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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
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Inventor(s): Dong-Chul Pyun, Taeheon Lee, Kyung-Seok Kang, Krishnan Iyer
Keywords(s):
Category(s): Technology Classifications > Materials > Polymers, Technology Classifications > Materials > Processing
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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
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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
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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
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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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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
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Inventor(s): Dong-Chul Pyun, Kyung-Seok Kang
Keywords(s):
Category(s): Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Coatings, Technology Classifications > Materials > Polymers
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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: 3/12/2024
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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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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: 3/12/2024
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Inventor(s): Kyung-Seok Kang, Dong-Chul Pyun, Taeheon Lee
Keywords(s):
Category(s): Technology Classifications > Energy, Cleantech & Environmental > Petrochemical, Technology Classifications > Materials > Polymers, Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Coatings
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Sulfur Based Polyols for Polyurethanes and Novel Polymeric Materials, including Nonhalogenated Flame Retardants
University of Arizona researchers developed flame retardant sulfur-based polymers that are highly soluble in polar solvents and are made in a single chemical step from elemental sulfur, a low-value byproduct of oil refining and gas processing. This chemistry enables new polyurethane compositions, including non-halogenated flame retardants. The method...
Published: 3/12/2024
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Inventor(s): Kyung-Seok Kang, Dong-Chul Pyun
Keywords(s):
Category(s): Technology Classifications > Energy, Cleantech & Environmental > Petrochemical, Technology Classifications > Materials > Chemicals, Technology Classifications > Materials > Polymers
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