study by the present inventors, the ink using such a spinnability imparting resin causes line breakage even when continuous writing is performed at a normal writing speed of 4 m / min. It doesn't happen, but you can write straight lines faster
The writing speed assuming signs etc. was not sufficient because line breaks occurred.
【０００５】本発明は、書き味、書き出し性能、筆跡等
の性能を劣化させることなく、高速筆記追従性、泣き・
ぼてのない性能を改善した優れた油性ボールペン用イン
キ組成物を提供することを目的とする。The present invention is capable of high-speed writing followability, crying, and so on, without degrading writing quality, writing performance, performance such as handwriting.
It is an object of the present invention to provide an excellent oil-based ink composition for an oil-based ballpoint pen, which has an improved non-rolling performance.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明の請求項１に係わる発明は、着色剤、バイン
ダ樹脂、有機溶剤から少なくともなる油性ボールペン用
インキにおいて、重量平均分子量２００万以上のポリビ
ニルピロリドンからなる曵糸性付与樹脂を添加すること
を特徴とする。In order to achieve the above object, the invention according to claim 1 of the present invention is an ink for an oil-based ballpoint pen which comprises at least a colorant, a binder resin and an organic solvent, and has a weight average molecular weight of 2,000,000. The above-mentioned spinnability imparting resin made of polyvinylpyrrolidone is added.
【０００７】本発明の請求項２に係わる発明は、ポリビ
ニルピロリドン樹脂の添加量が、０．１〜５重量％であ
ることを特徴とする。The invention according to claim 2 of the present invention is characterized in that the addition amount of the polyvinylpyrrolidone resin is 0.1 to 5% by weight.
【０００８】以下、本発明を詳細に説明する。着色剤
は、従来油性ボールペン用インキ組成物に用いている染
料または顔料を特に限定することなく用いることができ
る。具体的には染料としてはアルコール可溶性染料、油
溶性染料、直接染料、酸性染料、塩基性染料、含金染
料、及び各種造塩タイプの染料が使用可能である。ま
た、顔料としては有機、無機顔料のいずれも使用するこ
とができる。また、これらは単独、あるいは混合して使
用することができ、インキ組成物全量に対して５〜４０
重量％が好ましい。The present invention will be described in detail below. As the colorant, dyes or pigments conventionally used in ink compositions for oil-based ballpoint pens can be used without particular limitation. Specifically, as the dye, an alcohol-soluble dye, an oil-soluble dye, a direct dye, an acid dye, a basic dye, a metal-containing dye, and various salt-forming dyes can be used. Further, as the pigment, both organic and inorganic pigments can be used. Further, these can be used alone or in a mixture, and are 5 to 40 relative to the total amount of the ink composition.
Weight percent is preferred.
【０００９】バインダ樹脂は、上記着色剤の定着剤、イ
ンキ組成物の物性調整剤等の目的で使用するものであっ
て、従来油性ボールペン用インキに用いている樹脂を使
用することができる。具体的には、フェノール樹脂、ア
ミド樹脂、キシレン樹脂、水添ロジン樹脂、ケトン樹
脂、重量平均分子量が２００万未満のポリビニルピロリ
ドン樹脂等が挙げられる。これらは単独もしくは混合し
て使用することができ、インキ組成物全量に対して１〜
４０重量％が好ましい。The binder resin is used for the purpose of a fixing agent for the colorant, a physical property adjusting agent for the ink composition, and the like, and the resin conventionally used for oil-based ballpoint pen inks can be used. Specific examples thereof include a phenol resin, an amide resin, a xylene resin, a hydrogenated rosin resin, a ketone resin, and a polyvinylpyrrolidone resin having a weight average molecular weight of less than 2,000,000. These can be used alone or as a mixture, and can be 1 to the total amount of the ink composition.
40% by weight is preferred.
【００１０】有機溶剤は、着色剤の溶解または分散媒、
樹脂の溶媒、ペン先でのインキの乾燥防止等の目的で使
用され従来の油性ボールペン用インキ組成物に用いる有
機溶剤が使用できる。具体的には、ベンジルアルコー
ル、プロピレングリコール、ブチレングリコール等のア
ルコール系およびグリコール系、フェニルセロソルブ等
のセロソルブ系、フェニルカービトール等のカービトー
ル系、Ｎ−メチルピロリドン等の含窒素溶剤系が単独ま
たは混合して使用可能であり、これらはインキ組成物全
量に対して３０〜９０重量％が好ましい。The organic solvent is a solvent for dissolving or dispersing the colorant,
The solvent of the resin and the organic solvent used for the conventional ink composition for oil-based ballpoint pens, which is used for the purpose of preventing the ink from drying with the pen tip, can be used. Specifically, alcohol-based and glycol-based such as benzyl alcohol, propylene glycol, butylene glycol, cellosolve-based such as phenyl cellosolve, carbitol-based such as phenylcarbitol, and nitrogen-containing solvent-based solvent such as N-methylpyrrolidone, alone or mixed. It is also possible to use these in an amount of 30 to 90% by weight based on the total amount of the ink composition.
【００１１】曵糸性付与樹脂としての重量平均分子量２
００万以上のポリビニルピロリドンは、高速筆記追従
性、泣き・ぼてのない性能を改善する目的で使用される
ものであって、具体的にはＰＶＰ Ｋ−１２０（ＧＡＦ
社製、重量平均分子量２８０万）がある。添加量はイン
キ全量に対して０．１重量％より少なくては効果がな
く、５重量％より多くなると筆跡に線割れが発生しやす
くなるため、０．１〜５重量％が好ましい。Weight average molecular weight 2 as a resin for imparting spinnability
Polyvinylpyrrolidone of 1,000,000 or more is used for the purpose of improving the high-speed writing followability and the performance without crying or blurring. Specifically, PVP K-120 (GAF) is used.
Manufactured by the company, weight average molecular weight is 2.8 million). If the addition amount is less than 0.1% by weight with respect to the total amount of the ink, there is no effect, and if it is more than 5% by weight, line cracks are likely to occur in handwriting, so 0.1 to 5% by weight is preferable.
【００１２】本発明の油性ボールペン用インキ組成物は
上記必須成分の他に、必要に応じて界面活性剤、分散
剤、防錆剤、防菌剤、潤滑剤、ｐＨ調整剤、染料溶解安
定化剤等適宜選択してもよい。In addition to the above essential components, the oil-based ink composition for an oil-based ballpoint pen of the present invention may optionally contain a surfactant, a dispersant, a rust preventive, an antibacterial agent, a lubricant, a pH adjuster and a dye dissolution stabilizer. The agent or the like may be appropriately selected.
【００１３】[0013]
【作用】本発明に係わる油性ボールペン用インキ組成物
が何故、高速筆記追従性、筆記時の泣き・ぼてのない性
能が大幅に向上し、油性ボールペンとして好適であるか
については、以下のように推察される。すなわち、本発
明で使用する曵糸性付与樹脂は、従来使用されているＰ
ＶＰＫ−９０（重量平均分子量１２０万）に比べ略２倍
以上の超高分子である。このため油性ボールペン用イン
キに添加した場合にインキの凝集力をより大きくするこ
とができる。凝集力が大きいとインキの糸曵き性が大き
くなり、筆記ボールの速い回転にもインキが連続して引
き出されて途切れ難くなる。このためボールペンにした
ときインキ続きがよくなり高速筆記追従性が改善され
る。また、泣き・ぼては筆記ボールが回転する際、その
ボールに付着した余剰インキがボールペンチップ内に戻
らない場合に発生するが、インキの凝集力が大きいとそ
の糸曵き性により余剰のインキをボールペンチップ内に
引き戻す力が大きくなり、いわゆるインキのリターン効
果が高まって泣き・ぼてのない性能が大幅に改善され
る。したがって、重量平均分子量２００万以上のポリビ
ニルピロリドンからなる曵糸性付与樹脂を添加すること
により、油性ボールペンに好適なインキ組成物を提供す
ることが可能となった。The reason why the ink composition for oil-based ballpoint pens according to the present invention is significantly improved in high-speed writing followability and performance without crying or blurring during writing and is suitable as an oil-based ballpoint pen is as follows. Be inferred. That is, the spinnability imparting resin used in the present invention is P
It is an ultra-high polymer that is about twice as much as VPK-90 (weight average molecular weight 1.2 million). Therefore, when added to the oil-based ballpoint pen ink, the cohesive force of the ink can be further increased. If the cohesive force is large, the ink plucking property becomes great, and the ink is continuously drawn out even when the writing ball rotates rapidly, and it is difficult to break the ink. For this reason, when the ballpoint pen is used, ink continuity is improved and high-speed writing followability is improved. When the writing ball rotates, crying and fluffing also occur when the excess ink attached to the ball does not return to the inside of the ballpoint pen tip.However, if the cohesive force of the ink is large, the excess ink may be removed due to its stringability. The force of pulling back into the ball-point pen tip is increased, the so-called ink return effect is enhanced, and the performance without crying or dropping is greatly improved. Therefore, by adding the spinnability imparting resin composed of polyvinylpyrrolidone having a weight average molecular weight of 2,000,000 or more, it becomes possible to provide an ink composition suitable for an oil-based ballpoint pen.
【００１４】[0014]
【実施例】以下、本発明の実施例、比較例を示す。 実施例１ ニグロシンＥＸ ３０．０重量％ （オリエント化学工業（株）製） ハイラック１１１ ４．０重量％ （ケトン樹脂、日立化成（株）製） オレイン酸 ５．０重量％ フェニルグリコール ４８．５重量％ ベンジルアルコール １２．０重量％ ＰＶＰ Ｋ−１２０ ０．５重量％ 上記成分のうち、まずフェニルグリコール、ベンジルア
ルコール、オレイン酸を秤取、６０℃に加温後ハイラッ
ク１１１を加え攪拌し溶解させた後、ＰＶＰＫ−１２０
を攪拌しながら添加し完全に溶解させる。最後にニグロ
シンＥＸをままこにならないように攪拌を行いながら添
加し、添加終了後２時間加温攪拌を行いニグロシンＥＸ
を完全に溶解させ、黒色の油性ボールペン用インキを調
製した。このインキの２０℃における粘度をＢＨ型粘度
計、Ｎｏ．２ロータを用い、２０ｒｐｍの回転数で測定
したところ、約６，０００ｍＰａ・ｓであった。EXAMPLES Examples and comparative examples of the present invention will be shown below. Example 1 Nigrosine EX 30.0% by weight (manufactured by Orient Chemical Industry Co., Ltd.) Hirac 111 4.0% by weight (ketone resin, manufactured by Hitachi Chemical Co., Ltd.) Oleic acid 5.0% by weight Phenylglycol 48.5 % By weight benzyl alcohol 12.0% by weight PVP K-120 0.5% by weight Of the above components, first weigh out phenyl glycol, benzyl alcohol, and oleic acid, heat to 60 ° C., add Hirac 111 and stir to dissolve. After making it, PVPK-120
Is added while stirring and completely dissolved. Finally, nigrosine EX was added while stirring so that it would not be left untouched, and after the addition was completed, the mixture was heated and stirred for 2 hours to perform nigrosine EX.
Was completely dissolved, and a black oil-based ink for a ballpoint pen was prepared. The viscosity of this ink at 20 ° C. was measured with a BH type viscometer, No. When it was measured at a rotation speed of 20 rpm using two rotors, it was about 6,000 mPa · s.
【００１５】実施例２ ニグロシンＥＸ ３０．０重量％ ハイラック１１１ １０．０重量％ オレイン酸 ５．０重量％ フェニルグリコール ４３．５重量％ ベンジルアルコール １１．０重量％ ＰＶＰ Ｋ−１２０ ０．５重量％ 上記成分を実施例１と同様にして２０℃のインキ粘度約
２２,０００ｍＰａ・ｓの黒色油性ボールペン用インキ
とした。Example 2 Nigrosine EX 30.0 wt% Hirac 111 10.0 wt% Oleic acid 5.0 wt% Phenyl glycol 43.5 wt% Benzyl alcohol 11.0 wt% PVP K-120 0.5 wt % In the same manner as in Example 1, a black oil-based ballpoint pen ink having an ink viscosity at 20 ° C. of about 22,000 mPa · s was prepared.
【００１６】比較例１ ＰＶＰ Ｋ−１２０をＰＶＰ Ｋ−９０（重量平均分子
量１２０万）に変更した以外は全て実施例１と同様に行
い、２０℃のインキ粘度約５,５００ｍＰａ・ｓの黒色
油性ボールペン用インキを調製した。Comparative Example 1 All procedures were carried out in the same manner as in Example 1 except that PVP K-120 was changed to PVP K-90 (weight average molecular weight: 1.2 million), and black oiliness with an ink viscosity at 20 ° C. of about 5,500 mPa · s was obtained. An ink for a ballpoint pen was prepared.
【００１７】比較例２ ＰＶＰ Ｋ−１２０をＰＶＰ Ｋ−９０に変更した以外
は全て実施例２と同様に行い、２０℃のインキ粘度約１
９,０００ｍＰａ・ｓの黒色油性ボールペン用インキを
調製した。Comparative Example 2 The same procedure as in Example 2 was repeated except that PVP K-120 was changed to PVP K-90, and the ink viscosity at 20 ° C. was about 1.
A black oil-based ink for a ballpoint pen of 9,000 mPa · s was prepared.
【００１８】上記実施例１〜２、比較例１〜２のインキ
をそれぞれボールペン（商品名「ＢＰ−Ｓ、（株）パイ
ロット製、１．０ｍｍ径のボールを備えたステンレス製
ボールペンチップ）に詰め試験を行った。結果を以下に
示す。Each of the inks of Examples 1 and 2 and Comparative Examples 1 and 2 was packed in a ballpoint pen (trade name "BP-S, manufactured by Pilot Co., Ltd., stainless steel ballpoint pen tip equipped with a 1.0 mm diameter ball"). The test was conducted, and the results are shown below.
【００１９】[0019]
【表１】 [Table 1]
【００２０】高速筆記追従性：筆記試験機を用い、筆記
角度７０度、荷重４００ｇ、筆記速度１６〜２２ｍ／ｍ
ｉｎで２０ｍ連続らせん書きを行ったときの追従性を測
定した。試料数は各インキ４本。 ○：４本中４本とも線切れなく良好 △：４本中１本に線切れ発生 ×：４本中２本以上に線切れ発生High-speed writing followability: Using a writing tester, a writing angle of 70 degrees, a load of 400 g, and a writing speed of 16 to 22 m / m.
The followability when spiral writing was performed for 20 m in was measured. The number of samples is 4 for each ink. ◯: All 4 lines out of 4 were good without line breaks Δ: Line breakage occurred in 1 out of 4 lines x: Line breakage occurred in 2 or more lines out of 4 lines
【００２１】[0021]
【表２】 [Table 2]
【００２２】泣き：筆記試験機を用い、筆記角度７０
度、荷重２００ｇ、筆記速度４ｍ／ｍｉｎで１００ｍ連
続らせん書き後のボールペンチップ先端に溜まるインキ
を用紙にとりへらで引き伸ばし、泣きの量を測定し、限
度見本を参照して大、中、小を判定した。 ○：小以下 △：中 ×：大以上Crying: Using a writing tester, a writing angle of 70
Degree, load 200g, writing speed 4m / min at 100m continuous, after the spiral writing, the ink that collects at the tip of the ballpoint pen tip is spread on the paper with a spatula, the amount of crying is measured, and large, medium, or small is determined by referring to the limit sample. did. ○: Small or smaller △: Medium ×: Large or larger
【００２３】ボテ：筆記試験機を用い、筆記角度７０
度、荷重２００ｇ、筆記速度４ｍ／ｍｉｎで４本連続ら
せん書きを行い、１００ｍ当たりのボテの個数を測定
し、４本の平均値をとった。 ○：１個以上 △：１〜５個 ×：５個以上Bote: Using a writing tester, a writing angle of 70
Degree, load of 200 g, and writing speed of 4 m / min, four continuous spiral writings were performed, the number of bats per 100 m was measured, and the average value of the four was taken. ○: 1 or more △: 1 to 5 ×: 5 or more
【００２４】[0024]
【発明の効果】以上の結果から明らかなように、本発明
の油性ボールペン用インキ組成物は、いずれの試験項目
でも優れた性能を示し、筆記具用ボールペンのほか、Ｘ
Ｙプロッタ等の作図機に使用されるボールペンのインキ
に極めて有用なものである。As is clear from the above results, the ink composition for oil-based ballpoint pens of the present invention exhibits excellent performance in any of the test items.
It is extremely useful as ink for ballpoint pens used in drawing machines such as Y plotters.
Claims (2)
くともなる油性ボールペン用インキにおいて、重量平均
分子量２００万以上のポリビニルピロリドンからなる曵
糸性付与樹脂を添加することを特徴とする油性ボールペ
ン用インキ組成物。1. An oil-based ballpoint pen ink comprising at least a colorant, a binder resin and an organic solvent, wherein a spinnability imparting resin comprising polyvinylpyrrolidone having a weight average molecular weight of 2,000,000 or more is added. Composition.
量％である請求項１に記載の油性ボールペン用インキ組
成物。2. The ink composition for oil-based ballpoint pens according to claim 1, wherein the added amount of the spinnability imparting resin is 0.1 to 5% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6708395A JPH08239616A (en) | 1995-03-01 | 1995-03-01 | Oil-base ballpoint ink composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6708395A JPH08239616A (en) | 1995-03-01 | 1995-03-01 | Oil-base ballpoint ink composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08239616A true JPH08239616A (en) | 1996-09-17 |
Family
ID=13334637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6708395A Pending JPH08239616A (en) | 1995-03-01 | 1995-03-01 | Oil-base ballpoint ink composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08239616A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311388A (en) * | 1995-05-18 | 1996-11-26 | Pilot Corp:The | Ink for oily ball point pen and oily ball point pen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59217775A (en) * | 1983-05-24 | 1984-12-07 | Pentel Kk | Ink for ball point pen |
| JPH0841410A (en) * | 1994-07-27 | 1996-02-13 | Tombow Pencil Co Ltd | Ink composition for water-based ball point pen |
| JPH0848928A (en) * | 1994-08-09 | 1996-02-20 | Mitsubishi Pencil Co Ltd | Oil-base ink composition for ball-point pen |
| JPH08157765A (en) * | 1994-12-02 | 1996-06-18 | Pilot Corp:The | Oil-base ink composition for ball-point |
-
1995
- 1995-03-01 JP JP6708395A patent/JPH08239616A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59217775A (en) * | 1983-05-24 | 1984-12-07 | Pentel Kk | Ink for ball point pen |
| JPH0841410A (en) * | 1994-07-27 | 1996-02-13 | Tombow Pencil Co Ltd | Ink composition for water-based ball point pen |
| JPH0848928A (en) * | 1994-08-09 | 1996-02-20 | Mitsubishi Pencil Co Ltd | Oil-base ink composition for ball-point pen |
| JPH08157765A (en) * | 1994-12-02 | 1996-06-18 | Pilot Corp:The | Oil-base ink composition for ball-point |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311388A (en) * | 1995-05-18 | 1996-11-26 | Pilot Corp:The | Ink for oily ball point pen and oily ball point pen |
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