JPH1017811A - Water-base silver ink - Google Patents
Water-base silver inkInfo
- Publication number
- JPH1017811A JPH1017811A JP17345196A JP17345196A JPH1017811A JP H1017811 A JPH1017811 A JP H1017811A JP 17345196 A JP17345196 A JP 17345196A JP 17345196 A JP17345196 A JP 17345196A JP H1017811 A JPH1017811 A JP H1017811A
- Authority
- JP
- Japan
- Prior art keywords
- water
- silver ink
- particle diameter
- tin powder
- polyurethane resin
- 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.)
- Pending
Links
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水性銀色インキに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-based silver ink.
【０００２】[0002]
【従来の技術】銀色の印刷インキには、銀色顔料として
アルミニウム粉が通常使用されている。有機溶剤を用い
る油性インキでは、アルミニウム粉を混合分散して銀色
インキを作成する事に問題はない。しかし、水を溶剤と
した水性インキにアルミニウム粉を混合分散すると、水
とアルミニウム粉が反応し、短時間に発泡するため使用
できなかった。2. Description of the Related Art In silver printing inks, aluminum powder is usually used as a silver pigment. With an oil-based ink using an organic solvent, there is no problem in mixing and dispersing aluminum powder to produce a silver ink. However, when aluminum powder was mixed and dispersed in an aqueous ink using water as a solvent, the water and aluminum powder reacted and foamed in a short time, so that the ink could not be used.
【０００３】[0003]
【発明が解決しようとする課題】従来の銀色インキはト
ルエンなどの有機溶剤を大量に使用するため、作業環境
改善や安全面から、水性銀色インキの開発が望まれてい
る。しかし、水とアルミニウム粉は反応して水素ガスを
発生する。特にグラビア印刷インキに使用するような細
かいアルミニウム粉については、その反応が激しく貯蔵
中に容器が発泡のため爆発する等危険性が増大する。ア
ルミニウム粉に反応防止処理する方法も検討されている
が、まだ実用化されてない。Since the conventional silver ink uses a large amount of an organic solvent such as toluene, the development of a water-based silver ink is desired from the viewpoint of improving the working environment and safety. However, water and aluminum powder react to generate hydrogen gas. In particular, fine aluminum powder used in gravure printing inks reacts violently, and the danger of explosion due to foaming of the container during storage increases. A method for preventing the reaction of aluminum powder has been studied, but has not been put to practical use yet.
【０００４】そこで、本発明は従来の銀色インキに近い
金属光沢を有し、かつ反応による発泡もなく、長期間貯
蔵しても使用できる、水性銀色インキを提供する事を技
術的な課題とするものである。本発明者らは、前記技術
的課題を達成するために、各種金属粉と各種水系樹脂を
組み合わせて、数多くの水性銀色インキを調整し、その
特性を調べるという試行錯誤的な試験研究を重ねた。そ
の結果、特定の水系エマルジョンと特定の金属粉とを組
み合わせることにより、従来の銀色インキに近い金属光
沢を有し、かつ発泡もなく長期間貯蔵しても使用でき、
取り扱いの容易な水性銀色インキを開発するに至った。Accordingly, it is a technical object of the present invention to provide a water-based silver ink which has a metallic luster close to that of a conventional silver ink, has no bubbling due to a reaction, and can be used even when stored for a long time. Things. The present inventors, in order to achieve the above technical problem, by combining various metal powders and various water-based resins, prepared a large number of aqueous silver inks, repeated trial and error test research of investigating the characteristics. . As a result, by combining a specific aqueous emulsion and a specific metal powder, it has a metallic luster close to that of a conventional silver ink, and can be used even if stored for a long time without foaming.
We have developed an easy-to-use aqueous silver ink.
【０００５】[0005]
【課題を解決するための手段】本発明に関する水性銀色
インキは、エマルジョン平均粒子径が２００ｎｍ以下
で、有機溶剤含有量が５％以下の水系ポリウレタン樹脂
に、脂肪酸で被覆した平均粒子径５〜４０ミクロンのＢ
ＥＴ法比表面積値が５０００cm2/ｇ以上の片状錫粉を混
合分散させたものである。The aqueous silver ink according to the present invention has an average particle diameter of 5 to 40 obtained by coating an aqueous polyurethane resin having an emulsion average particle diameter of 200 nm or less and an organic solvent content of 5% or less with a fatty acid. Micron B
It is obtained by mixing and dispersing flaky tin powder having an ET method specific surface area of 5000 cm 2 / g or more.
【０００６】[0006]
【発明の実施の形態】本発明の構成を詳しく説明すれば
次の通りである。本発明において使用する水系ポリウレ
タン樹脂は、水にポリウレタン樹脂が微細な粒子として
分散しているものであり、エマルジョン平均粒子径が２
００ｎｍ以下で、有機溶剤含有量が５％以下である必要
がある。上記エマルジョンは、有機溶剤の存在下又は不
存在下に、有機ポリイソシアネート化合物とカルボキシ
ル基を有するポリオール化合物とポリオール類から得ら
れるカルボキシル基含有のウレタンプレポリマーとを、
水の存在下において塩基性有機化合物及び伸長剤と反応
させることにより製造することができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in detail as follows. The water-based polyurethane resin used in the present invention is one in which the polyurethane resin is dispersed as fine particles in water, and has an emulsion average particle diameter of 2
It is necessary that the organic solvent content is not more than 00 nm and the organic solvent content is not more than 5%. The emulsion, in the presence or absence of an organic solvent, an organic polyisocyanate compound and a carboxyl group-containing urethane prepolymer obtained from a polyol compound having a carboxyl group and a polyol,
It can be produced by reacting with a basic organic compound and an extender in the presence of water.
【０００７】エマルジョン平均粒子径は２００ｎｍ以
下、好ましくは１００ｎｍ以下である。平均粒子径が２
００ｎｍより大きくなると造膜に時間がかかり通常のス
ピードで印刷できず、又印刷物の密着性も悪くなる。細
かい程良いが製造技術上の制約から下限は２０ｎｍ程度
である。水系ポリウレタン樹脂の有機溶剤含有量は５％
以下、好ましくは１％以下である。有機溶剤含有量が５
％以上であると水性銀色インキの貯蔵安定性が悪くな
り、色が変化する。The average particle size of the emulsion is 200 nm or less, preferably 100 nm or less. Average particle size is 2
If it is larger than 00 nm, it takes a long time to form a film, printing cannot be performed at a normal speed, and the adhesion of the printed matter is deteriorated. The finer, the better, but the lower limit is about 20 nm due to limitations in manufacturing technology. Organic solvent content of aqueous polyurethane resin is 5%
Or less, preferably 1% or less. Organic solvent content is 5
% Or more, the storage stability of the aqueous silver ink deteriorates, and the color changes.
【０００８】本発明において銀色顔料として使用する錫
粉は脂肪酸で被覆した片状錫粉である。脂肪酸で被覆し
ていない錫粉は片状粉でも優れた金属光沢が得られな
い。脂肪酸を錫粉に被覆する方法は、パルミチン酸やス
テアリン酸等の脂肪酸を錫粉に少量添加して、媒体と錫
粉をボールミルなどに入れて機械的に錫粉の表面に脂肪
酸を被覆すればよい。脂肪酸量は比表面積値により変わ
るが、０．１％以上から効果が有る。本発明の脂肪酸で
被覆した片状錫粉とは、錫粉の表面に脂肪酸の薄膜が形
成されたものであれば良く、この簡単な評価方法は水面
上に錫粉が均一に浮かび上がるかどうかで判定出来る。The tin powder used as the silver pigment in the present invention is a flaky tin powder coated with a fatty acid. Tin powder not coated with a fatty acid cannot provide excellent metallic luster even with flaky powder. The method of coating the fatty acid on the tin powder is to add a small amount of a fatty acid such as palmitic acid or stearic acid to the tin powder, put the medium and the tin powder in a ball mill, etc., and mechanically coat the surface of the tin powder with the fatty acid. Good. The amount of fatty acid varies depending on the specific surface area, but the effect is effective from 0.1% or more. The flaky tin powder coated with the fatty acid of the present invention may be any one in which a thin film of a fatty acid is formed on the surface of the tin powder, and this simple evaluation method determines whether the tin powder uniformly floats on the water surface. Can be determined by
【０００９】片状錫粉の平均粒子径は５〜４０ミクロン
が良い。平均粒子径が５ミクロンより細かいと印刷塗膜
面に錫粉が均一に浮かび上がらず金属光沢の良いものが
得られない。一方、４０ミクロンより大きくなるとイン
キ溶液中で沈殿したり、印刷物に転移せず、逆に光沢が
悪くなる。錫粉のＢＥＴ法比表面積値が５０００cm2/ｇ
以上であることが必要である。ＢＥＴ法比表面積値が５
０００cm2/ｇ以下であると塗膜表面に錫粉が浮かび上が
らず光沢の悪いものとなる。好ましくは、ＢＥＴ法比表
面積値が１００００cm2/ｇ以上である。The average particle size of the flaky tin powder is preferably 5 to 40 microns. If the average particle size is smaller than 5 microns, the tin powder does not uniformly float on the surface of the printed coating film, and a fine metallic luster cannot be obtained. On the other hand, if it is larger than 40 microns, it does not precipitate in the ink solution or transfer to the printed matter, and conversely, the gloss deteriorates. Tin powder has a BET specific surface area of 5000 cm 2 / g
It is necessary to be above. BET specific surface area value of 5
If it is less than 000 cm 2 / g, tin powder does not appear on the surface of the coating film, resulting in poor gloss. Preferably, the BET specific surface area is 10,000 cm 2 / g or more.
【００１０】このような粉末特性を満足する錫粉は、機
械的に片状加工した片状錫粉の中から選定して使用すれ
ば良い。水系ポリウレタン樹脂に対する錫粉の混入量は
印刷方法や使用目的によって異なるが固形分３０％の水
系ポリウレタン樹脂１００重量部に対して３０部〜１０
０部混合分散するのが良い。水系ポリウレタン樹脂に錫
粉を混合分散する方法は、ミキサー、デイスパーサー、
ロールミルなどインキと顔料を混合する通常の分散機が
利用出来る。なを、脂肪酸で被覆した錫粉はあらかじめ
水と相溶性の良いアルコール類、グリコール類、界面活
性剤等に湿潤して水系ポリウレタン樹脂に混合分散する
と、短時間に銀色インキを製造することが出来る。水系
ポリウレタン樹脂以外のアクリル、酢酸ビニル、スチレ
ンブタジエン共重合、塩化ビニル、エチレン酢酸ビニル
共重合等のエマルジョンを使用しても優れた金属光沢が
得られない。Tin powder that satisfies such powder properties may be selected from mechanically flaky tin powder and used. The mixing amount of the tin powder in the aqueous polyurethane resin varies depending on the printing method and the purpose of use, but 30 parts to 10 parts by weight per 100 parts by weight of the aqueous polyurethane resin having a solid content of 30%.
It is preferable to mix and disperse 0 parts. A method of mixing and dispersing tin powder in an aqueous polyurethane resin includes a mixer, a disperser,
An ordinary dispersing machine such as a roll mill for mixing the ink and the pigment can be used. However, when tin powder coated with a fatty acid is wetted in advance with water-compatible alcohols, glycols, surfactants and the like and mixed and dispersed in an aqueous polyurethane resin, a silver ink can be produced in a short time. . Even if an emulsion other than an aqueous polyurethane resin such as acrylic, vinyl acetate, styrene butadiene copolymer, vinyl chloride, and ethylene vinyl acetate copolymer is used, excellent metallic luster cannot be obtained.
【００１１】ところで、本発明に係わる水性銀色インキ
には、顔料分散剤、増粘剤、可塑剤、成膜助剤、消泡剤
及び酸化防止剤等の通常一般的な水性インキに使用され
る各種添加剤を配合させることが出来る。本発明におい
ては、水性エマルジョンとして、水系ポリウレタン樹脂
を採用することで油性インキに近い金属光沢を有する印
刷物を得ることができる。さらに、エマルジョンの平均
粒子径を２００ｎｍ以下とし、有機溶剤含有量を５％以
下の水系ポリウレタン樹脂を選定する事により、通常の
印刷スピードで印刷が出来、かつ錫粉の変色が少ないこ
とで印刷残のインキを再利用する事も出来る。錫粉を使
用することにより、水と反応して水素ガスを発生する事
もなくなり、長期間密閉貯蔵する事が可能となった。By the way, the aqueous silver ink according to the present invention is used in a general aqueous ink such as a pigment dispersant, a thickener, a plasticizer, a film forming aid, an antifoaming agent and an antioxidant. Various additives can be blended. In the present invention, a printed matter having a metallic luster close to that of an oil-based ink can be obtained by employing an aqueous polyurethane resin as the aqueous emulsion. Further, by selecting an aqueous polyurethane resin having an average particle diameter of 200 nm or less and an organic solvent content of 5% or less, printing can be performed at a normal printing speed, and the discoloration of tin powder is small, so that the printing residue can be reduced. Can be reused. By using the tin powder, hydrogen gas was not generated by reacting with water, and it was possible to store in a closed state for a long period of time.
【００１２】[0012]
【実施例】以下、実施例により本発明を具体的に説明す
るが、これにより本発明の範囲が限定されるものではな
い。EXAMPLES The present invention will be described below in detail with reference to examples, but the scope of the present invention is not limited by these examples.
【００１３】[0013]
【実施例１】脂肪酸（０．５％のステアリン酸）で被覆
した、平均粒子径が１０ミクロン、ＢＥＴ法比表面積値
が２００００cm2/ｇの片状錫粉５０重量部にイソプロピ
ルアルコール１０重量部加えミキサーでペースト状にし
た。それにエマルジョン平均粒子径５０ｎｍ、有機溶剤
含有量１％の水系ポリウレタン樹脂（固形分３０％）１
００重量部を加えミキサーで１０分間混合分散して水性
銀色インキを製造した。このようにして製造した水性銀
色インキの性能を評価するためグラビア印刷を行った結
果、金属光沢良好な印刷物を印刷することが出来た。又
印刷インキを６ヶ月貯蔵した後でも変色や発泡の問題も
なく再使用できた。Example 1 50 parts by weight of flaky tin powder coated with a fatty acid (0.5% stearic acid) having an average particle diameter of 10 microns and a BET specific surface area of 20,000 cm 2 / g, and 10 parts by weight of isopropyl alcohol The mixture was made into a paste with a mixer. A water-based polyurethane resin (solid content: 30%) having an emulsion average particle diameter of 50 nm and an organic solvent content of 1%.
Then, 00 parts by weight were added and mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus manufactured. As a result, a printed matter having good metallic luster was able to be printed. Even after the printing ink was stored for 6 months, it could be reused without problems of discoloration and foaming.
【００１４】[0014]
【実施例２】脂肪酸（０．１％のステアリン酸）で被覆
した、平均粒子径が４０ミクロン、ＢＥＴ法比表面積値
が５０００cm2/ｇの片状錫粉１００重量部にイソプロピ
ルアルコール１０重量部加えミキサーでペースト状にし
た。それにエマルジョン平均粒子径５０ｎｍ、有機溶剤
含有量１％の水系ポリウレタン樹脂（固形分３０％）１
００重量部を加えミキサーで１０分間混合分散して水性
銀色インキを製造した。このようにして製造した水性銀
色インキの性能を評価するためグラビア印刷を行った結
果、印刷中に攪拌を必要としたが金属光沢良好な印刷物
を印刷することが出来た。又印刷インキを６ヶ月貯蔵し
た後でも変色や発泡の問題もなく再使用できた。Example 2 100 parts by weight of flaky tin powder coated with a fatty acid (0.1% stearic acid) having an average particle diameter of 40 microns and a BET specific surface area of 5000 cm 2 / g, and 10 parts by weight of isopropyl alcohol The mixture was made into a paste with a mixer. A water-based polyurethane resin (solid content: 30%) having an emulsion average particle diameter of 50 nm and an organic solvent content of 1%.
Then, 00 parts by weight were added and mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus produced. As a result, although agitation was required during printing, a printed material having good metallic luster could be printed. Even after the printing ink was stored for 6 months, it could be reused without problems of discoloration and foaming.
【００１５】[0015]
【実施例３】脂肪酸（１．０％のステアリン酸）で被覆
した、平均粒子径が５ミクロン、ＢＥＴ法比表面積値が
２５０００cm2/ｇの片状錫粉３０重量部にイソプロピル
アルコール１０重量部加えミキサーでペースト状にし
た。それにエマルジョン平均粒子径５０ｎｍ、有機溶剤
含有量１％の水系ポリウレタン樹脂（固形分３０％）１
００重量部を加えミキサーで１０分間混合分散して水性
銀色インキを製造した。このようにして製造した水性銀
色インキの性能を評価するためグラビア印刷を行った結
果、金属光沢良好な印刷物を印刷することが出来た。又
印刷インキを６ヶ月貯蔵した後でも変色や発泡の問題も
なく再使用できた。Example 3 30 parts by weight of flaky tin powder coated with a fatty acid (1.0% stearic acid) having an average particle diameter of 5 microns and a BET specific surface area of 25000 cm 2 / g, and 10 parts by weight of isopropyl alcohol The mixture was made into a paste with a mixer. A water-based polyurethane resin (solid content: 30%) having an emulsion average particle diameter of 50 nm and an organic solvent content of 1%.
Then, 00 parts by weight were added and mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus manufactured. As a result, a printed matter having good metallic luster was able to be printed. Even after the printing ink was stored for 6 months, it could be reused without problems of discoloration and foaming.
【００１６】[0016]
【実施例４】脂肪酸（０．５％のステアリン酸）で被覆
した、平均粒子径が１０ミクロン、ＢＥＴ法比表面積値
が２００００cm2/ｇの片状錫粉５０重量部にイソプロピ
ルアルコール１０重量部加えミキサーでペースト状にし
た。それにエマルジョン平均粒子径２００ｎｍ、有機溶
剤含有量０．１％の水系ポリウレタン樹脂（固形分３０
％）１００重量部を加えミキサーで１０分間混合分散し
て水性銀色インキを製造した。このようにして製造した
水性銀色インキの性能を評価するためグラビア印刷を行
った結果、乾燥温度をやや高く設定することにより、金
属光沢良好な印刷物を印刷することが出来た。又印刷イ
ンキを６ヶ月貯蔵した後でも変色や発泡の問題もなく再
使用できた。Example 4 50 parts by weight of flaky tin powder coated with a fatty acid (0.5% stearic acid) having an average particle diameter of 10 microns and a BET specific surface area of 20,000 cm 2 / g, and 10 parts by weight of isopropyl alcohol The mixture was made into a paste with a mixer. In addition, an aqueous polyurethane resin having an emulsion average particle diameter of 200 nm and an organic solvent content of 0.1% (solid content: 30%)
%) And mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus produced. As a result, by setting the drying temperature to be slightly higher, a printed matter having good metallic luster could be printed. Even after the printing ink was stored for 6 months, it could be reused without problems of discoloration and foaming.
【００１７】[0017]
【実施例５】脂肪酸（０．５％のステアリン酸）で被覆
した、平均粒子径が１０ミクロン、ＢＥＴ法比表面積値
が２００００cm2/ｇの片状錫粉５０重量部にイソプロピ
ルアルコール１０重量部加えミキサーでペースト状にし
た。それにエマルジョン平均粒子径１００ｎｍ、有機溶
剤含有量０．２％の水系ポリウレタン樹脂（固形分３０
％）１００重量部を加えミキサーで１０分間混合分散し
て水性銀色インキを製造した。このようにして製造した
水性銀色インキの性能を評価するためグラビア印刷を行
った結果、金属光沢良好な印刷物を印刷することが出来
た。又印刷インキを６ヶ月貯蔵した後でも変色や発泡の
問題もなく再使用できた。Example 5 50 parts by weight of flaky tin powder coated with a fatty acid (0.5% stearic acid) having an average particle diameter of 10 microns and a BET specific surface area of 20,000 cm 2 / g, and 10 parts by weight of isopropyl alcohol The mixture was made into a paste with a mixer. In addition, an aqueous polyurethane resin having an emulsion average particle diameter of 100 nm and an organic solvent content of 0.2% (solid content: 30%)
%) And mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus manufactured. As a result, a printed matter having good metallic luster was able to be printed. Even after the printing ink was stored for 6 months, it could be reused without problems of discoloration and foaming.
【００１８】[0018]
【実施例６】脂肪酸（０．５％のステアリン酸）で被覆
した、平均粒子径が１０ミクロン、ＢＥＴ法比表面積値
が２００００cm2/ｇの片状錫粉５０重量部にイソプロピ
ルアルコール１０重量部加えミキサーでペースト状にし
た。それにエマルジョン平均粒子径５０ｎｍ、有機溶剤
含有量５％の水系ポリウレタン樹脂（固形分３０％）１
００重量部を加えミキサーで１０分間混合分散して水性
銀色インキを製造した。このようにして製造した水性銀
色インキの性能を評価するためグラビア印刷を行った結
果、金属光沢良好な印刷物を印刷することが出来た。又
印刷インキを５ヶ月貯蔵した後でも変色や発泡の問題も
なく再使用できた。Example 6 50 parts by weight of flaky tin powder coated with a fatty acid (0.5% stearic acid) having an average particle diameter of 10 microns and a BET specific surface area of 20,000 cm 2 / g, and 10 parts by weight of isopropyl alcohol The mixture was made into a paste with a mixer. And an aqueous polyurethane resin (solid content: 30%) having an emulsion average particle diameter of 50 nm and an organic solvent content of 5%.
Then, 00 parts by weight were added and mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus manufactured. As a result, a printed matter having good metallic luster was able to be printed. Even after the printing ink was stored for 5 months, it could be reused without problems of discoloration and foaming.
【００１９】[0019]
【実施例７】脂肪酸（０．５％のパルミチン酸）で被覆
した、平均粒子径が１０ミクロン、ＢＥＴ法比表面積値
が１５０００cm2/ｇの片状錫粉５０重量部に非イオン界
面活性剤２重量部加えミキサーでペースト状にした。そ
れにエマルジョン平均粒子径５０ｎｍ、有機溶剤含有量
０．２％の水系ポリウレタン樹脂（固形分３０％）１０
０重量部を加えミキサーで１０分間混合分散して水性銀
色インキを製造した。このようにして製造した水性銀色
インキの性能を評価するためグラビア印刷を行った結
果、金属光沢良好な印刷物を印刷することが出来た。又
印刷インキを６ヶ月貯蔵した後でも変色や発泡の問題も
なく再使用できた。Example 7 A nonionic surfactant was added to 50 parts by weight of flaky tin powder coated with a fatty acid (0.5% palmitic acid) having an average particle diameter of 10 microns and a BET specific surface area of 15000 cm 2 / g. 2 parts by weight were added to form a paste with a mixer. And an aqueous polyurethane resin (solid content: 30%) having an emulsion average particle diameter of 50 nm and an organic solvent content of 0.2%.
0 parts by weight were added and mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus manufactured. As a result, a printed matter having good metallic luster was able to be printed. Even after the printing ink was stored for 6 months, it could be reused without problems of discoloration and foaming.
【００２０】[0020]
【実施例８】脂肪酸（０．５％のステアリン酸）で被覆
した、平均粒子径が４０ミクロン、ＢＥＴ法比表面積値
が１００００cm2/ｇの片状錫粉７０重量部にイソプロピ
ルアルコール１０重量部加えミキサーでペースト状にし
た。それにエマルジョン平均粒子径５０ｎｍ、有機溶剤
含有量０．２％の水系ポリウレタン樹脂（固形分３０
％）１００重量部を加えミキサーで１０分間混合分散し
て水性銀色インキを製造した。このようにして製造した
水性銀色インキの性能を評価するためグラビア印刷を行
った結果、金属光沢良好な印刷物を印刷することが出来
た。又印刷インキを６ヶ月貯蔵した後でも変色や発泡の
問題もなく再使用できた。Example 8 70 parts by weight of flaky tin powder coated with a fatty acid (0.5% stearic acid) having an average particle diameter of 40 microns and a BET specific surface area of 10,000 cm 2 / g, and 10 parts by weight of isopropyl alcohol The mixture was made into a paste with a mixer. In addition, an aqueous polyurethane resin having an emulsion average particle diameter of 50 nm and an organic solvent content of 0.2% (solid content: 30%)
%) And mixed and dispersed with a mixer for 10 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus manufactured. As a result, a printed matter having good metallic luster was able to be printed. Even after the printing ink was stored for 6 months, it could be reused without problems of discoloration and foaming.
【００２１】[0021]
【実施例９】脂肪酸（０．５％のステアリン酸）で被覆
した、平均粒子径が４０ミクロン、ＢＥＴ法比表面積値
が１００００cm2/ｇの片状錫粉７０重量部に、エマルジ
ョン平均粒子径５０ｎｍ、有機溶剤含有量０．２％の水
系ポリウレタン樹脂（固形分３０％）１００重量部を加
えミキサーで１５分間混合分散して水性銀色インキを製
造した。このようにして製造した水性銀色インキの性能
を評価するためグラビア印刷を行った結果、金属光沢良
好な印刷物を印刷することが出来た。又印刷インキを６
ヶ月貯蔵した後でも変色や発泡の問題もなく再使用でき
た。EXAMPLE 9 70 parts by weight of flaky tin powder coated with a fatty acid (0.5% stearic acid) having an average particle size of 40 microns and a BET specific surface area of 10,000 cm 2 / g was mixed with an emulsion average particle size. 100 parts by weight of an aqueous polyurethane resin (solid content: 30%) having a thickness of 50 nm and an organic solvent content of 0.2% was added and mixed and dispersed with a mixer for 15 minutes to produce an aqueous silver ink. Gravure printing was performed to evaluate the performance of the water-based silver ink thus manufactured. As a result, a printed matter having good metallic luster was able to be printed. Also use 6 printing inks.
Even after storage for months, it could be reused without problems of discoloration and foaming.
【００２２】[0022]
【発明の効果】本発明においては、特定の水系ポリウレ
タン樹脂に、特定の錫粉を混合分散する事によって、そ
れらの相乗効果で、従来の油性銀色インキに近い金属光
沢が得られ、かつ発泡しない安定な水性インキを得るこ
とができる。本発明に係わる水性銀色インキは、グラビ
ア印刷、フレキソ印刷、スクリーン印刷、刷毛塗りなど
従来の分野に使用できる。又水性であるためトルエンな
どの有機溶剤の代わりに水で希釈でき、環境汚染や中
毒、火災の危険もなく、さらに錫は比較的安全な金属で
あることから食品包装材としても使用可能であり、本発
明の産業上への利用性は非常に大きいといえる。According to the present invention, by mixing and dispersing a specific tin powder in a specific aqueous polyurethane resin, a metallic luster close to that of the conventional oil-based silver ink can be obtained and a foaming does not occur due to a synergistic effect of these. A stable aqueous ink can be obtained. The water-based silver ink according to the present invention can be used in conventional fields such as gravure printing, flexographic printing, screen printing, and brush coating. Also, since it is water-based, it can be diluted with water instead of an organic solvent such as toluene, and there is no risk of environmental pollution, poisoning or fire.In addition, since tin is a relatively safe metal, it can be used as a food packaging material. It can be said that the industrial applicability of the present invention is very large.
Claims (2)
下で、有機溶剤含有量が５％以下の水系ポリウレタン樹
脂に、脂肪酸で被覆した片状錫粉を混合分散させてなる
水性銀色インキ。1. An aqueous silver ink obtained by mixing and dispersing flaky tin powder coated with a fatty acid in an aqueous polyurethane resin having an emulsion average particle diameter of 200 nm or less and an organic solvent content of 5% or less.
ンで、ＢＥＴ法比表面積値が５０００cm2/ｇ以上である
ことを特徴とする特許請求項１記載の水性銀色インキ。2. The aqueous silver ink according to claim 1, wherein the flaky tin powder has an average particle diameter of 5 to 40 microns and a BET specific surface area of 5000 cm 2 / g or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17345196A JPH1017811A (en) | 1996-07-03 | 1996-07-03 | Water-base silver ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17345196A JPH1017811A (en) | 1996-07-03 | 1996-07-03 | Water-base silver ink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1017811A true JPH1017811A (en) | 1998-01-20 |
Family
ID=15960718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17345196A Pending JPH1017811A (en) | 1996-07-03 | 1996-07-03 | Water-base silver ink |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1017811A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002004234A1 (en) * | 2000-07-10 | 2002-01-17 | De La Rue International Limited | Method of providing an image on a substrate, and an ink for use therein |
| WO2022234732A1 (en) * | 2021-05-07 | 2022-11-10 | サカタインクス株式会社 | Electroconductive resin composition |
-
1996
- 1996-07-03 JP JP17345196A patent/JPH1017811A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002004234A1 (en) * | 2000-07-10 | 2002-01-17 | De La Rue International Limited | Method of providing an image on a substrate, and an ink for use therein |
| AU2001269313C1 (en) * | 2000-07-10 | 2002-01-21 | De La Rue International Limited | Method of providing an image on a substrate, and an ink for use therein |
| AU2001269313B2 (en) * | 2000-07-10 | 2005-02-24 | De La Rue International Limited | Method of providing an image on a substrate, and an ink for use therein |
| WO2022234732A1 (en) * | 2021-05-07 | 2022-11-10 | サカタインクス株式会社 | Electroconductive resin composition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5843329A (en) | Magnetic paint or ink additive | |
| US4585815A (en) | Stencil printing ink | |
| US5609788A (en) | Magnetic paint additive | |
| EP0784326B1 (en) | Flexible thick film conductor composition | |
| US3527729A (en) | Glare-free coating compositions of elastomeric particles in an elastomeric film-former | |
| JP5705481B2 (en) | Aqueous drawing material composition | |
| US2904523A (en) | Storage-stable pastes, paints, inks and similar products containing aluminous pigments | |
| US3025252A (en) | Incorporation of metallic pigment in coating compositions | |
| JPH1017811A (en) | Water-base silver ink | |
| JP2007204638A (en) | Gold powder for water-based printing ink | |
| JPH09272817A (en) | Golden colored powder for aqueous ink | |
| JPH032279A (en) | Pigment composition | |
| JPH10330650A (en) | Antistatic coating material and destaticization using the same | |
| JPH06299114A (en) | Metalescent color ink composition for writing tool | |
| JP3633696B2 (en) | Water-based gold ink | |
| US3563779A (en) | Aqueous metallic flake compositions | |
| US2713006A (en) | Paste pigments | |
| CN109735218A (en) | A kind of antistatic aqueous finishing varnish | |
| KR100758294B1 (en) | A low-bake base and top coating paint composition and method therefor | |
| US5746948A (en) | Water-dilutive and conductive coating composition capable of affording desired color tone | |
| JP4117982B2 (en) | Metallic glossy water-based stamp ink composition | |
| JPS6115904B2 (en) | ||
| WO2021149781A1 (en) | Aniline black particle powder, and resin composition and aqueous dispersion, each using said aniline black particle powder | |
| JPH06220395A (en) | Composition for aqueous coating | |
| JPH04342775A (en) | Ethanol-based metallic color ink composition |