JPS6144249B2 - - Google Patents
Info
- Publication number
- JPS6144249B2 JPS6144249B2 JP5841379A JP5841379A JPS6144249B2 JP S6144249 B2 JPS6144249 B2 JP S6144249B2 JP 5841379 A JP5841379 A JP 5841379A JP 5841379 A JP5841379 A JP 5841379A JP S6144249 B2 JPS6144249 B2 JP S6144249B2
- Authority
- JP
- Japan
- Prior art keywords
- illuminance
- spiropyran
- film
- present
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000000020 Nitrocellulose Substances 0.000 claims description 5
- 229920001220 nitrocellulos Polymers 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 241000894007 species Species 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000002845 discoloration Methods 0.000 description 6
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920002160 Celluloid Polymers 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 206010034960 Photophobia Diseases 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 229960002380 dibutyl phthalate Drugs 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 208000013469 light sensitivity Diseases 0.000 description 2
- 230000004379 myopia Effects 0.000 description 2
- 208000001491 myopia Diseases 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 240000000972 Agathis dammara Species 0.000 description 1
- 229920002871 Dammar gum Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 235000010985 glycerol esters of wood rosin Nutrition 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
- G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
人のとくに学生の近視の増加がめだつている。
その原因としては、テレビの普及、夜間の勉強時
間の増加などによる目の酷使が伝えられており、
また照度不足による視力低下の促進も問題となつ
ている。照度不足は本人の無意識の内に近視を進
行させる恐れがあり、これを予防するため各人が
定期的に照度を測定、管理する必要性が指適され
る。今日市販されている照度計は光電式のものが
主流である。この種の照度計は正確ではあるが高
価でかさばり、定期的な調整を要するなど、取扱
いのめんどうさもあり、家庭を対象にする程普及
していないのが現状である。安価かつ取扱いやす
い照度計の出現が望まれるところである。
本発明者は、この問題につき鋭意検討した結
果、フオトクロミツク材料であるインドリノスピ
ロピラン化合物の１種または２種以上をニトロセ
ルロース系樹脂に保持せしめることにより、容易
に照度指示用素材を形成しうることを見い出し本
発明を完成した。
本発明に使用されるインドリノスピロピラン化
合物としては、
一般式〔〕
で示されるものがある。上式においてR1は水素
原子またはハロゲン原子を示し、R2はアルキル
基を示し、R3は水素原子またはアルコキシ基を
示す。
一般にスピロピランはフオトクロミツク材料と
してよく知られている。
例えば１、３、３―トリメチルインドリノー
6′―ニトロベンゾピリルスピラン〔〕は非極性
媒体中無色であるが紫外線照射によりスピロピラ
ン環のＣ―Ｏ結合が開裂し分子内で対イオンとな
りメロシアニン型の分子構造〔〕となり着色す
る。
また〔〕は可視光線照射あるいは加熱により
もとの〔〕にもどる。一般にスピロピランの発
色種〔〕の分子は周囲の温度の影響のため無色
種〔〕にもどる性質を有し、その消色速度は化
合物の種類によつて異なり、瞬時のものから数ケ
月以上かかるものがあり終局的にはある時間経過
後無色状態にもどることが知られている。
本発明者はスピロピランの発色種〔〕が可視
光線照射により消色種〔〕になることに着目
し、本発明の目的に用いるべくスピロピランの発
色種の安定化につき種々検討した結果、スピロピ
ランをニトロセルロース系樹脂溶液中に溶解さ
せ、皮膜とすることにより容易に達成されること
を見出した。
即ち、ニトロセルロース系樹脂の皮膜中にスピ
ロピランを溶解（固溶体を含む）させると、スピ
ロピランはやがて発色種となり安定化される。こ
の発色種を可視光線に暴露させると光線照射量に
従つて変色し、やがて無色〜黄色に淡色化され
る。さらに変色した皮膜を暗所に放置すると数時
間〜数10時間で再び着色し、使用前の状態にもど
り、また加熱すれば着色速度はさらに促進される
のが認められた。この現象を利用して本発明を完
成した。
本発明に用いられるニトロセルロース系樹脂
は、窒素量10.0〜12.0％のもので、通常フイル
ム、セルロイド、ラツカーなどに用いられる種々
の重合度のものを使用することができる。また光
沢、密着性、耐候性向上のため、脱ロウダンマル
樹脂、ロジン、エステルガム、マレイン酸樹脂、
塩化ビニル樹脂、メタクリル酸樹脂などを配合す
ることができる。
さらに可塑剤として、リン酸トリクレシル、フ
タル酸ブチル、シヨウなどの公知のものを用いる
ことができ、溶剤としてはエステル系溶剤（酢酸
ブチル、酢酸メチルなど）、ケトン系溶剤（アセ
トン、イソブチルメチルケトン、シクロヘキサノ
ンなど）およびエーテル系溶剤（セルソルブ、ブ
チルセルソルブなど）を使用することができる。
また皮膜に均一性を与えるため助溶剤（メタノー
ル、エタノールなど）、希釈剤（ベンゼン、トル
エン、キシレンなど）を適当に選ぶことができ
る。
スピロピランの添加量としては樹脂に対して
0.01〜20重量％程度が望ましく、色調及び光線感
受性については、スピロピランの種類及び濃度に
より選ぶことができる。
本発明に系る照度指示用素材は上記のごとき材
料からなることを基本的構成とするものであり、
フイルム、セルロイドに成型しあるいは紙、ガラ
スなど適当な支持体に塗布し皮膜として目的を達
成することができる。またスピロピランの光線感
受性を安定に保持するために素材表面を透明なポ
リマー材でコーテングしたり、紫外線の影響をふ
せぐために紫外線吸収剤を使用することもでき
る。
本発明になる素材を用いて照度を測定する簡便
な方法としては次の２方法がある。第１の方法は
皮膜に一定時間例えば室内光にあつては10〜30分
程度、可視光線に暴露し、変色の程度を予め用意
した標準発色表と対比して照度を測定する方法で
ある。さらに皮膜をテープ状に室内に延ばせば同
様にして部屋の照度バランスを見ることができ
る。第２の方法は例えば５分ごとに勾配をもたせ
た露光を行ない、可視光線によつて変色が飽和さ
れた部分の面積の大きさにより照度を決定する方
法である。
次に具体的実施例を以下に示す。当然のことな
がら以下は本発明の実施態様のうち好ましいもの
の若干を例示したにすぎない。従つて本発明はこ
れら実施例によつてなんらの限定をうけるもので
はない。
実施例 １
酢酸エチル７c.c.、酢酸ブチル23c.c.およびトルエ
ン30c.c.の混合溶剤に５ｇのフタル酸ジブチル、15
ｇのニトロセルロース、12ｇのアルキツト樹脂お
There is a noticeable increase in myopia among people, especially students.
The cause is said to be overuse of the eyes due to the spread of television and increased study time at night.
Further, the acceleration of visual acuity deterioration due to insufficient illuminance is also a problem. Insufficient illuminance can unconsciously advance myopia, and to prevent this, it is important that each person regularly measures and manages illuminance. The majority of illumination meters on the market today are photoelectric type. Although this type of illumination meter is accurate, it is expensive, bulky, requires periodic adjustment, and is cumbersome to handle, so it is currently not widely used in households. It is hoped that an inexpensive and easy-to-handle illumination meter will emerge. As a result of intensive study on this problem, the inventor of the present invention has found that it is possible to easily form a material for illuminance indication by retaining one or more types of indolinospiropyran compounds, which are photochromic materials, in a nitrocellulose resin. They discovered this and completed the present invention. The indolinospiropyran compound used in the present invention has the general formula [] There is something indicated by . In the above formula, R 1 represents a hydrogen atom or a halogen atom, R 2 represents an alkyl group, and R 3 represents a hydrogen atom or an alkoxy group. Spiropyran is generally well known as a photochromic material. For example, 1,3,3-trimethylindolino
6'-Nitrobenzopyrylspirane [ ] is colorless in a nonpolar medium, but upon irradiation with ultraviolet rays, the C—O bond in the spiropyran ring cleaves and forms a counterion within the molecule, forming a merocyanine-type molecular structure [ ] and becoming colored. Also, [] returns to its original state [] by irradiation with visible light or heating. In general, the molecules of the colored species of spiropyran [ ] have the property of returning to the colorless species [ ] due to the influence of the surrounding temperature, and the speed of decolorization varies depending on the type of compound, ranging from instantaneous to several months or more. It is known that it eventually returns to a colorless state after a certain period of time. The present inventor focused on the fact that the colored species of spiropyran becomes a decolorized species when irradiated with visible light, and as a result of various studies on stabilizing the colored species of spiropyran for use in the purpose of the present invention, the inventors found that spiropyran can be It has been found that this can be easily achieved by dissolving it in a cellulose resin solution and forming a film. That is, when spiropyran is dissolved (including a solid solution) in a film of nitrocellulose resin, spiropyran eventually becomes a coloring species and is stabilized. When this colored species is exposed to visible light, the color changes depending on the amount of light irradiation, and the color gradually fades from colorless to yellow. Furthermore, if the discolored film was left in a dark place, it would become colored again in several hours to several tens of hours, returning to its state before use, and it was observed that the rate of coloring was further accelerated by heating. The present invention was completed by utilizing this phenomenon. The nitrocellulose resin used in the present invention has a nitrogen content of 10.0 to 12.0%, and resins with various polymerization degrees commonly used for films, celluloids, lacquers, etc. can be used. In addition, to improve gloss, adhesion, and weather resistance, we use dewaxed dammar resin, rosin, ester gum, maleic acid resin,
Vinyl chloride resin, methacrylic acid resin, etc. can be blended. Furthermore, known plasticizers such as tricresyl phosphate, butyl phthalate, and phthalate can be used, and as solvents, ester solvents (butyl acetate, methyl acetate, etc.), ketone solvents (acetone, isobutyl methyl ketone, cyclohexanone, etc.) and ethereal solvents (Cellsolve, butyl Cellsolve, etc.) can be used.
In addition, co-solvents (methanol, ethanol, etc.) and diluents (benzene, toluene, xylene, etc.) can be appropriately selected to provide uniformity to the film. The amount of spiropyran added is based on the resin.
The amount is preferably about 0.01 to 20% by weight, and the color tone and light sensitivity can be selected depending on the type and concentration of spiropyran. The illuminance indicating material according to the present invention is basically composed of the above-mentioned materials,
The desired purpose can be achieved by forming a film or celluloid or coating it on a suitable support such as paper or glass. Furthermore, in order to stably maintain the light sensitivity of spiropyran, the surface of the material can be coated with a transparent polymer material, or an ultraviolet absorber can be used to block the effects of ultraviolet rays. There are two simple methods for measuring illuminance using the material of the present invention: The first method is to expose the film to visible light for a certain period of time, for example, about 10 to 30 minutes in indoor light, and measure the illuminance by comparing the degree of discoloration with a standard color table prepared in advance. Furthermore, if you extend the film in the form of a tape inside the room, you can check the illuminance balance in the room in the same way. The second method is to perform exposure with a gradient, for example every 5 minutes, and determine the illuminance based on the area of the portion where discoloration is saturated with visible light. Next, specific examples will be shown below. It will be appreciated that the following is only a few preferred embodiments of the invention. Therefore, the present invention is not limited in any way by these Examples. Example 1 5 g of dibutyl phthalate, 15 g in a mixed solvent of 7 c.c. of ethyl acetate, 23 c.c. of butyl acetate and 30 c.c. of toluene.
g of nitrocellulose, 12 g of alkite resin and
【表】
第１表に示すごとく完全変色の有無が明るさと
よく一致し、照度指示用素材として有用であるこ
とがみとめられた。
実施例 ３
１、３、３―トリメチルインドリノ―6′―ニト
ロ―8′―メトキシベンゾピリルスピラン（Ｓ―
２）
１、３、３―トリメチル―５―クロルインドリ
ノ―6′―ニトロベンゾピリルスピラン（Ｓ―３）
１、３、３―トリメチル―５―ブロムインドリ
ノ―6′―ニトロ―8′―エトキシベンゾピリルスピ
ラン（Ｓ―４）
１―ヘプチル―３、３―ジメチル―6′―ニトロ
ベンゾピリルスピラン（Ｓ―５）
―ブチル―３、３―ジメチル―6′―ニトロ―
8′―メトキシベンゾピリルスピラン（Ｓ―６）
の各スピロピランの適量につき、実施例１と同様
にして得た溶液を白色のビニルテープ上に塗布し
約10μの皮膜を作成した。これらの皮膜シートは
暗所で10時間放置するといずれも着色した。各々
のシートを500ルクスの照度をもつ机上に置き完
全変色状態を観察した結果を第２表に示す。[Table] As shown in Table 1, the presence or absence of complete discoloration corresponds well with brightness, and it was found that the material is useful as a material for indicating illuminance. Example 3 1,3,3-trimethylindolino-6'-nitro-8'-methoxybenzopyrylspirane (S-
2) 1,3,3-trimethyl-5-chloroindolino-6'-nitrobenzopyrylspiran (S-3) 1,3,3-trimethyl-5-bromoindolino-6'-nitro-8' -Ethoxybenzopyrylspirane (S-4) 1-Heptyl-3,3-dimethyl-6'-nitrobenzopyrylspiran (S-5) -Butyl-3,3-dimethyl-6'-nitro-
A solution of an appropriate amount of each spiropyran (8'-methoxybenzopyrylspirane (S-6)) obtained in the same manner as in Example 1 was applied onto a white vinyl tape to form a film of about 10 μm. All of these film sheets became colored when left in the dark for 10 hours. Table 2 shows the results of placing each sheet on a desk with an illuminance of 500 lux and observing the state of complete discoloration.
【表】
第２表から明らかなような変色速度はスピロピ
ランの種類および濃度により異なるので1000〜
5000ルクスを必要とする超精密作業から100〜300
ルクスでよい普通の作業まで測定の目的によつて
種々の最適な条件を選ぶことが可能である。
以上の説明で明らかな如く、本発明に係る照度
指示用素材はスピロピランを着色種として安定に
保持しその色調が可視光線の照射量に応じて変化
するもので、変色の程度により照度を明瞭に表示
し、しかも繰返し使用することが出来るものであ
る。
また、使用に際しては、フイルム、セルロイド
に成型しあるいは紙、ガラスなど適当な支持体に
塗布し皮膜となすことができ、シート状、プレー
ト状、ワツペン状など極めて簡便な形態とするこ
とが出来る為、価格の安い軽量で使い捨ての出来
るコンパクトな商品となすことが出来る。しかも
本発明は色変化を利用して、照度を指示する為、
美的感覚に優れた商品を形成しうる素材を提供す
るものである。[Table] As is clear from Table 2, the speed of discoloration varies depending on the type and concentration of spiropyran, so
100-300 from ultra-precision work requiring 5000 lux
It is possible to select various optimal conditions depending on the purpose of measurement, up to ordinary work where lux is sufficient. As is clear from the above explanation, the illuminance indicating material according to the present invention stably retains spiropyran as a colored species, and its color tone changes depending on the amount of visible light irradiation, and the illuminance can be clearly determined depending on the degree of discoloration. It can be displayed and used repeatedly. In addition, when used, it can be formed into a film or celluloid, or applied to a suitable support such as paper or glass to form a film, and can be made into extremely simple forms such as sheets, plates, and patch shapes. , it can be made into a compact product that is inexpensive, lightweight, and disposable. Moreover, since the present invention uses color change to indicate illuminance,
It provides materials that can be used to form products with excellent aesthetic sense.
Claims (1)
ロピラン化合物の１種または２種以上をニトロセ
ルロース系樹脂に保持してなる照度指示用素材。1. An illuminance indicating material comprising one or more indolinospiropyran compounds, which are photochromic materials, held in a nitrocellulose resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5841379A JPS55149812A (en) | 1979-05-11 | 1979-05-11 | Illumination intensity indicating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5841379A JPS55149812A (en) | 1979-05-11 | 1979-05-11 | Illumination intensity indicating material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55149812A JPS55149812A (en) | 1980-11-21 |
| JPS6144249B2 true JPS6144249B2 (en) | 1986-10-02 |
Family
ID=13083681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5841379A Granted JPS55149812A (en) | 1979-05-11 | 1979-05-11 | Illumination intensity indicating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55149812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02502602A (en) * | 1987-04-03 | 1990-08-16 | ゼニオン インダストリーズ インコーポレイテッド | Electrodynamic conversion methods and devices and systems including or utilizing the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0723470B2 (en) * | 1986-01-20 | 1995-03-15 | 東レ株式会社 | Photochromic molded article and method for producing the same |
| JPH0662929B2 (en) * | 1986-11-27 | 1994-08-17 | 農林水産省果樹試験場長 | Received light amount display material |
| JP2009014689A (en) * | 2007-07-09 | 2009-01-22 | Saitama Univ | Ultraviolet intensity measurement device using photochromic compound |
-
1979
- 1979-05-11 JP JP5841379A patent/JPS55149812A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02502602A (en) * | 1987-04-03 | 1990-08-16 | ゼニオン インダストリーズ インコーポレイテッド | Electrodynamic conversion methods and devices and systems including or utilizing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55149812A (en) | 1980-11-21 |
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