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1. 发明授权

US06525109B2 Process of preparing polycarbonates using microwave 有权
标题翻译：使用微波制备聚碳酸酯的工艺
公开(公告)号：US06525109B2
公开(公告)日：2003-02-25
申请号：US09903602
申请日：2001-07-13
申请人： Kil-Yeong Choi , Jae Heung Lee , Young Chan Ko , Il Seok Choi , Cheol-Hyun Kim , Kwang Soo Yoon , Kyong Soon Lee
发明人： Kil-Yeong Choi , Jae Heung Lee , Young Chan Ko , Il Seok Choi , Cheol-Hyun Kim , Kwang Soo Yoon , Kyong Soon Lee
IPC分类号： C08F246
CPC分类号： C08J3/28 , C08G64/307 , C08J2369/00
摘要： The present invention relates to a process of preparing polycarbonate, more specifically to a process of preparing polycarbonates by solid state polymerization using microwave radiation, which comprises steps of preparing polycarbonate prepolymer having a certain range of viscosity average molecular weight; converting said polycarbonate prepolymer into crystalline particles having a certain degree of crystallinity; and producing polycarbonates by solid state polymerization of said crystalline particles by applying microwave radiation, thus resulting in production of high quality polycarbonates with high molecular weight within short time.
摘要翻译：本发明涉及一种制备聚碳酸酯的方法，更具体地涉及使用微波辐射固相聚合制备聚碳酸酯的方法，其包括制备具有一定粘度平均分子量范围的聚碳酸酯预聚物的步骤; 将所述聚碳酸酯预聚物转化为具有一定结晶度的结晶颗粒; 并通过微波辐射使所述结晶颗粒的固态聚合制备聚碳酸酯，从而在短时间内生产高分子量的高质量聚碳酸酯。

2. 发明授权

US06323305B1 Process for preparing polyethylene naphthalate based polymers by using NDCA or its derivates 有权
标题翻译：通过使用NDCA或其衍生物制备聚萘二甲酸乙二醇酯基聚合物的方法
公开(公告)号：US06323305B1
公开(公告)日：2001-11-27
申请号：US09589267
申请日：2000-06-07
申请人： Hyun Nam Cho , Jae Min Hong , Hyoung-Wook Lee , Young Chan Ko , Il Seok Choi
发明人： Hyun Nam Cho , Jae Min Hong , Hyoung-Wook Lee , Young Chan Ko , Il Seok Choi
IPC分类号： C08G6302
CPC分类号： C08G63/78 , C08G63/189
摘要： The present invention provides a process for preparing polyethylene naphthalate polymers comprising: esterifying a slurry comprising NDCA or a dicarboxylic acid containing NDCA or derivatives thereof, and ethylene glycol or a glycol containing ethylene glycol or derivatives thereof to produce esterification compounds comprising bis (beta-hydroxyethyl) naphthalate or low molecular weight polymers thereof, wherein one or more primary alcohol is added to the slurry; and polycondensing the above resultant esterification compounds to produce polyethylene naphthalate polymers. The process of the present invention allows for the preparation of a slurry more easily and to maximize the manufacturing efficiency. Ultimately, it is possible to increase the productivity of the PEN polymers and to obtain high quality PEN since the method of the present invention has an effect of minimizing side products of the polymerization by reducing the amount of ethylene glycol considerably and of shortening the reaction time of the esterification reaction.
摘要翻译：本发明提供了一种制备聚萘二甲酸乙二醇酯聚合物的方法，包括：将包含NDCA或含有NDCA或其衍生物的二羧酸的淤浆和含乙二醇的乙二醇或其衍生物或其衍生物酯化，制备含有二（β-羟乙基）萘二甲酸酯或其低分子量聚合物，其中将一种或多种伯醇加入到浆料中; 并缩聚上述所得酯化化合物以制备聚萘二甲酸乙二醇酯聚合物。本发明的方法允许更容易地制备浆料并且最大化制造效率。最终，可以提高PEN聚合物的生产率并获得高质量的PEN，因为本发明的方法具有通过显着减少乙二醇的量并缩短反应时间而使聚合的副产物最小化的效果的酯化反应。

3. 发明授权

US06232432B1 Process for the preparation of polycarbonates 有权
标题翻译：聚碳酸酯的制备方法
公开(公告)号：US06232432B1
公开(公告)日：2001-05-15
申请号：US09605394
申请日：2000-06-29
申请人： Kil-Yeong Choi , Jae Heung Lee , Sung-Goo Lee , Sang Hyun Park , Young Chan Ko , Il Seok Choi , Kwang Soo Yoon
发明人： Kil-Yeong Choi , Jae Heung Lee , Sung-Goo Lee , Sang Hyun Park , Young Chan Ko , Il Seok Choi , Kwang Soo Yoon
IPC分类号： C08G6400
CPC分类号： C08G64/307
摘要： The present invention relates to a process for the preparation of polycarbonates, more specifically to a process for the preparation of polycarbonates by a solid polymerization of prepolymers obtained by the polymerization between aromatic dihydroxides and diarylcarbonates, which comprises: a) preparing said prepolymer having a viscosity average molecular weight of 4,000-18,000 g/mole; b) preparing a microporous foam by injecting high-pressure inert gas; and c) preparing polycarbonates by a solid polymerization, which facilitates the removal of phenol, a by-product, and enhances molecular weight of polycarbonates without using any catalyst due to the relatively high polymerization rate.
摘要翻译：本发明涉及一种制备聚碳酸酯的方法，更具体地涉及通过芳香族二氢氧化物和二芳基碳酸酯之间的聚合得到的预聚物的固体聚合制备聚碳酸酯的方法，该方法包括：a）制备所述预聚物的粘度平均分子量为4,000-18,000g / mol; b）通过注入高压惰性气体制备微孔泡沫; 和c）通过固体聚合制备聚碳酸酯，其有助于除去苯酚，副产物，并且由于相对高的聚合速率而不使用任何催化剂，从而提高聚碳酸酯的分子量。

4. 发明授权

US06663961B2 Process for preparation of polyester-based polymers 有权
公开(公告)号：US06663961B2
公开(公告)日：2003-12-16
申请号：US09883975
申请日：2001-06-19
申请人： Hyun Nam Cho , Sang Ho Bae , Il Seok Choi
发明人： Hyun Nam Cho , Sang Ho Bae , Il Seok Choi
IPC分类号： B32B1502
CPC分类号： C08G63/189 , C08G63/826 , C08G63/85 , Y10T428/2982
摘要： This invention is related to a process for preparing polyester polymers using a composite catalyst comprises the steps of 1) esterifying naphthalene dicarboxylic acid or a dicarboxylic acids containing NDCA or ester derivatives thereof, with ethylene glycol or glycols containing ethylene glycol or derivatives thereof to produce esterified compounds or its low molecular weight polymers; and then 2) continuously polycondensing the obtained esterification product to produce polyester polymers; and wherein the process includes using a composite polymerization catalyst which was prepared by reacting titanium compounds and cobalt compounds in the solution containing at least one alcohol. The process yields high quality polyester polymers having a good color and excellent physical properties. The process can considerably reduce both the esterification time and the polycondensation time.

5. 发明授权

US06423812B1 Process of preparing polycarbonates 有权
标题翻译：制备聚碳酸酯的方法
公开(公告)号：US06423812B1
公开(公告)日：2002-07-23
申请号：US09901727
申请日：2001-07-11
申请人： Young Chan Ko , Il Seok Choi , Cheol-Hyun Kim , Kwang Soo Yoon , Seung-Joo Kim , Kil-Yeong Choi , Jae Heung Lee , Kyong Soon Lee
发明人： Young Chan Ko , Il Seok Choi , Cheol-Hyun Kim , Kwang Soo Yoon , Seung-Joo Kim , Kil-Yeong Choi , Jae Heung Lee , Kyong Soon Lee
IPC分类号： C08G6400
CPC分类号： C08G64/307
摘要： The present invention relates to a process of preparing polycarbonates and more particularly, to the process of preparing polycarbonates through a melt polymerization reaction of dihydroxyaryl compounds with diarylcarbonate, wherein said melt polymerization is performed in the presence of a mixed catalyst composed of an oxygen (O) or sulfur (S) containing compound having lone-pair electrons and an alkali metal or alkaline earth metal salt in an appropriate ratio at a reduced temperature by accelerating a reaction rate to obtain high quality polycarbonates with higher than 15,000 g/mole of a viscosity average molecular weight and improved color.
摘要翻译：本发明涉及一种制备聚碳酸酯的方法，更具体地说，涉及通过二羟基芳基化合物与碳酸二芳基酯的熔融聚合反应制备聚碳酸酯的方法，其中所述熔融聚合在由氧（O ）或含硫（S）的化合物，具有单对电子的碱金属或碱土金属盐，碱金属或碱土金属盐在降低的温度下通过加速反应速率以适当的比例获得高质量的聚碳酸酯，其粘度高于15,000g / 平均分子量和颜色改善。

6. 发明授权

US6040417A Process for preparing polyethylene naphthalate based polymers 有权
标题翻译：制备聚萘二甲酸乙二醇酯基聚合物的方法
公开(公告)号：US6040417A
公开(公告)日：2000-03-21
申请号：US396490
申请日：1999-09-14
申请人： Hyun Nam Cho , Jae Min Hong , Young Chan Ko , Il Seok Choi , Young Jin Heo
发明人： Hyun Nam Cho , Jae Min Hong , Young Chan Ko , Il Seok Choi , Young Jin Heo
IPC分类号： C08F12/34 , C08G63/189 , C08G63/85 , C08G63/87 , C08G63/78 , C08G63/02
CPC分类号： C08G63/85 , C08G63/87 , C08G63/189
摘要： A process for preparing polyethylene naphthalate polymer by using a composite catalyst. The process comprises the steps of esterifying a dicarboxylic acid containing 2,6-NDCA, a dicarboxylic ester containing 2,6-NDC or derivatives thereof, with ethylene glycol or a glycol containing ethylene glycol to produce esterification polymers containing bis(beta-hydroxyethyl)naphthalate; continuously polycondensing the obtained esterification polymers to prepare a polymers of polyethylene naphthalate; and wherein the process includes using a composite polymerization catalyst, said composite polymerization catalyst comprising a titanium compound, a phosphorous compound and optionally an antimony compound. The process can considerably reduce both the esterification time and the polycondensation time and provides a good color and excellent physical characteristics.
摘要翻译：一种通过使用复合催化剂制备聚萘二甲酸乙二醇酯聚合物的方法。该方法包括以下步骤：将含有2,6-NDCA的二羧酸，含有2,6-NDC的二羧酸或其衍生物与乙二醇或含有乙二醇的二元醇酯化，得到含有双（β-羟乙基）萘二甲酸盐; 将所得酯化聚合物连续缩聚以制备聚萘二甲酸乙二醇酯的聚合物; 并且其中所述方法包括使用复合聚合催化剂，所述复合聚合催化剂包含钛化合物，磷化合物和任选的锑化合物。该方法可以显着降低酯化时间和缩聚时间，并提供良好的颜色和优异的物理特性。

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