Patents by Inventor Byeong-do Lee

Byeong-do Lee 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: 9279049
    Abstract: A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: March 8, 2016
    Assignee: Cheil Industries Inc.
    Inventors: Jae Keun Hong, Young Sub Jin, Byeong Do Lee, Ho Ryong Sun
  • Patent number: 9228046
    Abstract: Disclosed herein is a low gloss thermoplastic resin composition with a soft touch surface comprising (A) about 10 to about 80% by weight of a soft rubbery aromatic vinyl copolymer resin which comprises rubber particles with a graft ratio of about 40 to about 90% and an average particle diameter of about 6 to about 20 ?m as a dispersed phase; (B) about 4 to about 60% by weight of a rubber-modified aromatic vinyl copolymer resin; and (C) about 5 to about 80% by weight of an aromatic vinyl-vinyl cyanide copolymer resin. The molded article molded from the thermoplastic resin composition can have a soft touch surface as well as excellent low gloss and impact strength.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: January 5, 2016
    Assignee: Cheil Industries Inc.
    Inventors: Jae Keun Hong, Hwan Seok Park, Byeong Do Lee, Young Sub Jin, Ho Ryong Sun, Sung Kwan Kim, Young Don Yoo
  • Publication number: 20150166781
    Abstract: A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration.
    Type: Application
    Filed: February 20, 2015
    Publication date: June 18, 2015
    Inventors: Jae Keun HONG, Young Sub JIN, Byeong Do LEE, Ho Ryong SUN
  • Patent number: 9000094
    Abstract: A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: April 7, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Jae Keun Hong, Young Sub Jin, Byeong Do Lee, Ho Ryong Sun
  • Publication number: 20130281569
    Abstract: A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration.
    Type: Application
    Filed: June 26, 2013
    Publication date: October 24, 2013
    Inventors: Jae Keun HONG, Young Sub JIN, Byeong Do LEE, Ho Ryong SUN
  • Publication number: 20130274431
    Abstract: Disclosed herein is a methacrylic resin prepared using a mercaptan and a lactam as an initiation system. The methacrylic resin includes an alkyl(meth)acrylate unit and a (meth)acrylamide unit, and has a weight average molecular weight of about 50,000 g/mol to about 500,000 g/mol and a glass transition temperature of about 125° C. to about 145° C.
    Type: Application
    Filed: June 17, 2013
    Publication date: October 17, 2013
    Inventors: Kwang Won SEO, Byeong Do LEE, Jae Keun HONG, Joong In KIM
  • Patent number: 8557923
    Abstract: Disclosed herein is a thermoplastic resin composition having excellent scratch resistance and a method for preparing the same. The thermoplastic resin composition comprises (A) about 80 to about 95% by weight of a terpolymer of (meth)acrylic acid alkyl ester-aromatic vinyl-cyanide vinyl compound; and (B) about 5 to about 20% by weight of a butadiene rubber.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: October 15, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Young Sub Jin, Hwan Seok Park, Jae Keun Hong, Sung Kwan Kim, Ho Ryong Sun, Byeong Do Lee, Kyung Jong Lee
  • Patent number: 8552112
    Abstract: The present invention provides a weather resistant thermoplastic resin with low gloss and a method of preparing the same. The thermoplastic resin of the present invention comprises a (meth)acrylic acid alkyl ester-based polymer (A) and a (meth)acrylic acid alkyl ester-based oligomeric prepolymer (B), and an aromatic vinyl-cyanide vinyl based copolymer (C), wherein the (meth)acrylic acid alkyl ester-based polymer (A) and the (meth)acrylic acid alkyl ester-based oligomeric prepolymer (B) form a network-shaped disperse phase and the aromatic vinyl-cyanide vinyl based copolymer (C) forms a continuous phase.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: October 8, 2013
    Assignee: Cheil Industries Inc.
    Inventors: So Young Kwon, Young Sub Jin, Sung Kwan Kim, Byeong Do Lee
  • Patent number: 8507609
    Abstract: The present invention provides a thermoplastic resin composition which comprises (A) a (meth)acrylic acid alkyl ester-based polymer forming a network-shaped disperse phase; and (B) an aromatic vinyl-cyanide vinyl based copolymer forming a continuous phase. The thermoplastic resin composition of the present invention can have an excellent low gloss characteristics while maintaining basic physical properties of a weather resistance, impact strength, thermal resistance, and delamination characteristics.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: August 13, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Young Sub Jin, So Young Kwon, Sung Kwan Kim, Hwan Seok Park, Jae Keun Hong, Byeong Do Lee, Chul In Lim
  • Patent number: 8378026
    Abstract: One aspect of the invention relates to a transparent rubber-modified styrenic resin composition. The resin composition comprises about 5 to about 30 parts by weight of a styrene-butadiene rubbery copolymer; and about 0 to about 15 parts by weight of a matrix resin comprising about 20 to about 40 parts by weight of styrenic monomer, about 30 to about 60 parts by weight of unsaturated carboxylic acid alkyl ester monomer and about 0 to about 15 parts by weight of vinyl cyanide monomer; wherein the difference between the refractive index of the rubbery copolymer and the matrix resin is about 0.005 or less and the transparent rubber-modified styrenic resin composition has a haze of about 5% or less as measured by a Nippon Denshoku Haze meter using a 3 mm thick test sample.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: February 19, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Byeong Do Lee, Young Sub Jin, Hwan Seok Park, Jae Keun Hong
  • Patent number: 8367780
    Abstract: A block or graft copolymer including a thermoplastic resin segment and as an aliphatic polyester segment is provided. The copolymer can be used as a compatibilizer for a resin alloy comprising polylactic acid, which can reduce the consumption of petroleum raw materials.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: February 5, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Ji Won Pack, Byeong Do Lee, Chang Do Jung, Hyung Tak Lee
  • Patent number: 8362143
    Abstract: Disclosed herein is a non-glossy rubber modified aromatic vinyl-vinyl cyanide copolymer and a method for continuously preparing the same. The copolymer comprises about 80 to about 93% by weight of an aromatic vinyl-vinyl cyanide copolymer grafted onto about 7 to about 20% by weight of a diene-based rubber, and a dispersed phase of the copolymer has an average rubber particle diameter of about 6 to about 20 ?m and a span of about 1.2 to about 2.8.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: January 29, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Hwan Seok Park, Young Sub Jin, Jae Keun Hong, Sung Kwan Kim, Byeong Do Lee, Ho Ryong Sun, Seung Dae Lee
  • Patent number: 8232342
    Abstract: One aspect of the invention relates to a transparent ABS resin composition having excellent impact resistance and flowability, which comprises about 10 to about 50 parts by weight of a rubber/(meth)acrylate-aromatic vinyl-unsaturated nitrile graft copolymer; about 50 to about 90 parts by weight of a thermoplastic resin matrix; and about 0.2 to about 0.5 parts by weight of a fluidizer, per 100 parts by weight of a base resin comprising the rubber/(meth)acrylate-aromatic vinyl-unsaturated nitrile graft copolymer and the thermoplastic resin matrix.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: July 31, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Young Sub Jin, Jae Keun Hong, Hwan Seok Park, Byeong Do Lee
  • Patent number: 8232349
    Abstract: Disclosed herein is a transparent thermoplastic resin comprising a rubber phase including an aromatic rubbery block copolymer resin, and a resin phase including a terpolymer comprising an aromatic vinyl compound, a vinyl cyanide compound and an unsaturated alkyl ester compound, wherein the rubber phase and the resin phase have a co-continuous phase structure.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: July 31, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Jae Keun Hong, Byeong Do Lee, Young Sub Jin, Hwan Seok Park, Ho Ryong Sun
  • Patent number: 8222344
    Abstract: A weather resistant thermoplastic resin having excellent low gloss characteristics according to the present invention comprises a (meth)acrylic acid alkyl ester-based polymer (A) and an aromatic vinyl-cyanide vinyl based copolymer (B), wherein the (meth)acrylic acid alkyl ester-based polymer (A) forms a network-shaped disperse phase, and the aromatic vinyl-cyanide vinyl based copolymer (B) forms a continuous phase. The thermoplastic resin has excellent low gloss characteristics as well as superior weatherability, impact resistance, thermal resistance, delamination characteristics, and the like.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: July 17, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Young Sub Jin, Sung Kwan Kim, Hwan Seok Park, Jae Keun Hong, Byeong Do Lee, Ho Ryong Sun, Bong Sil Jang, Chul In Lim
  • Patent number: 8097680
    Abstract: A thermoplastic resin of the present invention is prepared by copolymerizing conjugated diene rubber (A), rubbery aromatic copolymer (B), heat resistant aromatic vinyl compound (C), aromatic vinyl compound (D), unsaturated nitrile compound (E) and cross linking agent (F) and can have excellent heat resistance, impact strength, and low gloss.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: January 17, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Jae Keun Hong, Byeong Do Lee, Ho Ryong Sun, Young Sub Jin, Hwan Seok Park, Sung Kwan Kim, Jae Woo Park
  • Publication number: 20110160397
    Abstract: The present invention provides a weather resistant thermoplastic resin with low gloss and a method of preparing the same. The thermoplastic resin of the present invention comprises a (meth)acrylic acid alkyl ester-based polymer (A) and a (meth)acrylic acid alkyl ester-based oligomeric prepolymer (B), and an aromatic vinyl-cyanide vinyl based copolymer (C), wherein the (meth)acrylic acid alkyl ester-based polymer (A) and the (meth)acrylic acid alkyl ester-based oligomeric prepolymer (B) form a network-shaped disperse phase and the aromatic vinyl-cyanide vinyl based copolymer (C) forms a continuous phase.
    Type: Application
    Filed: December 29, 2010
    Publication date: June 30, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: So Young Kwon, Young Sub Jin, Sung Kwan Kim, Byeong Do Lee
  • Publication number: 20110160396
    Abstract: The present invention provides a thermoplastic resin composition which comprises (A) a (meth)acrylic acid alkyl ester-based polymer forming a network-shaped disperse phase; and (B) an aromatic vinyl-cyanide vinyl based copolymer forming a continuous phase. The thermoplastic resin composition of the present invention can have an excellent low gloss characteristics while maintaining basic physical properties of a weather resistance, impact strength, thermal resistance, and delamination characteristics.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 30, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Young Sub Jin, So Young Kwon, Sung Kwan Kim, Hwan Seok Park, Jae Keun Hong, Byeong Do Lee, Chul In Lim
  • Patent number: 7956105
    Abstract: Disclosed is a silicone impact modifier with a high refractive index. The silicone impact modifier can include (A) a rubber core including (a1) an organosiloxane cross-linked (co)polymer with a particle size of about 50 to about 400 nm and (a2) an alkylacrylate-styrenic aromatic compound cross-linked copolymer; and (B) a plastic shell including a vinyl (co)polymer. The refractive index of the silicone impact modifier of the present invention can be about 1.49 to about 1.59.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: June 7, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Han Su Lee, Sung Sig Min, Byung Choon Lee, Byeong Do Lee
  • Publication number: 20100331475
    Abstract: Disclosed herein is a low gloss thermoplastic resin composition with a soft touch surface comprising (A) about 10 to about 80% by weight of a soft rubbery aromatic vinyl copolymer resin which comprises rubber particles with a graft ratio of about 40 to about 90% and an average particle diameter of about 6 to about 20 ?m as a dispersed phase; (B) about 4 to about 60% by weight of a rubber-modified aromatic vinyl copolymer resin; and (C) about 5 to about 80% by weight of an aromatic vinyl-vinyl cyanide copolymer resin. The molded article molded from the thermoplastic resin composition can have a soft touch surface as well as excellent low gloss and impact strength.
    Type: Application
    Filed: June 30, 2010
    Publication date: December 30, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae Keun Hong, Hwan Seok Park, Byeong Do Lee, Young Sub Jin, Ho Ryong Sun, Sung Kwan Kim, Young Don Yoo