E.i. Dupont De Nemours and Company

Nutrition & Biosciences USA 4, Inc.

Dupont Industrial Biosciences Usa, LLC

Princeton University

T Joseph Dennes

Jayme L Paullin

Andrea M Perticone

Rakesh Nambiar

Ayrookaran J Poulose

Perry G Caimi

Susan Marie Hennessey

Stephen Mazur

Kevin D Nagy

Rahul B Kasat

Michael W Cobb

Mark Scott Payne

Yefim Brun

Thomas Scholz

Pankaj Arora

Michael P Perry

Glen Edward Simmonds

Eric P Holowka

Stephane Francois Bazzana

Vindhya Mishra

Lakshmi Krishnamurthy

Jeffrey J Schwartz

Debora Flanagan Massouda

Simon Frisk

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

Compositions comprising cellulase and at least one poly alpha-1,3-glucan ether compound having a degree of substitution with an organic group of about 0.05-3.0 are disclosed. Such compositions can be dry or aqueous, the latter of which can have a viscosity of at least about 10 cPs. The disclosed composition can be in the form of a personal care product, household product, or industrial product, for example. Also disclosed are a method for preparing an aqueous composition comprising cellulase and a poly alpha-1,3-glucan ether compound, and a method of treating a material such as fabric by contacting it with this aqueous composition.

Compositions containing one or more poly alpha-1,3-glucan ether compounds

Poly alpha-1,3-glucan ether compounds are disclosed herein comprising positively charged organic groups. The degree of substitution of the ether compounds is about 0.05 to about 3.0. Also disclosed are methods of producing poly alpha-1,3-glucan ether compounds having positively charged organic groups, as well as methods of using these ether compounds for increasing the viscosity of a aqueous compositions. Hydrocolloids and aqueous solutions comprising the ether compounds are also disclosed.

Cationic poly alpha-1,3-glucan ethers

Compositions are disclosed herein comprising poly alpha-1,3-1,6-glucan with a weight average degree of polymerization (DP) of at least 1000. This glucan polymer comprises at least 30% alpha-1,3 linkages and at least 30% alpha-1,6 linkages. Further disclosed are glucosyltransferase enzymes that synthesize poly alpha-1,3-1,6-glucan. Ether derivatives of poly alpha-1,3-1,6-glucan and methods of using such derivatives as viscosity modifiers are also disclosed.

Glucosyltransferase enzymes for production of glucan polymers

Compositions comprising cellulase and at least one poly alpha-1,3-glucan ether compound having a degree of substitution with a positively charged organic group of about 0.05-3.0 are disclosed. Such compositions can be dry or aqueous, the latter of which can have a viscosity of at least about 10 cPs. The disclosed composition can be in the form of a personal care product, household product, or industrial product, for example. Also disclosed are a method for preparing an aqueous composition comprising cellulase and a poly alpha-1,3-glucan ether compound, and a method of treating a material such as fabric by contacting it with this aqueous composition.

The present invention is directed toward a process for making poly alpha-1,3-glucan formate films. These films are translucent or transparent and can be used in packaging applications.

Production of poly alpha-1,3-glucan formate films

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.

Oxidized poly alpha-1,3-glucan

The present invention is directed toward a process for making a poly alpha-1,3-glucan film. These films can be transparent or translucent and used in packaging applications.

Production of poly alpha-1,3-glucan films

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Parkesburg, PA, United States of America

T Joseph Dennes