公开(公告)号：KR1020040050166A

公开(公告)日：2004-06-16

申请号：KR1020020077802

申请日：2002-12-09

Applicant: 한국화학연구원

Inventor： 이미혜 ,  최길영 ,  원종찬 ,  김용운 ,  박동원 ,  오재민 ,  이범진

IPC: C08G73/10

Abstract: PURPOSE: A polyamic acid derivative having an imide ring-containing side chain for a liquid crystal alignment layer and a monomer for the preparation of the polyamic acid derivative are provided, to improve heat resistance, surface strength, transparency and vertical alignment of liquid crystal. CONSTITUTION: The polyamic acid derivative is represented by the formula 1, wherein n is an integer of 1-300 and m is an integer of 1-30. Preferably the polyamic acid derivative has an intrinsic viscosity of 0.3-1.5 dL/g, a molecular weight of 10,000-150,000 g/mol, a glass transition temperature of 230-400 deg.C and a pretilt angle of 85-89.9 degree, is soluble in a solvent selected from the group consisting of dimethyl acetamide, dimethyl formamide, N-methyl-2-pyrrolidone, tetrahydrofuran, chloroform, acetone, ethyl acetate and γ -butyrolactone, and has an imidation temperature of 200-300 deg.C. The monomer is represented by the formula 2, wherein m is an integer of 1-30.

Abstract translation: 目的：提供具有用于液晶取向层的含酰亚胺环的侧链和制备聚酰胺酸衍生物的单体的聚酰胺酸衍生物，以提高液晶的耐热性，表面强度，透明性和垂直取向。 构成：聚酰胺酸衍生物由式1表示，其中n为1-300的整数，m为1-30的整数。 优选聚酰胺酸衍生物的特性粘度为0.3-1.5dL / g，分子量为10,000-150,000g / mol，玻璃化转变温度为230-400℃，预倾角为85-89.9度，为 溶于选自二甲基乙酰胺，二甲基甲酰胺，N-甲基-2-吡咯烷酮，四氢呋喃，氯仿，丙酮，乙酸乙酯，γ-丁内酯的溶剂中，酰亚胺化温度为200〜300℃。 单体由式2表示，其中m为1-30的整数。

公开(公告)号：KR1020030027250A

公开(公告)日：2003-04-07

申请号：KR1020010060354

申请日：2001-09-28

Applicant: 한국화학연구원

Inventor： 이미혜 ,  최길영 ,  원종찬 ,  김용운 ,  김효주 ,  유효진 ,  박동원 ,  오재민 ,  이범진

IPC: C08G73/10

Abstract: PURPOSE: A polyamic acid derivative having an aliphatic ring-based side chain for a liquid crystal alignment layer is provided, to improve the heat resistance, the surface strength characteristic, the transparency, the pretilt angle of liquid crystal and the solubility of the polyamic acid derivative. CONSTITUTION: The polyamic acid derivative is represented by the formula 1, wherein n is an integer of 1-300. Preferably the polyamic acid derivative has an intrinsic viscosity of 0.3-1.5 dL/g, a molecular weight of 10,000-150,000, a glass transition temperature of 230-400 deg.C, a pretilt angle of 4-89.5 degree, and an imidization temperature of 200-300 deg.C. The polyamic acid derivative is soluble in dimethylacetamide, dimethylformamide, N-methyl-2-pyrrolidone, tetrahydrofuran, chloroform, acetone, ethyl acetate or γ-butyrolactone.

Abstract translation: 目的：提供具有用于液晶取向层的脂族环状侧链的聚酰胺酸衍生物，以提高耐热性，表面强度特性，透明度，液晶预倾角和聚酰胺酸的溶解度 衍生物。 构成：聚酰胺酸衍生物由式1表示，其中n为1-300的整数。 优选聚酰胺酸衍生物的特性粘度为0.3-1.5dL / g，分子量为10,000-150,000，玻璃化转变温度为230-400℃，预倾角为4-89.5度，酰亚胺化温度 200-300摄氏度 聚酰胺酸衍生物可溶于二甲基乙酰胺，二甲基甲酰胺，N-甲基-2-吡咯烷酮，四氢呋喃，氯仿，丙酮，乙酸乙酯或γ-丁内酯。

公开(公告)号：KR100336974B1

公开(公告)日：2002-05-17

申请号：KR1019990024451

申请日：1999-06-26

Applicant: 한국화학연구원

Inventor： 최길영 ,  이미혜 ,  이범진 ,  임대우

IPC: C08J7/04

Abstract: 본발명은내열성이개선된폴리에스테르복합필름과이의제조방법에관한것으로서, 더욱상세하게로는다음화학식 1을반복단위로하는방향족폴리에스테르필름표면에다음화학식 2로표시되는가용성폴리이미드수지용액이박막코팅되어있어내열성, 투명성및 우수한기계적특성을가지는폴리에스테르복합필름과이의제조방법에관한것이다.

公开(公告)号：KR1020010003919A

公开(公告)日：2001-01-15

申请号：KR1019990024451

申请日：1999-06-26

Applicant: 한국화학연구원

Inventor： 최길영 ,  이미혜 ,  이범진 ,  임대우

IPC: C08J7/04

Abstract: PURPOSE: A polyester composite film having improved heat resistance, transparency and mechanical characteristics by preparing novel aliphatic ring-based soluble polyimide resin having excellent processability and introducing the same into a coated layer for improving heat resistance of a polyester film and process for the production thereof are provided which can be used for heat resistant core materials of the high-technology industry such as various electric, electronic, space and aviation. CONSTITUTION: The composite film is characterized in that soluble polyimide resin of formula 2 is coated on one surface or both surfaces of a polyester film having a repeating unit of formula 1 with a thickness of 1 to 20 micrometer, wherein the soluble polyimide resin and polyester film have an intrinsic viscosity of 0.5 to 2.0 dl/g and 0.3 to 1.0 dl/g each. The subject polyester composite film having a light transmittance of 80% or more in a range of 400 to 700nm and a surface adhesive strength of 10 to 1,000 kg/cm is obtained by heating the composite film precursor at 160 to 180 deg.C for 1 to 12 hr

Abstract translation: 目的：通过制备具有优异加工性能的新型脂族环类可溶性聚酰亚胺树脂并将其引入用于改善聚酯膜耐热性的涂层中的耐热性，透明性和机械特性提高的聚酯复合膜及其制备方法 提供可用于各种电气，电子，空间和航空等高科技行业的耐热芯材料。 构成：复合膜的特征在于，将式2的可溶性聚酰亚胺树脂涂覆在具有1至20微米厚度的具有式1重复单元的聚酯膜的一个表面或两个表面上，其中可溶性聚酰亚胺树脂和聚酯 膜的特性粘度分别为0.5〜2.0dl / g，0.3〜1.0dl / g。 通过将复合膜前体在160〜180℃下加热1分钟，得到400〜700nm范围内的透光率为80％以上，表面粘合强度为10〜1000kg / cm的目标聚酯复合膜， 至12小时