Parelec, Inc.

Pchem Associates, Inc.

Mobil Oil Corporation

Other

Dowa Electronics Materials Co., Ltd.

Gregory A Jablonski

Michael A Mastropietro

David O Marler

Paul Harriman Kydd

David L Richard

Kenneth J Del Rossi

Wieslaw J Roth

Charles T Kresge

Hye Kyung Timken

Kimitaka Sato

Guenter H Kuehl

Hiromasa Miyoshi

Hidefumi Fujita

Brenda H Rose

Gayatri S Rav

Paul A Howley

Brian F Conaghan

Isabel Mendoza

L Deane Rollmann

Christopher J Wargo

A silver nanoparticle composition is provided which is possible to be sintered through sintering at a low temperature in a short time and to form silver electro conductive film and wiring which is favorable for adhesion to a substrate and low in resistance, and articles using the same are provided. The silver nanoparticle composition is provided, wherein a main component of a solvent is water, a pH of the composition is within a range of 5.3 to 8.0, a silver nanoparticle included in the composition is protected by an organic acid or a derivative thereof, and the content of the organic acid or the derivative thereof with respect to silver is 2 to 20% by mass.

Low-temperature sintered silver nanoparticle composition and electronic articles formed using the same

An analytical substrate for amplifying Raman signals by a factor greater than 10,000, or by a factor less than 1,000,000. The analytical substrate is fabricated by depositing a film on the substrate and heating the substrate to a temperature less than 100 degrees Celsius for a period of time less than 30 seconds. The film can comprise a metallic nanoparticle dispersion that can further comprise a population of metallic nanoparticles. In some instances, the metallic nanoparticles have an average cross-sectional dimension in a range of about 1 nm to about 100 nm. In other instances each nanoparticle comprises at least one ligand bound to a surface of the nanoparticle, where the ligand comprises a heteroatom head group bound to the nanoparticle surface and a tail bound to the heteroatom head group.

Methods for fabricating analytical substrates using metallic nanoparticles

A process is described for the synthesis of metallic nanoparticles by chemical reduction of metal salts in the presence of organic ligands capable of binding to the metal particle surfaces and stabilizing them against agglomeration. The resultant nanoparticles or dispersions of the particles can be sintered into highly conductive films or traces at temperatures as low as 80&#xb0; C. in 10 minutes or less.

Synthesis of metallic nanoparticle dispersions capable of sintering at low temperatures

Disclosed are cohesive metallic structures, comprising sintered metallic nanoparticles, suitable for shielding against electromagnetic interference and radio frequency interference. Also disclosed are methods for forming such structures. Devices for shielding electromagnetic radiation and methods of shielding electromagnetic radiation using such devices are also provided.

Shielding based on metallic nanoparticle compositions and devices and methods thereof

Conductive ink compositions which can be cured to highly conductive metal traces by means of 'chemical welding' include adhesion promoting additives for providing improved adhesion of the compositions to various substrates.

High conductivity inks with improved adhesion

A composition of matter having a metal powder or powders of specified characteristics in a Reactive Organic Medium (ROM). These compositions can be applied by any convenient printing process to produce patterns of electrical conductors on temperature-sensitive electronic substrates. The pattern can be thermally cured in seconds to form pure metal conductors at a temperature low enough to avoid damaging the substrate.

Low temperature method and composition for producing electrical conductors

A composition of matter having a metal powder or powders of specified characteristics in a Reactive Organic Medium (TOM). These compositions can be applied by any convenient printing process to produce patterns of electrical conductors on temperature-sensitive electronic substrates. The patterns can be thermally cured in seconds to form pure metal conductors at a temperature low enough to avoid damaging the substrate.

Low temperature method and compositions for producing electrical conductors

PARMOD.TM. materials comprised of a metal powder or metal powder mixture of specified characteristics and a Reactive Organic Medium, are easily printed or deposited on electronic components, such as a Printed Wiring Board substrate, and cured at low temperatures to form a highly conductive, well bonded, well consolidated pure metal component. The adhesion of PARMOD.TM. conductors on an electronic component is enhanced by printing the PARMOD.TM. on a polyimide coating which has been applied to the electronic component.

Diffusion barrier and adhesive for PARMOD.TM. application to rigid

There is provided a process for increasing the Cetane Index of a distillate fraction by reacting the fraction with hydrogen over a catalyst comprising a hydrogenation component, such as platinum, and zeolite Beta. The process results in the selective ring opening of cyclic compounds, such as aromatics, with a minimum of cracking of paraffinic hydrocarbons.

Process for Cetane improvement of distillate fractions

This invention discloses an enhanced process for the hydroprocessing of a feed, the feed comprising a highly aromatic refinery distillate stream boiling in the range between 300.degree. and 900.degree. F. The feed is separated into light and heavy streams such that the light stream contains from 0.1 to 5 wt. % dibenzothiophene, substituted dibenzothiophenes, and heavier polycyclic thiophenes. The lighter stream is hydrotreated at pressures from 300.degree. to 1000.degree. F. with a commercial catalyst having a hydrogenation component. The heavier stream is treated in the presence of hydrogen at higher pressure, from 600 to 2000 psig with a catalyst comprising active material having a Constraint Index of less than 2 in addition to a hydrogenation component in order to achieve over 35% conversion of material boiling above 630.degree. F. The active material of the catalyst is a highly siliceous zeolite or an acidic amorphous silica-alumina material.

Production of clean distillate fuels from heavy cycle oils

There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is designated as MCM-41. There is also provided a method for preparing this catalyst by impregnating the heteropoly acid on the support. There is also provided a process for using this catalyst to catalyze acid catalyzed reactions, such as the isomerization of paraffins and the alkylation of aromatics.

Supported heteropoly acid catalysts

There is provided a process for isomerizing and/or disproportionating a paraffin over a catalyst comprising MCM-36. Examples of paraffins which may be isomerized and/or disproportionated include those having from 3 to 10 carbon atoms. The reaction may take place in the presence or absence of cofed hydrogen, and the catalyst may optionally include a hydrogenation metal, such as platinum. An example of a particular reaction is the disproportionation of isopentane to produce a product comprising isobutane and branched hexanes.

Growing community of inventors

Yardley, PA, United States of America

Gregory A Jablonski