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    • 5. 发明申请
    • SILICONE RUBBER COMPOSITIONS COMPRISING BISMUTH OXIDE AND ARTICLES MADE THEREFROM
    • 含硅氧烷的硅橡胶组合物及其制品
    • US20110112406A1
    • 2011-05-12
    • US13006677
    • 2011-01-14
    • Slawomir RubinsztajnLowell Scott SmithCharles Edward Baumgartner
    • Slawomir RubinsztajnLowell Scott SmithCharles Edward Baumgartner
    • A61B8/00
    • G10K11/30C08G77/04C08L83/04
    • The present invention provides novel filled silicone compositions comprising a nano-particulate metal oxide filler selected from nano-particulate monoclinic alpha-phase bismuth oxide, nano-particulate erbium oxide, and mixtures thereof. The new composite compositions exhibit a combination of outstanding performance characteristics in both the cured and uncured states. Thus, the uncured formulations are typically free flowing liquids which are self-leveling, which de-gas readily under vacuum, are readily colorable through the addition of pigments, and which cure at temperatures of about 60° C. The cured compositions possess outstanding acoustic characteristics which make them ideally suited for use in applications such as acoustic lenses for medical imaging and therapy. For example, the acoustic impedance of compositions provided by the present invention is closely matched to the acoustic impedance of human tissue. This may result in an enhancement of ultrasound transmission efficiency between the lens of an ultrasound probe comprising such a composition and the patient.
    • 本发明提供新型填充的硅氧烷组合物,其包含选自纳米颗粒单斜晶α-氧化铋,纳米颗粒铒氧化物及其混合物的纳米颗粒金属氧化物填料。 新的复合组合物在固化状态和未固化状态下显示出突出的性能特征的组合。 因此,未固化的制剂通常是自流平液体,其是自流平的,其在真空下容易地脱气,通过添加颜料容易着色,并且在约60℃的温度下固化。固化的组合物具有优异的声学 使其非常适合用于诸如用于医学成像和治疗的声学透镜的应用中。 例如,由本发明提供的组合物的声阻抗与人体组织的声阻抗紧密匹配。 这可能导致包括这种组合物的超声波探头的透镜与患者之间的超声传输效率的增强。