摘要:
The present invention relates to a norbornene polymer that comprises a norbornene monomer having a photoreactive functional group, and a method of manufacturing the same. The norbornene polymer comprises at least 50 mol % of exo isomers among the norbornene monomers having the photoreactive functional group. Since the norbornene polymer according to the present invention comprises at least 50 mol % of exo isomers among the norbornene monomers having the photoreactive functional group, a molecular weight is significantly increased while the yield is not reduced during the manufacturing of the polymer. In views of the three dimensional structure, stability is ensured because the polymer has a planar structure in which the photoreactive groups between the molecules are close to each other. Therefore, the distance between the photoreactive groups is reduced, thus increasing the photoreaction rate.
摘要:
The present invention relates to a norbornene polymer that comprises a norbornene monomer having a photoreactive functional group, and a method of manufacturing the same. The norbornene polymer comprises at least 50 mol % of exo isomers among the norbornene monomers having the photoreactive functional group. Since the norbornene polymer according to the present invention comprises at least 50 mol % of exo isomers among the norbornene monomers having the photoreactive functional group, a molecular weight is significantly increased while the yield is not reduced during the manufacturing of the polymer. In views of the three dimensional structure, stability is ensured because the polymer has a planar structure in which the photoreactive groups between the molecules are close to each other. Therefore, the distance between the photoreactive groups is reduced, thus increasing the photoreaction rate.
摘要:
Disclosed is a mirror unit for a vehicle, which includes a mirror case (10) having a receiving space formed therein; a pivoting bracket (20) axially coupled to an inside of the mirror case (10); a first operating unit (30) installed to a predetermined position in the mirror case (10) to rotate the pivoting bracket (20) as much as 180 degrees by one touch; and front and rear mirrors (40)(45) systematically attached and detached freely to/from both sides of the pivoting bracket (20).
摘要:
A lithium secondary battery includes a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, a separator separating the positive electrode from the negative electrode, and an electrolyte. The negative electrode active material includes a graphite core particle, at least one metal particle located on the graphite core particle, and a polymer film coating the graphite core particle and the at least one metal particle. The polymer includes a polyimide- or polyacrylate-based polymer.
摘要:
Disclosed is a mirror unit for a vehicle, which includes a mirror case (10) having a receiving space formed therein; a pivoting bracket (20) axially coupled to an inside of the mirror case (10); a first operating unit (30) installed to a predetermined position in the mirror case (10) to rotate the pivoting bracket (20) as much as 180 degrees by one touch; and front and rear mirrors (40)(45) systematically attached and detached freely to/from both sides of the pivoting bracket (20).
摘要:
A lithium secondary battery includes a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, a separator separating the positive electrode from the negative electrode, and an electrolyte. The negative electrode active material includes a graphite core particle, at least one metal particle located on the graphite core particle, and a polymer film coating the graphite core particle and the at least one metal particle. The polymer includes a polyimide- or polyacrylate-based polymer.
摘要:
A door structure of a vehicle wherein installment inside the door of a pushing member contacting an outer panel at a position facing a side of an upper body of a passenger causes the passenger to be pushed beforehand inside the vehicle by an initial weak shock during a side collision of the vehicle and the strong shock of last stage not to be directly transmitted to the passenger, remarkably decreasing the injury of the passenger, the pushing member comprising: a main body unit; a bent side wall unit extended from a periphery of the main body unit to form a predetermined space; and a flange unit extended to the side wall unit, bent outwardly and directly contacting an inner side surface of the outer panel.