E.i. Dupont De Nemours and Company

Fmc Corporation

Fmc Agro Singapore Pte. Ltd.

Stephen Ernest Jacobson

David Richard Corbin

Peter Michael Murphy

Patricia Metzger Cotts

Melea Rena Langley

Timothy Edward Hopkins

Sourav Kumar Sengupta

Gary David Annis

Donald J Dumas

Albert Loren Casalnuovo

Richard James Brown

Dennie Turin Mah

Howard M Blank

Rupert Spence

John Joseph Hagedorn

Wayne B Ely

Philip Osborne Moss

Sarah May Crawford

Liza Lopez

Venkateswara Rao Surisetty

Venkafeswara Rao Surisetty

A method for preparing 3-methyl-2-nitrobenzoic acid is disclosed wherein 1,3-dimethyl-2-nitrobenzene is combined with an oxidation catalyst in the presence of an oxygen source and an initiator, provided that less than 99% of the 1,3-dimethyl-2-nitrobenzene is oxidized. A method for preparing compounds of Formula 7 and Formula 11 is also disclosed wherein the method is characterized by using 3-methyl-2-nitrobenzoic acid as prepared by the method disclosed above.  wherein Ris C-Calkyl, C-Ccycloalkyl or C-Calkylcycloalkyl.

Process to prepare 3-methyl-2-nitrobenzoic acid by air oxidation

An improved process for producing perfluoroalkyl iodides of formula (I)F(CFCF)&#x2014;I&#x2003;&#x2003;(I)wherein n is an integer from 2 to 3, wherein the improvement comprises contacting at least one perfluoroalkyl iodide of formula (II) and at least one perfluoroalkyl iodide of formula (III)F(CFCF)&#x2014;I&#x2003;&#x2003;(II)F(CFCF)&#x2014;I&#x2003;&#x2003;(III)wherein m is an integer greater than or equal to 3, and p is an integer equal to or lower than 2, at a) a molar ratio of formula (III) to formula (II) of from about 1:1 to about 6:1, b) a residence time of from about 1 to about 9 seconds, and c) a temperature of from about 450&#xb0; C. to about 495&#xb0; C.

Producing short chain perfluoroalkyl iodides

A polyamide substrate having deposited thereon a copolymer effective to impart resistance to staining by turmeric wherein said copolymer comprises polymer units derived from (a) at least one cyclic olefin having from 5 to 12 carbon atoms, and (b) maleic anhydride wherein the molar ratio of total cyclic olefin to maleic anhydride is between about 0.5 and 1.3, and a method for using the copolymer to impart stain resistance to a polyamide substrate.

Cyclic olefin-maleic acid copolymers for stain resists

A hyperbranched polymer having pendent olefinic groups and comprising polymer units derived from one or more terminally-unsaturated, acyclic aliphatic diene and polymer units derived from maleic anhydride. Optionally, the hyperbranched polymer may further comprise polymer units derived from one or more 1-alkenes and/or a chain transfer agent. A process to prepare the hyperbranched polymer comprises contacting maleic anhydride with at least one terminally unsaturated acyclic aliphatic diene having at least 7 carbon atoms in the presence of an effective amount of a radical initiator in an aprotic solvent under dilute conditions.

Hyperbranched maleic anhydride-diene polymers

A method for imparting resistance to staining to a substrate comprising contacting the substrate with a copolymer comprising the monomers of Formula wherein

Copolymers for stain resistance

A composition which provides stain resistance and soil resistance to substrates comprising a copolymer of Formula 1 is disclosed, wherein D, M, R, R, x, k, h, i and j are defined as in claim

Perfluoroamidated and hydrolyzed maleic anhydride copolymers

Stain resistant composition comprises a hyperbranched polymer having pendent olefinic groups and comprising polymer units derived from one or more terminally-unsaturated, acyclic aliphatic diene and polymer units derived from maleic anhydride. Optionally, the hyperbranched polymer may further comprise polymer units derived from one or more 1-alkenes and/or a chain transfer agent. A method to provide stain resistance to a substrate comprises applying the stain resistant composition to said substrate. Suitable substrates include textiles and hard surfaces.

Stain resist comprising hyperbranched maleic anhydride-diene polymers

The present invention pertains to methods for preparing a compound of Formula (I), wherein A is O or N-L; each L is independently H or an acyl group; K is, together with the two contiguous linking carbon atoms, a phenyl ring, a 5- or 6-membered heteroaromatic ring or an aromatic 8-, 9- or 10-membered fused carbobicyclic or heterobicyclic ring system wherein each ring or ring system is optionally substituted; Ris H, Cto Calkyl or COR; Ris H or Cto Calkyl; and Ris Cto Calkyl; comprising hydrogenating a compound of Formula (II), wherein n is 0, 1 or 2 in the presence of a catalyst comprising palladium to form the compound of Formula (I). This invention further pertains to methods for preparing compounds of Formula (II) useful for preparing compounds of Formula (I). This invention also pertains to compounds used in these methods 

Methods of ortho alkylation

A low temperature electrolysis process that can be used for producing an alkali metal from an alkali metal halide is provided, which comprises electrolyzing an electrolyte composition comprising at least one alkali metal halide and a co-electrolyte comprising (a) a halide or halides of Group IIIA, Group IB, or Group VIII metals and (b) a halide-donating compound.

Low temperature alkali metal electrolysis

A process for reversible sorption of sulfur trioxide onto a sorbent comprising a) contacting from about 15% to 100% sulfur trioxide with the sorbent under anhydrous conditions at a temperature of from about 35&deg; C. to about 150&deg; C. thereby sorbing the sulfur trioxide onto the sorbent, b) desorbing sulfur trioxide from the sorbent at a temperature of from about 150&deg; C. to about 350&deg; C. at about atmospheric pressure, or under a vacuum pressure, and c) recycling said sorbent by continuously repeating steps a) and b), wherein said sorbent consists essentially of silica or zeolite having a silicon to aluminum ratio in the ranges of from about 1 to about 4.4 or greater than about 5.1, and having a pore size of at least 0.5 nm is disclosed.

Sulfur trioxide delivery system

This invention relates to a process for the production of an aryl thiol, which comprises hydrogenating an aryl sulfonyl chloride in a solvent in the presence of a palladium catalyst and a base whose conjugate acid has a pK of about 2 or greater, wherein the base is selected from the group consisting of ionic bases soluble in water and tertiary amines soluble in the solvent, the tertiary amines not having a methyl group attached to the amine nitrogen.

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Hockessin, DE, United States of America

Stephen Ernest Jacobson