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。
摘要:
Provided is a messaging service system and method for adding a contact through a grouping operation. The messaging service system includes a member registering unit configured to create a group, and to register a first member designated by a user as a first participant of the group; and a member managing unit configured to disclose the group to the first participant of the group, to assign, to the first participant, a permission to add a second participant to the group, in which, the member registering unit is configured to add a second member designated by the first participant of the group as the second participant of the group, and the member managing unit is configured to display a list of members registered by the member registering unit and a list of groups created by the member registering unit.
摘要:
Provided is a system for providing social network service (SNS) and a method for setting relationship between users of mobile terminals. The system may include a reception unit to receive location information on a user terminal allowing the location information to be shared in response to a friend request from the user terminal, a user terminal identification unit to identify at least one other user terminal present within a preset distance based on the location information on the user terminal and allows location information to be shared, a user information transmission unit to identify and send user information on the other user terminal to the user terminal, and a relationship setting unit to set a relationship between users of the user terminal and the other user terminal when the user information on the other user terminal is selected in the user terminal.
摘要:
A mobile terminal including a wireless communication unit configured to wirelessly communicate with at least one other terminal; a display unit configured to display at least a 2D (two-dimensional) object and a 3D (three-dimensional) object; and a controller configured to control the display unit to display the 2D object and the 3D object in an overlapping manner, and to change a display characteristic of at least one of the overlapping 2D object and the 3D object.
摘要:
Provided is a metal catalyst complex for preparing a cyclic olefin-based polymer by addition polymerization of a cyclic olefin-based monomer, which is represented by Formula 1 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 precatalyst; 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 each 1 to 10. The metal catalyst complex has an N-heterocyclic carbene ligand, and thus, is excellent in thermal stability and reactivity.
摘要翻译:本发明提供一种金属催化剂配合物,其通过以下式1表示的环状烯烃系单体的加成聚合制备环状烯烃系聚合物:[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]是阳离子预催化剂; 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各自为1〜10。金属催化剂配合物具有N-杂环卡宾配体,因此具有优异的热稳定性和反应性。
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 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.