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    • 3. 发明授权
    • Process for preparing controlled-released chitosan microcapsule
    • 制备受控释放的壳聚糖微胶囊的方法
    • US06228291B1
    • 2001-05-08
    • US09342070
    • 1999-06-29
    • Jung-min LeeChoong Kyun YeomChul Ung KimBeom Sik KimKwang Joo KimSang Bong Oh
    • Jung-min LeeChoong Kyun YeomChul Ung KimBeom Sik KimKwang Joo KimSang Bong Oh
    • B01J1302
    • B01J13/16Y10S514/963Y10T428/2984
    • The present invention relates to a process for preparing the controlled-release chitosan microcapsule, more specifically to a process for preparing the sustained-release chitosan microcapsule capable of releasing at an appropriate rate for a long time, which is characterized by: a) Biodegradable chitosan polymer is used for the capsule material; b) The capsule is kept stable during the release time by the rapid and effective crosslinking reaction between the chitosan polymer and the double crosslinking agent on the surface of tiny particles formed by a new emulsion interface reaction method using a double crosslinking agent of sulfuric acid and glutaraldehyde; and c) The microcapsule which is smaller than several &mgr;m s can be easily formed and the capsule is kept stable for a long release time because an insoluble polymer film whose source material is biodegradable is formed after the release.
    • 本发明涉及一种制备控制释放壳聚糖微胶囊的方法,更具体地涉及能够长时间以适当速率释放的缓释壳聚糖微胶囊的制备方法,其特征在于:a)可生物降解的壳聚糖 聚合物用于胶囊材料; b)胶囊在释放时间内通过壳聚糖聚合物和双交联剂之间的快速有效的交联反应在通过新的乳液界面反应方法形成的微小颗粒的表面上保持稳定,该方法使用 硫酸和戊二醛的双交联剂; 和)可以容易地形成小于几个微米的微胶囊,并且由于在释放后形成源材料是可生物降解的不溶性聚合物膜,所以胶囊保持稳定的长时间释放时间。