Abstract: The present invention discloses a transition metal compound including a heteroatom and having a novel structure, a catalyst composition including the same, and a preparation method of a polymer using the catalyst composition. The transition metal compound according to an embodiment of the present invention may be used as a catalyst having good copolymerization properties, and a polymer having a high molecular weight at a low density region may be prepared.

Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a high molecular weight and low density olefin-based polymer, and a catalyst composition including the same.

Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a low density olefin-based polymer, and a catalyst composition including the same.

Abstract: The present invention relates to a novel ligand compound, a transition metal compound, and a catalytic composition including the same. The novel ligand compound and the transition metal compound of the present invention are useful as a polymerization reaction catalyst in preparing an olefin-based polymer having low density. In addition, an olefin polymer polymerized using a catalytic composition including the transition metal compound is capable of being prepared to a high molecular weight product having a low melt index (MI).

Abstract: This disclosure relates to a catalyst composition that can prepare polyolefin having high molecular weight, a method for preparing the same, and a method for preparing polyolefin using the same. The dinuclear metallocene compound included in the catalyst composition according to the present invention is a dinuclear metallocene compound with a new structure, and, unlike a single-site catalyst, has high accessibility to a substrate, and thus, can provide a multi-site catalyst with high activity.

Abstract: The present invention relates to a polyolefin having a molecular weight distribution of 1.5 to 3.0 and having a branch gradient number (BGN) of 0.01 to 1.0. According to the present invention, there is provided the polyolefin having a narrow molecular weight distribution and showing a unique comonomer distribution to have excellent impact strength and mechanical physical properties.

Abstract: The present invention discloses a transition metal compound including a heteroatom and having a novel structure, a catalyst composition including the same, and a preparation method of a polymer using the catalyst composition. The transition metal compound according to an embodiment of the present invention may be used as a catalyst having good copolymerization properties, and a polymer having a high molecular weight at a low density region may be prepared.

Abstract: The present invention relates to a catalyst composition and a method of preparing a polymer including the same.

Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the transition metal compound. The novel ligand compound and the transition metal compound of the present invention may be usefully used as the catalyst of a polymerization reaction for preparing an olefin polymer having a low density relative to a CGC catalyst. In addition, a product having a low melt index (MI) and a high molecular weight may be manufactured using the olefin polymer polymerized using the catalyst composition including the transition metal compound.

Abstract: In a method and apparatus for optically inspecting an FPD in a reduced time, the apparatus for inspecting the flat panel display (FPD) comprises a lighting device separated from a top surface of an object and emitting light toward the top surface of the object, a photographing device separated from the top surface of the object and photographing an image using light emitted from the lighting device and then reflected by the top surface of the object, a controller controlling the lighting device and the photographing device to move in a plane separated from and parallel to the top surface of the object, and an image processor connected to the photographing device and processing the photographed image, wherein the image processor samples some of pixels included in the photographed image and converts the sampled pixels to binary form.

Abstract: Provided are a forming apparatus for forming a part of a flat panel-shaped glass in a curved surface by selectively heating only a formation part, and a forming method using the same. The forming apparatus includes a transfer device configured to transfer material having a flat panel shape and a curved surface forming device configured to form at least one part of the material in a curved surface, wherein the curved surface forming device includes a forming mold on which the material is seated, a heating unit configured to heat the at least one part of the material by laser light, and a jig unit configured to form the at least one part of the material heated by laser light in a curved surface.

Abstract: The present invention relates to a novel ligand compound, a transition metal compound, and a catalytic composition including the same. The novel ligand compound and the transition metal compound of the present invention are useful as a polymerization reaction catalyst in preparing an olefin-based polymer having low density. In addition, an olefin polymer polymerized using a catalytic composition including the transition metal compound is capable of being prepared to a high molecular weight product having a low melt index (MI).

Abstract: The present invention relates to a dinuclear metallocene compound with a new structure which can manufacture polyolefin having high molecular weight and to a method for preparing the same. The dinuclear metallocene compound according to the present invention is a dinuclear metallocene compound with a new structure, and, unlike a single-site catalyst, has high accessibility to a substrate, and thus, can provide a multi-site catalyst with high activity.

Abstract: The present invention relates to a polyolefin having a molecular weight distribution of 1.5 to 3.0 and having a branch gradient number (BGN) of 0.01 to 1.0. According to the present invention, there is provided the polyolefin having a narrow molecular weight distribution and showing a unique comonomer distribution to have excellent impact strength and mechanical physical properties.

Abstract: An apparatus for detecting a pipe length in an air conditioning system includes a detector to detect a signal traveled through a pipe; and a processor to determine a pipe length based on the detected signal.

Abstract: The present specification describes a transition metal compound having a novel structure, a catalytic composition including the same, and a method for preparing a polymer using the same.

Abstract: The present invention discloses a transition metal compound having a novel structure and including a heteroatom, a catalyst composition including the same, and a method for preparing polymers using the same. The transition metal compound according to an embodiment of the present invention has good copolymerization properties, and a polymer having a low density may be prepared using thereof. Thus, a copolymer having various uses may be prepared.

Abstract: This disclosure relates to a catalyst composition that can prepare polyolefin having high molecular weight, a method for preparing the same, and a method for preparing polyolefin using the same. The dinuclear metallocene compound included in the catalyst composition according to the present invention is a dinuclear metallocene compound with a new structure, and, unlike a single-site catalyst, has high accessibility to a substrate, and thus, can provide a multi-site catalyst with high activity.

Abstract: The present invention relates to a dinuclear metallocene compound with a new structure which can manufacture polyolefin having high molecular weight and to a method for preparing the same. The dinuclear metallocene compound according to the present invention is a dinuclear metallocene compound with a new structure, and, unlike a single-site catalyst, has high accessibility to a substrate, and thus, can provide a multi-site catalyst with high activity.

Abstract: The present invention relates to a catalyst composition and a method of preparing a polymer including the same.