Patents by Inventor Tae-Yi Choi

Tae-Yi 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: 11851588
    Abstract: The present invention provides an adhesive tape including: a base material; and an adhesive sheet provided on one surface of the base material and including cured products of an aqueous acrylic adhesive composition, in which the adhesive sheet has a porous structure including pores, and wherein the adhesive tape has a water vapor transmission rate of 3,000 g/m2·day or more and 5,000 g/m2·day or less under conditions of a temperature of 40° C. and a relative humidity of 20%, and a method for manufacturing the same.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: December 26, 2023
    Inventors: Jeong-In Han, Won-Gu Choi, Jang-Soon Kim, Tae-Yi Choi, Ji-Yeon Yang, Dan-A Kim, Seo-Hyeon Park
  • Patent number: 11572466
    Abstract: The present invention relates to a cured product having excellent stain resistance and low gloss, a method of manufacturing the same, and an interior material including the cured product. The cured product according to the present invention is formed by sequentially applying light in different specific wavelength ranges to a composition to cure the composition, thereby being capable of realizing a low gloss of 9 or less, based on a 60 degree gloss meter, without use of a matting agent and excellent stain resistance and exhibiting excellent abrasion resistance. Accordingly, the cured product may be usefully used as an interior material such as a flooring material.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: February 7, 2023
    Assignee: LG Hausys, Ltd.
    Inventors: Ji Yeon Seo, Heon Jo Kim, Tae Yi Choi
  • Publication number: 20220347718
    Abstract: The present invention relates to a cured product having excellent stain resistance and low gloss, a method of manufacturing the same, and an interior material including the cured product. The cured product according to the present invention includes, along with an acrylic oligomer, an oligomer having a functional group containing silicon (Si) and an oligomer having a functional group containing fluorine (F), and thus, has excellent stain resistance and can implement a micro-folded structure on a surface thereof through extreme ultraviolet rays to be used during curing, thereby being capable of realizing low gloss without a matting agent.
    Type: Application
    Filed: July 18, 2022
    Publication date: November 3, 2022
    Inventors: Ji Yeon SEO, Heon Jo KIM, Min Kyung PARK, Tae Yi CHOI
  • Patent number: 11261353
    Abstract: The present invention relates to a rubber-based adhesive composition and a rubber-based adhesive using the same, the composition including: a rubber-based resin; and a rosin-based resin having at least one hydrophilic group.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: March 1, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Seung-Won Lee, Eun-Kyung Park, Won-Gu Choi, Jang-Soon Kim, Sang-Hwan Kim, Tae-Yi Choi
  • Patent number: 11136478
    Abstract: Provided are: an acrylic adhesive sheet having a porous structure including a plurality of pores and having a water vapor transmission rate of 2,000 g/m2·24 h to 3,500 g/m2·24 h at 24° C. and 25% RH, and a porosity of 10% to 60%; and a medical adhesive tape including the same.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: October 5, 2021
    Inventors: Jeong-In Han, Dan-A Kim, Jang-Soon Kim, Seong-Hoon Yue, Tae-Yi Choi, Ji-Yeon Yang
  • Patent number: 10787594
    Abstract: The present invention relates to an optical adhesive composition including: a thermosetting component including an isoprene-based rubber containing a carboxyl group, and a thermal curing agent; and a photo-curable component including an acrylic acid ester-based monomer, and a photoinitiator, in order to exhibit high barrier performance on the basis of a low water vapor transmission rate, and simultaneously, exhibit excellent adhesive performance by being applied to an optical device or a display device. In addition, the present invention provides an optical adhesive film including an adhesive layer including a photo-cured product of the optical adhesive composition, thereby obtaining advantages of ensuring an excellent cutting property and an excellent handling property, and improving a step difference absorbency.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: September 29, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Seung-Won Lee, Eun-Kyung Park, Tae-Yi Choi, Won-Gu Choi, Jang-Soon Kim
  • Patent number: 10647894
    Abstract: Provided is an adhesive composition for an optical use, including: a first isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 100,000 g/mol to 1,000,000 g/mol; and a second isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 5,000 g/mol to 100,000 g/mol, in which the first isobutylene-isoprene-based rubber and the second isobutylene-isoprene-based rubber each include a hydroxy group. Further, provided is an adhesive layer including a thermally cured product of the adhesive composition for optical use.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: May 12, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kwang Su Seo, Eun Kyung Park, Seung Won Lee, Jang Soon Kim, Tae Yi Choi
  • Publication number: 20200140725
    Abstract: The present invention relates to a rubber-based adhesive composition and a rubber-based adhesive using the same, the composition including: a rubber-based resin; and a rosin-based resin having at least one hydrophilic group.
    Type: Application
    Filed: January 3, 2020
    Publication date: May 7, 2020
    Inventors: Seung-Won LEE, Eun-Kyung PARK, Won-Gu CHOI, Jang-Soon KIM, Sang-Hwan KIM, Tae-Yi CHOI
  • Publication number: 20200030845
    Abstract: The present invention relates to a cured product having excellent stain resistance and low gloss, a method of manufacturing the same, and an interior material including the cured product. The cured product according to the present invention includes, along with an acrylic oligomer, an oligomer having a functional group containing silicon (Si) and an oligomer having a functional group containing fluorine (F), and thus, has excellent stain resistance and can implement a micro-folded structure on a surface thereof through extreme ultraviolet rays to be used during curing, thereby being capable of realizing low gloss without a matting agent.
    Type: Application
    Filed: August 21, 2018
    Publication date: January 30, 2020
    Inventors: Ji Yeon SEO, Heon Jo KIM, Min Kyung PARK, Tae Yi CHOI
  • Publication number: 20200024439
    Abstract: The present invention relates to a cured product having excellent stain resistance and low gloss, a method of manufacturing the same, and an interior material including the cured product. The cured product according to the present invention is formed by sequentially applying light in different specific wavelength ranges to a composition to cure the composition, thereby being capable of realizing a low gloss of 9 or less, based on a 60 degree gloss meter, without use of a matting agent and excellent stain resistance and exhibiting excellent abrasion resistance. Accordingly, the cured product may be usefully used as an interior material such as a flooring material.
    Type: Application
    Filed: May 18, 2018
    Publication date: January 23, 2020
    Inventors: Ji Yeon SEO, Heon Jo KIM, Tae Yi CHOI
  • Patent number: 10364380
    Abstract: The present invention provides an adhesive composition for optical use, which includes rubber and may be chemically cross-linked through an appropriate curing process, and as a result, may secure excellent long-term durability, water vapor transmission resistance, and chemical resistance, and includes an isobutylene-isoprene rubber having an acrylic acid ester-based functional group in a main chain thereof, a photoinitiator, and a tackifier in order to provide optical characteristics sufficient to be used for optical use. The present invention provides a method for preparing the adhesive composition for optical use, and it is possible to obtain the adhesive composition for optical use, which includes a chemically cross-linkable rubber by the method. Further, the present invention provides an adhesive film for optical use, and excellent long-term durability and optical characteristics may be implemented by applying the adhesive film for optical use to a wide range of electronic devices.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: July 30, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Kwang Su Seo, Eun Kyung Park, Seung Won Lee, Jang Soon Kim, Won Gu Choi, Tae Yi Choi
  • Publication number: 20190112510
    Abstract: Provided is an adhesive composition for an optical use, including: a first isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 100,000 g/mol to 1,000,000 g/mol; and a second isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 5,000 g/mol to 100,000 g/mol, in which the first isobutylene-isoprene-based rubber and the second isobutylene-isoprene-based rubber each include a hydroxy group. Further, provided is an adhesive layer including a thermally cured product of the adhesive composition for optical use.
    Type: Application
    Filed: April 4, 2017
    Publication date: April 18, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Kwang Su Seo, Eun Kyung Park, Seung Won Lee, Jang Soon Kim, Tae Yi Choi
  • Publication number: 20180148613
    Abstract: The present invention relates to a rubber-based adhesive composition and a rubber-based adhesive using the same, the composition including: a rubber-based resin; and a rosin-based resin having at least one hydrophilic group.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 31, 2018
    Inventors: Seung-Won LEE, Eun-Kyung PARK, Won-Gu CHOI, Jang-Soon KIM, Sang-Hwan KIM, Tae-Yi CHOI
  • Patent number: 9976059
    Abstract: The present invention relates to an adhesive composition for optical use, which is applied to optical devices or display devices and thus may exhibit excellent adhesion performance while exhibiting a high barrier performance based on a low water vapor transmission rate, and may implement both excellent optical characteristics and durability, and specifically, provides an adhesive composition for optical use, the adhesive composition including: a thermally curable rubber including an isobutylene-isoprene rubber having a carboxyl group and an isobutylene-isoprene rubber having a hydroxy group; and a thermal crosslinking agent. Further, the present invention provides an adhesive film for optical use, including an adhesive layer including photocured products of the adhesive composition for optical use.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: May 22, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Kwang Su Seo, Eun Kyung Park, Seung Won Lee, Jang Soon Kim, Won Gu Choi, Tae Yi Choi
  • Publication number: 20180127624
    Abstract: The present invention provides an adhesive tape including: a base material; and an adhesive sheet provided on one surface of the base material and including cured products of an aqueous acrylic adhesive composition, in which the adhesive sheet has a porous structure including pores, and wherein the adhesive tape has a water vapor transmission rate of 3,000 g/m2·day or more and 5,000 g/m2·day or less under conditions of a temperature of 40° C. and a relative humidity of 20%, and a method for manufacturing the same.
    Type: Application
    Filed: February 23, 2017
    Publication date: May 10, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jeong-In Han, Won-Gu Choi, Jang-Soon Kim, Tae-Yi Choi, Ji-Yeon Yang, Dan-A Kim, Seo-Hyeon Park
  • Publication number: 20180057715
    Abstract: The present invention relates to an optical adhesive composition including: a thermosetting component including an isoprene-based rubber containing a carboxyl group, and a thermal curing agent; and a photo-curable component including an acrylic acid ester-based monomer, and a photoinitiator, in order to exhibit high barrier performance on the basis of a low water vapor transmission rate, and simultaneously, exhibit excellent adhesive performance by being applied to an optical device or a display device. In addition, the present invention provides an optical adhesive film including an adhesive layer including a photo-cured product of the optical adhesive composition, thereby obtaining advantages of ensuring an excellent cutting property and an excellent handling property, and improving a step difference absorbency.
    Type: Application
    Filed: March 22, 2016
    Publication date: March 1, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Seung-Won Lee, Eun-Kyung Park, Tae-Yi Choi, Won-Gu Choi, Jang-Soon Kim
  • Publication number: 20180010019
    Abstract: Provided are: an acrylic adhesive sheet having a porous structure including a plurality of pores and having a water vapor transmission rate of 2,000 g/m2·24 h to 3,500 g/m2·24 h at 24° C. and 25% RH, and a porosity of 10% to 60%; and a medical adhesive tape including the same.
    Type: Application
    Filed: December 22, 2015
    Publication date: January 11, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jeong-In Han, Dan-A Kim, Jang-Soon Kim, Seong-Hoon Yue, Tae-Yi Choi, Ji-Yeon Yang
  • Publication number: 20170327714
    Abstract: The present invention relates to an adhesive composition for optical use, which is applied to optical devices or display devices and thus may exhibit excellent adhesion performance while exhibiting a high barrier performance based on a low water vapor transmission rate, and may implement both excellent optical characteristics and durability, and specifically, provides an adhesive composition for optical use, the adhesive composition including: a thermally curable rubber including an isobutylene-isoprene rubber having a carboxyl group and an isobutylene-isoprene rubber having a hydroxy group; and a thermal crosslinking agent. Further, the present invention provides an adhesive film for optical use, including an adhesive layer including photocured products of the adhesive composition for optical use.
    Type: Application
    Filed: November 4, 2016
    Publication date: November 16, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Kwang Su Seo, Eun Kyung Park, Seung Won Lee, Jang Soon Kim, Won Gu Choi, Tae Yi Choi
  • Publication number: 20170313917
    Abstract: The present invention provides an adhesive composition for optical use, which includes rubber and may be chemically cross-linked through an appropriate curing process, and as a result, may secure excellent long-term durability, water vapor transmission resistance, and chemical resistance, and includes an isobutylene-isoprene rubber having an acrylic acid ester-based functional group in a main chain thereof, a photoinitiator, and a tackifier in order to provide optical characteristics sufficient to be used for optical use. The present invention provides a method for preparing the adhesive composition for optical use, and it is possible to obtain the adhesive composition for optical use, which includes a chemically cross-linkable rubber by the method. Further, the present invention provides an adhesive film for optical use, and excellent long-term durability and optical characteristics may be implemented by applying the adhesive film for optical use to a wide range of electronic devices.
    Type: Application
    Filed: November 4, 2016
    Publication date: November 2, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Kwang Su Seo, Eun Kyung Park, Seung Won Lee, Jang Soon Kim, Won Gu Choi, Tae Yi Choi
  • Patent number: 9708511
    Abstract: The present invention relates to an adhesive composition including: a butyl-based rubber; and a tackifier having a softening point of 90° C. or more.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: July 18, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Tae-Yi Choi, Eun-Kyung Park, Ju-Hyeon Paeng, Jang-Soon Kim