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2. 发明公开

KR1020040031970A 생분해성 폴리에스테르 중합체 및 압축기체를 이용한 이의제조방법 失效
标题翻译：可生物降解的聚酯聚合物及其使用压缩气体生产该聚合物的方法
公开(公告)号：KR1020040031970A
公开(公告)日：2004-04-14
申请号：KR1020020061272
申请日：2002-10-08
申请人： 한국과학기술연구원
发明人： 이윤우 , 김수현 , 김영하 , 임종성 , 박종민 , 백지원
IPC分类号： C08G63/81
CPC分类号： C08G63/64 , C08G63/08 , C08G63/6882 , C08G63/81 , C08G63/823 , Y02P20/544 , Y10T428/2982
摘要： PURPOSE: A method for producing a biodegradable polyester polymer in a particulate form, is provided to simplify a conventional complicated process by excluding a milling process or use of any special device, and prevent discharge of hazardous solvents to environment. CONSTITUTION: The method for producing a biodegradable polyester polymer in a particulate form comprises the steps of: charging at least one cyclic monomer into a high pressure reactor; adding an organometallic or acid catalyst and an initiator; injecting compressed gas as a solvent, selected from the group consisting of HFC-23, HFC-32, HFC-152a, HFC-143a, HFC-134a, HFC-125, HFC-227ea, HFC-236fa, HFC-245fa, HFC-254cb, SF6, HFC-4-10-mee, C-318(perfluoro cyclobutane), HCFC-22, HCFC-1416, HCFC-1426, HCFC-225ca/cb, dimethyl ether, N2O, propane, butane, a mixture thereof and a mixture further comprising CO2 and the above mixture, into the reactor; and carrying out solution polymerization.
摘要翻译：目的：提供一种以颗粒形式生产可生物降解的聚酯聚合物的方法，以通过排除铣削过程或使用任何特殊装置来简化常规的复杂工艺，并且防止有害溶剂排放到环境中。构成：以颗粒形式生产可生物降解的聚酯聚合物的方法包括以下步骤：将至少一种环状单体装入高压反应器中; 加入有机金属或酸催化剂和引发剂; 注入压缩气体作为溶剂，选自HFC-23，HFC-32，HFC-152a，HFC-143a，HFC-134a，HFC-125，HFC-227ea，HFC-236fa，HFC-245fa，HFC -254cb，SF6，HFC-4-10-mee，C-318（全氟环丁烷），HCFC-22，HCFC-1416，HCFC-1426，HCFC-225ca / cb，二甲醚，N2O，丙烷，丁烷，并将进一步包含CO 2和上述混合物的混合物加入到反应器中; 并进行溶液聚合。

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