Utilization of a wood hydrolysate

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 97/02 (2006.01) C08H 8/00 (2010.01) C12P 7/10 (2006.01) C12P 7/56 (2006.01)

Patent

CA 2706993

The present invention relates to a method for utilizing a wood hydrolysate obtained from a hydrothermal treatment of a wood material method comprises the steps of providing a wood material, treating the wood material by means of an aqueous hydrothermal treatment so that a wood hydrolysate and a wood residue is formed. The wood hydrolysate comprises oligo- and polysaccharides as the main component of dry matter. The method further comprises the steps of; separating the wood hydrolysate into at least a first and a second fraction and using at least one of the at least first and second fractions for production of an intermediate or end product. Such end product may be e.g. a film, coating, package or a gel. The present invention also relates to a polymer product such as a film, a coating or a gel and its applications. The present invention provides for biodegradable and renewable polymer products and a method which utilizes and extracts a very high product value from a process.

La présente invention concerne un procédé d'utilisation d'un hydrolysat de bois obtenu par un traitement hydrothermal d'un matériau de bois. Le procédé comprend les étapes consistant à mettre à disposition un matériau de bois, traiter le matériau de bois par un traitement hydrothermal aqueux de manière à former un hydrolysat de bois et un résidu de bois. L'hydrolysat de bois comprend des oligo- et polysaccharides en tant que composants principaux de la matière sèche. Le procédé comprend également les étapes consistant à séparer l'hydrolysat de bois en au moins une première et une seconde fraction et utiliser au moins la première et/ou la seconde fraction pour la fabrication d'un produit intermédiaire ou final. Un tel produit final peut être p. ex. un film, un revêtement, un emballage ou un gel. La présente invention concerne également un produit polymère tel qu'un film, un revêtement ou un gel, et ses applications. La présente invention concerne des produits polymères biodégradables et renouvelables et un procédé qui utilise et extrait un produit de très grande valeur d'un procédé.

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