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    • 10. 发明授权
    • Material for pressure measurement
    • 用于压力测量的材料
    • US08314050B2
    • 2012-11-20
    • US12668022
    • 2008-06-27
    • Masanobu Takashima
    • Masanobu Takashima
    • B41M5/165
    • G01L1/247H05K1/0269H05K3/1233Y10T428/254
    • A material for pressure measurement is provided, the material having a substrate made of plastic, a color forming agent layer containing a colorless electron-donating dye precursor and a color developing agent layer containing an electron-accepting compound, the material for pressure measurement forming a color utilizing a color forming reaction between the colorless electron-donating dye precursor and the electron-accepting compound, wherein the colorless electron-donating dye precursor is included in a microcapsule containing an urethane bond, wherein at least one kind of the electron-accepting compound is a metal salt of salicylic acid having a substituent, and wherein the microcapsule satisfies a relation δ/D=from 1.0×10−3 to 2.0×10−2, where δ is a number-average wall thickness (μm) of the microcapsules, and D is a median diameter (μm) of microcapsules on a volume basis.
    • 提供了一种用于压力测量的材料,所述材料具有由塑料制成的基底,含有无电子给体染料前体的成色剂层和含有电子接受性化合物的显色剂层,用于压力测量的材料形成 利用无色供电子性染料前体和电子接受性化合物之间的着色反应的颜色,其中无色供电子性染料前体包含在含有氨基甲酸酯键的微胶囊中,其中至少一种电子接受性化合物 是具有取代基的水杨酸金属盐,其中微胶囊满足关系式δ/ D = 1.0×10-3〜2.0×10-2,其中δ是微胶囊的数均壁厚(μm) ,D是基于体积的微胶囊的中值粒径(μm)。