JPH03153779A - Core material of water color pencil - Google Patents

Abstract

PURPOSE:To obtain an excellent writability and resistance to moisture absorption as well as a sufficient breaking strength and improve the solubility of written characters in water by compounding a polyoxyethylene-polyoxypropylene condensate as at least a part of a surfactant. CONSTITUTION:The title core material mainly comprises a water-sol. binder, a lubricant, a body, a pigment, and a surfactant, and the surfactant contains a polyoxyethylene-polyoxypropylene condensate of formula 1 as at least a part of it. The polyoxyethylene-polyoxypropylene condensate, pref. having hydrophobic groups (polypropylene glycol) with a mol.wt. of 1200-2300 and an ethylene oxide content in total molecules of 30-70%, is compounded pref. in an amt. of 5-15%.

Description

Translated fromJapanese

【発明の詳細な説明】（産業上の利用分野）本発明は、水溶性結合材、滑剤１体質材、顔料。[Detailed description of the invention](Industrial application field)The present invention relates to a water-soluble binder, a lubricant, and a pigment.

界面活性剤を主材として使用し、該界面活性剤の少な（
とも一部としてポリオキシエチレン−ポリオキシプロピ
レン縮合物を用いることにより、特に耐吸湿性にすぐれ
、且つ十分な折損強度を有し、更には描画跡が水による
良溶解性を示す絵の具に類似した水彩色鉛筆芯。A surfactant is used as the main material, and a small amount of the surfactant (
By using a polyoxyethylene-polyoxypropylene condensate as a part of the product, it has particularly excellent moisture absorption resistance and sufficient breakage strength, and furthermore, the drawing marks are similar to paints that are well soluble in water. Watercolor pencil lead.

（従来の技術）従来のこの種の水彩色鉛筆芯としては、組成上水溶性結
合材と水溶性染料を含むことからなる染料タイプ、ある
いは界面活性剤を組成上用いることで水溶性を保持させ
ることを特徴とした顔料タイプ等が一般的であるが、耐
吸湿性、折損強度。(Prior Art) Conventional watercolor pencil leads of this type are either dye-type pencils containing a water-soluble binder and water-soluble dye, or a surfactant is used in the composition to maintain water-solubility. Pigment types with characteristics such as moisture absorption resistance and breakage strength are common.

描画跡の水による溶解性、並びに耐光性、外観形状、書
き味３着色性といった品質を十分に保有するまでに至っ
ていない。It has not yet reached the point where it has sufficient qualities such as water solubility of drawing traces, light resistance, appearance shape, and writing quality and colorability.

（発明が解決しようとする課題）このようにして得られた従来の水彩色鉛筆芯は、染料タ
イプでは水に不溶の固形状の滑剤を使用し水溶性染料に
よってのみ描画跡の水による溶解性を制御しているので
、これの良好なものは水溶性染料の含有量が多く経日変
化による芯の吸湿及び折損強度の低下、描画跡の褪色、
更には芯乾燥時の縦割れ発生による外観形状不良といっ
た種々の問題が存在した。また顔料タイプについては界
面活性剤の種類あるいは添加量による効果、即ち描画跡
の水による溶解性で優れた効力を発揮するものはもとも
と芯折損強度が弱く経日変化により吸湿が進行し更に一
層それは低下するなどの欠点があった。(Problems to be Solved by the Invention) The conventional watercolor pencil lead obtained in this way uses a solid lubricant that is insoluble in water in the dye type, and only the water-soluble dye reduces the solubility of the drawing traces in water. Since it is controlled, good products have a high content of water-soluble dyes, which causes moisture absorption of the lead and decrease in breakage strength due to aging, fading of drawing traces,
Furthermore, there were various problems such as poor appearance and shape due to the occurrence of vertical cracks during core drying. Regarding pigment types, the effect of the type or amount of surfactant added, in other words, those that exhibit excellent efficacy due to the solubility of the drawn trace in water originally have a weak core breakage strength, and moisture absorption progresses over time, making it even more difficult. There were drawbacks such as a decline in

（課題を解決するための手段）本発明は、従来の水彩色鉛筆芯に既存する問題点を解決
するとともにあらゆる物性を有効に保持させようという
ものである。(Means for Solving the Problems) The present invention aims to solve the problems existing in conventional watercolor pencil leads and to effectively maintain all physical properties.

これらの課題を解決するために、ポリビニルアルコール
、ポリアセクール、メチルセルロース、エチルセルロー
ス等水溶性結合材と、油脂、ワックス、高級脂肪酸等滑
剤と、タルク、酸化チタン。To solve these problems, we developed water-soluble binders such as polyvinyl alcohol, polyacecool, methyl cellulose, and ethyl cellulose, lubricants such as oils, waxes, and higher fatty acids, and talc and titanium oxide.

炭酸カルシウム等体質材と、顔料と、界面活性剤を主材
として使用し、該界面活性剤の少なくとも一部として疎
水基、ｔｌ！水の鎖長を自由に変えることが可能なポリ
オキシエチレン−ポリオキシプロピレン縮合物を添加し
た。A dielectric material such as calcium carbonate, a pigment, and a surfactant are used as main materials, and at least a portion of the surfactant contains a hydrophobic group, tl! A polyoxyethylene-polyoxypropylene condensate whose water chain length can be freely changed was added.

ポリオキシエチレン−ポリオキシプロピレン縮合物は、
疎水基分子量が１．２００〜２，３００が好ましく　、
１４００〜２１００が最適で、且つ総分子中のエチレン
オキシド含有率が３０〜７０％が好ましく、４０〜６０
％が最適であり、本指定範囲外のポリオキシエチレン−
ポリオキシプロピレン縮合物を使用した場合には描画跡
の水による溶解性の減少及び／または経口変化による芯
の吸湿進行による折損強度の低下の表面化という短所を
有した。Polyoxyethylene-polyoxypropylene condensate is
The hydrophobic group molecular weight is preferably 1.200 to 2,300,
1400 to 2100 is optimal, and the ethylene oxide content in the total molecule is preferably 30 to 70%, and 40 to 60%.
% is optimal, and polyoxyethylene outside this specified range
When a polyoxypropylene condensate is used, there are disadvantages in that the solubility of the drawing marks decreases due to water and/or the breakage strength decreases as the core absorbs moisture due to oral changes.

またポリオキシエチレン−ポリオキシプロピレン縮合物
の組成上の含有比は５〜１５％が好ましく、それが５％
未満であれば描画跡の水による溶解性が低下し筆記タッ
チが堅く着色性が劣り、それが１５％を越えると描画跡
の水による溶解性は向上するものの芯品質の経口変化即
ち吸湿による折損強度の低下が観察された。In addition, the content ratio of the polyoxyethylene-polyoxypropylene condensate in the composition is preferably 5 to 15%, and 5%
If it is less than 15%, the solubility of the drawing mark with water will decrease, the writing touch will be hard and the coloring will be poor, and if it exceeds 15%, the solubility of the drawing mark with water will improve, but the quality of the lead will change or breakage due to moisture absorption. A decrease in strength was observed.

珪石粉頗　料　　：ベンジジンイエロー界面活性剤：ポリオキシエチレン−ポリオキシプロピレ
ン縮合物１５部１５部８部（実施例）以下実施例に基づき、本発明を更に詳細に説明する。Silica powder material: Benzidine Yellow Surfactant: Polyoxyethylene-polyoxypropylene condensate 15 parts 15 parts 8 parts (Example) The present invention will be explained in more detail based on the following Examples.

〔実施例１〕水溶性結合材：ポリビニルアルコール滑　剤　　：カルナバワックスミリスチン酸Ｐ、Ｅ、Ｇ、“４０００体　質　材：リトポンタルク１５部５部１５部１０部８部２２部水溶性結合材：カルボキシメチルロースナトリウム塩ポリアセクール滑　剤　　ニライスワックスステアリン酸Ｐ、Ｅ、Ｇ、　”４０００体　質　材：沈降性炭酸カルシウムタルク珪藻土頗　料　　：ミロリブルー１５部３部４部１５部１２部７部２０部４部１０部界面活性剤：ポリオキシエチレンーポリオキシブロビレ
ン縮合物１０部顔　料　　：パーマネントレッド２Ｂ　　　１０部界面
活性剤：アルキルアリルスルフオネート１０部〔比較例１〕水溶性結合材：エチルセルロース滑　剤　　：モンタンワックスステアリン酸１３５Σパラフイン体　質　材：タルク酸化チタン水溶性染料；マラカイトグリーン〔比較例２〕水溶性結合材：トラカントガム滑　剤　　：パルミチン酸ステアリルアルコールセチルアルコール体質材：白土タルク１８部１０部１４部８部２０部１０部２０部前記配合組成物をニーグーミキサーにて混合後ロール処
理をほどこし、成形、乾燥工程を経て直径３鶴、長さ１
８５鶴の芯状物を作成した。これら芯についての書き味
及び着色性、耐光性、吸湿性、折損強度、描画跡の水に
よる溶解性、芯縦割れ発生の有無等諸物性比較は表−１
１表−２に示す通りである。[Example 1] Water-soluble binder: Polyvinyl alcohol Lubricant: Carnauba wax myristic acid P, E, G, "4000" Constitution material: Litopon talc 15 parts 5 parts 15 parts 10 parts 8 parts 22 parts Water-soluble binder: Carboxy Methylulose sodium salt polyacecool lubricant Nirice wax stearic acid P, E, G, 4000 Constitution Materials: Precipitated calcium carbonate talc diatomaceous earth Materials: Miloli blue 15 parts 3 parts 4 parts 15 parts 12 parts 7 parts 20 parts 4 parts 10 parts Surfactant: 10 parts of polyoxyethylene-polyoxybrobylene condensate Pigment: 10 parts of Permanent Red 2B Surfactant: 10 parts of alkylaryl sulfonate [Comparative Example 1] Water-soluble binder: Ethyl cellulose lubricant : Montan wax stearic acid 135Σ paraffin Materials: Talc titanium oxide Water-soluble dye; Malachite green [Comparative example 2] Water-soluble binder: Tracanth gum Lubricant: Palmitic acid stearyl alcohol Cetyl alcohol Body material: White clay Talc 18 parts 10 parts 14 Parts 8 parts 20 parts 10 parts 20 parts The above blended composition was mixed in a Nigoo mixer, then subjected to a roll treatment, molded and dried to form a shape with a diameter of 3 and a length of 1.
A core of 85 cranes was made. Table 1 compares the physical properties of these leads, including writing feel, coloring, light resistance, moisture absorption, breakage strength, solubility of drawing marks in water, and presence or absence of vertical core cracking.
It is as shown in Table 1-2.

１５部１６部８部８部１０部２３部表−１て変褪色を判定した。＃剣ジ邸４苅西用紙Ａ２号に試料
を左右方向、上下方向紙面が均一に塗りつぶされるよう
に反復して着色して作成したものを用いた。15 parts, 16 parts, 8 parts, 8 parts, 10 parts, 23 parts. #Kenjitei 4 Karanishi A sample was prepared by repeatedly coloring paper No. A2 so that the paper surface was filled in horizontally and vertically evenly.

０３→芯の状態で、常温、相対湿度８０％下に５日間保
存し、重量増加率によって示した。03→The core state was stored at room temperature and relative humidity of 80% for 5 days, and the weight increase rate was shown.

＄４→スパン３０Ｗ１室温２０℃にて測定。$4 → Span 30W1 Measured at room temperature 20℃.

１→耐光性の検色紙と同様に着色紙を作成し、水を含ん
だ絵筆で任意に着色面を摩擦し溶は具合を判定。1 → Create colored paper in the same way as light-fast color testing paper, and rub the colored surface arbitrarily with a water-soaked paintbrush to judge the degree of dissolution.

１−Ｏ染色堅ろう度試験用カーボンアーク燈形耐光試験
機を使用し一定時間横色祇を同時に露光し、試験前項色
紙を基準とし目視にょう（発明の効果）本発明は、書き味に優れ且つ着色力に富み、光による褪
色がなく、環境変化による芯の吸湿が非常に小さく、十
分な折損強度を保有し、描画跡の水による溶解性が優れ
た水彩色鉛筆芯を得るに至った。Using a carbon arc lamp type light fastness tester for 1-O dye fastness test, the horizontal and vertical colors were exposed simultaneously for a certain period of time, and the color was visually observed using the colored paper in the previous section as a reference (Effect of the invention) The present invention has an excellent writing quality. In addition, a watercolor pencil lead has been obtained which is rich in coloring power, does not fade due to light, has very little moisture absorption by the lead due to environmental changes, has sufficient breakage strength, and has excellent solubility of drawing traces in water.

Claims (3)

Translated fromJapanese

【特許請求の範囲】[Claims]（１）水溶性結合材、滑剤、体質材、顔料、界面活性剤
を主材として使用し、該界面活性剤の少なくとも一部と
して下記化学構造を有するポリオキシエチレン−ポリオ
キシプロピレン縮合物を用いることを特徴とする水彩色
鉛筆芯。▲数式、化学式、表等があります▼(1) A water-soluble binder, a lubricant, an extender, a pigment, and a surfactant are used as main materials, and at least a part of the surfactant is a polyoxyethylene-polyoxypropylene condensate having the following chemical structure. A watercolor pencil lead that is characterized by: ▲Contains mathematical formulas, chemical formulas, tables, etc.▼（２）ポリオキシエチレン−ポリオキシポリピレン縮合
物は、疎水基（ポリプロピレングリコール）分子量が１
，２００〜２，３００で、且つ総分子中のエチレンオキ
シド含有率が３０〜７０％であることを特徴とする特許
請求の範囲第１項記載水彩色鉛筆芯。(2) The polyoxyethylene-polyoxypolypyrene condensate has a hydrophobic group (polypropylene glycol) molecular weight of 1
, 200 to 2,300, and the ethylene oxide content in the total molecule is 30 to 70%.（３）ポリオキシエチレン−ポリオキシプロピレン縮合
物の配合組成上の含有比が５〜１５％からなる特許請求
範囲第１項及び第２項記載の水彩色鉛筆芯。(3) The watercolor colored pencil lead according to claims 1 and 2, wherein the content ratio of the polyoxyethylene-polyoxypropylene condensate in the blend composition is 5 to 15%.