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    • 40. 发明授权
    • Microcapsule and method of making the same
    • 微胶囊及其制作方法
    • US06391288B1
    • 2002-05-21
    • US09625504
    • 2000-07-26
    • Kazuyuki MiyazawaIsamu KanedaToshio Yanaki
    • Kazuyuki MiyazawaIsamu KanedaToshio Yanaki
    • A61K742
    • A61Q19/00A61K8/0208A61K8/0212A61K8/11A61K8/73A61K9/5036A61K2800/28A61K2800/412A61Q1/02A61Q1/06A61Q1/08A61Q15/00A61Q17/04Y10S514/844Y10S514/937
    • A microcapsule of the present invention is characterized in that it encapsulate oil droplets having average particle size of 0.01 to 3 &mgr;m and its capsulating agent is a hydrophilic polymer gelling agent. The main component of the capsulating agent is preferably a hydrophilic polymer gelling agent which hardens by heating and cooling, and, in particular, agar or carrageenan. In the making method of the present invention, a microcapsule can be made efficiently due to no loss in the inner oil phase, and its particle size can easily be controlled. The microcapsule is excellent in shearing-resistance, store stability. Also, if the fracture strength of the microcapsule is within a specific range, a microcapsule which releasing characteristic of encapsulated oil droplets when applied is immediately-, gradually- or non-releasing can be obtained. Further, when such a hydrophilic microcapsule is coated, the contraction in air, dispersibility to various medium, and elusion of encapsulated components in medium can be also improved.
    • 本发明的微胶囊的特征在于,其包封平均粒度为0.01〜3μm的油滴,其包封剂为亲水性聚合物胶凝剂。 封装剂的主要成分优选为通过加热和冷却而硬化的亲水性聚合物胶凝剂,特别是琼脂或角叉菜胶。 在本发明的制造方法中,由于内部油相中没有损失,可以有效地制造微胶囊,并且可以容易地控制其粒径。 该微胶囊具有优异的抗剪切性,稳定性。 此外,如果微胶囊的断裂强度在特定范围内,则可以获得当施加时封装油滴的特性释放的微胶囊即时,逐渐或不释放。 此外,当涂布这样的亲水性微胶囊时,也可以提高空气中的收缩,各种介质的分散性和包封成分在培养基中的脱落。