E.i. Dupont De Nemours and Company

Nutrition & Biosciences USA 4, Inc.

Invista North America S.a.r.l.

Dupont Industrial Biosciences Usa, LLC

Dupont Safety & Construction, Inc.

Michael W Cobb

Sharlene Renee Williams

Jayme L Paullin

Rakesh Nambiar

T Joseph Dennes

Rahul B Kasat

Andrea M Perticone

Justin W Chan

Mark Andrew Harmer

Weiming Qiu

Fredrik Nederberg

Joseph D Trentacosta

Vivek Kapur

Bhuma Rajagopalan

Surbhi Mahajan

John Henry McMinn

Alexander Anthony Marchione

Peter A Brown

Andrew Tadros

Ann Y Liauw

Vincent Galante

Mark Gary Weinberg

A hydrocolloid or aqueous solution comprising a poly alpha-1,3-glucan ether compound is disclosed having a viscosity of at least about 10 centipoise (cPs). The poly alpha-1,3-glucan ether compound in these compositions has a degree of substitution of about 0.05 to about 3.0. Also disclosed is a method for increasing the viscosity of a hydrocolloid or aqueous composition using a poly alpha-1,3-glucan ether compound.

Use of poly alpha-1,3-glucan ethers as viscosity modifiers

Disclosed are foam compositions and processes to form closed-cell tannin-based foams. The foams comprises a continuous polymeric phase defining a plurality of cells, wherein the continuous polymeric phase comprises a tannin-based resin derived from a tannin, a first monomer, and a second monomer, wherein the first monomer comprises formaldehyde, paraformaldehyde, furfural, glyoxal, acetaldehyde, 5-hydroxymethylfurfural, acrolein, levulinate esters, sugars, 2,5-furandicarboxylic acid, 2,5-furandicarboxylic aldehyde, urea, difurfural (DFF), or mixtures thereof, and the second monomer comprises furfuryl alcohol, glycerol, sorbitol, lignin, or mixtures thereof, and wherein the plurality of cells comprises a plurality of open-cells and a plurality of closed-cells with an open-cell content measured according to ASTM D6226-5, of less than 50%. The foam composition also comprises a discontinuous phase disposed in at least a portion of the plurality of closed-cells, the discontinuous phase comprising one or more blowing agents.

Closed-cell tannin-based foams

Disclosed are foam compositions and processes to form mixed tannin-phenolic foams. The foams comprises a continuous polymeric phase defining a plurality of cells, wherein the continuous polymeric phase comprises a mixed-resin derived from a phenol, a tannin, and a first monomer, and wherein the plurality of cells comprises a plurality of open-cells and a plurality of closed-cells with an open-cell content measured according to ASTM D6226-5, of less than 50%. The foam composition also comprises a discontinuous phase disposed in at least a portion of the plurality of closed-cells, the discontinuous phase comprising one or more blowing agents.

Mixed tannin-phenolic foams

Described is the preparation of sulfonated polyoxadiazole polymers with a high degree of sulfonation and good flammability properties. The polymers are useful in articles such as fibers.

Preparation of sulfonated naphthalene polyoxadiazoles polymers

Described are sulfonated aromatic compounds and methods of making said compounds. The compounds are useful as monomers in a variety of polymers such as polyamides and polyesters, and can impart flame resistant properties.

Sulfonated aromatic compounds

The invention is directed to sulfonated aromatic polyesters and methods of making said polymers. These polymers are useful as fibers and other articles. The polymer has a property of increased flame retardancy.

Sulfonated aromatic polyesters

Supported bis(phosphorus) ligands are disclosed for use in a variety of catalytic processes, including the isomerization, hydrogenation, hydroformylation, and hydrocyanation of unsaturated organic compounds. Catalysts are formed when the ligands are combined with a catalytically active metal, such as nickel.

Supported bis(phosphorus) ligands and their use in the catalysis

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Wilmington, DE, United States of America

Michael W Cobb