Search Results - dong-chul+pyun

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Photopolymerization of Disulfide Methacrylate Resin
This technology introduces a disulfide methacrylate resin designed for high-performance optical applications. Utilizing a novel photopolymerization process, this resin offers enhanced optical properties, such as a high refractive index and low birefringence, making it suitable for precision optics, 3D printing, and advanced manufacturing. The material’s...
Published: 12/16/2024   |   Inventor(s): Dong-Chul Pyun, Chisom Olikagu, Jon Njardarson
Keywords(s):  
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Imaging & Optics > Lens & System Design, Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Materials > Polymers
Ga₂O₃ Vertical MOSFET for Enhanced Power Management
A vertical trench MOSFET using a unique in-situ Mg-doped current blocking layer to enable high-voltage operation with enhanced efficiency and robustness in power electronic devices. Background: This technology addresses the need for high-voltage power devices suitable for grid and traction applications, overcoming the limitations of traditional silicon-based...
Published: 1/3/2025   |   Inventor(s): Uttam Singisetti, Hongping Zhao, Sudipto Saha, Lingyu Meng, Dong Yu
Keywords(s): Featured, Semiconductor and Microprocessing, Technologies
Category(s): Campus > University at Buffalo, Technology Classifications > Energy, Technology Classifications > Electronics
Low Cost Solution Processing Disulfide Glass Prepolymers from Sulfenyl Chlorides
A novel soluble prepolymer has been developed through the reaction of sulfur monochloride (S2Cl2) with 1,3,5-triallylisocyanurate (TIC). This technology is a novel method which yields a highly functional, low-cost branched polymer suitable for various thin film applications, including high refractive index coatings, transparent coatings, negative tone...
Published: 7/25/2024   |   Inventor(s): Dong-Chul Pyun, Jake Molineux
Keywords(s):  
Category(s): Technology Classifications > Materials > Processing, Technology Classifications > Materials > Coatings, Technology Classifications > Materials > Polymers
Production of Vulcanized Rubber using Organopolysulfide Crosslinking Agents Derived from Elemental Sulfur
Methods of vulcanization using a high content sulfur polymer, instead of elemental sulfur, have been developed for tire rubber production. The resulting high sulfur content polymers are referred to as Chalcogenide Hybrid Inorganic/Organic Polymers (CHIP) materials have improved polymer compatibility and efficient crosslinking. Furthermore, this technology...
Published: 3/12/2024   |   Inventor(s): Dong-Chul Pyun, Taeheon Lee, Kyung-Seok Kang, Krishnan Iyer
Keywords(s):  
Category(s): Technology Classifications > Materials > Polymers, Technology Classifications > Materials > Processing
Synthesis of New Deuterated Organic Comonomers and Deuterated High Sulfur Content Polymers for Optics and Photonics
This technology is new molecular design approach to prepare high refractive index polymers with enhanced medium wavelength infrared (MWIR) and/or long wavelength infrared (LWIR) transparency that are prepared from reacting with elemental sulfur with deuterated comonomers. The polymers described herein are chalcogenide hybrid inorganic organic polymers...
Published: 10/19/2024   |   Inventor(s): Dong-Chul Pyun, Robert Norwood, Jon Njardarson, Haziq Qureshi, Tristan Kleine, Kyle Carothers
Keywords(s):  
Category(s): Technology Classifications > Materials > Polymers, Technology Classifications > Imaging & Optics > Sensors and Detection
Dithiophosphoric Acid Monomers for Polymer Synthesis and Functionalization
This technology is a new polymer chemistry composed of –SH-P=S-function groups which can be made from elemental sulfur, white phosphorus, and cheap alcohols, providing a route for non-petroleum-based polymers from widely available raw materials. Functionalized polymers of a reaction product of a polymer including one or more olefins and a dithiophosphoric...
Published: 3/12/2024   |   Inventor(s): Dong-Chul Pyun, Jianhua Bao, Jon Njardarson
Keywords(s):  
Category(s): Technology Classifications > Energy, Cleantech & Environmental > Petrochemical, Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Polymers
Synthesis of New Polysulfide Materials derived from Sulfur Monochloride with for Optical Material Applications
This invention describes a range of low-cost polymer compositions and method of making for high index, high Abbe number consumer optics. This process improves upon the synthesis of thermoplastic and thermoset polymers, achieving both high molecular weight in linear thermoplastics and highly crosslinked thermosets. It was also found that these materials...
Published: 3/12/2024   |   Inventor(s): Dong-Chul Pyun, Robert Norwood, Jon Njardarson, Kyung-Seok Kang
Keywords(s):  
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Imaging & Optics > Lens & System Design, Technology Classifications > Imaging & Optics > Materials & Fabrication > Optical, EO & MO, Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Polymers
Functionalization of Soluble Guayule Resins using Functional Dithiophosphoric Acids
Functionalized polymers of a reaction product of a polymer including one or more olefins and a dithiophosphoric acid compound can provide a wide range of olefinic polymers in bulk-neat conditions or in solution via eletrophilic addition processes. Such new compositions provide a wide range of new functional polymers via an inexpensive polymer production...
Published: 3/12/2024   |   Inventor(s): Dong-Chul Pyun, Jon Njardarson
Keywords(s):  
Category(s): Technology Classifications, Technology Classifications > Energy, Cleantech & Environmental > Low Carbon, Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Polymers, Technology Classifications > Materials > Processing, Technology Classifications > Materials > Biomaterials
Functionalization of Soluble Polydienes and Polyisoprenes using Dithiophosphoric Acids
Researchers at the University of Arizona have found that functionalized polymers of a reaction product of a polymer including one or more olefins and a dithiophosphoric acid compound can provide a wide range of olefinic polymers in bulk-neat conditions or in solution via eletrophilic addition processes. Suitable olefins include polybutadienes, polyisoprenes,...
Published: 3/12/2024   |   Inventor(s): Dong-Chul Pyun, Jon Njardarson
Keywords(s):  
Category(s): Technology Classifications > Imaging & Optics > Materials & Fabrication > Optical, EO & MO, Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Coatings, Technology Classifications > Materials > Polymers
Low Cost Flame Retardant Polymers from Low Cost Olefinic Comonomers
This technology is an approach to using sulfenyl-halide polymerization with olefinic comonomers to prepare a new class of intrinsically flame-retardant polymers for the production of a wide range of thermoplastics, thermoplastic elastomers, and thermoset materials. Materials prepared with this technology have afforded a V0 UL-94V flame retardancy rating...
Published: 3/12/2024   |   Inventor(s): Dong-Chul Pyun, Robert Norwood, Jon Njardarson, Richard Glass, Taeheon Lee, Chisom Olikagu, Kyung-Seok Kang
Keywords(s):  
Category(s): Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Coatings, Technology Classifications > Materials > Polymers
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