Stichting Dienst Landbouwkundig Onderzoek

Archer Daniels Midland Company

Stichting Wageningen Research

Cooperatie Koninklijke Cosun U.a.

Cooperatieve Weiproduktenfabriek 'Borculo' W.a.

Jacobus Van Haveren

Augustinus Emmanuel Frissen

Daniël Stephan Van Es

Frits Van Der Klis

Henricus Wilhelmus Carolina Raaijmakers

Erik Christopher Hagberg

Kevin J Martin

Hendrikus Luitjes

Augustinus Emmanuël Frissen

Kevin Martin

Silvan De Spirt

Robert Willem Kammelar

Gerardus Petrus Franciscus Maria Van Engelen

Jan Van Ee

Daniel Stephan Van Es

Roeland Leo Croes

Elinor Lindsey Scott

Jerome Emile Lucien Le Notre

Willem Vogelzang

Daniel S Van Es

Johannes Rutger Idsard Knoop

Jerome Le Notre

Rajeesh Kumar Pazhavelikkakath Purushothaman

Jan Hendrik Van Ee

Jérôme Emile Lucien Le NÔTRE

Jérôme Emile Lucien Le Nôrte

Johannes Cornelis Van De Kolk

Daniel Stephen Van Es

Johannes Rutger Knoop

Gerardus Petrus Van Engelen

Disclosed is the oxidation of uronic acids, such as galacturonic acid, to the corresponding aldaric acids, such as galactaric acid, under neutral or acidic conditions. Use is made of a supported gold catalyst. The oxidation occurs in good selectivity and yield, under unexpectedly mild conditions. A source of galacturonic acids is pectins, such as from sugar beet pulp.

Oxidation of uronic acids to aldaric acids

Semi-crystalline polyesters from isoidide and 2,5-furandicarboxylic acid are disclosed, as well as semi-crystalline copolyesters from isoidide and a minor amount of either 1,4-butanediol or 2,3-butanediol with 2,5-furandicarboxylic acid, together with processes for making high molecular weight materials by melt polymerization providing a semi-crystalline polymer then performing solid state condensation on the semi-crystalline polymer.

Polyisoidide furanoate thermoplastic polyesters and copolyesters and a use thereof in hot fill packaging

Disclosed is a method of making methacrylic acid, or a carboxylic derivative thereof, from itaconic acid, isomers, or precursors thereof. A starting material comprising an acid selected from the group consisting of itaconic acid, citraconic acid, mesaconic acid, citric acid, aconitic acid, isocitric acid and mixtures thereof, is subjected to contact with 0.1 eq. to 3.0 eq. of a base, at a temperature of 150&#xb0; C. to 350&#xb0; C., under the influence of a transition metal-containing heterogeneous catalyst. A better yield at lower temperatures is achieved.

Process for the production of methacrylic acid

Disclosed is a method of making 5-formyl-2-furoic acid and furan-2,5-dicarboxylic acid. The method involves the use of 5-keto-aldonic acids as intermediates, as these can be subjected to ring formation by a cyclodehydration reaction under mild conditions. The 5-formyl-2-furoic acid or carboxylic derivative thereof is subjected to oxidation so as to form furan-2,5-dicarboxylic acid. The 5-keto-aldonic acid intermediates can be obtained by isomerization of uronic acids which can be obtained from sugar beet pulp, chicory pulp, fruit peals including orange peels, or non-terrestrial sources like seaweeds. A preferred source is sugar beet pulp.

Process and intermediates for the production of furan-2,5-dicarboxylic acid or derivatives thereof

Disclosed is a process for the preparation of isoidide from isosorbide. An aqueous solution of isosorbide is subjected to epimerization in the presence of hydrogen under the influence of a catalyst comprising ruthenium on a support, preferably a carbon support. The process of the invention can be conducted using a relatively low hydrogen pressure, and leads to a desired distribution of epimers, favoring isoidide over isomannide and isosorbide.

Method of making isoidide

Disclosed is the oxidation of uronic acids, such as galacturonic acid, to the corresponding aldaric acids (characterized by the formula HOOC&#x2014;(CHOH)n-COOH, with n being an integer of from 1 to 5) such as galactaric acids. The starting material comprising the uronic acid is subjected to oxygen under the influence of a supported gold catalyst and in the presence of a base. The oxidation occurs in good selectivity and yield, under unexpectedly mild conditions. A source of galacturonic acids is pectin, such as that derived from sugar beet pulp.

Catalytic oxidation of uronic acids to aldaric acids

Condensation products having adhesive properties are obtained by reaction of a polyamine with at least two equivalents of an oligosaccharide or a derivative thereof. Examples of the oligosaccharide include glucose, lactose, lactobionic acid and gluconic acid. Examples of the polyamine include diethylene triamine and triethylene tetraamine. The reaction may be a direct amination of the oligosaccharide, with the formation of a glycosylamine and optional N-acylation, or a reductive amination of the oligosaccharide, a glycitylamine being obtained, or alternatively an amidation of an glyconic acid. The condensation products can be used for gluing, for example, paper, cardboard, wood, plastic or glass at low or high temperature.

Sugar amines and sugar amides and use as glues

Growing community of inventors

Wageningen, Netherlands

Jacobus Van Haveren