JPH0741723A - Ink for colored pencil lead - Google Patents

Ink for colored pencil lead

Info

Publication number
JPH0741723A
JPH0741723A JP20299893A JP20299893A JPH0741723A JP H0741723 A JPH0741723 A JP H0741723A JP 20299893 A JP20299893 A JP 20299893A JP 20299893 A JP20299893 A JP 20299893A JP H0741723 A JPH0741723 A JP H0741723A
Authority
JP
Japan
Prior art keywords
ink
solvent
pencil lead
colored
core
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.)
Granted
Application number
JP20299893A
Other languages
Japanese (ja)
Other versions
JP3274551B2 (en
Inventor
Taro Inui
太郎 乾
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.)
Pilot Precision KK
Original Assignee
Pilot Precision KK
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 Pilot Precision KK filed Critical Pilot Precision KK
Priority to JP20299893A priority Critical patent/JP3274551B2/en
Publication of JPH0741723A publication Critical patent/JPH0741723A/en
Application granted granted Critical
Publication of JP3274551B2 publication Critical patent/JP3274551B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Abstract

PURPOSE:To obtain an ink for a colored pencil lead not degradable on aging and remarkably improved in color developing and brightness of a colorant by using a polyoxyethylene alkylphenyl ether as a solvent of the ink. CONSTITUTION:A solvent contg. at least 45%, pref. 100%, polyoxyethylene alkylphenyl ether is used for dissolving or dispersing a colorant in preparing the objective ink, which is impregnated into a porous pencil lead body formed by high-temp. baking.

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、焼成型の色鉛芯に含浸
するインキに関するもので、詳しくはシャープペンシル
などに使用される細径色鉛芯に含浸されるインキに関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink for impregnating a color lead core of a firing type, and more particularly to an ink for impregnating a small diameter color lead core used in a mechanical pencil or the like.

【0002】[0002]

【従来の技術】従来、窒化硼素などの体質材と粘土など
の結合材を主成分として有機高分子化合物などを加えた
混練物を押出成型した後、高温で焼成し得られた白色芯
体の気孔中に染料からなるインキを含浸させて色鉛芯と
することは、すでに公知である。
2. Description of the Related Art Conventionally, a white core obtained by extruding a kneaded material obtained by extruding a kneading material containing a body material such as boron nitride and a binder such as clay as a main component, an organic polymer compound, etc. It is already known to impregnate pores with an ink containing a dye to form a colored lead core.

【0003】しかし、この種の色鉛芯は強度と発色濃度
が両立せず、多孔質芯体の気孔率を上げてインキ含浸量
を増せば発色濃度は向上するが、強度低下が避けられ
ず、逆に強度を確保するために多孔質芯体の気孔率を小
さくすると、インキ含浸量は減少し、極端な発色濃度の
低下をきたし、実用に不向きとなる。そこで、発色濃度
を向上させるために、染料の溶解度が高く、かつ不揮発
性の溶剤が使用されている。
However, this type of colored lead core does not have both strength and color density, and if the porosity of the porous core is increased to increase the amount of ink impregnated, the color density is improved, but a decrease in strength is unavoidable. On the contrary, if the porosity of the porous core body is reduced to secure the strength, the amount of ink impregnated decreases and the color density is extremely lowered, which is not suitable for practical use. Therefore, in order to improve the color density, a non-volatile solvent having high dye solubility is used.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、色鉛芯
にインキを含浸させた場合、気孔中のインキは外気と直
接接しているため、経時性の問題が生ずる。これは単に
不揮発性のものや多量の染料を溶解、分散する溶剤とい
うだけではなく、溶剤の粘度や色目が長期間の間に変化
しないものが望ましく、結果として筆跡の色調や書き味
を保持することとつながるのである。この意味で、従来
の色鉛芯用のインキに使用されている溶剤では、長期間
外気に接していると粘度や色目が変化し、そのため色鉛
芯の色調や書き味が劣化してしまうのである。
However, when the colored lead core is impregnated with the ink, the ink in the pores is in direct contact with the outside air, which causes a problem of aging. This is not only a non-volatile solvent or a solvent that dissolves and disperses a large amount of dye, but it is desirable that the viscosity and color of the solvent do not change over a long period of time, and as a result, the color tone and writing quality of the handwriting are retained. It is connected with things. In this sense, the solvent used in conventional inks for colored lead cores changes the viscosity and color when exposed to the atmosphere for a long period of time, which deteriorates the color tone and writing quality of the colored lead cores. is there.

【0005】[0005]

【課題を解決するための手段】本発明は、着色物質を溶
解または分散する溶剤として、特定の化合物を使用する
ことにより、経時変化による劣化がなく、着色物質の発
色性、鮮明性を著しく大巾に向上させた色鉛芯用インキ
を提供するものである。
According to the present invention, by using a specific compound as a solvent for dissolving or dispersing a coloring substance, there is no deterioration due to aging and the coloring property and sharpness of the coloring substance are remarkably increased. It is intended to provide a color lead core ink having an improved width.

【0006】本発明は、上記の観点から色鉛芯用インキ
における溶剤として、ポリオキシエチレンアルキルフェ
ニルエーテルを使用することを特徴とするもので、その
構造式は化1に示されるものである。
From the above viewpoint, the present invention is characterized by using polyoxyethylene alkylphenyl ether as a solvent in the color lead core ink, the structural formula of which is shown in Chemical formula 1.

【0007】[0007]

【化1】 [Chemical 1]

【0008】ここで、Rは炭素数1以上のアルキル基、
nは2以上であり、例えばポリオキシエチレンノニルフ
ェニルエーテル、ポリオキシエチレンオクチルフェニル
エーテル、ポリオキシエチレンドデシルフェニルエーテ
ル等が挙げられる。
Here, R is an alkyl group having 1 or more carbon atoms,
n is 2 or more, and examples thereof include polyoxyethylene nonylphenyl ether, polyoxyethylene octylphenyl ether, and polyoxyethylene dodecylphenyl ether.

【0009】本発明においては、ポリオキシエチレンア
ルキルフェニルエーテルを全溶剤中の45%(重量割
合)以上使用することが好ましく、他の溶剤を併用して
もよいが、特には100%が最も良好である。この量が
多くなればなるほど、経時劣化の少ない良好なインキと
なるのである。
In the present invention, it is preferable to use polyoxyethylene alkylphenyl ether in an amount of 45% (weight ratio) or more based on the total solvent, and other solvents may be used in combination, but 100% is particularly preferable. Is. The larger the amount, the better the ink with less deterioration over time.

【0010】併用できる溶剤としては、オレイン酸など
従来使用されている溶剤が挙げられ、また使用する着色
物質としては、塩基性染料、油溶性染料、酒精溶染料等
が好ましいが、超微細化顔料や加工顔料等も使用可能で
ある。
Solvents that can be used in combination include conventionally used solvents such as oleic acid, and as coloring substances to be used, basic dyes, oil-soluble dyes, alcohol-soluble dyes and the like are preferable, but ultrafine pigments. A processed pigment and the like can also be used.

【0011】本発明に用いる色鉛芯としては、従来公知
の焼成型色鉛芯で、窒化硼素、タルクなどの体質材と粘
土などの結合材、さらに必要に応じて顔料、有機高分子
化合物などを加えた混練物を押出成形した後、高温で焼
成して得られた多孔質芯体を用い、その気孔中に本発明
の溶剤を使用したインキを含浸する。
The colored lead core used in the present invention is a conventionally known calcined type colored lead core, which includes a body material such as boron nitride or talc and a binder such as clay, and if necessary, a pigment or an organic polymer compound. A kneaded product containing the above is extruded and then fired at a high temperature to obtain a porous core, and the pores thereof are impregnated with the ink containing the solvent of the present invention.

【0012】[0012]

【実施例】【Example】

実施例1 70℃に加熱したポリオキシエチレンノニルフェニルエ
ーテル65部に、スピロンレッドC−GH(保土ヶ谷化
学製)35部を加え、温度維持しながら充分に攪拌し、
濾過後赤色インキを得た。
Example 1 To 65 parts of polyoxyethylene nonylphenyl ether heated to 70 ° C., 35 parts of Spiron Red C-GH (manufactured by Hodogaya Chemical Co., Ltd.) was added and sufficiently stirred while maintaining the temperature.
A red ink was obtained after filtration.

【0013】実施例2 ポリオキシエチレンオクチルフェニルエーテル 75部 ビクトリアピュアーブルーベース(BASF社製) 25部 以上を、実施例1と同様にして青色インキを得た。Example 2 Polyoxyethylene octyl phenyl ether 75 parts Victoria Pure Blue Base (manufactured by BASF) 25 parts The same procedure as in Example 1 was carried out to obtain a blue ink.

【0014】実施例3 ポリオキシエチレンドデシルフェニルエーテル 45部 オレイン酸 20部 オイルオレンジ201(オリエント化学製) 35部 以上を、実施例1と同様にして橙色インキを得た。Example 3 Polyoxyethylene dodecyl phenyl ether 45 parts Oleic acid 20 parts Oil orange 201 (manufactured by Orient Chemical Co., Ltd.) 35 parts An orange ink was obtained in the same manner as in Example 1.

【0015】比較例1 実施例1において、ポリオキシエチレンノニルフェニル
エーテルをソルビタンセスキオレートに代えた以外は、
すべて実施例1と同様にして赤色インキを得た。
Comparative Example 1 In Example 1, except that sorbitan sesquioleate was used instead of polyoxyethylene nonylphenyl ether.
A red ink was obtained in the same manner as in Example 1.

【0016】比較例2 実施例1において、ポリオキシエチレンノニルフェニル
エーテルをポリオキシエチレンモノステアリートに代え
た以外は、すべて実施例1と同様にして赤色インキを得
た。
Comparative Example 2 A red ink was obtained in the same manner as in Example 1 except that polyoxyethylene nonylphenyl ether was replaced with polyoxyethylene monostearate.

【0017】比較例3 実施例1において、ポリオキシエチレンノニルフェニル
エーテルをグリセリルモノカプリレートに代えた以外
は、すべて実施例1と同様にして赤色インキを得た。
Comparative Example 3 A red ink was obtained in the same manner as in Example 1, except that glyceryl monocaprylate was used instead of polyoxyethylene nonylphenyl ether.

【0018】以上、各例で得たインキに窒化硼素と粘土
からなる白色芯を浸漬し、10時間、70℃で加温し
た。次に、インキが含浸された白色芯の表面に付着して
いる過剰のインキを有機溶剤で洗浄し、50℃、12時
間乾燥して各色鉛芯を得た。ここで、実施例1、2のイ
ンキを含浸した色鉛芯は、本発明の溶剤が100%使用
されているので、長期間の間、色調および書き味におい
て経時劣化が殆どなく、特に好ましい。
As described above, a white core made of boron nitride and clay was dipped in the ink obtained in each example and heated at 70 ° C. for 10 hours. Next, excess ink adhering to the surface of the white core impregnated with the ink was washed with an organic solvent and dried at 50 ° C. for 12 hours to obtain lead cores of each color. Here, the colored lead cores impregnated with the inks of Examples 1 and 2 are particularly preferable because the solvent of the present invention is used 100%, and there is almost no deterioration in color tone and writing quality over time for a long period of time.

【0019】[0019]

【発明の効果】本発明の色鉛芯用インキを使用した色鉛
芯は、いずれも鮮明な筆跡を示し、書き味も滑らかで、
消しゴムによる消去性も良好であった。また各例のイン
キを含浸した色鉛芯を、60℃、60日間送風乾燥器に
放置した後、取り出して状態および書き味を調べたとこ
ろ、比較例1、2、3で得た色鉛芯は、表面に染料の結
晶が析出し、シャープペンシルでの繰り出しが困難とな
り、また筆跡も薄くなり、書き味も硬くなった。これに
対し、実施例1、2、3で得た色鉛芯は、外観、筆跡、
書き味共に変化が見られなかった。以上、本発明のイン
キを含浸した色鉛芯は、経時的な変化が少なく、初期性
能を長時間維持できるという優れた特徴を有するもので
ある。
The colored lead cores using the ink for colored lead cores of the present invention all show clear handwriting and have a smooth writing taste.
The erasability with an eraser was also good. Further, the colored lead cores impregnated with the inks of the respective examples were left in a blow dryer at 60 ° C. for 60 days and then taken out to examine the state and the writing taste. The colored lead cores obtained in Comparative Examples 1, 2 and 3 were examined. , Crystals of the dye were deposited on the surface, making it difficult to feed it with a mechanical pencil, thinning the handwriting, and making the writing feel harder. On the other hand, the colored lead cores obtained in Examples 1, 2, and 3 are
There was no change in writing quality. As described above, the colored lead core impregnated with the ink of the present invention has the excellent characteristics that the change with time is small and the initial performance can be maintained for a long time.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 高温焼成してなる多孔質芯体の気孔中に
含浸させる色鉛芯用インキにおいて、着色物質を溶解ま
たは分散する溶剤として、ポリオキシエチレンアルキル
フェニルエーテルを全溶剤中の45%以上使用すること
を特徴とする色鉛芯用インキ。
1. A colored lead core ink for impregnating the pores of a porous core body obtained by firing at high temperature, wherein polyoxyethylene alkylphenyl ether is 45% of the total solvent as a solvent for dissolving or dispersing a coloring substance. Ink for a colored lead core characterized by being used as described above.
JP20299893A 1993-07-23 1993-07-23 Color lead core ink Expired - Fee Related JP3274551B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20299893A JP3274551B2 (en) 1993-07-23 1993-07-23 Color lead core ink

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20299893A JP3274551B2 (en) 1993-07-23 1993-07-23 Color lead core ink

Publications (2)

Publication Number Publication Date
JPH0741723A true JPH0741723A (en) 1995-02-10
JP3274551B2 JP3274551B2 (en) 2002-04-15

Family

ID=16466642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20299893A Expired - Fee Related JP3274551B2 (en) 1993-07-23 1993-07-23 Color lead core ink

Country Status (1)

Country Link
JP (1) JP3274551B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5911814A (en) * 1997-07-14 1999-06-15 Mitsubishi Pencil Kabushiki Kaisha Baked color pencil lead and process for producing the same
JP2002188034A (en) * 2000-12-21 2002-07-05 Mitsubishi Pencil Co Ltd Baked colored pencil lead
JP2021070724A (en) * 2019-10-29 2021-05-06 株式会社パイロットコーポレーション Color pencil lead

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5911814A (en) * 1997-07-14 1999-06-15 Mitsubishi Pencil Kabushiki Kaisha Baked color pencil lead and process for producing the same
JP2002188034A (en) * 2000-12-21 2002-07-05 Mitsubishi Pencil Co Ltd Baked colored pencil lead
JP2021070724A (en) * 2019-10-29 2021-05-06 株式会社パイロットコーポレーション Color pencil lead

Also Published As

Publication number Publication date
JP3274551B2 (en) 2002-04-15

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