JPS642906B2 - - Google Patents
Info
- Publication number
- JPS642906B2 JPS642906B2 JP17969780A JP17969780A JPS642906B2 JP S642906 B2 JPS642906 B2 JP S642906B2 JP 17969780 A JP17969780 A JP 17969780A JP 17969780 A JP17969780 A JP 17969780A JP S642906 B2 JPS642906 B2 JP S642906B2
- Authority
- JP
- Japan
- Prior art keywords
- color
- base material
- solution
- time
- indicator
- 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
Links
- 239000000463 material Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 10
- 239000000049 pigment Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- 239000002585 base Substances 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 7
- 239000000975 dye Substances 0.000 description 6
- 235000019441 ethanol Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- CPBJMKMKNCRKQB-UHFFFAOYSA-N 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one Chemical compound C1=C(O)C(C)=CC(C2(C3=CC=CC=C3C(=O)O2)C=2C=C(C)C(O)=CC=2)=C1 CPBJMKMKNCRKQB-UHFFFAOYSA-N 0.000 description 3
- OLQIKGSZDTXODA-UHFFFAOYSA-N 4-[3-(4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-3-methylphenol Chemical compound CC1=CC(O)=CC=C1C1(C=2C(=CC(O)=CC=2)C)C2=CC=CC=C2S(=O)(=O)O1 OLQIKGSZDTXODA-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- -1 o-cresolbenzene Chemical compound 0.000 description 3
- WNZQDUSMALZDQF-UHFFFAOYSA-N 2-benzofuran-1(3H)-one Chemical compound C1=CC=C2C(=O)OCC2=C1 WNZQDUSMALZDQF-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- QGKMIGUHVLGJBR-UHFFFAOYSA-M (4z)-1-(3-methylbutyl)-4-[[1-(3-methylbutyl)quinolin-1-ium-4-yl]methylidene]quinoline;iodide Chemical compound [I-].C12=CC=CC=C2N(CCC(C)C)C=CC1=CC1=CC=[N+](CCC(C)C)C2=CC=CC=C12 QGKMIGUHVLGJBR-UHFFFAOYSA-M 0.000 description 1
- WUSZPNSIGBDYCV-YSVNBZGQSA-N (4z)-5-methyl-4-[[4-[4-[(2z)-2-(2-methyl-4-oxo-5-propan-2-ylcyclohexa-2,5-dien-1-ylidene)hydrazinyl]phenyl]sulfonylphenyl]hydrazinylidene]-2-propan-2-ylcyclohexa-2,5-dien-1-one Chemical compound CC1=CC(=O)C(C(C)C)=C\C1=N\NC1=CC=C(S(=O)(=O)C=2C=CC(N\N=C\3C(=CC(=O)C(C(C)C)=C/3)C)=CC=2)C=C1 WUSZPNSIGBDYCV-YSVNBZGQSA-N 0.000 description 1
- RTZZCYNQPHTPPL-UHFFFAOYSA-N 3-nitrophenol Chemical compound OC1=CC=CC([N+]([O-])=O)=C1 RTZZCYNQPHTPPL-UHFFFAOYSA-N 0.000 description 1
- MGUKYHHAGPFJMC-UHFFFAOYSA-N 4-[3-(4-hydroxy-2,5-dimethylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-2,5-dimethylphenol Chemical compound C1=C(O)C(C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C(=CC(O)=C(C)C=2)C)=C1C MGUKYHHAGPFJMC-UHFFFAOYSA-N 0.000 description 1
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- BELBBZDIHDAJOR-UHFFFAOYSA-N Phenolsulfonephthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2S(=O)(=O)O1 BELBBZDIHDAJOR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- ABNDFSOIUFLJAH-UHFFFAOYSA-N benzyl thiocyanate Chemical compound N#CSCC1=CC=CC=C1 ABNDFSOIUFLJAH-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- OBRMNDMBJQTZHV-UHFFFAOYSA-N cresol red Chemical compound C1=C(O)C(C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C=C(C)C(O)=CC=2)=C1 OBRMNDMBJQTZHV-UHFFFAOYSA-N 0.000 description 1
- 229950002043 diathymosulfone Drugs 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- HQHBAGKIEAOSNM-UHFFFAOYSA-N naphtholphthalein Chemical compound C1=CC=C2C(C3(C4=CC=CC=C4C(=O)O3)C3=CC=C(C4=CC=CC=C43)O)=CC=C(O)C2=C1 HQHBAGKIEAOSNM-UHFFFAOYSA-N 0.000 description 1
- PGSADBUBUOPOJS-UHFFFAOYSA-N neutral red Chemical compound Cl.C1=C(C)C(N)=CC2=NC3=CC(N(C)C)=CC=C3N=C21 PGSADBUBUOPOJS-UHFFFAOYSA-N 0.000 description 1
- XJCPMUIIBDVFDM-UHFFFAOYSA-M nile blue A Chemical compound [Cl-].C1=CC=C2C3=NC4=CC=C(N(CC)CC)C=C4[O+]=C3C=C(N)C2=C1 XJCPMUIIBDVFDM-UHFFFAOYSA-M 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- KSSNXJHPEFVKHY-UHFFFAOYSA-N phenol;hydrate Chemical compound O.OC1=CC=CC=C1 KSSNXJHPEFVKHY-UHFFFAOYSA-N 0.000 description 1
- 229960003531 phenolsulfonphthalein Drugs 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Description
【発明の詳細な説明】
従来、食品や薬品等の保存又は有効期限等の期
限を表示するため、その容器にその期間や最終年
月日を文字で表示することが一般に行なわれてい
るが、遠くから見にくゝ近くで或は手に持つて確
認しなければならない不便がある。[Detailed Description of the Invention] Conventionally, in order to indicate the storage or expiration date of foods, medicines, etc., it has been common practice to display the period and final date in letters on the container. It is difficult to see from a distance, and it is inconvenient to check it up close or by holding it in your hand.
本発明は、遠くから一見してその期間を適時容
易に確認できるタイムインジケーターを提供する
もので、基材に可変色素とアルカリ性物質とを共
存せしめて成る。 The present invention provides a time indicator that allows the time period to be easily confirmed at a glance from a distance, and is made by coexisting a variable dye and an alkaline substance in the base material.
次に本発明につき詳述する。 Next, the present invention will be explained in detail.
基材としては、耐アルカリ性の無孔又は多孔性
固形物で、好ましくは、紙製又は布製の基材が一
般に使用され、その基材に可変色素とアルカリ性
物質とを均一に分散付着せしめることが好まし
く、このためには、これらの溶液を調製した後こ
れに浸漬又は噴霧、塗布等により付着、乾燥させ
て本発明タイムインジケーターを得る。可変色素
としてはｐ−ニトロフエノール、ビナクロム、γ
−スルトン、インドオキシン、アゾリトミン、ニ
ユートラルレツド、ナイルブルー、フエノールス
ルホンフタレン、ｍ−ニトロフエノール、キノリ
ンブルー、ｏ−クレゾールベンゼン、クレゾール
レツド、α−ナフトールフタレイン、ｍ−クレゾ
ールパープル、トロペオリン、ｐ−クレゾールフ
タレイン、ｐ−キシレノールブルー、チモールス
ルホンフタレン、３，３ビス（ｐ−ヒドロキシフ
エニール）フタライド、ｏ−クレゾールフタレイ
ンなどが使用でき、その単独又は２種以上の混合
により種々の色のインジケーターにつくることが
出来る。その可変色素の使用量は基材に対し、
0.001〜８％の範囲が一般で、好ましくは、0.01
〜１％が良い。アルカリ性物質としては、水酸化
ナトリウム、水酸化カリウム、水酸化バリウム、
炭酸ナトリウム、炭酸カリ、水酸化カルシウム等
が使用できる。該基材に該可変色素とアルカリ性
物質との共存せしめるには、例えば、一般に、該
可変色素を水又は有機溶剤に溶解させた液をつく
り、これをアルカリ水溶液に添加混合して、得ら
れた調製液に広幅の紙又は布から成る基材を浸漬
し、又は該液を該基材に噴霧や塗布した後乾燥
し、次で所定の大きさに切断して多数枚の本発明
タイムインジケーターを得るようにすることが好
ましい。尚、乾燥は、ヘリウム、窒素等の不活性
ガス気流中で行なうことが好ましいが、空気中で
行なうこともできる。 As the base material, an alkali-resistant non-porous or porous solid material, preferably a paper or cloth base material, is generally used, and it is possible to uniformly disperse and adhere the variable dye and the alkaline substance to the base material. Preferably, for this purpose, after preparing these solutions, the time indicator of the present invention is obtained by adhering to the solutions by dipping, spraying, coating, etc. and drying them. Variable dyes include p-nitrophenol, binachrome, and γ.
-Sutone, indoxin, azolitomine, neutral red, nile blue, phenolsulfone phthalene, m-nitrophenol, quinoline blue, o-cresolbenzene, cresol red, α-naphtholphthalein, m-cresol purple, tropeolin , p-cresol phthalein, p-xylenol blue, thymolsulfone phthalene, 3,3 bis(p-hydroxyphenyl) phthalide, o-cresol phthalein, etc. can be used, and various types can be obtained by using them alone or by mixing two or more of them. It can be made into a color indicator. The amount of variable dye used is based on the base material.
The range is generally 0.001 to 8%, preferably 0.01%.
~1% is good. Alkaline substances include sodium hydroxide, potassium hydroxide, barium hydroxide,
Sodium carbonate, potassium carbonate, calcium hydroxide, etc. can be used. In order to cause the variable dye and an alkaline substance to coexist in the base material, for example, generally, a solution is prepared by dissolving the variable dye in water or an organic solvent, and this is added to and mixed with an alkaline aqueous solution. A wide base material made of paper or cloth is dipped in the prepared liquid, or the liquid is sprayed or applied onto the base material and then dried, and then cut into a predetermined size to form a large number of time indicators of the present invention. It is preferable to obtain Note that drying is preferably carried out in a stream of an inert gas such as helium or nitrogen, but it can also be carried out in air.
このように製造したタイムインジケーターは、
空気と接触しないように、ポリエチレン、アルミ
箔等の通気性のない袋等の容器内に密封して保存
し、使用時に開封する形式として商品化すること
が好ましい。 The time indicator manufactured in this way is
It is preferable to commercialize the product in a format in which it is stored sealed in a container such as a non-ventilated bag made of polyethylene or aluminum foil so as not to come into contact with air, and is opened at the time of use.
本発明のタイムインジケーターは、例えば添図
図面に示すように、食品、医薬等の期間を測定す
るべき商品を収容した容器１の外面に貼着して使
用するを一般とし、かくして貼着後のインジケー
ター２は、外気に触れて、更に詳細には、該イン
ジケーター２の基材が担持しているアルカリ性物
質が外気中の炭酸ガスに触れて反応し、アルカリ
性物質の含有量が低下して行き、これに応じてPH
は低下して行く。このPHの低下に伴い該インジケ
ーター２の基材が担持しているPHの変化に応じて
変色する可変色素が変化する、かくして経時的に
所定期間、初めの所定の色から徐々に変化し最終
的には安定した色に落ち着くように作用する。従
て、使用者は、この色の変化を観察して適時その
保存期間を測定し得る。好ましくは、本発明イン
ジケーター２と並べて例えば初期の色と最終の色
とから成る色変化の見本片３を貼着するときは、
その観測を一層確実に且つ容易になし得る。本発
明インジケーターの所定色変化期間は、予め、ア
ルカリ性物質の含有量により自由に設定し得ら
れ、観測すべき商品に応じた各種のタイムインジ
ケーターを作成できる。 The time indicator of the present invention is generally used by being attached to the outer surface of a container 1 containing a product whose period is to be measured, such as food, medicine, etc., as shown in the accompanying drawings. 2 comes into contact with the outside air, and more specifically, the alkaline substance supported by the base material of the indicator 2 comes into contact with carbon dioxide gas in the outside air and reacts, and the content of the alkaline substance decreases. According to PH
continues to decline. As the PH decreases, the variable pigment that changes color according to the change in PH carried by the base material of the indicator 2 changes.Thus, over a predetermined period of time, the color gradually changes from the initial predetermined color to the final color. works to settle down to a stable color. Therefore, the user can observe this color change and measure the shelf life at any time. Preferably, when attaching a color change sample piece 3 consisting of, for example, an initial color and a final color, alongside the indicator 2 of the present invention,
The observation can be made more reliably and easily. The predetermined color change period of the indicator of the present invention can be freely set in advance depending on the content of the alkaline substance, and various time indicators can be created depending on the product to be observed.
次に本発明の更に具体的な実施例を例示する。 Next, more specific examples of the present invention will be illustrated.
(1) 0.1％メタクレゾールパープルのエチルアル
コール溶液50mlとジエチレングリコール２ｇ、
ポリビニルアルコール0.1ｇ、水、10％水酸化
ナトリウム水溶液とを混合し、水酸化ナトリウ
ムの濃度が0.026モル濃度になるよに調製液
A100mlを作つた。(1) 50ml of 0.1% metacresol purple ethyl alcohol solution and 2g of diethylene glycol,
Mix 0.1 g of polyvinyl alcohol, water, and 10% aqueous sodium hydroxide solution to make a solution with a sodium hydroxide concentration of 0.026 molar.
I made A100ml.
(2) 前記(1)と同様にして水酸化ナトリウムの濃度
の異なる即ち0.22モル濃度になるように調製液
B100mlを作つた。(2) In the same manner as in (1) above, prepare solutions with different concentrations of sodium hydroxide, that is, 0.22 molar concentration.
I made 100ml of B.
(3) ２％ｏ−クレゾールフタレインのエチルアル
コール溶液30mlと水と５％炭酸ナトリウム水溶
液とを混合し、炭酸ナトリウムの濃度が0.055
モル濃度になるように調製液C100mlを作つた。(3) Mix 30 ml of a 2% o-cresolphthalein ethyl alcohol solution, water, and a 5% aqueous sodium carbonate solution until the concentration of sodium carbonate is 0.055.
100 ml of preparation solution C was prepared to have a molar concentration.
(4) 0.05％フエノールレツドのエチルアルコール
溶液40mlと水と５％水酸化カリウム水溶液とを
混合して水酸化カリウムの濃度が0.055モル濃
度になるように調製液D100mlを作つた。(4) 40 ml of an ethyl alcohol solution of 0.05% phenol red, water, and a 5% aqueous potassium hydroxide solution were mixed to make 100 ml of a preparation solution D such that the concentration of potassium hydroxide was 0.055 molar.
(5) ２％３，３ビス（ｐ−ヒドロキシフエニル）
フタライドのエチルアルコール溶液40mlとグリ
セリン５ｇと水と５％炭酸ナトリウム水溶液と
を混合し炭酸ナトリウムの濃度が0.11モル濃度
になるように調製液E100mlを作つた。(5) 2% 3,3bis(p-hydroxyphenyl)
40 ml of an ethyl alcohol solution of phthalide, 5 g of glycerin, water, and a 5% aqueous sodium carbonate solution were mixed to make 100 ml of a preparation solution E such that the concentration of sodium carbonate was 0.11 molar.
(6) ２％ｏ−クレゾールフタレインのエチルアル
コール溶液25ml及び0.2％メタクレゾールパー
プルのエチルアルコール溶液25mlとをプロピレ
ングリコール２ｇと水と10％水酸化ナトリウム
水溶液を加え水酸化ナトリウムの濃度が0.055
モル濃度になるように調製液F100mlを作つた。(6) Add 25 ml of ethyl alcohol solution of 2% o-cresol phthalein and 25 ml of ethyl alcohol solution of 0.2% metacresol purple, add 2 g of propylene glycol, water and 10% aqueous sodium hydroxide solution until the concentration of sodium hydroxide is 0.055.
100 ml of preparation solution F was prepared so as to have a molar concentration.
このようにして得られた各調製液Ａ〜Ｆに夫々
紙を浸漬した後40℃の窒素気流中で乾燥して
夫々のタイムインジケーターａ、ｂ、ｃ、ｄ、
ｅ、ｆを得た。その各タイムインジケーターを空
気中に放置した所色の変化及びその変色期間は次
の通りであつた。 Paper was immersed in each of the prepared solutions A to F thus obtained, and then dried in a nitrogen stream at 40°C to form time indicators a, b, c, d,
e and f were obtained. When each time indicator was left in the air, the color change and the period of color change were as follows.
タイムイン
ジケーター 色の変化 変化期間
ａ 青色−無色 １ケ月半
ｂ 青色−無色 １年
ｃ 青紫色−無色 ３ケ月
ｄ 赤色−ベージユ ３ケ月
ｅ 赤色−無色 ６ケ月
ｆ 赤紫色−無色 ３ケ月
このように本発明によれば基材にPHの変化によ
り変色する可変色素とアルカリ性物質とを共存さ
せたタイムインジケーターは、その使用に於て一
見して色の変化からその保存期間を一見して容易
にその担持するアルカリ性物質が経時的に大気中
の炭酸ガスと反応しその含有量を減少せられ、そ
の減少に伴い、その共存する該可変色素が経時的
に変色するようにしてその時の変色度を一見し
て、保存期間の判断を容易に且つ遠くからでも観
測し得られる効果を有する。 Time indicator Color change Change period a Blue - colorless 1 and a half months b Blue - colorless 1 year c Blue-purple - colorless 3 months d Red - beige 3 months e Red - colorless 6 months f Red-purple - colorless 3 months This is how the book looks like. According to the invention, a time indicator in which a variable pigment that changes color depending on pH changes and an alkaline substance coexist in the base material can be used to easily determine the shelf life from the change in color at a glance. The alkaline substance reacts with carbon dioxide in the atmosphere to reduce its content over time, and as the content decreases, the coexisting variable pigment changes color over time, and the degree of color change at that time can be checked at a glance. This has the effect that the storage period can be easily determined and observed even from a distance.
図面は本発明実施の１例の使用態様の斜面図を
示す。
１……容器、２……タイムインジケーター。
The drawing shows a perspective view of an example of the usage of the invention. 1... Container, 2... Time indicator.
Claims (1)
とアルカリ性物質とを共存せしめて成るタイムイ
ンジケーター。1. A time indicator consisting of a base material containing a variable pigment that changes color according to changes in pH and an alkaline substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17969780A JPS57104884A (en) | 1980-12-20 | 1980-12-20 | Time indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17969780A JPS57104884A (en) | 1980-12-20 | 1980-12-20 | Time indicator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57104884A JPS57104884A (en) | 1982-06-30 |
| JPS642906B2 true JPS642906B2 (en) | 1989-01-19 |
Family
ID=16070286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17969780A Granted JPS57104884A (en) | 1980-12-20 | 1980-12-20 | Time indicator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57104884A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383117A (en) * | 2016-10-31 | 2017-02-08 | 深圳九星印刷包装集团有限公司 | Water-getting sensitization time indication device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4240888B2 (en) * | 1999-12-15 | 2009-03-18 | 凸版印刷株式会社 | Carbon dioxide detection ink composition, carbon dioxide indicator using the same, and package with carbon dioxide indicator |
| JP7271874B2 (en) * | 2017-08-30 | 2023-05-12 | 大日本印刷株式会社 | Printing ink composition, time indicator using the same, and external patch with time indicator |
| US10946682B2 (en) * | 2018-03-19 | 2021-03-16 | Xerox Corporation | Color changing expiration indicator |
| JP7320256B2 (en) * | 2018-11-05 | 2023-08-03 | 株式会社サクラクレパス | Composition for time-discoloring indicator and time-discoloring indicator using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56100384A (en) * | 1980-01-16 | 1981-08-12 | Dainippon Printing Co Ltd | Constituent having performance of display of elapsed time |
-
1980
- 1980-12-20 JP JP17969780A patent/JPS57104884A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383117A (en) * | 2016-10-31 | 2017-02-08 | 深圳九星印刷包装集团有限公司 | Water-getting sensitization time indication device |
| CN106383117B (en) * | 2016-10-31 | 2019-03-29 | 深圳九星印刷包装集团有限公司 | Obtain water sensitive time-indicating arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57104884A (en) | 1982-06-30 |
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