Patents by Inventor Yeong-Chool Yu

Yeong-Chool Yu 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: 11168192
    Abstract: Provided is a foamable polyamide composition comprising a) at least one polyamide comprising at least one carboxylic group; b) at least one thermoplastic rubber; and c) at least one compound having at least one isocyanate group; and optionally d) at least one filler and e) at least one additive.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: November 9, 2021
    Assignee: BASF SE
    Inventors: Jung Hoon Park, Yeong-Chool Yu
  • Publication number: 20190284360
    Abstract: Provided is a foamable polyamide composition comprising a) at least one polyamide comprising at least one carboxylic group; b) at least one thermoplastic rubber; and c) at least one compound having at least one isocyanate group; and optionally d) at least one filler and e) at least one additive.
    Type: Application
    Filed: June 6, 2019
    Publication date: September 19, 2019
    Applicant: RHODIA OPERATIONS
    Inventors: Jung Hoon Park, Yeong Chool Yu
  • Patent number: 10358536
    Abstract: Provided is a foamable polyamide composition comprising a) at least one polyamide comprising at least one carboxylic group; b) at least one thermoplastic rubber; and c) at least one compound having at least one isocyanate group; and optionally d) at least one filler and e) at least one additive.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: July 23, 2019
    Assignee: RHODIA OPERATIONS
    Inventors: Jung Hoon Park, Yeong-Chool Yu
  • Patent number: 10336904
    Abstract: A resin blend composition of a polyamide resin and a polyester resin is described, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition can have improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, and paintability.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: July 2, 2019
    Assignee: RHODIA OPERATIONS
    Inventors: Mok-Keun Lim, Kwang-Sang Lee, Yeong-Chool Yu
  • Patent number: 10301469
    Abstract: The present invention provides polyamide compositions comprising (a) at least one polyamide mixture; (b) at least one reinforcing filler; (c) at least one heat stabilizer; and (d) at least one ionic lubricant, wherein the (a) at least one polyamide mixture is formed from (i) a polyamide 6,6, the amount of AEG being greater than the amount of CEG, and (ii) a blend of a first high chain-length polyamide having viscosity number (VN) of X1 and a second high chain-length polyamide having VN of X2, X1 being greater than X2. The polyamide composition can be advantageously used to produce articles exhibiting enhanced chemical resistance, notably CaCl2 salt crack resistance, such as radiator end tank in an automobile.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: May 28, 2019
    Assignee: RHODIA OPERATIONS
    Inventors: Jin-Kyung Jung, Elodie Seignobos, Yeong-Chool Yu
  • Patent number: 9922749
    Abstract: The present invention relates to a composition containing a polyamide matrix having high thermal conductivity, and including a nitride and a metal oxide, as well as, optionally, a flame-retardant system. Said composition can be used in particular for producing components for lighting apparatuses including light-emitting diodes.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: March 20, 2018
    Assignee: Rhodia Operations
    Inventors: Yeong-Chool Yu, Tae-Kyun Kim
  • Publication number: 20180030272
    Abstract: Composition comprising polyamide 66 and a polyamide chosen from the group consisting of: polyamide 610, polyamide 1010 and polyamide 1012. The present invention concerns a composition comprising at least polyamide 66 and a polyamide chosen from the group consisting of: polyamide 610, polyamide 1010 and polyamide 1012; and optionally fillers and/or additives. Such a composition has good chemical resistance, in particular to chlorides and cooling fluids.
    Type: Application
    Filed: October 8, 2015
    Publication date: February 1, 2018
    Inventors: Yeong-Chool YU, Jin-Kyung JUNG
  • Publication number: 20170335106
    Abstract: The present invention provides polyamide compositions comprising (a) at least one polyamide mixture; (b) at least one reinforcing filler; (c) at least one heat stabilizer; and (d) at least one ionic lubricant, wherein the (a) at least one polyamide mixture is formed from (i) a polyamide 6,6, the amount of AEG being greater than the amount of CEG, and (ii) a blend of a first high chain-length polyamide having viscosity number (VN) of X1 and a second high chain-length polyamide having VN of X2, X1 being greater than X2. The polyamide composition can be advantageously used to produce articles exhibiting enhanced chemical resistance, notably CaCl2 salt crack resistance, such as radiator end tank in an automobile.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 23, 2017
    Applicant: RHODIA OPERATIONS
    Inventors: Jin-Kyung JUNG, Elodie SEIGNOBOS, Yeong-Chool YU
  • Publication number: 20170145212
    Abstract: A resin blend composition of a polyamide resin and a polyester resin is described, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition can have improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, and paintability.
    Type: Application
    Filed: January 26, 2017
    Publication date: May 25, 2017
    Inventors: Mok-Keun LIM, Kwang-Sang LEE, Yeong-Chool YU
  • Patent number: 9570665
    Abstract: The present invention relates to a composition based on a polyamide matrix having a high thermal conductivity and comprising specific proportions of alumina and of graphite and also a flame-retardant system. This composition may in particular be used for producing components for lighting devices comprising light-emitting diodes.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 14, 2017
    Assignee: RHODIA OPERATIONS
    Inventors: Tae-Kyun Kim, Yeong-Chool Yu
  • Publication number: 20160257798
    Abstract: Provided is a foamable polyamide composition comprising a) at least one polyamide comprising at least one carboxylic group; b) at least one thermoplastic rubber; and c) at least one compound having at least one isocyanate group; and optionally d) at least one filler and e) at least one additive.
    Type: Application
    Filed: October 16, 2014
    Publication date: September 8, 2016
    Inventors: Jung Hoon PARK, Yeong-Chool YU
  • Publication number: 20150080534
    Abstract: The present invention concerns a method of preparing a hybrid fiber including polyamide and polyester. Particularly, the method of preparing a hybrid fiber comprises, forming a blend by melting a) 4.99 to 95% by weight of a thermoplastic polyamide resin, b) 4.99 to 95% by weight of a thermoplastic polyester resin, and c) 0.01 to 10% by weight of an epoxy resin at 250 to 300° C., and blend spinning and elongating 10 to 90% by weight of the blend with 90 to 10% by weight of a polyester resin. The hybrid fiber shows highly improved compatibility of the polyamide resin and the thermoplastic polyester resin, and shows excellent strength and elongation.
    Type: Application
    Filed: March 7, 2013
    Publication date: March 19, 2015
    Inventors: Mok-Keun Lim, Kwang Sang Lee, Yeong Chool Yu
  • Publication number: 20140378604
    Abstract: Composition comprising polyamide 66 and a polyamide chosen from the group consisting of: polyamide 610, polyamide 1010 and polyamide 1012. The present invention concerns a composition comprising at least polyamide 66 and a polyamide chosen from the group consisting of: polyamide 610, polyamide 1010 and polyamide 1012; and optionally fillers and/or additives. Such a composition has good chemical resistance, in particular to chlorides and cooling fluids.
    Type: Application
    Filed: September 20, 2012
    Publication date: December 25, 2014
    Inventors: Yeong-Chool Yu, Jin-Kyung Jung
  • Patent number: 8900745
    Abstract: Packing seals made from a polyamide composition including at least polyamide 66 and polyamide 610 for alkaline batteries, optionally fillers and/or additives are described. The packing seals can be used in particular for standard “AAA” (LR03) and “AA” (LR6) batteries.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: December 2, 2014
    Assignee: Rhodia Operations
    Inventors: Kwang-Sang Lee, Yeong Chool Yu
  • Publication number: 20140235770
    Abstract: The present invention relates to a composition containing a polyamide matrix having high thermal conductivity, and including a nitride and a metal oxide, as well as, optionally, a flame-retardant system. Said composition can be used in particular for producing components for lighting apparatuses including light-emitting diodes.
    Type: Application
    Filed: September 25, 2012
    Publication date: August 21, 2014
    Applicant: RHODIA OPERATIONS
    Inventors: Yeong-Chool Yu, Tae-Kyun Kim
  • Publication number: 20140048841
    Abstract: The present invention relates to a composition based on a polyamide matrix having a high thermal conductivity and comprising specific proportions of alumina and of graphite and also a flame-retardant system. This composition may in particular be used for producing components for lighting devices comprising light-emitting diodes.
    Type: Application
    Filed: March 30, 2012
    Publication date: February 20, 2014
    Applicant: RHODIA OPERATIONS
    Inventors: Tae-Kyun Kim, Yeong-Chool Yu
  • Publication number: 20130200308
    Abstract: Packing seals made from a polyamide composition including at least polyamide 66 and polyamide 610 for alkaline batteries, optionally fillers and/or additives are described. The packing seals can be used in particular for standard “AAA” (LR03) and “AA” (LR6) batteries.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 8, 2013
    Applicant: RHODIA OPERATIONS
    Inventors: Kwang-Sang Lee, Yeong Chool Yu
  • Patent number: 8268450
    Abstract: Thermoplastic polyamide resin compositions include the essential components of polyamide resins, polyalcohol and epoxy resin, and, optionally, one or more additives selected from among thermoplastic impact modifiers, reinforcement agents, and polyoxides; such thermoplastic polyamide resin compositions provide superior impact resistance, heat resistance, low degree of deformation, low degree of contraction, and external appearance, but also superior paint adhesion properties without requiring a primer, and function as an adhesion medium that advantageously may be applied to the interior and exterior parts of an automobile requiring painting.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 18, 2012
    Assignee: Rhodia Polyamide Co., Ltd.
    Inventors: Lee-Wook Jang, Yeong-Chool Yu, Jong-Su Lee
  • Publication number: 20120108701
    Abstract: A resin blend composition of a polyamide resin and a polyester resin is described, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition can have improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, and paintability.
    Type: Application
    Filed: June 18, 2010
    Publication date: May 3, 2012
    Inventors: Mok-Keun Lim, Kwang-Sang Lee, Yeong Chool Yu
  • Publication number: 20110020651
    Abstract: Thermoplastic polyamide resin compositions include the essential components of polyamide resins, polyalcohol and epoxy resin, and, optionally, one or more additives selected from among thermoplastic impact modifiers, reinforcement agents, and polyoxides; such thermoplastic polyamide resin compositions provide superior impact resistance, heat resistance, low degree of deformation, low degree of contraction, and external appearance, but also superior paint adhesion properties without requiring a primer, and function as an adhesion medium that advantageously may be applied to the interior and exterior parts of an automobile requiring painting.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 27, 2011
    Inventors: Lee-Wook Jang, Yeong-Chool Yu, Jong-Su Lee