JPH0528273B2 - - Google Patents
Info
- Publication number
- JPH0528273B2 JPH0528273B2 JP16797485A JP16797485A JPH0528273B2 JP H0528273 B2 JPH0528273 B2 JP H0528273B2 JP 16797485 A JP16797485 A JP 16797485A JP 16797485 A JP16797485 A JP 16797485A JP H0528273 B2 JPH0528273 B2 JP H0528273B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- acid
- ink composition
- parts
- sterilization
- 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 - Lifetime
Links
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
発明の目的
本発明はエチレンオキサイド滅菌標識用インキ
組成物に関する。
医療器具等の滅菌は高圧水蒸気による滅菌ある
いは、エチレンオキサイド滅菌が行なわれてい
る。これら滅菌方法により滅菌を行なう場合、滅
菌が完全に行なわれたか否かを識別するために、
滅菌条件に達したとき変色するインキ組成物を紙
等に塗布し被滅菌体とともに滅菌処理を行いその
標識の変色によつてこれを認識している。このイ
ンキ組成物は印刷用、筆記用、スタンプ用等どの
ようなインキ組成物でも使用できる。
発明の構成
エチレンオキサイドと反応して変色する色素に
ついては既に多くの先行技術が存在する。例えば
特公昭52−10043、同57−40869、同60−15330等
に開示されているが、出願人はエチレンオキサイ
ドによつて鮮明に変色する新規色素を見出し本発
明を完成した。
この発明で使用する色素は一般式
〔Xは置換基を有しあるいは有さざるピリジン
基、キノリン基、イソキノリン基、チアゾール
基、オキサゾール基、イミダゾール基あるいはさ
らにこれらにベンゼン環もしくはナフタレン環が
縮合したものであり、R1、R2は水素原子又は低
級アルキル基である。〕
で示されるスチリル系色素である。
具体的に例示すると、上記一般式に含まれる色
素はきわめて多種多様であるので、エチレンオキ
サイドガスによる処理前後の発色、滅菌条件の強
弱に適正ある変色性色素を自由に選択することが
できる。
この発明に用いる上記色素としては次の化学式
のものが例示できる。
上記の化合物でR1、R2は水素原子、メチル基、
エチル基、プロピル基、イソプロピル基、ブチル
基であつて、Xおよびアニリノ基又はアルキルア
リニノ基にはメチル基、エチル基、メトキシ基、
エトキシ基、ハロゲン基、シアノ基、ニトロ基、
ヒドロキシル基、アミノ基、ジメチルアミノ基、
ジエチルアミノ基、ジエタノールアミノ基、カル
ボキシル基、フエニル基、フエノキシ基、ベンジ
ル基等の置換基があつてもよい。
この発明ではインキ組成物に上記色素を使用す
るだけで目的を達成することができるが、さらに
後述する有機酸を添加すると、変色が確実、迅速
となるので有機酸を使用することが望ましい。
この発明で用いる有機酸としては、フエノー
ル、安息香酸、フタル酸、サリチル酸、チオサリ
チル酸およびこれらの誘導体であるジサリチル
酸、ジチオサリチル酸、5,5′−チオジサリチル
酸、その他芳香族酸、酢酸、プロピオン酸、酪
酸、カプロン酸、コハク酸、アジピン酸等の脂肪
族酸、酒石酸、クエン酸等のオキシ酸を例示でき
るが、溶剤に可溶性の有機酸であれば何でも用い
ることができる。
上記の有機酸の他、これらの有機酸のカルシウ
ム、マグネシウム、アルミニウム、亜鉛、ジルコ
ニウム、鉄、銅および亜鉛等の塩も溶剤に可溶性
であれば遊離の有機酸と同様用いることができ
る。
この発明ではインキ組成物を塗布面に密着させ
るためにバインダー樹脂を用いることが望まし
い。特に印刷インキ用インキ組成物を調製するに
は不可欠である。バインダー樹脂としては通常印
刷用、筆記用インキ組成物に用いる樹脂は何でも
用いることができるが、アルキルフエノール系樹
脂およびマレイン酸樹脂を用いることが望まし
い。
この発明で用いる溶剤としては通常印刷用、筆
記用インキ組成物に用いる溶剤は何でも用いるこ
とができ、アルコール系、エーテル系、エステル
系、ケトン系、炭化水素系溶剤のいずれでもよ
く、使用する色素、有機酸、バインダー樹脂の溶
解性に合わせて選択すればよい。
この発明のインキ組成物を調製するにはインキ
組成物100重量部(以下重量部を単に部と記す)
につき、一般式の色素を0.05〜5.0部、好ましく
は0.1〜1部を用いる。0.05部以下では発色がう
すく、5.0部以上では変色を明確に認めがたい。
有機酸又はその塩はインキ組成物100重量部につ
き0〜10部、好ましくは0.5〜4.0部を用いる。0.2
部以下では変色が小さく、8.0部以上では溶解し
なかつたりむらになつたりする。
又この発明ではインキ組成物100部につき、バ
インダー樹脂を0〜50部、好ましくは5〜35部を
用いる。印刷用、筆記用の用途に応じインキ組成
物の粘度、塗布面への密着度に応じて種類および
使用量を適宜調節して用いればよい。バインダー
樹脂としてアクリル酸樹脂、メタアクリル酸樹脂
あるいはアクリル酸−メタアクリル酸共重合樹脂
を使用することは下記の理由により望ましい。
即ちこの発明で使用される色素と上記以外の樹
脂を組合わせてインキ組成物を調製し、印刷物と
して滅菌条件下においた場合、滅菌条件の一要素
である湿度が如何ようであつてもエチレンオキサ
イド濃度、滅菌温度が一定であれば変色および変
色時間は一定である。しかし低湿度においては滅
菌効果が悪い。故に誤つた湿度条件を低湿度に設
定した場合は滅菌が完了していないのに印刷物が
変色し滅菌完了を標識する。
上記樹脂を使用すると低湿度では変色時間が滅
菌時間に比例して長くなるので湿度如何にかかわ
らず滅菌完了を確実に認識できる。
又インキ組成物100部につき、溶剤を40〜90部、
好ましくは50〜80部を用いる。この量もインキ組
成物の用途に応じて適当粘度となるよう適宜調節
して用いればよい。
上記の成分を混合して50〜60℃で2時間攪拌し
て均一な溶液とすることによりインキ組成物を得
る。
次に実施例を第1表に示しこの発明を一層明ら
かにする。
OBJECTS OF THE INVENTION The present invention relates to ink compositions for ethylene oxide sterilization markings. Medical instruments and the like are sterilized using high-pressure steam or ethylene oxide. When performing sterilization using these sterilization methods, in order to identify whether sterilization has been completed or not,
An ink composition that changes color when sterilization conditions are reached is applied to paper or the like and sterilized together with the object to be sterilized, and this is recognized by the color change of the mark. This ink composition can be used as any ink composition for printing, writing, stamping, etc. Structure of the Invention Many prior art techniques already exist regarding dyes that change color by reacting with ethylene oxide. For example, as disclosed in Japanese Patent Publications No. 52-10043, No. 57-40869, No. 60-15330, etc., the applicant discovered a new dye that changes color vividly with ethylene oxide and completed the present invention. The dye used in this invention has the general formula [X is a pyridine group, quinoline group, isoquinoline group, thiazole group, oxazole group, imidazole group, with or without a substituent, or a benzene ring or naphthalene ring condensed thereto, and R 1 , R 2 is a hydrogen atom or a lower alkyl group. ] It is a styryl pigment shown as follows. To give a specific example, since there are a wide variety of dyes included in the above general formula, it is possible to freely select a color-changing dye that is appropriate for the color development before and after treatment with ethylene oxide gas and the intensity of sterilization conditions. Examples of the above-mentioned dyes used in this invention include those having the following chemical formula. In the above compounds, R 1 and R 2 are hydrogen atoms, methyl groups,
Ethyl group, propyl group, isopropyl group, butyl group, and X and anilino group or alkylalinino group include methyl group, ethyl group, methoxy group,
Ethoxy group, halogen group, cyano group, nitro group,
Hydroxyl group, amino group, dimethylamino group,
Substituents such as diethylamino group, diethanolamino group, carboxyl group, phenyl group, phenoxy group, and benzyl group may be present. In the present invention, the purpose can be achieved simply by using the above-mentioned pigment in the ink composition, but if an organic acid, which will be described later, is further added, the discoloration will be ensured and rapid, so it is desirable to use an organic acid. The organic acids used in this invention include phenol, benzoic acid, phthalic acid, salicylic acid, thiosalicylic acid, their derivatives disalicylic acid, dithiosalicylic acid, 5,5'-thiodisalicylic acid, other aromatic acids, acetic acid, and propionic acid. Examples include aliphatic acids such as butyric acid, caproic acid, succinic acid, and adipic acid, and oxyacids such as tartaric acid and citric acid, but any organic acid can be used as long as it is soluble in a solvent. In addition to the above-mentioned organic acids, salts of these organic acids such as calcium, magnesium, aluminum, zinc, zirconium, iron, copper, and zinc can also be used in the same manner as the free organic acids as long as they are soluble in the solvent. In this invention, it is desirable to use a binder resin in order to bring the ink composition into close contact with the coated surface. It is especially essential for preparing ink compositions for printing inks. As the binder resin, any resin commonly used in printing and writing ink compositions can be used, but it is preferable to use alkylphenol resins and maleic acid resins. The solvent used in this invention can be any solvent normally used in printing and writing ink compositions, including alcohol, ether, ester, ketone, and hydrocarbon solvents, and the pigment used. , the organic acid, and the solubility of the binder resin. To prepare the ink composition of this invention, use 100 parts by weight of the ink composition (hereinafter, parts by weight are simply referred to as parts).
0.05 to 5.0 parts, preferably 0.1 to 1 part, of the dye of the general formula is used per dye. If the amount is less than 0.05 parts, the color development will be weak, and if it is more than 5.0 parts, it will be difficult to clearly recognize the change in color.
The organic acid or its salt is used in an amount of 0 to 10 parts, preferably 0.5 to 4.0 parts, per 100 parts by weight of the ink composition. 0.2
If it is less than 8.0 parts, the discoloration will be small, and if it is more than 8.0 parts, it will not dissolve and will become uneven. Further, in the present invention, the binder resin is used in an amount of 0 to 50 parts, preferably 5 to 35 parts, per 100 parts of the ink composition. The type and amount used may be adjusted as appropriate depending on the viscosity of the ink composition and the degree of adhesion to the coated surface depending on the purpose of printing or writing. It is desirable to use an acrylic acid resin, a methacrylic acid resin, or an acrylic acid-methacrylic acid copolymer resin as the binder resin for the following reasons. That is, when an ink composition is prepared by combining the pigment used in this invention and a resin other than the above, and the printed matter is placed under sterilized conditions, no matter what the humidity, which is a factor of the sterilization conditions, the ethylene oxide If the concentration and sterilization temperature are constant, the color change and color change time will be constant. However, the sterilization effect is poor at low humidity. Therefore, if the humidity condition is incorrectly set to low humidity, the printed matter will change color and indicate that sterilization is complete even though sterilization has not yet been completed. When the above resin is used, the discoloration time becomes longer in proportion to the sterilization time at low humidity, so the completion of sterilization can be reliably recognized regardless of the humidity. Also, for every 100 parts of the ink composition, 40 to 90 parts of the solvent,
Preferably 50 to 80 parts are used. This amount may be adjusted as appropriate depending on the use of the ink composition so as to provide an appropriate viscosity. An ink composition is obtained by mixing the above components and stirring at 50 to 60°C for 2 hours to form a uniform solution. Next, Examples are shown in Table 1 to further clarify this invention.
【表】【table】
【表】【table】
Claims (1)
基、キノリン基、イソキノリン基、チアゾール
基、オキサゾール基、イミダゾール基あるいはさ
らにこれらにベンゼン環もしくはナフタレン環が
縮合したものであり、R1、R2は水素原子又は低
級アルキル基である。〕 で示されるスチリル系色素を必須成分とするエチ
レンオキサイド滅菌標識用インキ組成物。[Claims] 1. General formula [X is a pyridine group, quinoline group, isoquinoline group, thiazole group, oxazole group, imidazole group, with or without a substituent, or a benzene ring or naphthalene ring condensed thereto, and R 1 , R 2 is a hydrogen atom or a lower alkyl group. ] An ink composition for ethylene oxide sterilization labeling, which contains a styryl dye represented by the following as an essential component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60167974A JPS62161873A (en) | 1985-07-29 | 1985-07-29 | Ink composition for ethylene oxide sterilization labelling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60167974A JPS62161873A (en) | 1985-07-29 | 1985-07-29 | Ink composition for ethylene oxide sterilization labelling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62161873A JPS62161873A (en) | 1987-07-17 |
| JPH0528273B2 true JPH0528273B2 (en) | 1993-04-23 |
Family
ID=15859468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60167974A Granted JPS62161873A (en) | 1985-07-29 | 1985-07-29 | Ink composition for ethylene oxide sterilization labelling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62161873A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328039A (en) * | 1999-05-19 | 2000-11-28 | Hayashibara Biochem Lab Inc | Light absorber |
| WO2003106439A1 (en) * | 2002-06-12 | 2003-12-24 | 株式会社ビーエフ研究所 | Probe compound for image diagnosis of disease with amyloid accumulation, compound for staining age spots/diffuse age spots, and remedy for disease with amyloid accumulation |
| EP1547996A4 (en) * | 2002-08-30 | 2006-08-02 | Bf Res Inst Inc | DIAGNOSTIC PROBES AND REMEDIES FOR DISEASES HAVING PRION PROTEIN ACCUMULATION AND METHOD OF MARKING |
-
1985
- 1985-07-29 JP JP60167974A patent/JPS62161873A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62161873A (en) | 1987-07-17 |
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