Patents by Inventor In-hui CHOI

In-hui CHOI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8884071
    Abstract: Disclosed is a hydroformylation method having improved catalyst stability in a reaction. Advantageously, provided is a hydroformylation method in which a specific ?,?-unsaturated carbonyl compound is incorporated during a hydroformylation reaction to prevent alkyl phosphite decomposed from a phosphite ligand from acting as a catalyst poison, thereby improving a yield of reaction and inhibiting decomposition of ligand and catalyst.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: November 11, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Hyun Ko, Sung-Shik Eom, Moo-Ho Hong, O-Hak Kwon, Jae-Hui Choi, Dae-Chul Kim
  • Publication number: 20140249333
    Abstract: The present invention relates to an apparatus for coproducting iso-type reaction product and alcohol from olefin, and a method for coproducting using the apparatus, in which the hydroformylation reactor provides a sufficient reaction area due to the broad contact surface area between the olefin and the synthesis gases that are the raw materials by a distributor plate installed in the reactor, and the raw materials can be sufficiently mixed with the reaction mixture due to the circulation of the reaction mixture so that the efficiency of the production of the aldehyde is excellent; and also the hydrogenation reactor suppresses the side reaction so that the efficiency for producing aldehyde and alcohol are all increased, and also iso-type reaction product and alcohol can be efficiently co-produced.
    Type: Application
    Filed: May 12, 2014
    Publication date: September 4, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Dong-Hyun KO, Moo-Ho HONG, Sung-Shik EOM, Yong-Jin CHOE, O-Hak KWON, Dae-Chul KIM, Jae-Hui CHOI
  • Patent number: 8791304
    Abstract: The present invention relates to an apparatus for coproducting iso-type reaction product and alcohol from olefin, and a method for coproducting using the apparatus, in which the hydroformylation reactor provides a sufficient reaction area due to the broad contact surface area between the olefin and the synthesis gases that are the raw materials by a distributor plate installed in the reactor, and the raw materials can be sufficiently mixed with the reaction mixture due to the circulation of the reaction mixture so that the efficiency of the production of the aldehyde is excellent; and also the hydrogenation reactor suppresses the side reaction so that the efficiency for producing aldehyde and alcohol are all increased, and also iso-type reaction product and alcohol can be efficiently co-produced.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: July 29, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Hyun Ko, Moo-Ho Hong, Sung-Shik Eom, Yong-Jin Choe, O-Hak Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Publication number: 20140135533
    Abstract: Disclosed is a hydroformylation method having improved catalyst stability in a reaction. Advantageously, provided is a hydroformylation method in which a specific ?,?-unsaturated carbonyl compound is incorporated during a hydroformylation reaction to prevent alkyl phosphite decomposed from a phosphite ligand from acting as a catalyst poison, thereby improving a yield of reaction and inhibiting decomposition of ligand and catalyst.
    Type: Application
    Filed: June 4, 2012
    Publication date: May 15, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Dong-Hyun Ko, Sung-Shik Eom, Moo-Ho Hong, O-Hak Kwon, Jae-Hui Choi, Dae-Chul Kim
  • Patent number: 8710276
    Abstract: Disclosed are a catalyst composition for hydroformylation of olefin compounds, comprising a specific phosphine ligand and a transition metal catalyst, and a hydroformylation process using the same. Through a hydroformylation process using the catalyst composition according to the present invention, a suitable selectivity of iso-aldehyde can be maintained, catalyst stability can be improved, the amount of used ligand can be reduced and superior catalyst activity can be obtained.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 29, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong Hyun Ko, Sung Shik Eom, O Hak Kwon, Hye Won Yang, Jae Hui Choi
  • Patent number: 8673244
    Abstract: The present invention relates to an apparatus for producing alcohols from olefins, comprising: a hydroformylation reactor wherein aldehydes are produced from olefins; a catalyst/aldehydes separator; a hydrogenation reactor wherein the aldehydes are hydrogenated to produce alcohols; and a distillation column. The hydroformylation reactor is equipped with a distributor plate, which has a broad contact surface for providing sufficient reaction area for reactants such as olefins and synthesis gas, and allows the reaction mixture to circulate and mix sufficiently, which contribute to excellent efficiency in terms of production of aldehydes. In addition, the hydrogenation reactor suppresses sub-reactions to improve the production yield of alcohols.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: March 18, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Hyun Ko, Sung-Shik Eom, Yong-Jin Choe, Chan-Hong Lee, Moo-Ho Hong, O-Hak Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Publication number: 20140051893
    Abstract: The present invention relates to an apparatus for producing alcohols from olefins, comprising: a hydroformylation reactor wherein aldehydes are produced from olefins; a catalyst/aldehydes separator; a hydrogenation reactor wherein the aldehydes are hydrogenated to produce alcohols; and a distillation column. The hydroformylation reactor is equipped with a distributor plate, which has a broad contact surface for providing sufficient reaction area for reactants such as olefins and synthesis gas, and allows the reaction mixture to circulate and mix sufficiently, which contribute to excellent efficiency in terms of production of aldehydes. In addition, the hydrogenation reactor suppresses sub-reactions to improve the production yield of alcohols.
    Type: Application
    Filed: October 23, 2013
    Publication date: February 20, 2014
    Applicant: LG Chem, Ltd.
    Inventors: Dong-Hyun Ko, Sung-Shik Eom, Yong-Jin Choe, Chan-Hong Lee, Moo-Ho Hong, O-Hak Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Publication number: 20130331612
    Abstract: The present invention relates to an apparatus for coproducting iso-type reaction product and alcohol from olefin, and a method for coproducting using the apparatus, in which the hydroformylation reactor provides a sufficient reaction area due to the broad contact surface area between the olefin and the synthesis gases that are the raw materials by a distributor plate installed in the reactor, and the raw materials can be sufficiently mixed with the reaction mixture due to the circulation of the reaction mixture so that the efficiency of the production of the aldehyde is excellent; and also the hydrogenation reactor suppresses the side reaction so that the efficiency for producing aldehyde and alcohol are all increased, and also iso-type reaction product and alcohol can be efficiently co-produced.
    Type: Application
    Filed: July 11, 2011
    Publication date: December 12, 2013
    Inventors: Dong-Hyun Ko, Moo-Ho Hong, Sung-Shik Eom, Yong-Jin Choe, O-Hak Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Publication number: 20130317256
    Abstract: Disclosed are a catalyst composition for hydroformylation of olefin compounds, comprising a specific phosphine ligand and a transition metal catalyst, and a hydroformylation process using the same. Through a hydroformylation process using the catalyst composition according to the present invention, a suitable selectivity of iso-aldehyde can be maintained, catalyst stability can be improved, the amount of used ligand can be reduced and superior catalyst activity can be obtained.
    Type: Application
    Filed: July 24, 2013
    Publication date: November 28, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Dong Hyun KO, Sung Shik EOM, O Hak KWON, Hye Won YANG, Jae Hui CHOI
  • Patent number: 8532471
    Abstract: A mobile communications terminal and method for reservation-recording a particular broadcast program or content, are provided. The method according to an embodiment includes temporarily reserving a recording of a particular broadcast program or content into a temporary list, reserving a recording of the particular broadcast program or content into a reservation list based on the temporary list, and recording the particular broadcast program or content based on the reservation list.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: September 10, 2013
    Assignee: LG Electronics Inc.
    Inventor: Bo-Hui Choi
  • Patent number: 8426651
    Abstract: The present invention relates to a catalyst composition for hydroformylation and a method for preparing aldehydes using the same, wherein the catalyst composition for hydroformylation comprises: a triaryl phosphine ligand; a phosphine oxide or phosphine sulfide ligand having a specific chemical formula; and a transition metal catalyst. The catalyst composition provides high catalyst activity and stability and selectivity to normal aldehydes when used in the hydroformylation for preparing aldehydes from olefins.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: April 23, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jae Hui Choi, Dong Hyun Ko, Sung Shik Eom, Moo Ho Hong, O Hark Kwon, Dae Chul Kim
  • Publication number: 20120059195
    Abstract: The present invention relates to a catalyst composition for hydroformylation reaction and a hydroformylation process using the same. In the hydroformylation process using the catalyst composition according to the present invention, increased catalytic stability and high catalytic activity can be obtained, and the selectivity of iso-aldehyde produced can be desirably controlled.
    Type: Application
    Filed: July 28, 2011
    Publication date: March 8, 2012
    Applicant: LG Chem, Ltd.
    Inventors: Jae-Hui Choi, Dong-Hyun Ko, O-Hak Kwon, Sung-Shik Eom, Moo-Ho Hong, Hye-Won Yang
  • Publication number: 20110282108
    Abstract: The present invention relates to an apparatus for producing alcohols from olefins, comprising: a hydroformylation reactor wherein aldehydes are produced from olefins; a catalyst/aldehydes separator; a hydrogenation reactor wherein the aldehydes are hydrogenated to produce alcohols; and a distillation column. The hydroformylation reactor is equipped with a distributor plate, which has a broad contact surface for providing sufficient reaction area for reactants such as olefins and synthesis gas, and allows the reaction mixture to circulate and mix sufficiently, which contribute to excellent efficiency in terms of production of aldehydes. In addition, the hydrogenation reactor suppresses sub-reactions to improve the production yield of alcohols.
    Type: Application
    Filed: March 30, 2011
    Publication date: November 17, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Dong-Hyun Ko, Sung-Shik Eom, Yong-Jin Choe, Chan-Hong Lee, Moo-Ho Hong, O-Hak Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Patent number: 8053605
    Abstract: The present invention relates to a catalyst composition that includes a triphenylphosphine ligand, a monodentate phosphine ligand, a monodentate phosphine oxide ligand, and a transition metal catalyst, and a hydroformylation process using the same. In the hydroformylation process using the catalyst composition according to the present invention, the high catalytic activity can be obtained, and the selectivity (N/I selectivity) in respects to normal- or iso-aldehyde can be desirably controlled.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: November 8, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jae-Hui Choi, Dong-Hyun Ko, Sung-Shik Eom, Sang-Gi Lee, Moo-Ho Hong, O-Hark Kwon
  • Publication number: 20110201844
    Abstract: The present invention relates to a catalyst composition for hydroformylation and a method for preparing aldehydes using the same, wherein the catalyst composition for hydroformylation comprises: a triaryl phosphine ligand; a phosphine oxide or phosphine sulfide ligand having a specific chemical formula; and a transition metal catalyst. The catalyst composition provides high catalyst activity and stability and selectivity to normal aldehydes when used in the hydroformylation for preparing aldehydes from olefins.
    Type: Application
    Filed: April 22, 2011
    Publication date: August 18, 2011
    Inventors: Jae Hui Choi, Dong Hyun Ko, Sung Shik Eom, Moo Ho Hong, O Hark Kwon, Dae Chul Kim
  • Publication number: 20110135544
    Abstract: The present invention relates to a method for preparing aldehydes by reacting olefins with a synthesis gas including carbon monoxide and hydrogen, and to an apparatus therefore. More particularly, the present invention relates to a method for preparing aldehydes, characterized by spraying and supplying olefins, synthesis gas including carbon monoxide and hydrogen, and a catalyst composition into an oxo reactor through a nozzle, and to an apparatus therefore. According to the present invention, the hydroformylation efficiency can be improved, thereby obtaining desirable aldehydes with a high yield.
    Type: Application
    Filed: January 17, 2011
    Publication date: June 9, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Moo-Ho Hong, Dong-Hyun Ko, Sang-Oeb Na, Sung-Shik Eom, Sang-Gi Lee, O-Hark Kwon, Dae-Chul Kim, JAE-Hui Choi
  • Patent number: 7943801
    Abstract: The present invention relates to a catalyst composition that includes a bis-phosphite ligand, a poly-phosphite ligand or a mono-phosphite ligand, and a transition metal catalyst, and a hydroformylation reaction using the same. The catalyst composition has the excellent catalytic activity, and the normal/iso (N/I) selectivity of aldehyde generated by the hydroformylation reaction using the same is increased.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: May 17, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jae-Hui Choi, Dong-Hyun Ko, Sung-Shik Eom, Ji-Joong Moon, Sang-Gi Lee, O-Hark Kwon
  • Patent number: 7939694
    Abstract: The present invention relates to a method for preparing aldehydes by reacting olefins with a synthesis gas including carbon monoxide and hydrogen, and to an apparatus therefore. More particularly, the present invention relates to a method for preparing aldehydes, characterized by spraying and supplying olefins, synthesis gas including carbon monoxide and hydrogen, and a catalyst composition into an oxo reactor through a nozzle, and to an apparatus therefore. According to the present invention, the hydroformylation efficiency can be improved, thereby obtaining desirable aldehydes with a high yield.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: May 10, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Moo-Ho Hong, Dong-Hyun Ko, Sang-Oeb Na, Sung-Shik Eom, Sang-Gi Lee, O-Hark Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Publication number: 20100324339
    Abstract: The present invention relates to a catalyst composition that includes a triphenylphosphine ligand, a monodentate phosphine ligand, a monodentate phosphine oxide ligand, and a transition metal catalyst, and a hydroformylation process using the same. In the hydroformylation process using the catalyst composition according to the present invention, the high catalytic activity can be obtained, and the selectivity (N/I selectivity) in respects to normal- or iso-aldehyde can be desirably controlled.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 23, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Jae-Hui Choi, Dong-Hyun Ko, Sung-Shik Eom, Sang-Gi Lee, Moo-Ho Hong, O-Hark Kwon
  • Publication number: 20100185018
    Abstract: The present invention relates to a method for preparing aldehydes by reacting olefins with a synthesis gas including carbon monoxide and hydrogen, and to an apparatus therefore. More particularly, the present invention relates to a method for preparing aldehydes, characterized by spraying and supplying olefins, synthesis gas including carbon monoxide and hydrogen, and a catalyst composition into an oxo reactor through a nozzle, and to an apparatus therefore. According to the present invention, the hydroformylation efficiency can be improved, thereby obtaining desirable aldehydes with a high yield.
    Type: Application
    Filed: May 29, 2008
    Publication date: July 22, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Moo-Ho Hong, Dong-Hyun Ko, Sang-Oeb Na, Sung-Shik Eom, Sang-Gi Lee, O-Hark Kwon, Dae-Chul Kim, Jae-Hui Choi