Search Results - taeheon+lee

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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: 5/18/2022   |   Inventor(s): Dong-Chul Pyun, Robert Norwood, Jon Njardarson, Richard Glass, Taeheon Lee, Chisom Olikagu, Kyung Seok Kang
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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
Natural Rubber Vulcanization using Chalcogenide Hybrid Inorganic/Organic Polymers
A new high sulfur content polymer has been developed for tire vulcanization. This polymer may improve chemical compatibility, mixing, and result in more efficient crosslinking. Background: Sulfur, the traditional vulcanizing agent for tire rubber, is largely insoluble in rubber precursors and requires high temperatures to form crosslinks. Even with...
Published: 3/2/2022   |   Inventor(s): Dong-Chul Pyun, Taeheon Lee, Kyle Carothers
Keywords(s):  
Category(s): Technology Classifications > Materials > Polymers, Technology Classifications > Materials > Chemicals
Novel High Refractive Index and Abbie Value Polymers for Advanced Lower Cost Optical Eyewear
Copolymerization of chalcogenide halides with widely available unsaturated monomers is used to create advanced polymer materials for consumer plastic optics, consumer eye wear, and smart phone plastic optics. Background: Sulfenyl chlorides are a widely known but largely ignored class of sulfur compounds that are highly reactive toward nucleophiles...
Published: 9/15/2021   |   Inventor(s): Dong-Chul Pyun, Robert Norwood, Jon Njardarson, Richard Glass, Taeheon Lee, Chisom Olikagu, Kyle Carothers
Keywords(s):  
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Lens & System Design, Technology Classifications > Imaging & Optics > Materials & Fabrication, Technology Classifications > Imaging & Optics > Materials & Fabrication > Optical, EO & MO, Technology Classifications > Imaging & Optics > Ophthalmology, Technology Classifications > Materials > Polymers
Polyols from Elemental Sulfur and Elastomeric Polyurethanes
This invention consists of novel sulfur-based polyol polymers which are highly soluble in polar organic solvents and are made in a single chemical step from elemental sulfur. This chemistry enables new polyurethane compositions from sulfur comonomers. The method of synthesis can be easily scaled to large-scale production, and can be processed into water...
Published: 3/27/2020   |   Inventor(s): Kyungseok Kang, Dong-Chul (Jeffrey) Pyun, Taeheon Lee
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Category(s): Technology Classifications > Energy, Cleantech & Environmental > Petrochemical, Technology Classifications > Materials > Polymers, Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Coatings