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    • 75. 发明授权
    • Method for preparing biodegradable polyester and itself prepared thereby
    • 制备可生物降解聚酯的方法及其制备
    • US07138179B2
    • 2006-11-21
    • US10471127
    • 2002-02-20
    • Kyeong Ah KimByung Kun SonYong Gun Jeon
    • Kyeong Ah KimByung Kun SonYong Gun Jeon
    • B32B5/16C08F283/14C08L61/00
    • C08G63/08C08G63/78Y10T428/2982
    • Disclosed is a method for preparing a biodegradable polymer in the form of uniform powder or spherical particles by dispersion polymerization without a grinding step. The method for preparing a biodegradable polyester includes dispersing a monomer in the presence of a catalyst in a dispersion solvent to form a solid or liquid phase for dispersion polymerization and thereby to yield a biodegradable aliphatic polyester in the form of spherical particles or powder, the monomer comprising a mixture of a first compound (e.g., lactide or glycolide) and a second compound being selected from the group consisting of polyhydric alcohols (e.g., glycerin, erythritol, penterythritol or dipentaerythritol) and carprolactone. The present invention readily prepares a biodegradable polymer having a high molecular weight in the form of uniform powder or spherical particles.
    • 公开了通过分散聚合制备均匀粉末或球形颗粒形式的可生物降解聚合物的方法,而不用研磨步骤。 制备可生物降解的聚酯的方法包括在催化剂存在下将分散单体分散在分散溶剂中以形成用于分散聚合的固相或液相,从而得到球形颗粒或粉末形式的可生物降解的脂族聚酯,单体 包括第一化合物(例如丙交酯或乙交酯)和选自多元醇(例如,甘油,赤藓糖醇,季戊四醇或二季戊四醇)和卡内酯的第二化合物的混合物。 本发明容易制备具有均匀粉末或球形颗粒形式的高分子量的生物可降解聚合物。
    • 77. 发明授权
    • Method for manufacturing crystalline layered sodium disilicate
    • 制备结晶层状二硅酸钠的方法
    • US06740300B1
    • 2004-05-25
    • US09762435
    • 2001-04-10
    • Jung Min LeeJeong Kwon SuhSoon Yong JeongChun Hee ParkJeong Hwan ParkJong Ah Kim
    • Jung Min LeeJeong Kwon SuhSoon Yong JeongChun Hee ParkJeong Hwan ParkJong Ah Kim
    • C01B3332
    • C01B33/32
    • The present invention relates to an improved method for manufacturing a crystalline layered sodium disilicate and more particularly, to the improved method for manufacturing the crystalline layered sodium disilicate comprising the steps including the preparation of granules in a certain ratio of anhydrous sodium silicate cullet, a starting material, in the presence of some binders such as water and an aqueous solution of sodium silicate, followed by a crystallization step of the granules, thus ensuring that a small amount of final product is recycled to the prior crystallization step in order to prevent the attachment of granules to an inner crystallization device, which occurs due to local sintering in a high-temperature crystallization condition of continual process and also to further enhance the unit productivity during the mass production of crystalline layered sodium disilicate.
    • 本发明涉及一种用于制造结晶层状二硅酸钠的改进方法,更具体地说,涉及制备结晶层状二硅酸钠的改进方法,包括以下步骤:以一定比例制备无水硅酸钠碎玻璃的颗粒,起始 在一些粘合剂如水和硅酸钠水溶液的存在下,然后进行颗粒的结晶步骤,从而确保少量的最终产物被循环到现有的结晶步骤以防止附着 颗粒到内部结晶装置,其由于在连续工艺的高温结晶条件下的局部烧结而发生,并且还在大量生产结晶层状二硅酸钠期间进一步提高单元生产率。