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公开(公告)号：KR100420786B1
公开(公告)日：2004-03-02
申请号：KR1020010012152
申请日：2001-03-09
Applicant: 한국과학기술원
IPC: C08F283/04
CPC classification number: C08G73/10 , G02F1/133723 , G02F1/133788 , Y10T428/10 , Y10T428/1005 , Y10T428/1023 , Y10T428/31721
Abstract: The present invention provides a polymer in which coumarin, a photo-reactive molecule, is grafted onto a polyimide for preparing liquid crystal alignment layer which has a superior alignment property and an excellent thermal stability in photo-alignment, a process for preparing the said grafted polymer, a process for preparing liquid crystal alignment layer by employing the said grafted polymer, and a liquid crystal alignment layer prepared by the process. The polymer of the invention is prepared by mixing a coumarin compound with a polyimide, dissolving the mixture in an organic solvent, adding a catalyst, and stirring under an environment of N2 gas. The polymer of the invention is superior in terms of the thermal stability, which makes possible its universal application for the development of a novel liquid crystal display(LCD).
Abstract translation: 本发明提供一种聚合物，其中将光敏反应性分子香豆素接枝到聚酰亚胺上以制备具有优异取向性和光取向优异热稳定性的液晶取向层，制备所述接枝 聚合物，通过使用所述接枝聚合物制备液晶取向层的方法，以及通过该方法制备的液晶取向层。 本发明的聚合物通过将香豆素化合物与聚酰亚胺混合，将该混合物溶解在有机溶剂中，加入催化剂，并在N 2气的环境下搅拌来制备。 本发明的聚合物在热稳定性方面优越，这使其可用于开发新型液晶显示器（LCD）的通用应用。
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公开(公告)号：KR1020030047413A
公开(公告)日：2003-06-18
申请号：KR1020010077893
申请日：2001-12-10
Applicant: 한국과학기술원
IPC: A61K47/30
CPC classification number: A61K9/0024 , A61K38/00 , A61K47/10 , A61K47/34
Abstract: PURPOSE: An in situ implant composition is provided with a biodegradable polymer containing polyethylene glycol to prevent denaturation of the protein substance within the polymer matrix by forming the movement passage of carboxylic acid, and to control the structure and material property of the polymer by introducing polyethylene glycol. CONSTITUTION: An in situ implant composition contains a biodegradable polymer containing a copolymer of polyethylene glycol and aliphatic polyester, a solvent for dissolving the biodegradable polymer, and a medicament uniformly diffused in the solvent to mediate the biodegradable polymer. The aliphatic polyester polymer is selected from lactic acid, glycolic acid, caprolactone, dioxanone, or trimethyl carbonate. The copolymer is a graft or block copolymer.
Abstract translation: 目的：原位植入组合物提供含有聚乙二醇的可生物降解的聚合物，以通过形成羧酸的移动通道来防止聚合物基质内的蛋白质物质变性，并通过引入聚乙烯来控制聚合物的结构和材料性能 乙二醇。 构成：原位植入物组合物包含含有聚乙二醇和脂肪族聚酯的共聚物的可生物降解的聚合物，用于溶解可生物降解的聚合物的溶剂，以及均匀地扩散到溶剂中以介导可生物降解的聚合物的药物。 脂族聚酯聚合物选自乳酸，乙醇酸，己内酯，二恶烷酮或碳酸三甲酯。 共聚物是接枝或嵌段共聚物。
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公开(公告)号：KR1020020001898A
公开(公告)日：2002-01-09
申请号：KR1020000016260
申请日：2000-03-29
Applicant: 한국과학기술원
IPC: C08G73/10
CPC classification number: G02F1/133723 , C08L79/08 , C09D131/06 , G02F1/133788 , Y10T428/1005 , C08L31/00 , C08L2666/14
Abstract: PURPOSE: A liquid crystal alignment layer and its preparation method are provided, to improve the heat stability and the alignment property and to increase line slope angle by using a cinnamate-based polymer and a polyimide-based polymer. CONSTITUTION: The method comprises the steps of mixing one compound, a mixture or copolymer selected from the group consisting of 10-90 wt% of poly(vinyl cinnamate) of C1-C20, poly(vinyl fluorocinnamate), and poly(vinyl alkoxyfluorocinnamate of C1-C20, and a mixture of polyimide-based polymers selected from the group consisting of 90-10 wt% of poly(pyromellitic dianhydride-4,4'-oxydiamine), poly(pyromellitic dianhydride-2,2-bis£4-(4-aminophenoxy)phenyl|-hexafluoropropane), poly(pyromellitic dianhydride-2,2-bis(4-aminophenoxyphenyl)propane), poly(1,2,3,4-cyclobutanetetracarboxylic acid-4,4'-oxydiamine), poly(1,2,3,4-cyclobutanetetracarboxylic acid-2,2-bis£4-(4-aminophenoxy)phenyl|-hexafluoropropane), poly(1,2,3,4-cyclobutanetetracarboxylic acid-2,2-bis(4-aminophenoxyphenyl)propane), poly(2,2-bis(3,4-dicarboxylphenyl)hexafluoropropane dianhydride-4,4'-oxydiamine), poly(2,2-bis(3,4-dicarboxylphenyl)hexafluoropropane dianhydride-2,2-bis£4-(4-aminophenoxy)phenyl|-hexafluoropropane), poly(2,2-bis(3,4-dicarboxylphenyl)hexafluoropropane dianhydride-2,2-bis(4-aminophenoxyphenyl)propane), and copolymers prepared by using monomers used to prepare the polyimide-based polymers, and dissolving the mixture in an organic solvent; spin coating the polymer dissolved in an organic solvent; heating the coated polymer to obtain an alignment layer; and radiating a UV ray to the alignment layer. Preferably the spin coating is carried out by 1,000-3,000 rpm for 10 sec to 10 min, and the heating is carried out at a temperature of 100-300 deg.C for 10-300 min.
Abstract translation: 目的：提供一种液晶取向层及其制备方法，通过使用肉桂酸酯类聚合物和聚酰亚胺类聚合物，提高热稳定性和取向性，并提高线斜角。 方法：该方法包括以下步骤：混合一种化合物，选自10-90wt％的C 1 -C 20的聚（乙烯基肉桂酸酯），聚（乙烯基氟代肉桂酸酯）和聚（乙烯基氟代肉桂酸乙烯酯）的聚（乙烯基烷氧基氟肉桂酸酯） C1-C20和聚酰亚胺基聚合物的混合物，其选自90-10重量％的聚（均苯四酸二酐-4,4'-氧二胺），聚（1,2,4,5-苯四酸二酐-2,2-双 （4-氨基苯氧基）苯基| - 六氟丙烷），聚（1,2,4,5-苯四酸二酐-2,2-双（4-氨基苯氧基苯基）丙烷），聚（1,2,3,4-环丁烷四羧酸-4,4'-氧二胺） 聚（1,2,3,4-环丁烷四羧酸-2,2-双-4-（4-氨基苯氧基）苯基 - 六氟丙烷），聚（1,2,3,4-环丁烷四羧酸-2,2-二 （4-氨基苯氧基苯基）丙烷），聚（2,2-双（3,4-二羧基苯基）六氟丙烷二酐-4,4'-氧二胺），聚（2,2-双（3,4-二羧基苯基）六氟丙烷二酐 - 2,2-双（4-氨基苯氧基）苯基| - 六氟丙烷），聚 （2,2-二（3,4-二羧基苯基）六氟丙烷二酐-2,2-双（4-氨基苯氧基苯基）丙烷）和通过使用用于制备聚酰亚胺基聚合物的单体制备的共聚物，并将该混合物溶解在 有机溶剂; 旋转涂覆溶解在有机溶剂中的聚合物; 加热涂布的聚合物以获得取向层; 并向对准层辐射紫外线。 优选旋转涂层通过1000-3,000rpm进行10秒至10分钟，并且在100-300℃的温度下加热10-300分钟。
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公开(公告)号：KR100569880B1
公开(公告)日：2006-04-11
申请号：KR1020030065269
申请日：2003-09-19
Applicant: 한국과학기술원
IPC: C08G63/06
CPC classification number: C08G65/26 , C08F290/062 , C08F290/064 , C08F299/02 , C08G63/664 , C08G63/912 , C08L71/02 , C08L2666/18
Abstract: 본 발명은 폴리에틸렌글리콜이 그라프트된 하기 구조식 1의 지방족폴리에스테르 및 그 제조방법을 제공한다.
상기에서, X는 지방족 에스테르 반복단위; R은 수소 또는 C
1 ∼C
5 인 알킬기; Z는 개시제 또는 연쇄이동제 부위; m/l은 0.1∼50, n은 2∼50의 양수, x는 양수로서 사용자의 필요에 따라 정해지며, y는 1∼200의 양수이다.-
公开(公告)号：KR100449893B1
公开(公告)日：2004-09-22
申请号：KR1020010077893
申请日：2001-12-10
Applicant: 한국과학기술원
IPC: A61K47/30
Abstract: PURPOSE: An in situ implant composition is provided with a biodegradable polymer containing polyethylene glycol to prevent denaturation of the protein substance within the polymer matrix by forming the movement passage of carboxylic acid, and to control the structure and material property of the polymer by introducing polyethylene glycol. CONSTITUTION: An in situ implant composition contains a biodegradable polymer containing a copolymer of polyethylene glycol and aliphatic polyester, a solvent for dissolving the biodegradable polymer, and a medicament uniformly diffused in the solvent to mediate the biodegradable polymer. The aliphatic polyester polymer is selected from lactic acid, glycolic acid, caprolactone, dioxanone, or trimethyl carbonate. The copolymer is a graft or block copolymer.
Abstract translation: 目的：原位植入物组合物配备有含聚乙二醇的生物可降解聚合物，以通过形成羧酸的移动通道来防止聚合物基质内蛋白质物质的变性，并通过引入聚乙烯来控制聚合物的结构和材料性质 乙二醇。 组成：原位植入物组合物含有含有聚乙二醇和脂肪族聚酯的共聚物的可生物降解聚合物，溶解可生物降解聚合物的溶剂，以及均匀分散在溶剂中介导生物可降解聚合物的药物。 脂族聚酯聚合物选自乳酸，乙醇酸，己内酯，二恶烷酮或碳酸三甲酯。 该共聚物是接枝或嵌段共聚物。
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Patent Agency Ranking
公开(公告)号：KR1020050028745A
公开(公告)日：2005-03-23
申请号：KR1020030065269
申请日：2003-09-19
Applicant: 한국과학기술원
IPC: C08G63/06
CPC classification number: C08G65/26 , C08F290/062 , C08F290/064 , C08F299/02 , C08G63/664 , C08G63/912 , C08L71/02 , C08L2666/18
Abstract: Provided are an aliphatic polyester grafted with polyethylene glycol having a functional group which is biodegradable and whose content of the polyethylene glycol can be controlled easily, and its preparation method. The aliphatic polyester is represented by the formula 1, wherein X is an aliphatic ester repeating unit; R is H or a C1-C5 alkyl group; Z is the moiety of an initiator or a chain transfer agent; m/l is 0.1-50; n is an integer of 2-50; x is a positive integer; and y is an integer of 1-200. Preferably X is any one selected from the group consisting of lactide, glycolide, caprolactone, beta-propiolactone, gamma-butyrolactone and p-dioxanone. The method comprises the steps of ring opening polymerizing an aliphatic ester cyclic compound and an epoxy-based monomer having a double bond at an alkyl chain terminal; and radical polymerizing the polyethylene glycol where a certain polymerizable functional group is introduced with the obtained compound.
Abstract translation: 提供了具有可生物降解的官能团的聚乙二醇接枝的脂肪族聚酯，其容易控制聚乙二醇的含量及其制备方法。 脂肪族聚酯由式1表示，其中X为脂肪族酯重复单元; R为H或C 1 -C 5烷基; Z是引发剂或链转移剂的部分; m / l为0.1-50; n为2-50的整数; x是正整数; y为1-200的整数。 优选X是选自丙交酯，乙交酯，己内酯，β-丙内酯，γ-丁内酯和对二恶烷酮中的任何一种。 该方法包括在烷基链末端开环聚合脂族酯环状化合物和具有双键的环氧基单体的步骤; 并且将所获得的化合物引入某一聚合性官能团的聚乙二醇进行自由基聚合。
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公开(公告)号：KR1020020030734A
公开(公告)日：2002-04-25
申请号：KR1020017005362
申请日：2001-03-28
Applicant: 한국과학기술원
IPC: C08G73/10
CPC classification number: G02F1/133723 , C08L79/08 , C09D131/06 , G02F1/133788 , Y10T428/1005 , C08L31/00 , C08L2666/14
Abstract: PURPOSE: Provided are a polymer blend of cinnamate polymer and polyimide polymer, which are photo-reactive polymers, for preparing liquid crystal alignment layer having a high pretilt angle in photo-alignment, a process for preparing liquid crystal alignment layer by employing the blend, a liquid crystal alignment layer prepared by the process, and a crystal cell prepared by employing the liquid crystal alignment layer. The liquid crystal alignment layer prepared by employing the polymer blend has an excellent alignment property and thermal stability, thereby making possible its wide application in the development of liquid crystal displays. CONSTITUTION: The polymer blend for preparing liquid crystal alignment layer, comprises 10 to 90% (w/w) of cinnamate polymer and 10 to 90% (w/w) of polyimide polymer. The process for preparing liquid crystal alignment layer, comprises the steps of: (i) mixing cinnamate polymer and polyimide polymer in a ratio of 1: 9 to 9: 1 (w/w), and dissolving the mixed polymers in an organic solvent; (ii) spin coating the dissolved polymers onto a glass plate; (iii) heating the polymers to obtain an alignment layer; and (iv) irradiating ultraviolet ray to the alignment layer to align liquid crystals in preferred direction.
Abstract translation: 目的：提供作为光反应性聚合物的肉桂酸酯聚合物和聚酰亚胺聚合物的聚合物共混物，用于制备光取向具有高预倾角的液晶取向层，通过使用该共混物制备液晶取向层的方法， 通过该方法制备的液晶取向层和通过使用液晶取向层制备的晶体单元。 通过使用聚合物共混物制备的液晶取向层具有优异的取向性和热稳定性，从而可以广泛应用于液晶显示器的开发。 构成：用于制备液晶取向层的聚合物共混物包含10至90％（w / w）的肉桂酸酯聚合物和10至90％（w / w）的聚酰亚胺聚合物。 制备液晶取向层的方法包括以下步骤：（i）以1：9至9：1（w / w）的比例混合肉桂酸酯聚合物和聚酰亚胺聚合物，并将混合聚合物溶解在有机溶剂中; （ii）将溶解的聚合物旋涂到玻璃板上; （iii）加热聚合物以获得取向层; 和（iv）向取向层照射紫外线以使液晶在优选的方向取向。
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公开(公告)号：KR100746331B1
公开(公告)日：2007-08-03
申请号：KR1020050036848
申请日：2005-05-02
Applicant: 한국과학기술원
IPC: G02F1/1337
Abstract: 본 발명은 액정 광배향막 및 이의 제조방법에 관한 것으로서 보다 상세하게는 액정 광배향막 제조에 있어서, 광반응성 고분자를 가소제와 반응시킴으로써 광반응성 고분자의 유연성을 유도하고 자외선 조사와 열처리에 의해 액정 배향의 열적 안정성을 향상시킬 수 있는 액정 광배향막의 제조방법과 동 방법에 의해 제조한 액정 배향막에 관한 것이다.
본 발명은 액정 광배향막의 제조에 있어서,
광반응성 고분자와 광반응성 중량 대비 50∼500％의 가소제를 유기용매에 용해시키는 단계,
유기용매에 용해된 광반응성 고분자와 가소제의 혼합물을 유리판 위에 코팅하는 단계,
기판을 열처리하여 막을 얻는 단계,
수득한 막에 자외선을 조사하여 단계를 포함하는 액정 광배향막의 제조방법을 나타낸다.-
公开(公告)号：KR1020060114580A
公开(公告)日：2006-11-07
申请号：KR1020050036848
申请日：2005-05-02
Applicant: 한국과학기술원
IPC: G02F1/1337
CPC classification number: G02F1/133711 , C09K19/56 , G02F1/133723 , G02F1/133788
Abstract: A liquid crystal alignment layer and a method for manufacturing the same are provided to induce the flexibility of a photo-reactive polymer, by reacting the photo-reactive polymer with a plasticizer. For forming a liquid crystal alignment layer, a photo-reactive polymer and a plasticizer are dissolved in an organic solvent. The plasticizer has a weight of 50 to 500 percents in comparison with the photo-reactive polymer. The mixture of the photo-reactive polymer and the plasticizer is coated on a glass substrate. The glass substrate having the coated mixture is thermally heated to obtain the liquid crystal alignment layer. An ultraviolet light is applies onto the obtained liquid crystal alignment layer.
Abstract translation: 提供液晶取向层及其制造方法，通过使光反应性聚合物与增塑剂反应来诱导光反应性聚合物的柔性。 为了形成液晶取向层，将光反应性聚合物和增塑剂溶解在有机溶剂中。 与光反应性聚合物相比，增塑剂的重量为50-500％。 将光反应性聚合物和增塑剂的混合物涂覆在玻璃基板上。 将具有涂布混合物的玻璃基板热加热，得到液晶取向层。 对获得的液晶取向层施加紫外线。
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公开(公告)号：KR1020020072342A
公开(公告)日：2002-09-14
申请号：KR1020010012152
申请日：2001-03-09
Applicant: 한국과학기술원
IPC: C08F283/04
CPC classification number: C08G73/10 , G02F1/133723 , G02F1/133788 , Y10T428/10 , Y10T428/1005 , Y10T428/1023 , Y10T428/31721
Abstract: PURPOSE: A polymer for the preparation of a liquid crystal alignment layer, its preparation method, a liquid crystal alignment layer prepared by using the polymer and its preparation method are provided, to improve the aligning property in optical alignment and the heat stability of a liquid crystal alignment layer. CONSTITUTION: The polymer is prepared by mixing a coumarin-based compound and a polyimide-based polymer in the ratio of 0.3:2 to 1:2 by weight; dissolving the mixture in an organic solvent; adding a catalyst to the solution; and stirring the solution under the saturated nitrogen condition at 50-70 deg.C for 3-5 hours. Preferably the coumarin-based compound is selected from the group consisting of 7-hydroxycoumarin, 7-(2-hydroxyethoxy)coumarin, 7-(6-hydroxyhexyloxy)coumarin, the compound represented by the formula I and their mixtures, wherein m is an integer of 0-3; and n is an integer of 0-10. Preferably the organic solvent is dimethyl sulfoxide and the catalyst is thionyl chloride. The liquid crystal alignment layer is prepared by dissolving the polymer in an organic solvent comprising N-methyl-2-pyrrolidone, spin-coating it on glass and evaporating the solvent.
Abstract translation: 目的：提供一种用于制备液晶取向层的聚合物，其制备方法，使用该聚合物制备的液晶取向层及其制备方法，以提高液晶取向膜的取向性和液晶的热稳定性 晶体取向层。 构成：通过以基于重量比为0.3:2至1:2的比例混合基于香豆素的化合物和基于聚酰亚胺的聚合物制备聚合物; 将混合物溶解在有机溶剂中; 向溶液中加入催化剂; 并在饱和氮气条件下在50-70℃下搅拌溶液3-5小时。 优选基于香豆素的化合物选自7-羟基香豆素，7-（2-羟基乙氧基）香豆素，7-（6-羟基己氧基）香豆素，由式I表示的化合物及其混合物，其中m为 0-3的整数; n为0〜10的整数。 优选地，有机溶剂是二甲基亚砜，催化剂是亚硫酰氯。 通过将聚合物溶解在包含N-甲基-2-吡咯烷酮的有机溶剂中，将其旋涂在玻璃上并蒸发溶剂来制备液晶取向层。
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