US 8,562,731 B2 · Fungal modified chitosan adhesives and wood composites made from the adhesives

Abstract

The present invention describes a fungal modified chitosan adhesive for binding a fibrous material and the method of producing the adhesive. The adhesive is produced by providing a chitosan containing raw material; a fungal growing medium; a fungal culture; mixing the raw material, the growing medium and the fungal culture together to produce a suspension; incubating the suspension to produce a broth comprising a modified chitosan solid, an at least partially-consumed medium liquid and a fungal residue; separating the modified chitosan solid from the liquid and the fungal residue, and dissolving the modified chitosan solid to produce the adhesive resin.

Claims20

Dependent claims

A fungal modified chitosan adhesive for a fibrous material produced by

providing a chitosan containing raw material (2);
providing a fungal growing medium (4);
providing a fungal culture (6);
wherein the fungal culture is at least one of species Ascomycota mitosporic fungi;
mixing (10) the raw material (2), the growing medium (4) and the fungal culture together to produce a suspension (12);
incubating (20) the suspension (12) to produce a broth (22) comprising a modified chitosan solid (32), an at least partially-consumed medium liquid (34) and a fungal residue (36);
separating (30) the modified chitosan solid (32) from the liquid (34) and the fungal residue (36), and
dissolving (40) the modified chitosan solid (32) to produce the adhesive resin (42).

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/011,337Filed 21 Jan 2011 · us provisional application

Priority

1 Feb 2010

Published

US 2011/0190424 A14 Aug 2011

Granted

22 Oct 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

C12P 19/26
Preparation of compounds containing saccharide radicals: preparation of nitrogen-containing carbohydrates
C08B 37/003
2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof: chitin, i.e. 2-acetamido-2-deoxy--D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan,…
C09J 105/08
Adhesives based on polysaccharides or on their derivatives, not provided for in groups C09J101/00 or C09J103/00: chitin; Chondroitin sulfate;…
C12P 19/04
Preparation of compounds containing saccharide radicals: polysaccharides, i.e. compounds containing more than five saccharide radicals attached to…

Fungal modified chitosan adhesives and wood composites made from the adhesives

Life of this patent

Fungal modified chitosan adhesives and wood composites made from the adhesives

Life of this patent

Abstract

Claims20