Wilmington, NC, United States
Wilmington, NC, United States

E. I. du Pont de Nemours and Company, commonly referred to as DuPont, is an American chemical company that was founded in July 1802 as a gunpowder mill by Éleuthère Irénée du Pont. In the 20th century, DuPont developed many polymers such as Vespel, neoprene, nylon, Corian, Teflon, Mylar, Kevlar, Zemdrain, M5 fiber, Nomex, Tyvek, Sorona and Lycra. DuPont developed Freon for the refrigerant industry, and later more environmentally friendly refrigerants. It developed synthetic pigments and paints including ChromaFlair.In 2014, DuPont was the world's fourth largest chemical company based on market capitalization and eighth based on revenue. Its stock price is a component of the Dow Jones Industrial Average. Wikipedia.


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Polynucleotide sequences encoding diacylglycerol acyltransferase genes and the use of these acyltransferases for increased seed storage lipid production and altered fatty acid profiles in oilseed plants are disclosed. Transgenic soybean seed having increased total fatty acid content of at least 20% and altered fatty acids when compared to the total fatty acid content of non-transgenic, null segregant soybean seed are described. Methods for increasing the total fatty acid content of a soybean seed by at least 20% include steps of transformation and selection.


A solid lignocellulosic fuel composition is produced from combining the syrup co-product of a lignocellulosic biomass fermentation process and an additional fuel component. The syrup is an excellent binder for a powdery fuel material that is not readily handled. The fuel composition is further processed to form briquettes, pellets and the like.


Patent
DuPont Company | Date: 2017-05-24

A laminated structure containing a microporous film bonded in a face to face relationship with a plexifilamentary nonwoven web with an adhesive layer situated in contact with a least a portion of both the microporous film and the nonwoven web. The adhesive may contain reactive tracers.


Patent
DuPont Company | Date: 2017-05-24

This invention relates to a rapid, accurate method for detection and characterization of Listeria monocytogenes serotypes based on the presence of nucleic acid sequences, in particular, to a PCR-based method for detection, and to oligonucleotide molecules and reagents and kits useful therefore. This method is preferably employed to detect Listeria monocytogenes in food and environmental samples. The present invention further relates to replication compositions and kits for carrying out the method of the present invention.


Patent
DuPont Company | Date: 2017-02-09

Disclosed is a fungicidal composition comprising (a) at least one compound selected from the compounds of Formula 1, N-oxides, and salts thereof, wherein R^(1), R^(2), R^(3), R^(4), R^(5 )and R^(6 )are as defined in the disclosure;and (b) at least one additional fungicidal compound. Also disclosed is a method for controlling plant diseases caused by fungal plant pathogens comprising applying to the plant or portion thereof, or to the plant seed, a fungicidally effective amount of a compound of Formula 1, an N-oxide, or salt thereof (e.g., as a component in the aforesaid composition). Also disclosed is a composition comprising: (a) at least one compound selected from the compounds of Formula 1 described above, N-oxides, and salts thereof; and at least one invertebrate pest control compound or agent.


This invention is directed to a polymer thick film transparent conductive composition that may be used in applications where thermoforming of the base substrate occurs, e.g., as in capacitive switches. Polycarbonate substrates are often used as the substrate and the polymer thick film conductive composition may be used without any barrier layer. Depending on the specific design, the thermoformable transparent conductor may be below or on top of a thermoformable silver conductor. Thermoformable electric circuits benefit from the presence of an encapsulant layer over the dried polymer thick film conductive composition. The electrical circuit is subsequently subjected to an injection molding process.


A porous membrane constructed of a cast polymeric film with a face located adjacent to at least a portion of the surface of a nanofiber substrate fabric. The membrane is not formed by lamination of two independent layers one layer being the film and the other being the substrate fabric.


This invention is directed to a polymer thick film transparent conductive composition with haptic response capability that may be used in applications where thermoforming of the base substrate occurs, e.g., as in capacitive switches. Polycarbonate substrates are often used as the substrate and the polymer thick film conductive composition may be used without any barrier layer. Depending on the specific design, the thermoformable transparent conductor may be below or on top of a thermoformable silver conductor. Thermoformable electric circuits benefit from the presence of an encapsulant layer over the dried polymer thick film conductive composition. The electrical circuit is subsequently subjected to an injection molding process.


Patent
DuPont Company | Date: 2017-07-05

Use of a yeast capable of producing ethanol and acetic acid by fermentation of a carbohydrate, in a method for the fermentation of cocoa beans, is disclosed.


Grushin V.V.,DuPont Company
Accounts of Chemical Research | Year: 2010

Figure Presented Although springing from two established fields, organometallic chemistry and fluorine chemistry, organometallic fluorine chemistry is still in its early stages. However, developments in this area are expected to provide new tools for the synthesis of selectively fluorinated organic compounds that have been in high demand. Selectively fluorinated organic molecules currently account for up to 40% of all agrochemicals and 20% of all pharmaceuticals on the market. Our research efforts have been focused on the development of new organometallic and catalytic methods for the selective introduction of fluorine and the CF3 group into the aromatic ring. Monofluorinated and trifluoromethylated aromatic compounds are still made by the old technologies that employ stoichiometric quantities of hazardous and costly materials. In this Account, we describe our studies toward the development of safe, catalytic alternatives to these methods. We have synthesized, characterized, and studied the reactivity of the first aryl palladium (II) fluoride complexes. We have demonstrated for the first time that a Pd-F bond can be formed in a soluble and isolable molecular complex: this bond is more stable than previously thought. Toward the goal of fluoroarene formation via Ar-F reductive elimination, we have studied a number of σ-aryl Pd(II) fluorides stabilized by various P, N, and S ligands. It has been established that numerous conventional tertiary phosphine ligands, most popular in Pd catalysis, are unlikely to be useful for the desired C-F bond formation at the metal center because of the competing, kinetically preferred P-F bond-forming reaction. A metallophosphorane mechanism has been demonstrated for the P-F bond-forming processes at Rh(I) and Pd(II), which rules out the possibility of controlling these reactions by varying the amount of phosphine in the system, a most common and often highly efficient technique in homogeneous catalysis. The novel F/Ph rearrangement of the fluoro analogue of Wilkinson's catalyst [(Ph 3P)3RhF] and P-F bond-forming reactions at Pd(II) are insensitive to phosphine concentration and, because of the small size of fluorine, occur even with bulky phosphine ligands. These observations may guide further efforts toward metalcatalyzed nucleophilic fluorination of haloarenes. We have also developed aryne-mediated and CuF2/TMEDA-promoted aromatic fluorination reactions. The formation of fluoroarenes from the corresponding iodo- and bromoarenes in the presence of the CuF2/TMEDA system is the first example of a transition metal-mediated fluorination of nonactivated aryl halides in the liquid phase. Progress has also been made toward the development of aromatic trifluoromethylation. We have found unexpectedly facile and clean benzotrifluoride formation as a result of Ph-CF3 reductive elimination from [(Xantphos)Pd(Ph)CF3]. This observation demonstrates for the first time that the notoriously strong and inert metal-CF3 bond can be easily cleaved (at 50-80°C) as a result of reductive elimination to produce the desired aryl-trifluoromethyl bond, the only previously missing link of the catalytic loop. Our study of the novel complex [(Ph3P)3RhCF3] has led to a rationale for the long-puzzling strong trans influence (electron donation) of the CF3 group which, in complete contrast, is known to be an electron acceptor in organic chemistry. © 2010 American Chemical Society.

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