Abstract:
The present invention relates to an optical film that includes a graft copolymer that includes two types or more of (meth)acryl based resins that have different glass transition temperatures, a retardation film, a method of producing the same, and a polarizing plate and a liquid crystal display device that include the optical film or the retardation film.
Abstract:
Disclosed is a method of producing a cyclic olefin polymer having a polar functional group, an olefin polymer produced by using the method, an optical anisotropic film including the olefin polymer, and a catalyst composition for producing the cyclic olefin polymer. In the olefin polymerization method and the catalyst composition for polymerization, since deactivation of the catalyst due to polar functional groups of monomers is capable of being suppressed, it is possible to produce polyolefins having a high molecular weight at high polymerization yield during polyolefin polymerization. Furthermore, the cyclic olefin having the polar functional groups has excellent polymerization reactivity and the activity of the catalyst composition including the same is maintained under a variable polymerization condition. Accordingly, the present invention is very useful for a mass-production process.
Abstract:
Disclosed is an optical film including a block copolymer which includes a) a vinyl polymeric block containing styrene or a derivative thereof; and at least one polymeric block of bl) an amorphous polyester polymeric block of a dicarboxylic acid or a derivative thereof and a diol compound, in which at least one of the dicarboxylic acid or the derivative thereof and the diol compound contains an aromatic group, and b2) a polycarbonate polymeric block, a retardation film using the optical film, processes of producing the optical and the retardation films, and a liquid crystal display including the film.
Abstract:
The present invention relates to an optical film comprising a block copolymer which comprises a block containing 50 mol% or more of (meth)acrylate, a production method thereof, and a liquid crystal display comprising the optical film. The optical film according to the present invention has excellent transparency and physical properties, and improved moisture absorption, as compared to a conventional acrylate film.
Abstract:
The present invention relates to an optical film that icomprises a block copolymer that comprises a vinyl polymer block containing styrene or a derivative thereof, and a poly- dimethylsiloxane block, a retardation film using the same, a method of manufacturing them, and a liquid crystal display comprising the films.
Abstract:
The present invention relates to a composition for forming a gate insulating layer of an organic thin film transistor comprising polyarylate, and an organic thin film transistor comprising a gate insulating layer, which is formed using the composition, in contact with an organic semi conductor channel.
Abstract:
Disclosed is a method of producing a cyclic olefin polymer having a polar functional group, an olefin polymer produced by using the method, an optical anisotropic film including the olefin polymer, and a catalyst composition for producing the cyclic olefin polymer. In the olefin polymerization method and the catalyst composition for polymerization, since deactivation of the catalyst due to polar functional groups of monomers is capable of being suppressed, it is possible to produce polyolefins having a high molecular weight at high polymerization yield during polyolefin polymerization. Furthermore, the cyclic olefin having the polar functional groups has excellent polymerization reactivity and the activity of the catalyst composition including the same is maintained under a variable polymerization condition. Accordingly, the present invention is very useful for a mass-production process.
Abstract:
Provided is a method of preparing a phosphonium compound by reacting a protic phosphonium compound represented by [(R1)-P(R2)a(R2)b]HX and a salt compound represented by [C] [Ani]. Therefore, a phosphonium compound used as a cocatalyst for the preparation of a polar cyclic olefin polymer can be produced at high yield.
Abstract:
The present invention relates to a novel fulvene compound and a preparation method thereof, and more particularly to a fulvene compound having substituted groups in the 2- and 5-positions, prepared from an unsaturated ketone having a substituted group in the β- position and a halogen atom in the α-position, and a preparation method thereof. The present invention also relates to a metallocene catalyst having a substituted group in the α-position carbon of the bridge of the cyclopentadienyl group only by reaction of a fulvene compound and an anion group including the cyclopentadienyl group, and a preparation method of a polyolefin copolymer using the same.
Abstract:
Provided is a method of preparing a cyclic olefin polymer by addition polymerization of a cyclic olefin monomer, the method including contacting a metal catalyst complex represented by Formula 1 below with a cyclic olefin monomer. [M(L1)x(Ll2)y(L3)z]a[Ani]b wherein M is a Group X metal; [M(Li)χ(L'2)y(L3)z] is a cationic complex; Li is an anionic hydrocarbyl-containing ligand; U2 is a neutral ligand; L3 is an N-heterocyclic carbene ligand; [Ani] is an anion capable of weakly coordinating with the metal M; x is 1 or 2; y is 0 to 4; z is 1 or 2;2≤x+y+z≤6; a and b are respectively the number of cations and the number of anions capable of weakly coordinating with the metal M and are each a number of 1-10 which is used to satisfy the net charge balance of the metal catalyst complex, and wherein for each of L1, L2, and L3, when a plurality of ligands are present in a molecule of the metal catalyst complex, the ligands may be the same or different. According to the method of the present invention, a high molecular weight cyclic olefin addition polymer can be produced in a high yield even when using a polar functional group-containing cyclic olefin monomer. A polymer produced using the method shows good thermal stability.
Abstract translation:提供通过环状烯烃单体的加成聚合制备环状烯烃聚合物的方法,该方法包括使由下述通式1表示的金属催化剂络合物与环状烯烃单体接触。 [式1] [M(L1)x(Ll2)y(L3)z] a [Ani] b其中M是第X族金属; [M(Li)2(L'2)y(L3)z]是阳离子络合物; Li是含阴离子烃基的配体; U2是中性配体; L3是N-杂环卡宾配体; [Ani]是能够与金属M弱配位的阴离子; x为1或2; y为0〜4; z为1或2; 2 = x + y + z = 6; a和b分别是能够与金属M弱配位的阳离子数和阴离子数,并且各自为1-10,其用于满足金属催化剂络合物的净电荷平衡,并且其中对于每个 的L1,L2和L3,当多个配体存在于金属催化剂络合物的分子中时,配体可以相同或不同。 根据本发明的方法,即使使用含极性官能团的环状烯烃单体,也可以高产率地制造高分子量环状烯烃加成聚合物。 使用该方法制备的聚合物显示出良好的热稳定性。