Patents by Inventor Bu Yeon Hwang

Bu Yeon Hwang 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).

  • Composition comprising recycled resin and ethylene-acrylic acid copolymer and preparation method thereof
    Patent number: 12152171
    Abstract: Provided is an adhesive composition including an ethylene-acrylic acid copolymer and a post-consumer recycled resin (PCR), wherein the ethylene-acrylic acid copolymer has a melt index (190° C., 2.16 kg, ASTM D1238) of 1 to 30 g/10 min, and the PCR has a melt index (190° C., 2.16 kg, ASTM D1238) of 1 to 10 g/10 min, and a preparation method thereof, which can have excellent processability, low gel content, and excellent adhesive strength by easily distinguishing a certain level of PCR resin by a capillary rheometer and mixing the PCR resin with an ethylene-acrylic acid copolymer.
    Type: Grant
    Filed: July 19, 2023
    Date of Patent: November 26, 2024
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Bu Yeon Hwang, Sang Ha Son, Dong Hyun Woo, Ji Hyeon Choi
  • Composition Comprising Recycled Resin and Ethylene-Acrylic Acid Copolymer and Preparation Method Thereof
    Publication number: 20240199926
    Abstract: Provided is an adhesive composition including an ethylene-acrylic acid copolymer and a post-consumer recycled resin (PCR), wherein the ethylene-acrylic acid copolymer has a melt index (190° C., 2.16 kg, ASTM D1238) of 1 to 30 g/10 min, and the PCR has a melt index (190° C., 2.16 kg, ASTM D1238) of 1 to 10 g/10 min, and a preparation method thereof, which can have excellent processability, low gel content, and excellent adhesive strength by easily distinguishing a certain level of PCR resin by a capillary rheometer and mixing the PCR resin with an ethylene-acrylic acid copolymer.
    Type: Application
    Filed: July 19, 2023
    Publication date: June 20, 2024
    Inventors: Bu Yeon Hwang, Sang Ha Son, Dong Hyun Woo, Ji Hyeon Choi
  • Composition for coating a paper, method for production thereof and coated paper
    Patent number: 11932993
    Abstract: A paper coating composition, methods for making the same, and a coated paper. The paper coating composition comprises a solvent, an ethylene-(meth)acrylic acid copolymer, a basic compound, and a polycarbodiimide-based curing agent, wherein the polycarbodiimide-based curing agent has a carbodiimide group equivalent of about 150 to about 350. The coating of the coated paper likewise comprises an ethylene-(meth)acrylic acid copolymer crosslinked by N-acylurea groups.
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: March 19, 2024
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Dong Hyun Woo, Sang Ha Son, Ji Hyeon Choi, Bu Yeon Hwang