摘要:
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 semiconductor channel.
摘要:
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.
摘要:
Provided are a bridged metallocene compound particularly suitable for copolymerization of ethylene and alpha-olefin or cyclic olefin, a process of preparing the metallocene compound, and a process of preparing polyolefin using the metallocene compound. The bridged metallocene compound has low steric hindrance and good (co)polymerization activity, and thus, exhibits good activity in copolymerization of ethylene and alpha-olefin such as 1-hexene or 1-octene. Furthermore, the process of preparing the bridged metallocene compound is simplified, and thus, suitable for mass production.
摘要:
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 semiconductor channel.
摘要:
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.
摘要:
There are provided a method of simply preparing a 1,4,6-substituted, 1,4-substituted, 1,6-substituted, or 1-substituted fulvene compound, the intermediates of the fulvene compound, and a method of preparing an ansa-metallocene compound in which two cyclopentadienyl ligands are bridged by one carbon and there are substituents only at positions adjacent to the bridging point of a cyclopentadienyl ligand, using the fulvene compound.
摘要:
A catalyst system capable of producing a cyclic olefin polymer having a polar functional group and a high molecular weight with a high yield in which a catalyst is not deactivated due to polar functional groups of monomers, and a method of producing polymers using the same are provided. The catalyst system for polymerization of olefin according to the present invention has good thermal and chemical stability, and thus, in the method of preparing polyolefin using the catalyst system, the deactivation of a catalyst due to a polar functional group of the monomer can be prevented, and thus a high yield of the cyclic olefin polymer with a high molecular weight can be obtained when a ratio of the catalyst to the monomer is 1:5000, and the removal of a catalyst residue is not required.
摘要:
A method of producing a cyclic olefin polymer having a polar functional group and a high molecular weight with a high yield in which a catalyst is not deactivated due to polar functional groups, moisture and oxygen is provided. According to the olefin polymerization method, deactivation of a catalyst due to polar functional groups of monomers can be prevented, and thus a polyolefin having a high molecular weight can be prepared with a high yield, and the ratio of catalyst to monomer can be less than 1/5000 due to good activity of the catalyst, and thus removal of catalyst residues is not required.
摘要:
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.
摘要:
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 represented by Formula 2 below: [M(L1)x(L′2)y(L3)z]a[Ani]b wherein M is a Group X metal; [M(L1)x(L′2)y(L3)z] is a cationic complex; L1 is an anionic hydrocarbyl-containing ligand; L′2 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, L′2, 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, and wherein m is an integer of 0 to 4; and R7, R′7, R″7, and R″′7 are each independently a polar functional group or a nonpolar functional group.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.
摘要翻译:提供一种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表示的金属催化剂配合物与由下式2表示的环状烯烃单体接触:[M(L1)x( L'2)y(L3)z] a [Ani] b式1其中M是X族金属; [M(L1)x(L'2)y(L3)z]是阳离子络合物; L1是含阴离子烃基的配体; L'2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L 1,L 2和L 3,当多个配体存在于金属催化剂配合物的分子中时,配体可以相同或不同,并且其中m为0-4的整数; 并且R 7,R'7,R“7和R”'7各自独立地为极性官能团或非极性官能团。 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。