Search Results - dong-chul+pyun

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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
New Polysulfide Materials derived from Sulfur Monochloride for Flame Retardant Polymers
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, Kyung-Seok Kang
Keywords(s):  
Category(s): Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Coatings, Technology Classifications > Materials > Polymers
Consumer Optics with Low Cost Polymers
This invention describes a range of low-cost polymer compositions and method of making for high index, high Abbie number consumer optics. Background: The consumer eyewear global market estimated at greater than $100 billion. Current optical polymer technology revolves around well-established thermoplastic or thermoset polymers, including polycarbonates...
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 > Polymers, Technology Classifications > Imaging & Optics > Lens & System Design, Technology Classifications > Imaging & Optics > Ophthalmology, Technology Classifications > Imaging & Optics > Optical Fab / Metrology
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