摘要:
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.
摘要:
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.
摘要:
Active materials for flow batteries can include various coordination compounds formed from transition metals. Some compositions containing coordination compounds can include a substituted catecholate ligand having a structure of in a neutral form or a salt form, in which Z is a heteroatom functional group bound to the substituted catecholate ligand at an open aromatic ring position and n is an integer ranging between 1 and 4. When more than one Z is present, each Z can be the same or different. Electrolyte solutions can include such coordination compounds, and such electrolyte solutions can be incorporated within a flow battery.
摘要:
The present invention provides a method for producing an aryloxytitanium composition that can solve the problems of the clogging of the storage tank, the piping, the pump, and the like during storage and transfer, and the like, and a decrease in catalytic activity which occurs during long-term storage, and is extremely preferred as a catalyst for the production of a diaryl carbonate. A method for producing an aryloxytitanium composition, comprising a step (1) of adding a diaryl carbonate to an organic oxytitanium composition having an R-O-Ti linkage, wherein R represents an organic group containing 1 to 20 carbon atoms, and evaporating a component having a lower boiling point than that of the diaryl carbonate, together with the diaryl carbonate, so as to obtain an aryloxytitanium composition.
摘要:
Organic electronic devices comprising a covalently bonded organic/inorganic composite layer. The composite layer may be formed by the reaction of a metal alkoxide with a charge transport compound having one or more hydroxyl groups. Examples of metal alkoxides that can be used include vanadium alkoxides, molybdenum alkoxides, titanium alkoxides, or silicon alkoxides. This composite layer can be used for any of the various charge conducting layers in an organic electronic device, including the hole injection layer.
摘要:
The present invention provides a novel transition metal compound and a catalyst composition containing same, the transition metal compound having excellent polymer reactivity along with structural stability, thereby being capable of being usefully employed as a catalyst in preparing an olefin-based polymer, and especially, an olefin-based polymer having high molecular weight and low density.
摘要:
A method for producing an aqueous electrolyte comprising a redox-active coordination compound of a transition metal which comprises reacting an oxide of the corresponding transition metal in an aqueous reaction medium with a chelating agent in a hydrothermal reaction zone at a temperature in the range of from 100° C. to 160° C. for a period of from 4 hours to 48 hours.
摘要:
Active materials for flow batteries can include various coordination compounds formed from transition metals. Some compositions containing coordination compounds can include a substituted catecholate ligand having a structure of in a neutral form or a salt form, in which Z is a heteroatom functional group bound to the substituted catecholate ligand at an open aromatic ring position and n is an integer ranging between 1 and 4. When more than one Z is present, each Z can be the same or different. Electrolyte solutions can include such coordination compounds, and such electrolyte solutions can be incorporated within a flow battery.
摘要:
The present invention relates to a novel ligand compound, a transition metal compound, and a catalyst composition containing the compounds. The novel ligand compound and the transition metal compound of the present invention can be useful as a catalyst for polymerization in the preparation of an olefin-based polymer having a low density compared with that of a CGC catalyst. In addition, an olefin polymer polymerized by using a catalyst composition containing the transition metal compound enables the preparation of a high-molecular-weight product having a low melt index (MI).
摘要:
The present disclosure relates to a transition metal based pro-catalyst represented by Formula I: wherein, the substituents have the meaning as defined in the specification. The present disclosure also relates to a process for preparing the transition metal based pro-catalyst represented by Formula I and the catalyst composition obtained therefrom. Further, the present disclosure relates to a process for polymerizing olefins by employing the catalyst composition comprising the transition metal based pro-catalyst represented by Formula I.