JP5110900B2 - 加熱調理用温度管理インジケータ - Google Patents
加熱調理用温度管理インジケータ Download PDFInfo
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- JP5110900B2 JP5110900B2 JP2007038872A JP2007038872A JP5110900B2 JP 5110900 B2 JP5110900 B2 JP 5110900B2 JP 2007038872 A JP2007038872 A JP 2007038872A JP 2007038872 A JP2007038872 A JP 2007038872A JP 5110900 B2 JP5110900 B2 JP 5110900B2
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Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
先ず、電子供与性化合物1重量部、電子受容性化合物の0.1〜50重量部、熱溶融性物質の10〜3000重量部、添加剤として退色防止剤の0.1〜10重量部を混合し、加熱溶融させて、均一な混合物を調製する。または、溶媒を10〜300重量部混合してもよい。この混合物とマイクロカプセル形成用原材料とから、マイクロカプセル20を調製する。マイクロカプセル20の1〜10重量部、バインダーの1〜20重量部、及び溶媒の1〜100重量部を混練して、変色性インキを調製する。透明又は半透明のインジケータ基材10の観察面側へこのインキを印刷により塗布し、変色性インキ層11を形成する。温度が変化しても変色しない不変色インキで、加熱温度を表示する文字や図柄を変色性インキ層11に重ねて印刷して、不変インキ層12を形成する。そこに粘着剤を付して粘着層13を設ける。それに保護基材14を貼付すると、図1の(b)に示すような可逆性示温材15が得られる。
水を張った鍋に、生卵と一緒にこのインジケータ1を入れる。鍋を加熱する前の低温状態では、加熱調理用温度管理インジケータ1は、マイクロカプセル20中で、熱溶融性物質が凝固している所為で、電子供与性化合物と電子受容性化合物とが、接触できず、電子供与性化合物が電子受容性化合物へ電子供与できないから、図2の(a)に示すように、電子受容性化合物自体の色が、現れている。
電子受容性化合物としてクリスタルバイオレットラクトン2g、電子供与性化合物として4−ヒドロキシクマリン5g、熱溶融性物質としてステアリルアルコール(日本油脂(株)製)の50g、退色防止剤として亜リン酸トリフェニル1gを混合し、70℃に加熱して溶融させ、均一な混合物を調製した。この混合物と、エピコート828(油化シェルエポキシ(株)製:商品名)の5gとを混ぜ、90℃に熱した1.5%アルギン酸ナトリウム水溶液1000mL中に分散させて撹拌した。その分散液にエピキュアU(油化シェルエポキシ(株)製:商品名)の10gを添加してマイクロカプセルを得た。マイクロカプセル60gと、バインダーとしてインキビヒクル金銀用バインダー((株)ミノブループ製:商品名)の150gと、水性蛍光塗料スカーレット(シンロイヒ(株)製:商品名)の30gとを混練して、変色性インキを調製した。インジケータ基材であるポリエステルフィルムに、このインキを塗布し、溶媒を乾燥させ、インキ塗布面に感圧接着剤を付け、保護基材としてポリエステルフィルムを貼り、直径50mmの円形の可逆性示温材を形成した。
Claims (6)
- フェノール性水酸基含有化合物からなる電子受容性化合物の0.1〜50重量部と、この化合物に接触し可逆的に電子を供与して変色するものでトリフェニルメタンフタリド類、フルオラン類、スピロピラン類、フェノチアジン類、インドールフタリド類、ロイコオーラミン類、ローダミンラクタム類、ジアリールフタリド類、ポリアリールカルビノール類、アシルオーラミン類及びアリールオーラミン類から選ばれるロイコ染料からなる電子供与性化合物の1重量部と、検知すべき加熱温度で溶融して該接触させる熱溶融性物質の10〜3000重量部と、亜リン酸トリフェニル、亜リン酸ジフェニル、亜リン酸ジフェニルクレジル、亜リン酸トリクレジル及び亜リン酸トリ−n−ドデシルから選ばれる亜リン酸エステル類である退色防止剤の0.1〜10重量部との溶融混合物の水溶液中への分散体を内包するものでゼラチン、カゼイン及びアルブミンから選ばれるタンパク質と、アラビアゴム、寒天、アルギン酸ナトリウム及びセルロース誘導体から選ばれる炭水化物と、ポリエチレンスルホン酸、ビニル化合物−無水フタル酸の共重合体及びポリ尿素から選ばれる高分子との何れかで形成されたマイクロカプセルが、該加熱温度の熱を経時的に内部へ伝播して順次該溶融させる被検査物形状に合わせた立体状の樹脂成型材内で、インジケータ基材、樹脂板、又は樹脂成形材に練り込まれつつ、それが該樹脂成型材の該内部の全体又はその断面の全面に、埋没されていることを特徴とする加熱調理用温度管理インジケータ。
- 該マイクロカプセルが、該インジケータ基材又は樹脂板に練り込まれつつ、該内部の断面の全面に該埋没されていることを特徴とする請求項1に記載の加熱調理用温度管理インジケータ。
- 該インジケータ基材上に、該加熱温度を表示する文字及び/又は図柄が、不変色性のインキで、印刷されていることを特徴とする請求項2に記載の加熱調理用温度管理インジケータ。
- 該マイクロカプセルが、円柱状の該樹脂成型材に練り込まれて該埋没されていることを特徴とする請求項1に記載の加熱調理用温度管理インジケータ。
- 該樹脂成型材が、球状、半球状、柱状及び錘状の何れかの該立体状であることを特徴とする請求項1に記載の加熱調理用温度管理インジケータ。
- 水銀非含有であることを特徴とする請求項1に記載の加熱調理用温度管理インジケータ。
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