JP3139118B2 - Oil-based ink composition - Google Patents
Oil-based ink compositionInfo
- Publication number
- JP3139118B2 JP3139118B2 JP7882692A JP7882692A JP3139118B2 JP 3139118 B2 JP3139118 B2 JP 3139118B2 JP 7882692 A JP7882692 A JP 7882692A JP 7882692 A JP7882692 A JP 7882692A JP 3139118 B2 JP3139118 B2 JP 3139118B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- ink
- parts
- pen tip
- ink composition
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【産業上の利用分野】本発明はペン先耐乾燥性に優れた
油性インキ組成物に関し、更に詳細には、長時間キャッ
プをはずし放置しておいても、ペン先が乾燥しにくい油
性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 oil-based ink composition excellent in drying resistance of a pen tip, and more particularly, to an oil-based ink composition in which the pen tip is hard to dry even if the cap is left unplugged for a long time. It is about things.
【0002】[0002]
【従来の技術】従来、油性インキを使用した筆記具は、
紙・布等の吸収面やプラスチック、ガラス、金属等の非
吸収面のどちらにも筆記可能であり、しかも、速乾性が
あることから広く使用されている。また、近年、油性イ
ンキを低毒化するという検討が進み、溶剤としてアルコ
−ル系溶剤が用いられるようになってきている。しか
し、そのような安全性の高い油性インキ組成物は、溶剤
が蒸発しやすい。よって、このインキを使用した筆記具
をキャップをはずしたまま放置しておくと、インキ中の
溶剤がペン先から蒸発してしまう。ペン先でインキ中の
溶剤が蒸発してしまうと、染料や樹脂等がペン先の表面
や内部で析出し、詰まってしまい、ペン先からインキが
吐出しなくなってしまう。よって、筆跡がかすれたりし
て、筆記不可能になるといった問題があった。また、ア
ルコ−ル系溶剤に、比較的溶解しやすい油性含金属染料
を着色材として使用したものにおいても、満足のいくも
のは得られなかった。そこで、インキ中の溶剤が蒸発す
るのをより抑制するため、種々の高沸点溶剤や界面活性
剤などの乾燥防止剤をインキ中に添加し、ペン先を乾燥
し難くする検討がなされてきた。2. Description of the Related Art Conventionally, writing implements using oil-based inks are:
It is widely used because it can be written on both absorbent surfaces such as paper and cloth and non-absorbent surfaces such as plastic, glass and metal, and has quick drying properties. In recent years, studies have been made to reduce the toxicity of oil-based inks, and alcohol-based solvents have been used as solvents. However, such a highly safe oil-based ink composition tends to evaporate the solvent. Therefore, if the writing instrument using this ink is left with the cap removed, the solvent in the ink will evaporate from the pen tip. If the solvent in the ink evaporates at the pen tip, a dye, a resin or the like precipitates and clogs on the surface or inside of the pen tip, and the ink is not discharged from the pen tip. Therefore, there was a problem that the handwriting was faded and writing became impossible. Also, no satisfactory oil-based metal-containing dye was used as the coloring material, which was relatively soluble in alcohol solvents. Therefore, in order to further suppress the evaporation of the solvent in the ink, various anti-drying agents such as a high boiling point solvent and a surfactant have been added to the ink, and studies have been made to make the pen tip difficult to dry.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、アルコ
−ル系溶剤と油性含金属染料とを使用した油性インキに
おいては、高沸点溶剤や界面活性剤などの添加によって
も、効果は十分なものといえなかった。また、ペン先の
耐乾燥性を満足のいくものにしようと、界面活性剤をイ
ンキ中で大量に添加すると、ペン先からインキの漏れが
発生したり、筆跡ににじみが生じるという問題があっ
た。However, in an oil-based ink using an alcohol-based solvent and an oil-based metal-containing dye, the effect can be said to be sufficient even if a high-boiling solvent or a surfactant is added. Did not. In addition, if a large amount of a surfactant is added to the ink in an attempt to achieve satisfactory drying resistance of the pen tip, there is a problem that ink leaks from the pen tip or bleeds in handwriting. .
【0004】[0004]
【課題を解決するための手段】炭素数4以下のアルコ−
ル系溶剤と油性含金属染料と下記一般式(化2)にて示
される有機化合物とより少なくともなる油性インキ組成
物を要旨とする。An alcohol having 4 or less carbon atoms is used.
SUMMARY OF THE INVENTION The gist of the present invention is an oil-based ink composition comprising at least an oil-based solvent, an oil-based metal-containing dye and an organic compound represented by the following general formula (Formula 2).
【0005】[0005]
【化2】 Embedded image
【0006】油性含金属染料は着色剤として使用するも
のであり、通常の油性染料より、着色力が強く、耐水・
耐光といった堅牢性がよいといった利点がある。具体的
にはバリファ−ストブラック3804、同3806、同
3808、同3810、同3820、同3840、バリ
ファ−ストイエロ−3104、バリファ−ストレッド3
304、同3305(以上オリエント化学工業株式会社
製)、アイゼンスピロンブラックBHスペシャル、同G
SHスペシャル、アイゼンスピロンイエロ−GRH、ア
イゼンスピロンレッドBEH、同GEH(以上保土谷化
学工業株式会社製)などが挙げられ、これらの一種もし
くは二種以上混合して使用できる。使用量はインキ全量
に対して5〜25重量%が好ましい。[0006] The oil-based metal-containing dye is used as a coloring agent, and has a stronger coloring power than ordinary oil-based dyes,
It has the advantage of having good fastness such as light fastness. Specifically, varifa black 3804, 3806, 3808, 3810, 3820, 3840, varifa stoier-3104, varifa stred 3
304, 3305 (all manufactured by Orient Chemical Co., Ltd.), Eizen Spiron Black BH Special, G
SH Special, Aizen Spiron Yellow-GRH, Aizen Spiron Red BEH, and GEH (both manufactured by Hodogaya Chemical Industry Co., Ltd.), etc., and these can be used alone or in combination of two or more. The amount used is preferably from 5 to 25% by weight based on the total amount of the ink.
【0007】炭素数4以下のアルコ−ル系溶剤はインキ
溶剤として使用するものであり、具体的にはメタノ−
ル、エタノ−ル、n−プロパノ−ル、イソプロパノ−
ル,n−ブタノ−ル、イソブタノ−ルなどが挙げられ、
これらは、一種もしくは二種以上混合して使用できる。
その使用量はインキ全量に対して40〜90重量%が好
ましい。Alcohol solvents having 4 or less carbon atoms are used as ink solvents. Specifically, methanol solvents are used.
, Ethanol, n-propanol, isopropanol
And n-butanol and isobutanol.
These can be used alone or in combination of two or more.
The amount used is preferably 40 to 90% by weight based on the total amount of the ink.
【0008】上記、一般式(化2)にて示される有機化
合物は、この有機化合物を添加した油性インキを使用し
た筆記具のキャップをはずし放置した場合のペン先の乾
燥を抑制するために使用するものであり、具体的には、
3−メチル−3−メトキシブタノ−ル、3−メチル−3
メトキシペンタノ−ルなどである。市販品として、ソル
フィット(クラレイソプレンケミカル株式会社製)があ
り、その添加量はインキ全量に対して1.0〜20.0
重量%が好ましい。ここで、(化2)におけるRとして
示したアルキル基の炭素数は、3以上になると水酸基と
メトキシ基の極性が弱くなるため、アルコ−ル系溶剤や
油性含金属染料との親和性が低くなり、好ましくない。The organic compound represented by the general formula (Chemical Formula 2) is used to suppress the drying of the pen tip when the writing implement using an oil-based ink to which the organic compound is added is taken off and left to stand. And specifically,
3-methyl-3-methoxybutanol, 3-methyl-3
And methoxypentanol. As a commercially available product, Solfit (manufactured by Kuraray Isoprene Chemical Co., Ltd.) is available.
% By weight is preferred. Here, when the number of carbon atoms of the alkyl group represented by R in (Chemical Formula 2) is 3 or more, the polarities of the hydroxyl group and the methoxy group become weak, so that the affinity with the alcohol-based solvent or the oil-based metal-containing dye is low. Is not preferred.
【0009】上記必須成分以外に、定着性付与剤、イン
キ粘度調整剤として従来より使用されている天然・合成
樹脂が使用でき、具体的には、ロジン、ロジンエステ
ル、ロジン変性グリセリンエステル、ロジン変性マレイ
ン酸樹脂、ロジン変性フェノ−ル樹脂、ロジン変性フェ
ノ−ルグリセリンエステルなどのロジン系樹脂、エチル
セルロ−ス、ニトロセルロ−ス等のセルロ−ス樹脂、石
油系樹脂、ケトン樹脂、フェノ−ル樹脂などが挙げられ
る。具体的には、ロジン系樹脂として、ガムロジンww
(中国製)、フェノ−ル樹脂として、タマノル100s
(荒川化学工業製)、ケトン樹脂として、ヒタノ−ル1
501(日立化成株式会社)等があり、これらの使用量
はインキ全量に対して1〜30重量%が好ましい。さら
に、必要に応じて防錆剤、湿潤剤、粘度調整剤、消泡
剤、界面活性剤など、種々の添加剤を適宣使用出来る。In addition to the above-mentioned essential components, natural / synthetic resins conventionally used as a fixability-imparting agent and an ink viscosity modifier can be used. Specifically, rosin, rosin ester, rosin-modified glycerin ester, rosin-modified Rosin resins such as maleic acid resin, rosin-modified phenol resin, rosin-modified phenol glycerin ester, cellulose resins such as ethyl cellulose and nitrocellulose, petroleum resins, ketone resins, phenol resins, etc. Is mentioned. Specifically, gum rosin ww is used as a rosin resin.
(Manufactured in China), Tamanol 100s as phenol resin
(Manufactured by Arakawa Chemical Industries), as a ketone resin,
501 (Hitachi Chemical Co., Ltd.) and the like, and the use amount thereof is preferably 1 to 30% by weight based on the total amount of the ink. Further, various additives such as a rust inhibitor, a wetting agent, a viscosity modifier, an antifoaming agent, a surfactant and the like can be appropriately used as needed.
【0010】[0010]
【作用】本発明の油性インキ組成物が何故、ペン先耐乾
燥性に優れ、筆跡のかすれを防止するかについては、以
下のように推察される。本発明で使用する上記一般式
(化2)で示される有機化合物は、その特異な極性を持
った分子構造のため、蒸発速度が遅く、また、油性含金
属染料に対し特異的な可溶化力を持つ。すなわち、ペン
先において、炭素数4以下のアルコ−ル系溶剤と油性含
金属染料を程良く親和させ、染料の析出を防止するた
め、インキのペン先における乾燥を抑制するものと推察
される。The reason why the oil-based ink composition of the present invention has excellent pen tip drying resistance and prevents blurring of handwriting is presumed as follows. The organic compound represented by the above general formula (Chemical Formula 2) used in the present invention has a low evaporation rate due to its molecular structure having a specific polarity, and has a specific solubilizing power for an oily metal-containing dye. have. That is, it is presumed that the alcohol-based solvent having 4 or less carbon atoms and the oil-based metal-containing dye have a suitable affinity at the pen tip to prevent precipitation of the dye, thereby suppressing drying of the ink at the pen tip.
【0011】[0011]
【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、比較例中に単に「部」とあるのは「重
量部」を示す。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. In the Examples and Comparative Examples, "parts" means "parts by weight".
【0012】(実施例1) エタノ−ル 58.0部 イソプロピルアルコ−ル 10.0部 ガムロジンWW(ロジン系樹脂、中国製) 5.0部 バリファ−ストブラック3808(油性含金属染料、オリエント化学工業株式 会社製) 17.0部 ソルフィット(クラレイソプレンケミカル株式会社) 5.0部 ベンジルアルコ−ル 5.0部 上記各成分を混合し、市販の撹拌機で2時間撹拌するこ
とにより油性黒色インキを得た。(Example 1) Ethanol 58.0 parts Isopropyl alcohol 10.0 parts Gum rosin WW (rosin resin, made in China) 5.0 parts Varifast Black 3808 (oil-based metal-containing dye, Orient Chemical) 17.0 parts Solfit (Kuraray Isoprene Chemical Co., Ltd.) 5.0 parts Benzyl alcohol 5.0 parts The above components are mixed, and the mixture is stirred for 2 hours with a commercially available stirrer to obtain an oily black color. An ink was obtained.
【0013】(実施例2) エタノ−ル 28.0部 イソプロピルアルコ−ル 45.0部 タマノル100S(フェノ−ル樹脂 荒川化学工業株式会社製) 5.0部 バリファ−ストブラック3808 17.0部 ソルフィット(クラレイソプレンケミカル株式会社) 5.0部 上記各成分を混合し、市販の撹拌機で2時間撹拌するこ
とにより油性黒色インキを得た。(Example 2) 28.0 parts of ethanol 45.0 parts of isopropyl alcohol Tamanol 100S (phenol resin manufactured by Arakawa Chemical Industry Co., Ltd.) 5.0 parts 17.0 parts of varifast black 3808 Solfit (Kuraray Isoprene Chemical Co., Ltd.) 5.0 parts The above components were mixed and stirred with a commercially available stirrer for 2 hours to obtain an oily black ink.
【0014】(実施例3) エタノ−ル 65.0部 n−プロパノ−ル 10.0部 ヒタノ−ル1505(ケトン系樹脂、日立化成工業株式会社製) 5.0部 バリファ−ストレッド3305(油性含金属染料、オリエント化学工業株式会 社製) 10.0部 3−メチル−3−メトキシペンタノ−ル 5.0部 ハイソルブDM(ジエチレングリコ−ルモノメチルエ−テル、東邦化学工業( 株)製) 5.0部 上記各成分を混合し、市販の撹拌機で2時間撹拌するこ
とにより油性赤色インキを得た。(Example 3) Ethanol 65.0 parts n-propanol 10.0 parts Hitachil 1505 (ketone-based resin, manufactured by Hitachi Chemical Co., Ltd.) 5.0 parts Varifa Stread 3305 (oil-based) Metal-containing dye, manufactured by Orient Chemical Industry Co., Ltd.) 10.0 parts 3-methyl-3-methoxypentanol 5.0 parts Hisolve DM (diethylene glycol monomethyl ether, manufactured by Toho Chemical Industry Co., Ltd.) 0 parts The above components were mixed and stirred with a commercially available stirrer for 2 hours to obtain an oily red ink.
【0015】(比較例1)実施例1よりソルフィットを
除き、その量だけエタノ−ルを加えた以外は実施例1と
同様にして油性黒色インキを得た。Comparative Example 1 An oil-based black ink was obtained in the same manner as in Example 1 except that Solfit was removed from Example 1 and ethanol was added in that amount.
【0016】(比較例2)実施例2よりソルフィットを
除き、その量だけエタノ−ルを加えた以外は実施例2と
同様にして油性黒色インキを得た。Comparative Example 2 An oil-based black ink was obtained in the same manner as in Example 2 except that Solfit was removed from Example 2 and that amount of ethanol was added.
【0017】(比較例3)実施例3よりソルフィットを
除き、その量だけハイソルブDMを加えた以外は実施例
3と同様にして油性赤色インキを得た。(Comparative Example 3) An oil-based red ink was obtained in the same manner as in Example 3 except that Solfit was added to Example 3 and that amount of Highsolve DM was added.
【0018】(比較例4) エタノ−ル 32.0部 イソプロピルアルコ−ル 45.0部 タマノル100S(フェノ−ル樹脂 荒川化学工業株式会社製) 5.0部 バリファ−ストブラック3808 17.0部 デカグリン5−O(界面活性剤、ニッコ−ケミカルズ(株)製) 1.0部 上記各成分を混合し、市販の撹拌機で2時間撹拌するこ
とにより油性黒色インキを得た。(Comparative Example 4) Ethanol 32.0 parts Isopropyl alcohol 45.0 parts Tamanol 100S (phenol resin manufactured by Arakawa Chemical Industry Co., Ltd.) 5.0 parts Varifast Black 3808 17.0 parts 1.0 part of decagrin 5-O (surfactant, manufactured by Nikko Chemicals Co., Ltd.) 1.0 parts of the above components were mixed and stirred with a commercially available stirrer for 2 hours to obtain an oily black ink.
【0019】(比較例5)実施例2のソルフィットの代
わりにデカグリン5−Oを加えた以外は実施例2と同様
にして油性黒色インキを得た。Comparative Example 5 An oily black ink was obtained in the same manner as in Example 2 except that decagrin 5-O was added instead of Solfit.
【0020】[0020]
【発明の効果】実施例1〜3、比較例1〜5により得ら
れた油性インキを市販の中綿式筆記具(合成樹脂ペン
先、極細タイプ、MF50、ぺんてる(株)製)に充填
し、ペン先乾耐乾燥性、インキ漏れ、筆跡のにじみを試
験した結果を表1に示す。The oil-based inks obtained in Examples 1 to 3 and Comparative Examples 1 to 5 are filled in a commercially available batting-type writing implement (synthetic resin nib, extra-fine type, MF50, manufactured by Pentel Co., Ltd.) Table 1 shows the results of tests on drying resistance, drying resistance, ink leakage, and handwriting bleeding.
【0021】[0021]
【表1】 ペン先耐乾燥性:インキを充填した筆記具のキャップを
はずして室内(温度20℃、湿度50%)に放置し、3
0分毎に筆記し、筆跡がかすれるまでの時間を測定し
た。 インキ漏れ:前記インキを充填した筆記具を50℃、2
4時間放置し、ペン先からのインキの漏れ具合を目視に
より評価した。○−漏れなし、×−漏れ有り。 筆跡にじみ:前記インキを充填した筆記具により、10
cmの線を筆記し、目視により筆跡のにじみ具合を評価
した。○−にじみなし、×−にじみ有り。[Table 1] Pen tip drying resistance: Remove the cap of the writing implement filled with ink, leave it indoors (temperature 20 ° C, humidity 50%),
Writing was performed every 0 minutes, and the time until handwriting was blurred was measured. Ink leakage: writing implement filled with the ink at 50 ° C, 2
It was left for 4 hours, and the degree of ink leakage from the pen tip was visually evaluated. ○-no leakage, x-leakage. Handwriting bleeding: 10 points with a writing instrument filled with the ink.
A line of cm was written and the degree of bleeding of the handwriting was visually evaluated. ○ -No bleed, x-bleed.
【0022】以上のように、本発明の油性インキ組成物
は、筆記具に使用した際、ペン先耐乾燥性に優れたもの
であり、キャップをはずし放置した際の筆跡のカスレが
少なく、更に、ペン先からのインキの漏れや筆跡のにじ
みも生じない実用性に優れたものである。As described above, the oil-based ink composition of the present invention, when used in a writing instrument, is excellent in the drying resistance of the pen tip, and has little blur of handwriting when the cap is removed and left. It is excellent in practicality without causing ink leakage from the pen tip and blurring of handwriting.
Claims (1)
含金属染料と下記一般式(化1)にて示される有機化合
物とより少なくともなる油性インキ組成物。 【化1】 1. An oil-based ink composition comprising at least an alcohol solvent having 4 or less carbon atoms, an oil-based metal-containing dye, and an organic compound represented by the following general formula (1). Embedded image
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7882692A JP3139118B2 (en) | 1992-02-28 | 1992-02-28 | Oil-based ink composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7882692A JP3139118B2 (en) | 1992-02-28 | 1992-02-28 | Oil-based ink composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05239397A JPH05239397A (en) | 1993-09-17 |
JP3139118B2 true JP3139118B2 (en) | 2001-02-26 |
Family
ID=13672641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7882692A Expired - Lifetime JP3139118B2 (en) | 1992-02-28 | 1992-02-28 | Oil-based ink composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3139118B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001074956A1 (en) * | 2000-04-03 | 2001-10-11 | Mitsubishi Pencil Co., Ltd. | Oil-based ball-pen ink composition and oil-based ball pen |
-
1992
- 1992-02-28 JP JP7882692A patent/JP3139118B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH05239397A (en) | 1993-09-17 |
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