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Sunscreens Based on Phenolic-Formaldehyde Particles
Sun-protective polymeric particles using a micro emulsion polymerization by nucleation approach have been developed by researchers at the University of Arizona. The resulting resorcinol-formaldehyde is red to brown in color with strong absorption of UVA and UVB radiation, making it an ideal material for sunscreen. Resorcinol-formaldehyde has been widely...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Robb Bagge, Nanayakkarawasan Pallage Nanayakkara
Keywords(s): nano-particles
Category(s): Technology Classifications > Healthcare Portfolios > Dermatology
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Sunscreens Prepared from Polydopamine and Poly (dopamine-co-cafeic acid)
This invention is synthetic eumelanin particles prepared by polymerization of dopamine that can be dispersed in water, glycerol or oil.
Background:
Sunscreen products in the market today are typically made of potentially harmful chemicals, including avobenzone, which releases cancer-causing free radicals, and oxybenzone, which has estrogenic properties...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Robb Bagge, Nanayakkarawasan Pallage Nanayakkara
Keywords(s): nano-particles
Category(s): Technology Classifications > Healthcare Portfolios > Dermatology
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New Sunscreens Based on Particles Prepared from Higher Aldehydes and Phenols
This invention consists of particles that can be used as sunscreens prepared by the copolymerization of phenols with aromatic and conjugated aldehydes like cinnamaldehyde or benzaldehyde. These particles made of bio-based materials can be dispersed in liquid and function as thermosets for sun-blocking purposes.
Background:
Sunscreen products in the...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Robb Bagge, Nanayakkarawasan Pallage Nanayakkara
Keywords(s): nanoparticles
Category(s): Technology Classifications > Healthcare Portfolios > Dermatology
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Tetrazines as Chemical Blowing and Crosslinking Agents in the Preparation of Organosilicon Foams
This invention incorporates the reaction of tetrazine and alkene/alkyne substituted polysiloxanes through the foaming process to develop a product similar to polyurethane foam. This new solution is much less toxic than polyurethane, and has the flexibility of rubber but with added strength due to a silicon-oxide network.
Background:
Polyurethane...
Published: 8/1/2024
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Inventor(s): Robb Bagge, Douglas Loy
Keywords(s):
Category(s): Technology Classifications > Materials > Polymers
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Dihydropyridazine Antioxidant Sunscreen that Signals Depletion with Bleaching of Fluorescence
This invention is a UVA and UVB absorbent with dihydropyridazine purposed to act as a sunscreen antioxidant.
Background:
Commercial sunscreens, which aim to prevent the development of skin cancers and melanoma, compete to minimize UV damage while allowing user to apply on either dry or wet skin. Unfortunately, it is difficult to effectively gauge...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Robb Bagge
Keywords(s):
Category(s): Technology Classifications > Materials, Technology Classifications > Healthcare Portfolios > Dermatology
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Particulate and Film Polymeric Dihydropyridazines as Sunscreens with Inherent Antioxidant Properties
This invention is a polymeric sunscreen that can be applied either as a film or as particles to be suspended in either water or oil.
Background:
Both UVB and UVA wavelengths penetrate the atmosphere, inducing skin cancers, eye damage and aging if not properly protected or treated. Common commercial sunscreens can block around 93% of UVB and UVA rays,...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Wenmo Sun, Robb Bagge, Nanayakkarawasan Pallage Nanayakkara
Keywords(s):
Category(s): Technology Classifications > Materials, Technology Classifications > Healthcare Portfolios > Dermatology, Technology Classifications > Materials > Coatings, Technology Classifications > Materials > Polymers
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Polymer Foams from 1,2,4,5-Tetrazine and Polydienes
This invention is an optimized synthesis of parent 1,2,4,5 tetrazine and polydienes, which is capable of creating a solid polymeric foam with as little as 5 mol% tetrazine.
Background:
Polymer foams are found virtually everywhere in our society and are used in a variety of applications. Said foams can be produced through different methods such like...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Robb Bagge, Wenmo Sun
Keywords(s):
Category(s): Technology Classifications > Materials
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Dihydrotetrazine Antioxidants and Free Radical Reaction Inhibitors
This invention is the use of dihydrotetrazines as antioxidants to eliminate free radicals. Dihydrotetrazines were found to be superior to dihydropyridazines or hindered phenols in inhibiting free radical polymerization.
Background:
Dihydrotetrazines donate up to two hydrogen atoms to terminate radical chain or oxidation reactions. These compounds...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Robb Bagge, Wenmo Sun
Keywords(s):
Category(s): Technology Classifications > Life Sciences
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Dihydropyridazine Antioxidants
This invention is the use of dihydropyridazines as antioxidants to remove free radicals, prevent degradation of peroxides, block ultraviolet light, and limit ionizing radiation. 1,4-dihydropyridazines with any number of substituents at the 3, 6- positions or 4,5- positions can generate a variety of antioxidants.
Background:
The main reason for the...
Published: 8/1/2024
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Inventor(s): Douglas Loy, Robb Bagge
Keywords(s):
Category(s): Technology Classifications > Life Sciences, Technology Classifications > Materials
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The Method of Formation of a Class of Oxidation Resistant Linear Polymers and Networked Foams through the Inverse Electron Demand (IEDA) Reaction Between Substituted Tetrazines with Polyenes and Oligoenes
This invention is a chemical synthesis method that allows for a greener, safer formation of polymeric thermosetting and thermoplastic foams, adhesives, films and electrofluorochromic devices using non-isocyanate chemistry.
Background:
As of January 2015, the US Environmental Protection Agency (EPA) has taken action to protect consumers from new uses...
Published: 8/1/2024
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Inventor(s): Robb Bagge, Douglas Loy
Keywords(s):
Category(s): Technology Classifications > Research Tools
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