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185 Results for 'Materials & Chemicals'
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Technology
Highly Foamed Plastic Parts Are Stronger and Cheaper to Produce
Microcellular injection molding produces lightweight, dimensionally stable plastic components using fewer raw materials than standard techniques.
The process, also known as ‘microcellular foami...
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Lih-Sheng Turng, Xiaofei Sun | P130051US01
Technology
Improved Disulfide-Bond Reducing Agents
Disulfide bonds between cysteine residues are the most common crosslinking agents in proteins. Reducing these bonds is an ordinary procedure in biochemistry and biotechnology. The most commonly used r...
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Ronald Raines, John Lukesh | P110330US02
Technology
New Conductive Polymers for Lithium Ion Batteries
Batteries can be classified as primary (nonreusable) or secondary (rechargeable). The demand for rechargeable batteries of high energy density and specific energy has surged along with portable electr...
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Mahesh Mahanthappa, Ryan Weber | P120049US02
Technology
Biodegradable Poly(Vinyl Ester) Block Copolymers and Related Poly(Vinyl Alcohol) Surfactants
Common biodegradable polymers such as poly(lactide) and poly (3-hydroxyalkanaoates) are derived from relatively expensive chemical feedstocks and have low melt stability. This presents a challenge for...
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Mahesh Mahanthappa, Corinne Lipscomb, Milton Repollet-Pedrosa | P100170US02
Technology
Degradable Polycations Derived from Amino Acid Vinyl Esters
Degradable polyelectrolytes are useful materials for a variety of biological applications, from implant coatings and immunostimulants to therapeutic and gene delivery. Many of these applications rely ...
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Mahesh Mahanthappa, Corinne Lipscomb, Glen Thomas | P120121US02
Technology
Selective Conversion of Lignin into Simple Aromatic Compounds
Lignin is a major component of non-edible biomass (15-30 percent by weight; 40 percent by energy). It is a cheap byproduct of pulp and biofuel production and is one of the few naturally occurring sour...
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Shannon Stahl, Alireza Rahimi | P130104US01
Technology
Manufacturing Polymer Micropellets
Polymer-based micropellets can be formed having diameters smaller than 50 microns. The miniscule particles are vital to a number of processes like laser sintering—used to build rapid prototypes ...
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Tim Osswald, Martin Launhardt | P100314US02
Technology
Controlling the Size and Shape of Polymer Micropellets
Polymer-based pellets are utilized in plastics manufacturing. In particular, very small micropellets and powders are in special demand for processes like selective laser sintering (SLS), which require...
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Tim Osswald, William Aquite | P130088US01
Technology
Crosslinkable Gemini Dicarboxylate Surfactant LLCs and Their Membranes
Aqueous lyotropic liquid crystal (LLC) assemblies are useful for highly selective chemical separations, such as water desalination and selective ion-transporting membranes. LLCs are formed in water wh...
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Mahesh Mahanthappa, Gregory Sorenson | P120048US02
Technology
Superior Nanocomposite Welding Wire
Advanced metal alloys with high strength and fracture toughness are used in an increasing number of applications. However, some metal alloys like Al-Cu have been underutilized due to poor weldability....
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Xiaochun Li, Hongseok Choi, David Weiss | P130003US01
Technology
Generating Medical Isotopes with Safer Vessel and Materials
Medical isotopes are valuable healthcare tools for patient imaging and disease treatment. Yet most radioisotopes used in medicine are produced in nuclear reactors, which are complex, generate high vol...
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Gregory Piefer, Thad Heltemes, Ross Radel, Eric Van Abel | P120047US01
Technology
Easier, More Flexible Synthesis of Therapeutic and Promising Compounds
Many pharmaceuticals and other biologically active molecules contain chemical sequences called triads that are challenging to prepare in the laboratory. Specifically, triads are three or more contiguo...
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Jennifer Schomaker, Luke Boralsky, John Hershberger, Jared Rigoli, Christopher Adams | P110299US02
Technology
Improved Immiscible Alloy Formation with Stabilizing Nanoparticles
Immiscible alloys are composed of materials that meld together above a certain temperature but become unstable and separate as the solution cools. For example, elements like bismuth or tin may coagula...
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Xiaochun Li, Lianyi Chen, Jiaquan Xu | P120305US01
Technology
Streamlined Scheduling for Large-Scale Chemical Production
In chemical manufacturing, a production system may receive and process raw materials in multiple steps, with each step or task associated with a certain procedure or tool. Ideally, each step is schedu...
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Christos Maravelias, Sara Velez, Arul Sundaramoorthy | P120218US01
Technology
Low-Temperature, Corrosion-Resistant Integrated Metal Coatings to Improve Efficiency of Coal Plants
In 2008, coal-fired power plants generated 49 percent of electricity consumed in the U.S., more than twice that of any other energy resource. Coal is an important fossil fuel because world coal r...
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John Perepezko, Ridwan Sakidja | P08213US
Technology
More Efficient Production of Polymer Chemical from Biomass Glucose
Beyond its fuel potential, biomass is poised to supplant nonrenewable sources in the production of important building block chemicals. One such intermediary is 5-hydroxymethylfurfural (HMF), a primary...
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James Dumesic, Yomaira Pagan-Torres, Brent Shanks, Tianfu Wang | P120054US01
Technology
Method for Renewably Sourced Diones as Fossil Chemical Alternative in Industry
Attention and investment increasingly look to renewable resources like sugars as foundations for the practical, chemical needs of industry. Diones are such compounds, vital to many processes includin...
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James Dumesic, Mei Chia | P110282US02
Technology
Method to Produce Sorbic Acid and Pentadiene from Renewable Biostock
Sorbic acid has been used extensively as a preservative in a vast array of food. The benefits of sorbates as food preservatives are two-fold: sorbates inhibit a wide spectrum of bacteria, yeasts and m...
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James Dumesic, Mei Chia | P100264US01
Technology
Improved Method for Incorporating and Uniformly Dispersing Nanoparticles into Metal-Based Materials
A nanocomposite is a reinforcing material that can be added to conventional materials to make them lightweight and ductile while also increasing their strength. Nanocomposites having high strength-to-...
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Xiaochun Li, Hongseok Choi, Lianyi Chen, Jiaquan Xu | P120090US01
Technology
Production of Nanoparticle Reinforced Metal-Matrix Nanocomposites from Master Nanocomposites
A nanocomposite includes a matrix material to which nanoparticles (with a size of about 1.0 nm to a few hundreds of nanometers) have been added to improve a particular property of the material. For ex...
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Xiaochun Li, Michael DeCicco, Dake Wang, Hongseok Choi | P110276US01
Technology
Improved Photocatalyst for Reducing Small Molecules
The reduction of small molecules such as nitrogen and carbon dioxide is extremely difficult because one-electron reduction processes often involve high-energy intermediates. Nitrogen reduction usually...
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Robert Hamers, Di Zhu, Nigel Becknell | P120070US01
Technology
Oxidation-Resistant Coatings for Ultra-High Temperature Ceramic-Based Materials
Ultra-high temperature ceramics (UHTCs), SiC-based ceramic matrix composites (CMCs) and cermets are all materials that can be used in high temperature environments; however, these materials need prote...
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John Perepezko, Ridwan Sakidja, Patrick Ritt | P110178US01
Technology
Diazaphosphacycles, Which Are Used to Catalyze Commercially Important Reactions, and Methods of Synthesis
Phosphines have many commercial and industrial uses as attachments to rare earth metal catalysts, including specialized uses in asymmetric hydrogenation and other catalytic transformations. Asymmetric...
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Clark Landis, Wiechang Jin, Jonathan Owen, Thomas Clark, Ryan Nelson | P03130US
Technology
Improved Infrared-Responsive Hydrogel for Use in Microfluidics and Optics
Responsive hydrogels can respond to external stimuli such as temperature, pH, photons and antigens, which makes them applicable as functional materials in drug/gene delivery devices, microlenses and s...
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Hongrui Jiang, Chi-Wei Lo, Difeng Zhu | P120025US01
Technology
Synthesis of Endoperoxide from a Diene and Molecular Oxygen in the Presence of a Photocatalyst
Endoperoxides are prominent structural features of several natural products with potent activity against malaria and various cancer cell lines. However, they are difficult to synthesize. The most stra...
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Tehshik Yoon, Michael Ischay, Jonathan Parrish | P100348US01