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Hanwha Chemical Corporation patents


Recent patent applications related to Hanwha Chemical Corporation. Hanwha Chemical Corporation is listed as an Agent/Assignee. Note: Hanwha Chemical Corporation may have other listings under different names/spellings. We're not affiliated with Hanwha Chemical Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hanwha Chemical Corporation-related inventors


Polysilicon manufacturing apparatus

Provided is a polysilicon manufacturing apparatus including a reactor disposed on a base plate to form a reaction chamber, a pair of electrical feedthroughs installed on the base plate to be extended to the inside of the reaction chamber, rod filaments installed on the electrical feedthroughs in the reaction chamber and connected to each other by a rod bridge at the upper end to form a silicon rod by chemical vapor deposition of source gas introduced to a gas inlet, and a cooling jacket inserted to a through-hole provided at the upper side of the reactor to be supported to the base plate, connected to a gas outlet formed on the base plate by forming a gas passage discharging the gas after reaction, and introducing and circulating a low-temperature coolant to a coolant passage from the outside of the reactor by forming the coolant passage at the outside of the gas passage to discharge a high-temperature coolant to the outside of the reactor.. . ... Hanwha Chemical Corporation

Polysilicon preparation apparatus

The present invention provides a polysilicon manufacturing apparatus that can prevent generation of popcorns in the entire cvd reaction process by cooling an upper portion of a silicon rod where a rod bridge is disposed. A polysilicon manufacturing apparatus according to an exemplary embodiment of the present invention includes: a reactor provided on a base and forming a reaction chamber; a pair of feedthroughs provided in the base and extending into the reaction chamber; rod filaments provided in the feedthroughs in the reaction chamber, connected with each other at upper ends thereof through a rod bridge, and where a silicon rod of polysilicon is formed from a raw material gas through a chemical vapor deposition (cvd) process; and cooling spray nozzles spraying a cooling gas to the silicon rod formed as silicon deposited around the rod bridge and the rod filaments.. ... Hanwha Chemical Corporation

Metallocene compound and preparation method therefor

A preparation method for a metallocene compound is provided. The method includes: stirring at least one compound i among compounds expressed by the following chemical formula (i) and a hydrogenation reaction catalyst of 0.10 to 0.55 parts by weight based on 100 parts by weight of the compound i under a hydrogen atmosphere; and obtaining a metallocene compound containing at least one first compound among the compounds expressed by the following chemical formula (1). ... Hanwha Chemical Corporation

Gas distribution device for fluidised-bed reactor system, fluidised-bed reactor system comprising gas distribution device, and method for preparing granular polysilicon using fluidised-bed reactor system

The present invention relates to a gas distribution unit for a fluidized bed reactor system, a fluidized bed reactor system having the gas distribution unit, and a method for preparing granular polysilicon using the fluidized bed reactor system. The gas distribution unit for a fluidized bed reactor system according to the present invention enables gas flow rate control and gas composition control for each zone within the plenum chamber. ... Hanwha Chemical Corporation

Method for regenerating hydrogenation catalyst for phthalate compound

The present invention relates to a method for regenerating a hydrogenation catalyst for a phthalate compound. More specifically, the present invention regenerates a hydrogenation catalyst for a phthalate compound by using an alcohol, and thereby provides a method for regenerating a hydrogenation catalyst for a phthalate compound that is capable of continuously hydrogenating a phthalate compound without replacing a catalyst in a catalytic reactor, and is also capable of improving operational stability and the lifetime of a catalyst and increasing economic efficiency.. ... Hanwha Chemical Corporation

Novel group 4 transition metal compound and use thereof

The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition comprising the compound, and a method for preparing a polyolefin comprising performing a polymerization reaction of olefin monomers, in the presence of the catalyst composition. Since the group 4 transition metal compound of the present invention exhibits an excellent catalytic activity in polyolefin synthesis reactions, as well as having excellent thermal stability, it can be used for polyolefin synthesis reactions at high temperatures, and by changing the type of a central metal and ligand, the weight average molecular weight of synthesized polyolefins and the octene content in the polymer can be controlled. ... Hanwha Chemical Corporation

Novel group 4 transition metal compound and use thereof

The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition comprising the compound, and a method for preparing a polyolefin comprising performing a polymerization reaction of olefin monomers, in the presence of the catalyst composition. Since the group 4 transition metal compound of the present invention exhibits an excellent catalytic activity in polyolefin synthesis reactions, as well as having excellent thermal stability, it can be used for polyolefin synthesis reactions at high temperatures, and by changing the type of a central metal and ligand, the weight average molecular weight of synthesized polyolefins and the octene content in the polymer can be controlled. ... Hanwha Chemical Corporation

Stripping method

The present invention relates to a stripping method capable of recovering, by an environmentally friendly method, a high-purity ester-based compound without concern over the oxidation of an ester-based compound from a mixture containing the ester-based compound. The stripping method has advantages of generating no wastewater, enabling equipment costs to be reduced by simplifying the process, removing concern over the oxidation of an ester-based compound during the process, and enabling the reuse of the components recovered in the process.. ... Hanwha Chemical Corporation

Novel group 4 transition metal compound and use thereof

The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition containing the compound, and a method for preparing a polyolefin, comprising a step for forming a polymerization reaction of olefin monomers in the presence of the catalyst composition. The group 4 transition metal compound of the present invention exhibits an excellent catalytic activity and has excellent thermal stability in a polyolefin synthesis reaction, and thus can be used even in a polyolefin synthesis reaction at a high temperature. ... Hanwha Chemical Corporation

Heat sealable polymer emulsion for blister packaging and method for preparing same

The present invention provides a polymer emulsion having heat sealability for a blister package, and a method for preparing the same. Since the polymer emulsion of the present invention includes latex particles having an average particle diameter of a nanosize and a low unimodal particle size distribution, it may exhibit uniform and stable emulsion properties, particularly excellent heat sealability, and thus may be suitably used for a blister package and on the like. ... Hanwha Chemical Corporation

Apparatus for cutting super absorbent polymer and method for preparing super absorbent polymer using same

The present invention relates to an apparatus for cutting a super absorbent polymer and a method for preparing a super absorbent polymer using the same. The apparatus for cutting a super absorbent polymer of the present invention includes: an injection part for injecting a super absorbent polymer; a first cutter for primarily cutting the super absorbent polymer; a second cutter for secondarily cutting the super absorbent polymer; and a discharging part for discharging the cut super absorbent polymer.. ... Hanwha Chemical Corporation

Trichlorosilane preparation method

Provided is a method of preparing trichlorosilane, more particularly, a method of preparing trichlorosilane which trichlorosilane can be obtained with an improved yield using a catalyst-supported silicon.. . ... Hanwha Chemical Corporation

Purification method and purification apparatus for off-gas

The present invention relates to a purification method and a purification apparatus for off-gas. More specifically, the present invention relates to a purification method and a purification apparatus for off-gas, capable of lowering the concentration of hydrogen chloride and separating high-purity hydrogen from the off-gas, which is discharged after performing a polysilicon deposition process by a chemical vapor deposition reaction.. ... Hanwha Chemical Corporation








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