JP5561917B2 - Oily correction fluid composition - Google Patents

Oily correction fluid composition Download PDF

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JP5561917B2
JP5561917B2 JP2008191056A JP2008191056A JP5561917B2 JP 5561917 B2 JP5561917 B2 JP 5561917B2 JP 2008191056 A JP2008191056 A JP 2008191056A JP 2008191056 A JP2008191056 A JP 2008191056A JP 5561917 B2 JP5561917 B2 JP 5561917B2
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mass
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coating film
general formula
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JP2010024415A (en
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昌尚 矢野
隆雄 小山
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Mitsubishi Pencil Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D10/00Correcting fluids, e.g. fluid media for correction of typographical errors by coating

Description

本発明は、水性インキのはじきを発生させず、上書き描線乾燥性、塗膜強度、塗布性、経時安定性に優れた油性修正液組成物に関する。   The present invention relates to an oil-based correction liquid composition that does not cause repellency of water-based ink and is excellent in overwriting stroke drying property, coating film strength, coating property, and stability over time.

一般に、修正液組成物は、筆記具の筆跡、複写機による複写像等を効果的に修正することができるものであり、酸化チタン等の白色顔料と結合剤である樹脂と溶媒とを主成分としたものであり、従来より、多種多様の修正液組成物が知られている。   In general, the correction liquid composition can effectively correct the handwriting of a writing instrument, a copy image by a copying machine, and the like, and a white pigment such as titanium oxide, a binder resin and a solvent as main components. Conventionally, a wide variety of correction fluid compositions are known.

例えば、粒子表面に有機ポリシロキサンを被着した白色顔料30〜80質量%、有機溶剤25〜60質量%、および該溶剤に可溶な結合剤3〜20質量%を含有することを特徴とする修正液(例えば、特許文献1参照)や、隠蔽材と、樹脂と、ポリエーテル変性ジメチルシロキサンと、水を少なくとも含む水性修正液(例えば、特許文献2参照)が知られている。   For example, it contains 30 to 80% by mass of a white pigment coated with an organic polysiloxane on the particle surface, 25 to 60% by mass of an organic solvent, and 3 to 20% by mass of a binder soluble in the solvent. A correction fluid (for example, see Patent Document 1), an aqueous correction liquid (for example, see Patent Document 2) containing at least a concealing material, a resin, a polyether-modified dimethylsiloxane, and water are known.

しかしながら、上記特許文献1の粒子表面に有機ポリシロキサンを被着した白色顔料含有修正液では、溶剤に可溶な結合剤3〜20質量%の中で、10質量%以上の結合剤が配合された場合は、水性ボールペンインキの上書き乾燥性は著しく低下するなどの課題がある。また、上記特許文献2記載の水性修正液では、水性であるため、修正塗膜の乾燥時間が長く、また、水性染料ボールペンインキでは修正塗膜に混色してしまうなどの課題があるのが現状である。
特開昭63−256666号公報(特許請求の範囲等) 特開平2002−294103号公報(特許請求の範囲、実施例等)
However, in the white pigment containing correction liquid in which the organic polysiloxane is coated on the particle surface of Patent Document 1, 10% by mass or more of the binder is blended in 3 to 20% by mass of the binder soluble in the solvent. In such a case, there is a problem that the overwrite drying property of the water-based ballpoint pen ink is remarkably lowered. Moreover, since the aqueous correction liquid described in Patent Document 2 is aqueous, the correction coating film has a long drying time, and the aqueous dye ball-point pen ink has problems such as color mixing in the correction coating film. It is.
JP-A 63-256666 (Claims etc.) Japanese Patent Laid-Open No. 2002-294103 (Claims, Examples, etc.)

本発明は、上記従来技術の課題及び現状等に鑑み、これを解消しようとするものであり、水性インキのはじきを発生させず、上書き描線乾燥性、塗膜強度、塗布性、経時安定性に優れた油性修正液組成物を提供することを目的とする。   The present invention is to solve this problem in view of the above-mentioned problems and the current state of the prior art, and does not cause the repelling of water-based ink. It is an object to provide an excellent oily correction liquid composition.

本発明者らは、上記従来の課題等に鑑み、これを解消しようとするものであり、少なくとも白色材と、有機溶剤と、樹脂と、有機変性ポリジメチルシロキサンとを含有する油性の修正液組成物において、各成分の含有量を特定の範囲等に設定することなどにより、上記目的の油性修正液組成物が得られることを見い出し、本発明を完成するに至ったのである。   In light of the above-described conventional problems, the present inventors intend to solve this problem, and an oily correction liquid composition containing at least a white material, an organic solvent, a resin, and an organically modified polydimethylsiloxane. In the product, it was found that the above-described oil-based correction liquid composition can be obtained by setting the content of each component in a specific range or the like, and the present invention has been completed.

すなわち、本発明は、次の(1)〜()に存する。
(1) 少なくとも白色材30〜60質量%と、有機溶剤20〜70質量%と、下記一般式(I)で示される(メタ)アクリル酸エステル93〜99質量部、及び下記一般式(II)で示される塩基性含窒素モノマーを0.4質量部以上、2質量部未満の範囲で含有して、共重合して得られるアクリル系合成樹脂(固形分)3〜10質量%と、下記一般式(V)又は(VI)で示される有機変性ポリジメチルシロキサン(固形分)0.1〜1.5質量%とを含有することを特徴とする油性修正液組成物。

Figure 0005561917
Figure 0005561917
Figure 0005561917
Figure 0005561917
(2) 上記(1)に記載の油性修正液組成物において、樹脂(固形分)の含有量が4〜8質量%、有機変性ポリジメチルシロキサン(固形分)の含有量が0.2〜1.0質量%であることを特徴とする油性修正液組成物。
(3) 25℃、相対湿度65%下において、上記(1)又は(2)記載の油性修正液組成物を塗布乾燥後の塗膜上に、水性インキで上書き筆記後の描線乾燥時間が60秒以内であることを特徴とする油性修正液組成物。 That is, this invention exists in following (1)-( 3 ).
(1) At least 30 to 60% by mass of a white material, 20 to 70% by mass of an organic solvent, 93 to 99 parts by mass of a (meth) acrylic acid ester represented by the following general formula (I), and the following general formula (II) in indicated the basic nitrogen-containing monomer and 0.4 parts by mass or more, contained in a range of less than 2 parts by weight, copolymerization to obtain the acrylic synthetic resin (solid) and 3 to 10 wt%, the following general An oil-based correction liquid composition comprising 0.1 to 1.5% by mass of an organically modified polydimethylsiloxane (solid content) represented by the formula (V) or (VI) .
Figure 0005561917
Figure 0005561917
Figure 0005561917
Figure 0005561917
(2) In the oily correction liquid composition described in (1) above, the content of the resin (solid content) is 4 to 8% by mass, and the content of the organically modified polydimethylsiloxane (solid content) is 0.2 to 1. Oil-based correction fluid composition characterized by being 0.0% by mass.
(3) At 25 ° C. and a relative humidity of 65%, the oil-based correction liquid composition described in (1) or (2) above is applied onto the coating film after drying, and the drawing drying time after overwriting with water-based ink is 60. An oily correction liquid composition characterized by being within seconds.

本発明によれば、水性インキのはじきを発生させず、上書き描線乾燥性、塗膜強度、塗布性、経時安定性に優れた油性修正液組成物が提供される。   According to the present invention, there is provided an oil-based correction liquid composition that does not cause repelling of water-based ink and is excellent in overwriting stroke drying property, coating film strength, coating property, and stability over time.

以下に、本発明の実施の形態を詳しく説明する。
本発明の油性修正液組成物は、少なくとも白色材30〜60質量%と、有機溶剤20〜70質量%と、樹脂(固形分)3〜10質量%と、有機変性ポリジメチルシロキサン(固形分)0.1〜1.5質量%とを含有することを特徴とするものである。
Hereinafter, embodiments of the present invention will be described in detail.
The oily correction liquid composition of the present invention comprises at least 30 to 60% by weight of a white material, 20 to 70% by weight of an organic solvent, 3 to 10% by weight of a resin (solid content), and an organically modified polydimethylsiloxane (solid content). It contains 0.1 to 1.5% by mass.

本発明に用いる白色材は、隠蔽性を付与するものであり、二酸化チタンや酸化亜鉛などの隠蔽性の高い白色顔料などを使用することができ、隠蔽力、使用性などの点から二酸化チタンを好適に用いることができる。
二酸化チタンは、ルチル型、アナターゼ型のいずれも用いることができ、ルチル型としては、例えば、石原産業社製の「R-780」、「R-820」、「CR−50」、「CR−93」、デュポン社製の「R−900」、「R−931」、テイカ社製の「JR−701」、「JR−600」、「JR−801」、チタン工業社製の「KR−380」、「KR−380N」、「KR−460」などを用いることができ、また、アナターゼ型としては石原産業社製の「A−100」、「A−220」、テイカ社製の「JA−3」、「JA−5」、堺化学社製の「KA−10」、「KA−20」などを用いることができる。
The white material used in the present invention imparts concealing properties, and white pigments with high concealing properties such as titanium dioxide and zinc oxide can be used. From the viewpoint of concealing power and usability, titanium dioxide is used. It can be used suitably.
Titanium dioxide can be either a rutile type or an anatase type. Examples of the rutile type include “R-780”, “R-820”, “CR-50”, “CR-” manufactured by Ishihara Sangyo Co., Ltd. 93 ", DuPont" R-900 "," R-931 ", Teica" JR-701 "," JR-600 "," JR-801 ", Titanium Kogyo" KR-380 " ”,“ KR-380N ”,“ KR-460 ”and the like, and as anatase type,“ A-100 ”,“ A-220 ”manufactured by Ishihara Sangyo Co., Ltd.,“ JA- ”manufactured by Teika Co., Ltd. 3 ”,“ JA-5 ”,“ KA-10 ”,“ KA-20 ”manufactured by Sakai Chemical Co., Ltd., and the like can be used.

これらの白色材の含有量は、修正液組成物全量(100質量%、以下、単に「%」という)に対して、30〜60%、好ましくは、35〜55%とすることが望ましい。
この白色材の含有量が60%超過では、修正液の粘度が高くなり、塗布具での吐出が難しくなり、一方、30%未満では、十分な隠蔽性が得られなくなり、好ましくない。
また、所望に応じ、白色材には、微細シリカ、炭酸カルシウム、珪酸アルミニウム粉等を適宜組み合わせて使用してもよい。なお、隠蔽性の点から考慮すると、これらは白色材全量に対して(0〜)30%以下が好ましい。
The content of these white materials is 30 to 60%, preferably 35 to 55% with respect to the total amount of the correction liquid composition (100% by mass, hereinafter simply referred to as “%”).
When the content of the white material exceeds 60%, the viscosity of the correction liquid becomes high and it becomes difficult to discharge with the applicator. On the other hand, when the content is less than 30%, sufficient concealability cannot be obtained, which is not preferable.
Further, if desired, the white material may be used in appropriate combination of fine silica, calcium carbonate, aluminum silicate powder and the like. In view of concealment, these are preferably (0) to 30% or less based on the total amount of the white material.

本発明に用いる有機溶剤は、適正な乾燥速度を有し、用いる樹脂を溶解させるものであれば、特に限定されないが、好ましくは、水性インキや油性インキ、PPCトナーや熱転写リボン等の色材成分を溶解・滲出させにくい有機溶剤が望ましい。
これらの特性を有する有機溶剤としては、例えば、シクロパラフィン系溶剤、パラフィン系溶剤、シクロペンタン系溶剤の単独或いは二種以上混合して使用することができる。
シクロパラフィン系溶剤としては、例えば、シクロヘキサン、メチルシクロヘキサン、エチルシクロヘキサン等が挙げられ、パラフィン系溶剤としては、例えば、n−ヘプタン、3−メチルペンタン、2,2,4−トリメチルペンタン等が挙げられ、シクロペンタン系溶剤としては、例えば、メチルシクロペンタン、エチルシクロペンタン等が挙げられる。
The organic solvent used in the present invention is not particularly limited as long as it has an appropriate drying rate and dissolves the resin to be used. Preferably, the colorant component such as water-based ink, oil-based ink, PPC toner, or thermal transfer ribbon is used. It is desirable to use an organic solvent that hardly dissolves and exudes.
As the organic solvent having these characteristics, for example, a cycloparaffin solvent, a paraffin solvent, and a cyclopentane solvent can be used alone or in combination.
Examples of the cycloparaffinic solvent include cyclohexane, methylcyclohexane, and ethylcyclohexane, and examples of the paraffinic solvent include n-heptane, 3-methylpentane, 2,2,4-trimethylpentane, and the like. Examples of the cyclopentane solvent include methylcyclopentane and ethylcyclopentane.

これらの有機溶剤の含有量は、修正液組成物全量に対して、20〜70%、好ましくは、25〜70%、更に好ましくは、28〜67%が望ましい。
この有機溶剤の含有量が70%を超えると、塗膜固化までの乾燥時間が長くなり、使用性の点で劣ることとなり、一方、20%未満では、塗布具でのインキ吐出が少なくなったり、レベリング性の低下が起こりやすくなる。
The content of these organic solvents is 20 to 70%, preferably 25 to 70%, and more preferably 28 to 67% with respect to the total amount of the correction fluid composition.
When the content of the organic solvent exceeds 70%, the drying time until the coating film is solidified becomes long, and the usability is inferior. On the other hand, when the content is less than 20%, ink discharge in the applicator is reduced. , The leveling property tends to be lowered.

本発明に用いる樹脂は、二酸化チタン等の白色材の分散性向上、被吸収面への定着後の被膜強度の向上させるものであれば、特に限定されるものでないが、好ましくは、更なる分散性の向上、被膜の定着性及び被膜強度の更なる向上の点から、前記樹脂が、アクリル系樹脂であることが好ましく、特に、下記一般式(I)で示される(メタ)アクリル酸エステル93〜99質量部、及び下記一般式(II)で示される塩基性含窒素モノマーを0.4質量部以上、2質量部未満の範囲で含有して、共重合して得られるアクリル系合成樹脂であるものが望ましい。

Figure 0005561917
Figure 0005561917
The resin used in the present invention is not particularly limited as long as it improves the dispersibility of a white material such as titanium dioxide, and improves the film strength after fixing to the surface to be absorbed. The resin is preferably an acrylic resin from the standpoint of improving the properties, fixing properties of the coating, and coating strength, and in particular, the (meth) acrylic acid ester 93 represented by the following general formula (I): An acrylic synthetic resin obtained by copolymerizing with ~ 99 parts by mass and a basic nitrogen-containing monomer represented by the following general formula (II) in a range of 0.4 parts by mass or more and less than 2 parts by mass Some are desirable.
Figure 0005561917
Figure 0005561917

前記一般式(I)で示される(メタ)アクリル酸エステルとしては、例えば、メチルアクリレート、エチルアクリレート、プロピルアクリレート、イソプロピルアクリレート、イソブチルアクリレート、n−ブチルアクリレート、2−エチルヘキシルアクリレート、オクチルアクリレート、ラウリルアクリレート、セチルアクリレート、ステアリルアクリレート等のアクリレート類や、メチルメタクリレート、エチルメタクリレート、プロピルメタクリレート、イソプロピルメタクリレート、イソブチルメタクリレート、n−ブチルメタクリレート、2−エチルヘキシルメタクリレート、オクチルメタクリレート、ラウリルメタクリレート、セチルメタクリレート、ステアリルメタクリレート等のメタクリレート類などが挙げられる。これら(メタ)アクリル酸エステル類は、修正塗膜性能や顔料分散性能により各々単独使用でも2種類以上の使用でも差し支えない。
また、前記一般式(II)で示される塩基性含窒素モノマーとしては、例えば、N,N−ジメチルアミノエチルメタクリレート、N,N−ジメチルアミノエチルアクリレート、N,N−ジエチルアミノエチルメタクリレート、N,N−ジエチルアミノエチルアクリレート等が挙げられる。
更に、必要に応じて共重合成分として、スチレンモノマーを(0.1〜)5%未満で混入してもよい。このスチレンモノマーを共重合することにより、修正塗膜に可とう性のある塗膜を得ることができる。しかし、5%以上では、前述した溶剤への溶解性が低下する他、塗膜強度の低下が生じる。
Examples of the (meth) acrylic acid ester represented by the general formula (I) include methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, isobutyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, and lauryl acrylate. Acrylates such as cetyl acrylate and stearyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, isobutyl methacrylate, n-butyl methacrylate, 2-ethylhexyl methacrylate, octyl methacrylate, lauryl methacrylate, cetyl methacrylate, stearyl methacrylate, etc. And methacrylates. These (meth) acrylic acid esters may be used alone or in combination of two or more depending on the corrected coating film performance and pigment dispersion performance.
Examples of the basic nitrogen-containing monomer represented by the general formula (II) include N, N-dimethylaminoethyl methacrylate, N, N-dimethylaminoethyl acrylate, N, N-diethylaminoethyl methacrylate, N, N. -Diethylaminoethyl acrylate etc. are mentioned.
Furthermore, you may mix a styrene monomer with less than (0.1) -5% as a copolymerization component as needed. By copolymerizing this styrene monomer, it is possible to obtain a coating film having flexibility in the modified coating film. However, if it is 5% or more, the solubility in the solvent described above is lowered, and the coating strength is also lowered.

上記特性のアクリル系合成樹脂の製造方法は、従来より公知の溶液重合法によって製造することができる。この場合のアクリル系合成樹脂の好ましい重量平均分子量範囲は30,000〜200,000である。この重量平均分子量が30,000未満であると、修正塗膜に粘着性を帯び、再筆記性が悪くなる。反対に、重量平均分子量が200,000を超えると、修正液の粘度が高くなり、流動性が悪くなり、塗布性能が著しく低下する。適正な重量平均分子量範囲は、60,000〜150,000である。   The acrylic synthetic resin having the above characteristics can be produced by a conventionally known solution polymerization method. In this case, the preferred weight average molecular weight range of the acrylic synthetic resin is 30,000 to 200,000. When the weight average molecular weight is less than 30,000, the corrected coating film becomes sticky and the rewriteability is deteriorated. On the other hand, when the weight average molecular weight exceeds 200,000, the viscosity of the correction liquid becomes high, the fluidity is deteriorated, and the coating performance is remarkably lowered. A suitable weight average molecular weight range is 60,000-150,000.

特に好ましい上記共重合して得られるアクリル系合成樹脂としては、前記一般式(I)ではn−ブチルメタクリレート、イソブチルメタクリレート及びエチルメタクリレートからなる群から選ばれた少なくとも一種のモノマーとラウリルメタクリレート、n−ブチルアクリレート及び2−エチルヘキシルメタクリレートからなる群から選ばれた少なくとも一種のモノマーとの組み合わせが良く、前記一般式(II)ではN,N−ジメチルアミノエチルメタクリレート、N,N−ジエチルアミノエチルメタクリレートが、顔料分散性や粘度安定性の面で好ましい。   Particularly preferable acrylic synthetic resins obtained by copolymerization include at least one monomer selected from the group consisting of n-butyl methacrylate, isobutyl methacrylate and ethyl methacrylate in the general formula (I), lauryl methacrylate, n- A combination with at least one monomer selected from the group consisting of butyl acrylate and 2-ethylhexyl methacrylate is good. In the general formula (II), N, N-dimethylaminoethyl methacrylate and N, N-diethylaminoethyl methacrylate are pigments. It is preferable in terms of dispersibility and viscosity stability.

前記一般式(I)では99質量部超過で、分散安定性が低下し、93質量部未満で前記非極性溶剤類に対する溶解性が低下したり、修正塗膜が脆くなったりする。
前記一般式(II)では2.0質量部以上で、前記非極性溶剤類に対する溶解性が低下し、分散安定性や貯蔵安定性の低下、修正塗膜不良(ひび割れ、剥離)等が発生し、0.4質量部未満では二酸化チタンに対する樹脂吸着量が少なくなり、長期での分散安定性が低下する。
In the general formula (I), when 99 parts by mass is exceeded, the dispersion stability is lowered, and when it is less than 93 parts by mass, the solubility in the nonpolar solvents is lowered, or the corrected coating film becomes brittle.
In general formula (II) above 2.0 parts by mass, the solubility in the non-polar solvent is lowered, the dispersion stability and storage stability are lowered, and the corrected coating film is poor (cracked, peeled). If the amount is less than 0.4 parts by mass, the amount of resin adsorbed on titanium dioxide decreases, and the long-term dispersion stability decreases.

前記一般式(I)と前記一般式(II)の組み合わせで溶液重合し得られるアクリル樹脂などの樹脂(固形分換算)の含有量は、修正液組成物全量に対して、3〜10%、好ましくは、分散安定性、上書き乾燥性、塗膜強度の性能を勘案すると、4〜8%とすることが望ましい。
これらの樹脂の含有量が10%超過であると、水性インキの上書き乾燥性の効果が低下することとなり、一方、3%未満であると、分散安定性が低下し、修正塗膜の強度も低下することとなる。
Content of resin (solid content conversion) such as an acrylic resin obtained by solution polymerization with the combination of the general formula (I) and the general formula (II) is 3 to 10% with respect to the total amount of the correction fluid composition, Preferably, considering the dispersion stability, the overwrite drying property, and the strength of the coating film, 4 to 8% is desirable.
If the content of these resins is more than 10%, the effect of overwrite drying of the water-based ink will be reduced. On the other hand, if the content is less than 3%, the dispersion stability will be reduced, and the strength of the correction coating film will be reduced. Will be reduced.

本発明に用いる有機変性ポリジメチルシロキサンは、濡れ性を向上させ、水性インキのハジキを抑制するための重要な成分であると同時に、下地への濡れ性を向上させ、レベリング性の向上の働きを有するものである。
母体となるポリジメチルシロキサンは、下記一般式(III)で示され、本発明で使用する有機変性ポリジメチルシロキサンは下記一般式(IV)で示される。

Figure 0005561917
Figure 0005561917
The organically modified polydimethylsiloxane used in the present invention is an important component for improving wettability and suppressing repellency of water-based ink, and at the same time, improves wettability to the base and improves leveling properties. It is what you have.
The base polydimethylsiloxane is represented by the following general formula (III), and the organically modified polydimethylsiloxane used in the present invention is represented by the following general formula (IV).
Figure 0005561917
Figure 0005561917

用いる有機変性ポリジメチルシロキサンとしては、具体的には、下記一般式(V)又は(VI)に示されるように、分岐構造あるいは直鎖構造のものが挙げられ、これらはいずれを用いても構わない。

Figure 0005561917
Figure 0005561917
Specific examples of the organically modified polydimethylsiloxane to be used include those having a branched structure or a straight chain structure as shown in the following general formula (V) or (VI). Any of these may be used. Absent.
Figure 0005561917
Figure 0005561917

上記一般式(V)又は(VI)に示されるように、分岐構造あるいは直鎖構造中には有機変性部が1つ或いは2つを備えており、具体的には、エチレンオキサイド変性、プロピレンオキサイド変性、アラルキル変性、ポリエステル変性、ポリエーテル変性等が挙げられる。また、上記一般式(V)又は(VI)の構造中に示されるアルキル基(R6)はメチル基、エチル基のような炭素数1〜10のアルキル基を示しており、有機変性部の末端基(R7)としてアクリル基、カルボキシル基、水酸基等が挙げられる。
具体的には、ポリエーテル変性ポリジメチルシロキサン、ポリエーテル変性水酸基含有ポリジメチルシロキサン、ポリエステル変性ポリジメチルシロキサン、ポリエステル変性水酸基含有ポリジメチルシロキサン、ポリエーテルエステル変性ポリジメチルシロキサン、ポリエーテルエステル変性水酸基含有ポリジメチルシロキサン、エチレンオキサイド変性ポリジメチルシロキサン、プロピレンオキサイド変性ポリジメチルシロキサン、アラルキル変性ポリジメチルシロキサンなどの少なくとも1種(各単独又は2種以上の混合物)が挙げられる。
特に、有機変性部としてポリエーテル変性やポリエステル変性のものが、特に水性インキの乾燥性への更なる効果を示すものとなる。
As shown in the general formula (V) or (VI), the branched structure or the straight chain structure has one or two organically modified portions, specifically, ethylene oxide modified, propylene oxide. Examples include modification, aralkyl modification, polyester modification, and polyether modification. The alkyl group (R 6 ) shown in the structure of the general formula (V) or (VI) represents a C 1-10 alkyl group such as a methyl group or an ethyl group, Examples of the terminal group (R 7 ) include an acrylic group, a carboxyl group, and a hydroxyl group.
Specifically, polyether-modified polydimethylsiloxane, polyether-modified hydroxyl group-containing polydimethylsiloxane, polyester-modified polydimethylsiloxane, polyester-modified hydroxyl group-containing polydimethylsiloxane, polyetherester-modified polydimethylsiloxane, polyetherester-modified hydroxyl group-containing polymer Examples thereof include at least one (each alone or a mixture of two or more) such as dimethylsiloxane, ethylene oxide-modified polydimethylsiloxane, propylene oxide-modified polydimethylsiloxane, and aralkyl-modified polydimethylsiloxane.
In particular, those modified with polyether or polyester as the organic modified portion exhibit a further effect on the drying property of the water-based ink.

市販品では、BYK−Chemie社製のBYK−302,BYK−306,BYK−307,BYK−330,BYK−331,BYK−333,BYK−337,BYK−344(以上、ポリエーテル変性ポリジメチルシロキサン)、BYK−370(ポリエステル変性水酸基含有ポリジメチルシロキサン)、BYK−375(ポリエーテルエステル変性水酸基含有ポリジメチルシロキサン)、BYK−377(ポリエステル変性水酸基含有ポリジメチルシロキサン)、BYK−378(ポリエーテル変性ポリジメチルシロキサン)等を用いることができる。   Commercially available products include BYK-302, BYK-306, BYK-307, BYK-330, BYK-331, BYK-333, BYK-337, and BYK-344 (polyether-modified polydimethylsiloxane manufactured by BYK-Chemie). BYK-370 (polyester-modified hydroxyl group-containing polydimethylsiloxane), BYK-375 (polyetherester-modified hydroxyl group-containing polydimethylsiloxane), BYK-377 (polyester-modified hydroxyl group-containing polydimethylsiloxane), BYK-378 (polyether-modified) Polydimethylsiloxane) and the like can be used.

これらの有機変性ポリジメチルシロキサン(固形分換算)の含有量は、修正液組成物全量に対して、0.1〜1.5%、好ましくは、0.2〜1.0%が望ましい。
この有機変性ポリジメチルシロキサンの含有量が1.5%超過であると、経時安定性が低下し、修正塗膜の強度も低下することとなり、一方、0.1%未満であると、水性インキの上書き乾燥性の効果が得られないものとなる。
The content of these organically modified polydimethylsiloxane (in terms of solid content) is 0.1 to 1.5%, preferably 0.2 to 1.0%, based on the total amount of the correction liquid composition.
If the content of the organically modified polydimethylsiloxane is more than 1.5%, the temporal stability is lowered and the strength of the correction coating film is also lowered. On the other hand, if the content is less than 0.1%, the aqueous ink is used. Thus, the effect of overdrying cannot be obtained.

本発明の油性修正液組成物には、上記各成分以外にも必要に応じて、従来より修正液組成物に汎用されている公知の沈降抑制剤、粘度調整剤、重合防止剤、皮張り防止剤、着色顔料等を用いることができる。   In addition to the above components, the oily correction liquid composition of the present invention, if necessary, known precipitation inhibitors, viscosity modifiers, polymerization inhibitors, and anti-skinning conventionally used in correction liquid compositions. An agent, a color pigment, or the like can be used.

本発明の油性修正液組成物は、好ましくは、25℃、相対湿度65%下において、上記構成の油性修正液組成物を塗布乾燥後の塗膜上に、水性インキで上書き筆記後の描線乾燥時間を60秒以内となるものが望ましい。
一般に、紙面に筆記した文字等を修正するための修正液組成物を用いて文字等に修正液組成物を塗布すると、図1に示すように、ベナードセル現象(塗膜造成時に発生する対流現象)が生じることがある。この原因は、一般的には表面張力のムラ、揮発速度が速い(乾燥速度が速すぎる)、粘度が高いなど原因とされている。なお、図1中、球状のものが白色材(二酸化チタン)である。
このベナードセル現象等が生じた塗膜は、SEM画像で観察すると、表面層に樹脂が偏在化し、表面に厚い被膜層が形成されるため、塗膜強度は不十分となったり、並びに、水性インキのはじきを生じたり、これにより水性インキで上書き筆記した後の描線の乾燥時間は遅くなったりして、良好な塗膜が得られないものとなる。
The oil-based correction liquid composition of the present invention is preferably drawn-line-dried after overwriting with water-based ink on the coating film after applying and drying the oil-based correction liquid composition having the above constitution at 25 ° C. and 65% relative humidity. It is desirable that the time is within 60 seconds.
In general, when a correction liquid composition is applied to characters using a correction liquid composition for correcting characters written on paper, as shown in FIG. 1, Benard cell phenomenon (convection phenomenon that occurs during coating film formation) May occur. This is generally caused by uneven surface tension, high volatilization rate (drying rate is too high), high viscosity, and the like. In addition, in FIG. 1, a spherical thing is a white material (titanium dioxide).
When the coating film in which the Benard cell phenomenon or the like has occurred is observed with an SEM image, the resin is unevenly distributed on the surface layer, and a thick coating layer is formed on the surface. No repelling occurs, and thus the drying time of the drawn line after overwriting with water-based ink is delayed, and a good coating film cannot be obtained.

本発明の油性修正液組成物では、上記構成の白色材30〜60%と、有機溶剤20〜70%と、樹脂(固形分)3〜10%と、有機変性ポリジメチルシロキサン(固形分)0.1〜1.5%とを少なくとも含有する組成では、水性修正液に比べ乾燥速度が速いため、ベナードセル現象を生じさせることなく、水性インキのはじきを発生させず、上書き描線乾燥性、塗膜強度、塗布性、経時安定性に優れたものとなる。
特に、上記樹脂(固形分)を4〜8%、有機変性ポリジメチルシロキサン(固形分)を0.2〜1.0%に更に調製した油性修正液組成物は、上述の水性インキで上書き筆記後の描線乾燥時間を好適な時間内(60秒以内)に調整することができ、更に、樹脂種や有機変性ポリジメチルシロキサン種とを好適に組み合わせることにより、本発明の効果をより発揮する油性修正液組成物が得られるものとなる。
In the oily correction liquid composition of the present invention, the white material having the above-described structure 30 to 60%, the organic solvent 20 to 70%, the resin (solid content) 3 to 10%, and the organic modified polydimethylsiloxane (solid content) 0 In the composition containing at least 1 to 1.5%, the drying speed is faster than that of the aqueous correction liquid, so that the Benard cell phenomenon does not occur, the repelling of the water-based ink does not occur, and the overdrawing drawing dryness, the coating film Excellent strength, applicability, and stability over time.
In particular, the oil-based correction fluid composition further prepared by adjusting the resin (solid content) to 4 to 8% and the organic modified polydimethylsiloxane (solid content) to 0.2 to 1.0% is overwritten with the water-based ink described above. The oil-drawing which can adjust the drawing stroke drying time later within a suitable time (within 60 seconds), and further exhibits the effects of the present invention by suitably combining the resin species and the organically modified polydimethylsiloxane species. A correction fluid composition is obtained.

本発明の油性修正液組成物は、上述した各成分を上記各範囲の含有量等で混合分散機、例えば、ビーズミル、アトライター、ボールミル、サンドグラインダー等で混合分散することで得られる。   The oily correction liquid composition of the present invention can be obtained by mixing and dispersing the above-described components in a mixing and dispersing machine such as a bead mill, an attritor, a ball mill, a sand grinder or the like with a content in the above ranges.

このように構成される本発明の油性修正液組成物は、例えば、弁機構を有する修正液塗布具の収容部に充填して使用に供される。修正液塗布具としては、他に、加圧機構を有しないボールペン型の修正液塗布具や、加圧ポンピング機構を備えたノック式のボールペン型修正液塗布具、更に、加圧機構を有するキャップなしのノック式修正液塗布具などが挙げられる。   The oily correction fluid composition of the present invention configured as described above is used, for example, by filling the accommodation portion of a correction fluid applicator having a valve mechanism. Other correction fluid applicators include a ballpoint pen-type correction fluid applicator that does not have a pressure mechanism, a knock-type ballpoint pen-type correction fluid applicator that includes a pressure pumping mechanism, and a cap that includes a pressure mechanism. Non-knock type correction fluid applicator or the like.

次に、実施例及び比較例等により本発明を更に詳細に説明するが、本発明は下記実施例等に限定されるものではない。   Next, the present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to the following examples.

〔実施例1〜6及び比較例1〜6〕
下記表1及び表2に示す配合処方で、ボールミルにて16時間混合分散して、油性修正液組成物を調製した。
用いるアクリル系合成樹脂(A1)は、下記方法により調製したものを用いた。
得られた各油性修正液組成物について、下記評価方法により、分散安定性、水性インキの上書き乾燥性、塗膜強度を評価した。
[Examples 1-6 and Comparative Examples 1-6]
An oil-based correction liquid composition was prepared by mixing and dispersing for 16 hours in a ball mill with the formulation shown in Table 1 and Table 2 below.
The acrylic synthetic resin (A1) used was prepared by the following method.
About each obtained oil-based correction liquid composition, the dispersion stability, overwrite drying property of water-based ink, and coating film strength were evaluated by the following evaluation methods.

〔アクリル系合成樹脂(A1)の調製〕
温度計、攪拌混合機、加熱ジャケット、還流コンデンサー等を装着した800mlの反応容器に、イソブチルメタクリレート47部、n−ブチルアクリレート47部、スチレン4.5部、N,N−ジメチルアミノエチルメタクリレート0.6部、メチルシクロヘキサン150部を配合し、重合開始剤としてアゾビスイソブチロニトリル1部を加え、窒素ガス気流化において80℃で7時間溶液重合を行い、樹脂濃度約40%のアクリル系合成樹脂を得た。
[Preparation of acrylic synthetic resin (A1)]
In an 800 ml reaction vessel equipped with a thermometer, stirring mixer, heating jacket, reflux condenser, etc., 47 parts of isobutyl methacrylate, 47 parts of n-butyl acrylate, 4.5 parts of styrene, N, N-dimethylaminoethyl methacrylate 6 parts and 150 parts of methylcyclohexane are added, 1 part of azobisisobutyronitrile is added as a polymerization initiator, solution polymerization is carried out at 80 ° C. for 7 hours in a nitrogen gas stream, and an acrylic synthesis having a resin concentration of about 40%. A resin was obtained.

〔分散安定性の評価方法〕
マヨネーズ瓶に各修正液組成物を300ml入れ、50℃中に1ヶ月間静置保存した後、スパチュラにて再分散し、E型粘度計(トキメック社製TVE−20H・50rpm)にて室温下(25℃)で粘度測定を行い、製造直後の初期粘度値と比較して下記評価基準で評価した。
評価基準:
◎:粘度変化なし(0〜10mPa・s)
△:僅かに上昇(10〜20mPa・s)
×:著しい粘度上昇(20mPa・s以上)或いは凝集物がある
[Method for evaluating dispersion stability]
300 ml of each correction fluid composition was placed in a mayonnaise bottle and stored still at 50 ° C. for 1 month, then redispersed with a spatula and at room temperature using an E-type viscometer (TVE-20H, 50 rpm manufactured by Tokimec) The viscosity was measured at (25 ° C.) and compared with the initial viscosity value immediately after production, and evaluated according to the following evaluation criteria.
Evaluation criteria:
A: No change in viscosity (0 to 10 mPa · s)
Δ: Slight increase (10 to 20 mPa · s)
X: Significant increase in viscosity (20 mPa · s or more) or aggregates

〔水性インキの上書き乾燥性の各評価方法〕
事務用修正液JIS S 6055−1988の5.試験方法(25℃、相対湿度65%下)に準じて、試験を行った。
JIS指定の筆記用紙に、隙間50μmのフィルムアプリケーターで修正液を塗布し、水性ボールペン「ユニボールUB−200黒」(三菱鉛筆社製)にて通常に筆記し、所定時間後、指による擦過により水性ボールペンの描線乾燥状態を確認し、下記評価基準で評価した。
評価基準:
◎:60秒後の擦過で、文字の判別ができ、且つ汚れが無い。
○:120秒後の擦過で、文字の判別ができ、且つ汚れが無い。
△:120秒後の擦過で、文字の判別ができるが、汚れる。
×:120秒後の擦過で、文字の判別ができず、汚れる。
[Each evaluation method for overwrite drying of water-based ink]
Office correction fluid JIS S6055-19885. The test was conducted according to the test method (25 ° C., relative humidity 65% or lower).
Apply correction fluid to JIS-designated writing paper with a film applicator with a gap of 50 μm, and write normally with a water-based ballpoint pen “Uniball UB-200 Black” (Mitsubishi Pencil Co., Ltd.). The drawn state of the ballpoint pen was confirmed and evaluated according to the following evaluation criteria.
Evaluation criteria:
A: Characters can be discriminated by rubbing after 60 seconds and there is no dirt.
○: Characters can be discriminated by rubbing after 120 seconds and there is no dirt.
Δ: Characters can be discriminated by rubbing after 120 seconds, but they become dirty.
X: Characters cannot be identified due to rubbing after 120 seconds, resulting in contamination.

〔塗膜強度の評価方法〕
事務用修正液JIS S 6055−1988の5.試験方法に準じて、試験を行った。
JIS指定の筆記用紙に、隙間50μmのフィルムアプリケーターで修正液を塗布し、油性ボールペン「SA−S黒」(三菱鉛筆社製)にて螺旋を書き、修正塗膜の強度を確認し、下記評価基準で評価した。
評価基準:
◎:修正塗膜が削れず、紙面同様に筆記できる。
○:修正塗膜が僅かに削れるが、抵抗感なく筆記できる。
△:修正塗膜が僅かに削れたり、ペン先が沈み込んでしまうが、筆記は可能。
×:修正塗膜が崩れてしまい、筆記ができない。
[Method for evaluating coating strength]
Office correction fluid JIS S6055-19885. The test was conducted according to the test method.
Apply the correction liquid to the JIS-designated writing paper with a film applicator with a gap of 50 μm, write a spiral with an oil-based ballpoint pen “SA-S Black” (Mitsubishi Pencil Co., Ltd.), check the strength of the corrected coating film, and evaluate the following. Evaluated by criteria.
Evaluation criteria:
(Double-circle): A correction coating film is not shaved and it can write similarly to the paper surface.
○: Although the corrected coating film is slightly shaved, writing can be performed without a sense of resistance.
Δ: The corrected coating film is slightly shaved or the pen tip sinks, but writing is possible.
X: The corrected coating film collapses and cannot be written.

Figure 0005561917
Figure 0005561917

Figure 0005561917
Figure 0005561917

上記表1及び表2の結果から明らかなように、本発明の範囲となる実施例1〜6は、本発明の範囲外となる比較例1〜6に較べて、分散安定性、水性インキの上書き乾燥性、塗膜強度に優れていることが判明した。
比較例1〜6を具体的に見ると、比較例1及び2は、有機変性ポリジメチルシロキサンを含有しない組成であり、比較例3及び4は、樹脂の含有量が本発明の範囲から外れる組成であり、比較例5及び6は、有機変性ポリジメチルシロキサンの含有量が本発明の範囲から外れる組成であり、これらの場合は、本発明の効果を発揮できないことが判明した。
As is clear from the results of Tables 1 and 2, Examples 1 to 6 that are within the scope of the present invention are more stable in dispersion stability and water-based ink than Comparative Examples 1 to 6 that are outside the scope of the present invention. It was found that the film was excellent in overwrite drying property and coating film strength.
Looking specifically at Comparative Examples 1 to 6, Comparative Examples 1 and 2 are compositions that do not contain organically modified polydimethylsiloxane, and Comparative Examples 3 and 4 are compositions in which the resin content is outside the scope of the present invention. Comparative Examples 5 and 6 were compositions in which the content of the organically modified polydimethylsiloxane deviated from the scope of the present invention. In these cases, it was found that the effects of the present invention could not be exhibited.

〔試験例1〕
実施例1〜3、並びに、実施例4〜6の組成に準拠して、樹脂(固形分)の含有量、有機変性ポリジメチルシロキサン(固形分)の含有量を変動した場合の水性インキの上書き乾燥性、塗膜強度との関係を評価した。
図2は、樹脂(固形分)の含有量、有機変性ポリジメチルシロキサン(固形分)の含有量を変動した場合の水性インキの上書き乾燥性、塗膜強度との関係を示す評価結果の特性図である。
図2に示すように、Aの領域となる、樹脂(固形分)3〜10%、有機変性ポリジメチルシロキサン(固形分)0.1〜1.5%の範囲で、水性インキの上書き乾燥性と塗膜強度とに優れており、特にBの領域となる、樹脂(固形分)4〜8%、有機変性ポリジメチルシロキサン(固形分)0.2〜1.0%の範囲で、更に水性インキの上書き乾燥性が60秒以内であり、塗膜強度に優れていることが判った。
[Test Example 1]
Overwriting of water-based ink when the content of the resin (solid content) and the content of the organically modified polydimethylsiloxane (solid content) are changed in accordance with the compositions of Examples 1 to 3 and Examples 4 to 6 The relationship between drying properties and coating strength was evaluated.
Fig. 2 is a characteristic diagram of the evaluation results showing the relationship between the resin (solid content) content, the organic ink-modified polydimethylsiloxane (solid content) content and the overwrite drying property of the water-based ink, and the coating strength. It is.
As shown in FIG. 2, in the range of 3 to 10% of resin (solid content) and 0.1 to 1.5% of organically modified polydimethylsiloxane (solid content), which is the region A, overwrite drying property of water-based ink In particular, it is excellent in coating film strength, especially in the region of B, in the range of 4 to 8% of resin (solid content), 0.2 to 1.0% of organic modified polydimethylsiloxane (solid content), and further aqueous. It was found that the overwrite drying property of the ink was within 60 seconds and the coating film strength was excellent.

紙面に筆記した文字に修正液組成物を塗布した状態〔ベナードセル現象(塗膜造成時に発生する対流現象)〕を説明するための概略断面図である。It is a schematic sectional drawing for demonstrating the state [Benard cell phenomenon (convection phenomenon generate | occur | produced at the time of coating-film formation)] which applied the correction liquid composition to the character written on the paper surface. 実施例1〜3、並びに、実施例4〜6の組成に準拠して、樹脂(固形分)の含有量、有機変性ポリジメチルシロキサン(固形分)の含有量を変動した場合の水性インキの上書き乾燥性、塗膜強度の関係を示す特性図である。Overwriting of water-based ink when the content of the resin (solid content) and the content of the organically modified polydimethylsiloxane (solid content) are changed in accordance with the compositions of Examples 1 to 3 and Examples 4 to 6 It is a characteristic view which shows the relationship between drying property and coating film strength.

Claims (3)

少なくとも白色材30〜60質量%と、有機溶剤20〜70質量%と、下記一般式(I)で示される(メタ)アクリル酸エステル93〜99質量部、及び下記一般式(II)で示される塩基性含窒素モノマーを0.4質量部以上、2質量部未満の範囲で含有して、共重合して得られるアクリル系合成樹脂(固形分)3〜10質量%と、下記一般式(V)又は(VI)で示される有機変性ポリジメチルシロキサン(固形分)0.1〜1.5質量%とを含有することを特徴とする油性修正液組成物。
Figure 0005561917
Figure 0005561917
Figure 0005561917
Figure 0005561917
At least 30-60 mass% of white material, 20-70 mass% of organic solvent, 93-99 mass parts of (meth) acrylic acid ester represented by the following general formula (I), and the following general formula (II) An acrylic synthetic resin (solid content) of 3 to 10% by mass obtained by copolymerizing a basic nitrogen-containing monomer in a range of 0.4 parts by mass or more and less than 2 parts by mass, and the following general formula (V ) Or (VI), and an organic modified polydimethylsiloxane (solid content) of 0.1 to 1.5% by mass.
Figure 0005561917
Figure 0005561917
Figure 0005561917
Figure 0005561917
請求項1に記載の油性修正液組成物において、樹脂(固形分)の含有量が4〜8質量%、有機変性ポリジメチルシロキサン(固形分)の含有量が0.2〜1.0質量%であることを特徴とする油性修正液組成物。   The oil-based correction fluid composition according to claim 1, wherein the resin (solid content) content is 4 to 8 mass%, and the organically modified polydimethylsiloxane (solid content) content is 0.2 to 1.0 mass%. An oily correction fluid composition characterized by the above. 25℃、相対湿度65%下において、請求項1又は2記載の油性修正液組成物を塗布乾燥後の塗膜上に、水性インキで上書き筆記後の描線乾燥時間が60秒以内であることを特徴とする油性修正液組成物。   Under 25 ° C. and 65% relative humidity, the oil-based correction liquid composition according to claim 1 or 2 is applied on the coating film after drying, and the drawn line drying time after overwriting with water-based ink is within 60 seconds. An oily correction liquid composition characterized by the above.
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