JP2864386B2 - Aqueous ink composition - Google Patents

Aqueous ink composition

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Publication number
JP2864386B2
JP2864386B2 JP21683389A JP21683389A JP2864386B2 JP 2864386 B2 JP2864386 B2 JP 2864386B2 JP 21683389 A JP21683389 A JP 21683389A JP 21683389 A JP21683389 A JP 21683389A JP 2864386 B2 JP2864386 B2 JP 2864386B2
Authority
JP
Japan
Prior art keywords
ink composition
aqueous ink
ink
hlb
parts
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 - Fee Related
Application number
JP21683389A
Other languages
Japanese (ja)
Other versions
JPH0379682A (en
Inventor
博美 佐野
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 JP21683389A priority Critical patent/JP2864386B2/en
Publication of JPH0379682A publication Critical patent/JPH0379682A/en
Application granted granted Critical
Publication of JP2864386B2 publication Critical patent/JP2864386B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、水性インキ組成物に関するものであり、更
に詳細には、生インキ式筆記具に用いて特に好適な、合
成樹製部品に対する濡れが良く、かつペン先からのイン
キのボタ落ちが発生しない水性インキ組成物に関するも
のである。
Description: BACKGROUND OF THE INVENTION The present invention relates to an aqueous ink composition, and more particularly, to an aqueous ink composition which is particularly suitable for use in a raw ink type writing instrument and has a wettability to synthetic wood parts. The present invention relates to an aqueous ink composition which is good and does not cause dropping of ink from a pen tip.

[従来の技術] 従来、生インキ式筆記具は、ペン先とインキタンクと
の間に、例えば縦断面櫛歯状の所謂蛇腹のような合成樹
脂によって形成されたペン芯を配しており、インキはイ
ンキタンクよりペン芯を通りペン先に流出するものであ
るが、インキタンク中の空気が膨張しインキタンク中の
水性インキ組成物がペン先方向に過剰に吐出した場合、
このインキ組成物を前記ペン芯の縦断面櫛歯状部として
形成された毛細管部に保持させてペン先よりのインキ組
成物のボタ落ちを防止している。従って、水性インキ組
成物は前記インキタンクより容易に流出し、更に前記ペ
ン芯の毛細管部に速やかに浸透できるようにインキタン
ク及びペン芯に対する濡れが良好である必要があり、そ
の為水性インキ組成物には界面活性剤やエチレングリコ
ール、ヘキシレングリコールのような表面張力の低い水
溶性有機溶剤を添加し、その表面張力を下げていた。
[Prior Art] Conventionally, a raw ink type writing instrument has a pen core formed of a synthetic resin such as a so-called bellows having a comb-like longitudinal cross section between a pen tip and an ink tank. Is flowing out from the ink tank to the pen tip through the pen core, but when the air in the ink tank expands and the aqueous ink composition in the ink tank is discharged excessively in the pen tip direction,
The ink composition is held in a capillary section formed as a comb-shaped vertical cross section of the pen core to prevent the ink composition from dropping from the pen tip. Therefore, the aqueous ink composition needs to have good wettability with respect to the ink tank and the pen core so that the aqueous ink composition can easily flow out of the ink tank and further quickly penetrate into the capillary portion of the pen core. A surfactant or a water-soluble organic solvent having a low surface tension, such as ethylene glycol or hexylene glycol, was added to the product to lower the surface tension.

[発明が解決しようとする課題] しかしながら、上記の界面活性剤を用いた場合、水性
インキ組成物の表面張力が低くなりすぎ、逆にペン先か
らのインキ組成物のボタ落ちが発生し易くなるという問
題があり、また、前記の水溶性有機溶剤を添加した場
合、インキ粘度が高くなり、ペン先よりのインキ吐出が
悪くなってしまうという問題があった。
[Problems to be Solved by the Invention] However, when the above-mentioned surfactant is used, the surface tension of the aqueous ink composition becomes too low, and conversely, the ink composition easily falls off from the pen tip. In addition, when the above-mentioned water-soluble organic solvent is added, there is a problem that the viscosity of the ink becomes high and the ink discharge from the pen tip becomes poor.

[課題を解決するための手段] そこで本発明者は、上記問題を解決するために鋭意研
究を行なった結果、本発明を完成するに到ったものであ
る。即ち、本発明は、オキシ・トリフェニルメタン系染
料と、HLB19.0〜20.0のポリオキシエチレンアルキルエ
ーテル又はポリオキシエチレンアルキルフェニルエーテ
ルと、水とを少なくとも含む水性インキ組成物を要旨と
するものである。
[Means for Solving the Problems] The present inventor has conducted intensive studies to solve the above-mentioned problems, and as a result, has completed the present invention. That is, the gist of the present invention is an aqueous ink composition containing at least an oxytriphenylmethane dye, HLB 19.0 to 20.0 polyoxyethylene alkyl ether or polyoxyethylene alkyl phenyl ether, and water. is there.

以下、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.

オキシ・トリフェニルメタン系染料は着色剤として用
いるものである。
The oxy-triphenylmethane dye is used as a colorant.

具体例としては、アシッドフロキシンPB(C.I.4541
0),エオシンG(C.I.45380)、ローズベンガルB(C.
I.45440)などが挙げられる。
Specific examples include acid phloxin PB (CI4541
0), Eosin G (CI45380), Rose Bengal B (C.
I.45440).

上記各染料は、各々単独で使用することはもちろんの
こと、染料同志が反応しない限り混合して使用すること
もでき、その使用量は水性インキ組成物全量に対して0.
1〜30重量%が好ましい。
Each of the above-mentioned dyes can be used alone as well as mixed as long as the dyes do not react with each other, and the amount used is 0.
1-30% by weight is preferred.

HLB19.0〜20.0のポリオキシエチレンアルキルエーテ
ル又はポリオキシエチレンアルキルフェニルエーテル
は、ペン先からのインキのボタ落ちを発生することな
く、生インキ式筆記具の合成樹脂製部品に対するインキ
の濡れを良くするために用いるものである。
HLB 19.0 to 20.0 polyoxyethylene alkyl ether or polyoxyethylene alkyl phenyl ether improves the wetting of ink on synthetic resin parts of raw ink writing implements without causing ink dripping from the pen tip It is used for

具体例としては、ニッコールBL−21(HLB:19.0)、同
BL−25(HLB:19.5)、同BC−30TX(HLB:19.5)、同BC−
40TX(HLB:20.0、以上、ポリオキシエチレンアルキルエ
ーテル、日光ケミカルズ(株)製)、ニッコールNP−18
TX(HLB:19.0)、同NP−20(HLB:20.0)、同OP−30(HL
B:20.0以上、ポリオキシエチレンアルキルエーテル、日
光ケミカルズ(株)製)などがあり、これらは単独で、
また複数混合して用いることができ、その使用量は水性
インキ組成物全量に対して0.001〜0.1重量%が好まし
い。
Specific examples include Nikkor BL-21 (HLB: 19.0),
BL-25 (HLB: 19.5), BC-30TX (HLB: 19.5), BC-
40TX (HLB: 20.0 or higher, polyoxyethylene alkyl ether, manufactured by Nikko Chemicals Co., Ltd.), Nikkor NP-18
TX (HLB: 19.0), NP-20 (HLB: 20.0), OP-30 (HL
B: 20.0 or more, polyoxyethylene alkyl ether, Nikko Chemicals Co., Ltd.)
A plurality of such inks can be used in combination, and the amount of the ink used is preferably 0.001 to 0.1% by weight based on the total amount of the aqueous ink composition.

水は主溶剤であり、その使用量はインキ全量に対して
70.0〜99.9重量%が好ましい。
Water is the main solvent, and its usage is based on the total amount of ink.
70.0 to 99.9% by weight is preferred.

その他、必要に応じて水溶性有機溶剤、PH調整剤、防
カビ剤、防錆剤、樹脂、消泡剤等を加えることもでき、
これらを混合撹拌して水性インキ組成物を得る。
In addition, if necessary, a water-soluble organic solvent, a pH adjuster, a fungicide, a rust inhibitor, a resin, an antifoaming agent, etc. can be added.
These are mixed and stirred to obtain an aqueous ink composition.

[作 用] 本発明に係る水性インキ組成物が何故生インキ式筆記
具用として用いた場合、ペン先からのインキのボタ落ち
を発生すること無く、合成樹脂製部品に対するインキの
濡れを良くするのかについては以下の様に推察される。
[Action] When the aqueous ink composition according to the present invention is used for a raw ink type writing instrument, why does the ink wet out of the synthetic resin parts without causing ink dropping from the pen tip? Is presumed as follows.

本発明の水性インキ組成物は、オキシ・トリフェニル
メタン系染料とHLB19.0〜20.0のポリオキシエチレンア
ルキルエーテル又はポリオキシエチレンアルキルフェニ
ルエーテルとを併用しているので、合成樹脂製部品に対
するインキの濡れが極めて良好になり、しかも、この場
合におけるインキの表面張力は、他の物質の組合わせに
比較してあまり下がらないため、インキのボタ落ちを起
こさない。
The aqueous ink composition of the present invention uses an oxytriphenylmethane dye and HLB 19.0 to 20.0 polyoxyethylene alkyl ether or polyoxyethylene alkyl phenyl ether in combination, so that the ink for synthetic resin parts can be used. The wetting becomes extremely good, and the surface tension of the ink in this case does not decrease so much as compared with the combination of other substances, so that the ink does not drop.

[実施例] 以下、実施例に従ってより詳細に説明するが、実施例
中「部」とあるのは「重量部」を示すものである。
EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. In the Examples, “parts” indicates “parts by weight”.

実施例1 エオシンG(C.I.45380、癸己化成(株)製) 3.00部 ジエチレングリコール 2.00部 ニッコールBC−30TX(HLB:19.5、非イオン系界面活性
剤、日光ケミカルズ(株)製) 0.02部 水 94.98部 上記各成分を混合し、40〜50℃に加温しながら撹拌す
ることにより、赤色の水性インキ組成物を得た。
Example 1 Eosin G (CI45380, manufactured by Kishi Kasei Co., Ltd.) 3.00 parts Diethylene glycol 2.00 parts Nikkor BC-30TX (HLB: 19.5, nonionic surfactant, manufactured by Nikko Chemicals Co., Ltd.) 0.02 parts Water 94.98 parts Each component was mixed and stirred while heating to 40 to 50 ° C. to obtain a red aqueous ink composition.

比較例1 実施例1のニッコールBC−30TXの代わりに水を加えた
他は、実施例1と同様にして赤色の水性インキ組成物を
得た。
Comparative Example 1 A red aqueous ink composition was obtained in the same manner as in Example 1 except that water was added instead of Nikkor BC-30TX of Example 1.

実施例2 アッシドフロキシンPB(C.I.45410,保土谷化学工業
(株)製) 2.00部 エチレングリコール 4.00部 ニッコールNP−20(HLB:20.0、非イオン系界面活性剤、
日光ケミカルズ(株)製) 0.05部 水 93.95部 上記各成分を混合し、室温にて撹拌することにより、
桃色の水性インキ組成物を得た。
Example 2 Acid Phloxine PB (CI45410, Hodogaya Chemical Industry Co., Ltd.) 2.00 parts Ethylene glycol 4.00 parts Nikkor NP-20 (HLB: 20.0, nonionic surfactant,
Nikko Chemicals Co., Ltd.) 0.05 parts Water 93.95 parts By mixing the above components and stirring at room temperature,
A pink aqueous ink composition was obtained.

比較例2 実施例2のニッコールNP−20の代わりにニッコールNP
−7.5(ポリオキシエチレンアルキルフェニルエーテ
ル、HLB:14.0、日光ケミカルズ(株)製)を加えた他
は、実施例2と同様にして桃色の水性インキ組成物を得
た。
Comparative Example 2 Instead of Nikkor NP-20 of Example 2, Nikkor NP
A pink aqueous ink composition was obtained in the same manner as in Example 2 except that -7.5 (polyoxyethylene alkylphenyl ether, HLB: 14.0, manufactured by Nikko Chemicals Co., Ltd.) was added.

[効 果] 以上、実施例1、2及び比較例1、2で得られた水性
インキ組成物を内径5mm、長さ50mmのポリエチレン製の
インキタンクに0.9g充填し、このインキタンクを、ペン
先と、ペン先後方に配置した、アクルニトリル−ブタジ
エン−スチレン樹脂製の縦断面櫛歯状部を有するペン芯
とを内包するペン体に装着しサンプルとし、試験を行な
った。
[Effects] As described above, 0.9 g of the aqueous ink compositions obtained in Examples 1 and 2 and Comparative Examples 1 and 2 were filled into a polyethylene ink tank having an inner diameter of 5 mm and a length of 50 mm. A sample was mounted on a pen body containing a tip and a pen core having a longitudinally-shaped comb-tooth-shaped portion made of an acronitrile-butadiene-styrene resin disposed behind the pen tip, and a test was performed.

結果は表1の通りである。 Table 1 shows the results.

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) C09D 11/00 - 11/20──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 6 , DB name) C09D 11/00-11/20

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】オキシ・トリフェニルメタン系染料と、HL
B19.0〜20.0のポリオキシエチレンアルキルエーテル又
はポリオキシエチレンアルキルフェニルエーテルと、水
とを少なくとも含む水性インキ組成物。
1. An oxytriphenylmethane dye and HL
A water-based ink composition comprising at least polyoxyethylene alkyl ether or polyoxyethylene alkyl phenyl ether of B19.0 to 20.0 and water.
JP21683389A 1989-08-23 1989-08-23 Aqueous ink composition Expired - Fee Related JP2864386B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21683389A JP2864386B2 (en) 1989-08-23 1989-08-23 Aqueous ink composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21683389A JP2864386B2 (en) 1989-08-23 1989-08-23 Aqueous ink composition

Publications (2)

Publication Number Publication Date
JPH0379682A JPH0379682A (en) 1991-04-04
JP2864386B2 true JP2864386B2 (en) 1999-03-03

Family

ID=16694611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21683389A Expired - Fee Related JP2864386B2 (en) 1989-08-23 1989-08-23 Aqueous ink composition

Country Status (1)

Country Link
JP (1) JP2864386B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2745455B2 (en) * 1995-05-01 1998-04-28 株式会社ツキネコ Vehicle for aqueous stamp ink, aqueous stamp ink and stamp stand
JP2006265520A (en) * 2005-02-24 2006-10-05 Pilot Ink Co Ltd Water-based ink composition for direct liquid-type writing utensil and direct liquid-type writing utensil containing the same
JP2006274017A (en) * 2005-03-29 2006-10-12 Pilot Ink Co Ltd Ink composition for use in pen-core type writing utensil and pen-core type writing utensil containing the same
JP4966510B2 (en) * 2005-04-12 2012-07-04 パイロットインキ株式会社 Direct liquid writing instrument
JP6796958B2 (en) * 2016-06-30 2020-12-09 株式会社パイロットコーポレーション Aqueous ink composition for writing instruments and writing instruments using it

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56103262A (en) * 1980-01-23 1981-08-18 Mitsubishi Pencil Co Ltd Aqueous ink for ball-point pen
JPS6047082A (en) * 1983-08-25 1985-03-14 Pilot Ink Co Ltd Water ink composition for ball point pen
JPS61281171A (en) * 1985-06-07 1986-12-11 Yoshiaki Koike Colored composition containing liquid crystal
JPS63162773A (en) * 1986-12-26 1988-07-06 Canon Inc Ink for ink jet recording and method of ink jet recording by using it

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
細田豊著,「新染料化学」,第1版,株式会社技法堂,昭和48年12月,p.271〜273

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Publication number Publication date
JPH0379682A (en) 1991-04-04

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