JPS6245672A - Paint changing color on exposure to radiation - Google Patents
Paint changing color on exposure to radiationInfo
- Publication number
- JPS6245672A JPS6245672A JP18493085A JP18493085A JPS6245672A JP S6245672 A JPS6245672 A JP S6245672A JP 18493085 A JP18493085 A JP 18493085A JP 18493085 A JP18493085 A JP 18493085A JP S6245672 A JPS6245672 A JP S6245672A
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- polymer
- blue
- color
- contg
- 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.)
- Granted
Links
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、放射線の簡便な線量測定用の放射線変色塗料
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a radiation color-changing paint for simple radiation dose measurement.
近年、放射線の工業利用は、食品照射、医療器具の滅菌
、電線、収縮チューブ等のプラスチックの架橋等と非常
に広範囲の産業分野にわたっている。これらの放射線利
用に際しては、放射線量を簡便な方法で測定し管理する
ことが必要であり、これまで線量計としては、三酢酸セ
ルロースフィルム（ＣＴＡ ） 線量計、ポリエチレン
テレフタレートフィルム（ＰＥＴ）線量計、ポリメチル
メタクリレ−）（ＰＭＭＡ）線量計、ポリカーボネート
線量計、ブルーセロファン線量計、ラジオクロミック線
量計等がある。更には、ポリ塩化ビニルをベースとした
照射変色テープがある。In recent years, industrial use of radiation has spread to a very wide range of industrial fields, including food irradiation, sterilization of medical instruments, and cross-linking of plastics such as electric wires and shrink tubes. When using these types of radiation, it is necessary to measure and manage the radiation dose using a simple method. So far, the dosimeters used have been cellulose triacetate film (CTA) dosimeters, polyethylene terephthalate film (PET) dosimeters, Examples include polymethyl methacrylate (PMMA) dosimeters, polycarbonate dosimeters, blue cellophane dosimeters, and radiochromic dosimeters. Furthermore, there are irradiation discoloration tapes based on polyvinyl chloride.
しかし乍らＣＴＡ、 ＰＥＴ、 ＰＭＭＡ１ブルーセ
ロファン等の線量計では、線量測定の為に照射後紫外線
吸光度計等により吸光度を測定する必要があり、簡便な
線量計とは言い難い。一方ｐｖｃ変色テープでは１０
Ｍｒａｄ以下の照射線量では、変色が比較的鮮明である
が、照射線量が１０Ｍｒａｄを越えると照射線量と変色
の感度が鈍く、食品照射や医療用殺菌等の比較的低線量
分野では有効であるが、電線、収縮チューブ等の１０Ｍ
ｒａｄ以上の照射線量が要求される分野では使用出来な
いものである。However, with dosimeters such as CTA, PET, and PMMA1 blue cellophane, it is necessary to measure the absorbance using an ultraviolet absorbance meter or the like after irradiation in order to measure the dose, so it is difficult to say that they are simple dosimeters. On the other hand, PVC color changing tape has 10
At an irradiation dose below Mrad, the discoloration is relatively clear, but when the irradiation dose exceeds 10 Mrad, the sensitivity of the irradiation dose and discoloration becomes dull, so it is effective in relatively low-dose fields such as food irradiation and medical sterilization. , electric wire, shrink tube, etc. 10M
It cannot be used in fields where an irradiation dose of rad or more is required.
上記に鑑み本発明は、特に１０ｈｉｒａｄ以上の比較的
高線量領域での簡便な照射線量測定という要求に答える
べ（開発されたものである。以下に詳細＆二本発明を説
明する。In view of the above, the present invention has been developed to meet the need for simple irradiation dose measurement particularly in a relatively high dose region of 10 hirad or more.The present invention will be described in detail below.
本発明は、分子構造内にハロゲンを含むポリマーに、ｐ
Ｈの変化により変色する色素及びエポキシ化合物を添加
した樹脂組成物を、該ポリマーの良溶媒に溶解させ必要
に応じ分散剤、無機フィラー等を添加したもので、放射
線を照射することにより変色することを特徴とする放射
線変色塗料である。The present invention provides a polymer containing a halogen in its molecular structure.
A resin composition containing a pigment and an epoxy compound that changes color due to a change in H is dissolved in a good solvent for the polymer, and a dispersant, an inorganic filler, etc. are added as necessary, and the resin composition changes color when irradiated with radiation. It is a radiation color-changing paint that is characterized by:
上記により、放射線照射により変色する塗料が得られる
。Through the above process, a paint that changes color upon irradiation with radiation can be obtained.
ここで言う放射線とは、電子線、ｒ線、Ｘ線、紫外線等
である。The radiation referred to here includes electron beams, r-rays, X-rays, ultraviolet rays, and the like.
上記に於いて、ハロゲンを含むポリマーとじては、塩化
ビニル樹脂、塩化ヒニルー酢酸ビニル共重合体、エチレ
ン−酢酸ビニル−塩化ビニルグラフトマー、クロロプレ
ンゴム、クロルスルフォン化エチレンゴム、塩化ビニリ
デン樹脂、弗化ビニリデン樹脂、弗化ビニリデン−六弗
化プロピレン共重合体、弗化ビニリデン−四弗化エチレ
ン共重合体などである。In the above, polymers containing halogens include vinyl chloride resin, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate-vinyl chloride graftomer, chloroprene rubber, chlorosulfonated ethylene rubber, vinylidene chloride resin, fluorinated These include vinylidene resin, vinylidene fluoride-propylene hexafluoride copolymer, vinylidene fluoride-ethylene tetrafluoride copolymer, and the like.
分子構造内にハロゲンを含むポリマーをベースとしたこ
とにより電離放射線の作用によりハロゲンが単離又は水
素付加し系のｐＨ変化をもたらす結果となる。Since the polymer is based on a polymer containing a halogen in its molecular structure, the halogen is isolated or hydrogenated by the action of ionizing radiation, resulting in a change in the pH of the system.
色素としては、ｐＨの変化により色が変わるものであれ
ば良いのであるが、特にフェノールフタレイン、メチル
イエロー、ブロモチモールブルー、ブロモフェノールブ
ルー、チモールブルー、ブロモクレゾールグリーン、メ
チルレッドから成る群より選ばれた色素を単独又は二種
類以上組合せて用いることにより、放射線照射による色
の変化がより顕著になる。The pigment may be any color as long as it changes color depending on changes in pH, but in particular it may be selected from the group consisting of phenolphthalein, methyl yellow, bromothymol blue, bromophenol blue, thymol blue, bromocresol green, and methyl red. By using one or more dyes in combination, the color change caused by radiation irradiation becomes more noticeable.
エポキシ化合物としては、分子構造内にエポキシ基を持
つものであれば良く、エポキシ化大豆油、エポキシ系可
塑剤、エポキシ樹脂等である。The epoxy compound may be any compound having an epoxy group in its molecular structure, such as epoxidized soybean oil, epoxy plasticizers, and epoxy resins.
エポキシ化合物を添加する目的は、照射線量に対応する
変色域をコントロールする為である。又、エポキシ化合
物の添加量は、使用する色素系及び照射線量−変色域の
設定によって異なるものであ〔実施例〕
実施例−１
ポリ塩化ビニルに対しメチルイエローラ２．５ ＰＨＲ
添加した樹脂組成物に、エポキシ化合物として、エポキ
シ化脂肪酸エステル（オキシラン酸素４０〜４５％）を
ポリ塩化ビニルに対し、５．１Ｏ１１５，２０ＰＨＲ添
加し、酢酸ブチルに溶解し照射変色塗料となした。該照
射変色塗料をポリエステルフィルム上に塗布し、乾燥後
、０．４ＭｅＶ の電子線を各々６．１２．２４．８
６．４８ Ｍｒａｄ照射し変色の程度を確認した。この
照射による変色の状況を第１表に示した。この表から明
らかな様にエポキシ化脂肪酸エステルの添加量に比例し
、変色領域が高線量側に移行することがわかる。この様
に高線量領域においても簡便な線量計として使用できる
ことが確認できた。The purpose of adding the epoxy compound is to control the area of discoloration corresponding to the irradiation dose. In addition, the amount of epoxy compound added varies depending on the dye system used and the setting of irradiation dose and discoloration area. [Example] Example 1 Methyl Yellowa 2.5 PHR for polyvinyl chloride
To the added resin composition, an epoxidized fatty acid ester (oxirane oxygen 40 to 45%) was added as an epoxy compound in an amount of 5.1O115,20PHR based on polyvinyl chloride, and dissolved in butyl acetate to obtain an irradiation discoloration paint. The irradiated color-changing paint was applied onto a polyester film, and after drying, an electron beam of 0.4 MeV was applied at 6.12.24.8, respectively.
It was irradiated with 6.48 Mrad and the degree of discoloration was confirmed. Table 1 shows the discoloration caused by this irradiation. As is clear from this table, the discoloration region shifts to the high dose side in proportion to the amount of epoxidized fatty acid ester added. In this way, it was confirmed that it can be used as a simple dosimeter even in high dose areas.
実施例−２゜
ポリ塩化ビニルに対し、ブロモクレゾールグリーンを２
．５ＰＨＲ添加した樹脂組成物にエポキシ化大豆油（オ
キシラン酸素６．８％）をポリ塩化ビニルに対し、３．
７．１０．１３ ＰＨＲ各々添加し、テトラヒドロフラ
ンに溶解し、照射変色塗料となした。Example - 2゜Bromocresol green for polyvinyl chloride
．． 3. Epoxidized soybean oil (6.8% oxirane oxygen) was added to the resin composition to which 5 PHR was added to polyvinyl chloride.
7.10.13 Each PHR was added and dissolved in tetrahydrofuran to form an irradiation color-changing paint.
該照射変色塗料をポリエステルフィルム上に塗布し、乾
燥後０．４ＭｅＶ の電子線を各々、６．１２．２４
．３６．４８Ｍｒａｄ照射し、変色の程度を確認した。The irradiated color-changing paint was applied onto a polyester film, and after drying, an electron beam of 0.4 MeV was applied to each film on 6.12.24.
．． It was irradiated with 36.48 Mrad and the degree of discoloration was confirmed.
この照射による変色の状況を第２表に示した。この表か
ら、高線量領域において
〔発明の効果〕
本発明になる塗料は高線量領域において簡便に線量計と
して使用出来る。Table 2 shows the discoloration caused by this irradiation. From this table, it can be seen that in a high dose area [Effect of the invention] The paint according to the present invention can be easily used as a dosimeter in a high dose area.
手 続 補 正 古
昭和６１年４月９日
１、事件の表示
昭和６０年特許願第１８４９３０号
２ 発明の名称
放射線変色塗料
ｌ 補正をする者
事件との関係 特許出順人
住 所 大阪市東区北浜５丁目１５番地名 称（
２１３）住友電気工業株式会社社 長 川 上
哲 部４、代理人
住 所 大阪市此花区島屋１丁目１番３号住
友電気工業株式会社内
６、補正の対象
明細宿生発明の詳細な説明の欄
７、補正の内容
（１）明細書第６頁第１５行の「高線量領域においた。Procedures Amendment April 9, 1985 1. Indication of the case 1985 Patent Application No. 184930 2. Title of the invention: Radiation discoloration paint l. Person making the amendment. Relationship with the case. Address of the person who filed the patent. Address: Higashi-ku, Osaka City. Kitahama 5-15 name (
213) Tetsu Kawakami, President, Sumitomo Electric Industries, Ltd. Department 4, Agent address: 6, Sumitomo Electric Industries, Ltd., 1-1-3 Shimaya, Konohana-ku, Osaka City, Detailed explanation of the subject matter of the amendment Column 7, Contents of amendment (1) In the specification, page 6, line 15, “The product was placed in a high dose area.
ＪJ
Claims (2)
変化により変色する色素と、エポキシ化合物と、前記ポ
リマーの良溶媒とから成ることを特徴とする放射線変色
塗料。(1) A radiation color-changing paint characterized by comprising a polymer containing a halogen in its molecular structure, a dye that changes color due to changes in pH, an epoxy compound, and a good solvent for the polymer.
、ブロモチモールブルー、ブロモフェノールブルー、チ
モールブルー、ブロモクレゾールグリーン、メチルレッ
ドから成る群より選ばれた単独又は組合せである特許請
求の範囲第１項記載の放射線変色塗料。(2) Claim 1, wherein the pigment is selected from the group consisting of phenolphthalein, methyl yellow, bromothymol blue, bromophenol blue, thymol blue, bromocresol green, and methyl red, either alone or in combination. Radiation color changing paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18493085A JPS6245672A (en) | 1985-08-23 | 1985-08-23 | Paint changing color on exposure to radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18493085A JPS6245672A (en) | 1985-08-23 | 1985-08-23 | Paint changing color on exposure to radiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6245672A true JPS6245672A (en) | 1987-02-27 |
| JPS6229467B2 JPS6229467B2 (en) | 1987-06-26 |
Family
ID=16161829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18493085A Granted JPS6245672A (en) | 1985-08-23 | 1985-08-23 | Paint changing color on exposure to radiation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6245672A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006105191A3 (en) * | 2005-03-29 | 2007-03-29 | C2C Technologies Llc | Novelty compositions with color changing indicator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63196471U (en) * | 1987-06-06 | 1988-12-16 |
-
1985
- 1985-08-23 JP JP18493085A patent/JPS6245672A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006105191A3 (en) * | 2005-03-29 | 2007-03-29 | C2C Technologies Llc | Novelty compositions with color changing indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6229467B2 (en) | 1987-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5206118A (en) | Acid-sensitive leuco dye polymeric films | |
| DE217069T1 (en) | SMOKABLE SYNTHETIC FOOD PACKAGING FILM. | |
| JP3307768B2 (en) | Gamma radiation detector | |
| CA1301959C (en) | Dosimeter | |
| US4001587A (en) | Color indicator-dosimeter of ionizing radiation | |
| EP0389113A2 (en) | Acid-sensitive leuco dye polymeric films | |
| DE2545610A1 (en) | THERMAL INSULATION MATERIAL AND METHOD FOR SHIELDING RADIANT HEAT | |
| JPS6245672A (en) | Paint changing color on exposure to radiation | |
| JPH01158090A (en) | Method for stabilizing ultraviolet ray absorber | |
| JPH021866B2 (en) | ||
| JPS629285A (en) | Radiation dosimeter | |
| Sidney et al. | A new radiochromic dosimeter film | |
| RU2298811C1 (en) | Ionizing radiation film chemical dose meter and method of making the dose meter | |
| JPH0511867B2 (en) | ||
| JPS62293177A (en) | Radiation dosimeter | |
| AU599088B2 (en) | Tinted heat-shrinkable multilayer films comprising a vinylidene chloride-vinyl chloride copolymer | |
| JPS62293178A (en) | Radiation dosimeter | |
| JPS62297774A (en) | Radiation dosimeter | |
| JPS6272763A (en) | Color-changeable coating by radiation | |
| JPH0672929B2 (en) | Radiation dosimeter | |
| SU478544A1 (en) | Ionizing radiation colour indicator-dosimeter | |
| RU2454681C1 (en) | Colour visual indicator of absorbed ionising radiation dose | |
| KR930019742A (en) | Method for improving color stability against sterilizing radiation of polyolefin composition | |
| JP2009265034A (en) | Color dosimeter | |
| JPS57137117A (en) | Stretched film for package |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |