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    • 1. 发明授权
    • Preparation of microparticles
    • 微粒的制备
    • US5648095A
    • 1997-07-15
    • US190022
    • 1994-07-08
    • Lisbeth IllumOlufunmiloyo Lilly Johnson
    • Lisbeth IllumOlufunmiloyo Lilly Johnson
    • A61K9/16A61K9/50A61K47/36A61K49/00A61K49/22B01J13/02B01J13/12A61K9/66
    • B82Y15/00A61K49/223A61K49/225A61K9/1694A61K9/5036A61K9/5052A61K9/5089B01J13/125
    • Hollow microcapsules or solid microspheres for use in diagnostic procedures, as well as methods for making the microcapsules, are provided, which are formed by combining a volatile oil with an aqueous phase including a water soluble material such as a starch, modified starch or proteinaceous material, or a polyethylene glycol (PEG) conjugate, to form a primary emulsion. The primary emulsion then is combined with a second oil, to form a secondary emulsion, and the material is permitted to harden and to form microcapsules around a liquid core of the volatile oil. At least part of the volatile oil then may be removed by evaporation to produce hollow microcapsules. Optionally, all of the volatile oil may be removed prior to hardening of the material, which produces solid microspheres. The The microcapsules can be used in a variety of applications for diagnostic purposes and for drug delivery.
    • PCT No.PCT / GB92 / 01421 Sec。 371日期:1994年7月8日 102(e)日期1994年7月8日PCT提交1992年8月3日PCT公布。 出版物WO93 / 02712 日期1993年2月18日提供了用于诊断程序的微胶囊或固体微球,以及制备微胶囊的方法,其通过将挥发性油与包含水溶性物质如淀粉的水相组合而形成, 改性淀粉或蛋白质材料,或聚乙二醇(PEG)缀合物,以形成初级乳液。 然后将初级乳液与第二种油组合以形成二级乳液,并允许该材料硬化并在挥发性油的液芯周围形成微胶囊。 然后可以通过蒸发除去至少部分挥发性油以产生中空微胶囊。 任选地,在产生固体微球的材料硬化之前,所有的挥发油都可以被去除。 微胶囊可用于各种诊断用途和药物递送应用。