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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Patent
DuPont Company | Date: 2017-03-01

The present invention relates to the use of lactic acid bacteria strains and compositions comprising these strains for manufacturing cooked meat with improved properties. These strains and compositions are particularly suitable for manufacture of cooked ham, frankfurter sausages and mortadella.


Patent
DuPont Company | Date: 2017-04-05

An enzymatically produced soluble -glucan fiber composition is provided suitable for use as a digestion resistant fiber in food and feed applications. The soluble -glucan fiber composition can be blended with one or more additional food ingredients to produce fiber-containing compositions. Methods for the production and use of compositions comprising the soluble -glucan fiber are also provided.


Patent
DuPont Company | Date: 2017-01-18

Compositions comprising oxidized poly alpha-1,3-glucan compounds are disclosed herein. Oxidized poly alpha-1,3-glucan compounds are produced by contacting poly alpha-1,3-glucan under aqueous conditions with at least one N-oxoammonium salt.


Patent
DuPont Company | Date: 2017-04-05

An enzymatically produced soluble -glucan fiber composition is provided suitable for use as a digestion resistant fiber in food and feed applications. The soluble -glucan fiber composition can be blended with one or more additional food ingredients to produce fiber-containing compositions. Methods for the production and use of compositions comprising the soluble -glucan fiber are also provided.


Patent
DuPont Company | Date: 2017-02-08

Disclosed are condensed tannin-based foams comprising a formaldehyde-free polymeric phase defining a plurality of open cells and a plurality of closed cells, wherein the formaldehyde-free polymeric phase comprises an acid catalyzed tannin-based resin derived from a surface-active condensed tannin, a formaldehyde-free tannin-reactive monomer, a saturated or an unsaturated organic anhydride, a polyamine, an ethoxylated castor oil, and an optional plasticizer. Also disclosed are mixed tannin-phenolic foams and methods of making thereof.


Patent
DuPont Company | Date: 2017-03-29

Polyester films with abrasion resistant coatingsand methods for making the same are provided. The coatedpolyester filmscomprisea polyester film substrate and a coating on at least one side of the polyester film substrate, wherein the coating is derived from a coating composition comprising: (i) a melamine crosslinker component; and (ii) a polyurethane component derivable from at least one diisocyanate and at least one polymeric polyol.


Patent
DuPont Company | Date: 2017-04-05

An enzymatically produced soluble -glucan fiber composition is provided suitable for use as a digestion resistant fiber in food and feed applications. The soluble -glucan fiber composition can be blended with one or more additional food ingredients to produce fiber-containing compositions. Methods for the production and use of compositions comprising the soluble -glucan fiber are also provided.


Patent
DuPont Company | Date: 2017-02-08

A method for improving crude palm oil yields or separating the crude palm oil from the sludge or a combination thereof in palm fruit processing comprising: admixing a palm fruit or a portion thereof or a palm fruit extract and an enzyme, which enzyme degrades a phospholipid present in said palm fruit or portion thereof or palm fruit extract; and incubating the admixture at about 45C to about 95C for about 15 minutes to about 6 hours. Also included are uses of an enzyme which degrades a phospholipid.


A thermoplastic composite laminate comprises in order a top layer composed of at least one thermoplastic film, a first tie layer, a fabric layer composed of a fabric comprising aromatic polyamide fibers and a surface activation agent, a second tie layer and a bottom layer composed of at least one thermoplastic film; wherein the thermoplastic composite laminate has a 25% or more increase in the average bonding strength as compared to that of a comparative laminate. Also disclosed are articles comprising or produced from the thermoplastic composite laminates, wherein the articles are housings or protective covers for mobile electronic devices.


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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