Treating lignocellulosic materials

Patent metadata

Field	Value
Publication number	US-8986399-B2
Application number	US-201113319834-A
Country	US
Kind code	B2
Filing date	May 25, 2011
Priority date	May 25, 2011
Publication date	Mar 24, 2015
Grant date	Mar 24, 2015

Abstract

A process of covalently modifying a lignocellulosic material is provided. The process includes oxidizing a lignocellulosic material having hydroxyl groups with an oxidant to oxidize at least a portion of the hydroxyl groups to carboxylic acid groups, optionally activating the carboxylic acid groups with an activating agent to form activated carboxylic acid groups, and reacting the carboxylic acid groups or the activated carboxylic acid groups with a first nitrogen-containing reagent selected from amino acids, peptides, or protected derivatives thereof to provide a treated lignocellulosic material. The treated lignocellulosic materials thus prepared displays resistance to degradation.

First claim

What is claimed is:

1. A composition comprising:
an amino acid having an N-terminus or a peptide having an N-terminus on a surface of a lignocellulosic material;
wherein the N-terminus of the amino acid or the peptide is covalently bound to the lignocellulosic material via an amide bond;
and wherein the composition is a biocidal agent.

2. The composition of claim 1 , wherein the lignocellulosic material comprises wood, plant-derived material, kenaf, grasses, bagasse, cotton, jute, hemp, flax, bamboo, sisal, abaca, and mixtures of any two or more thereof.

3. The composition of claim 1 , wherein the lignocellulosic material is wood lumber, wood fiber, wood particles, wood chips, ground wood, wood flour, wood flakes, wood veneers, wood laminates, or saw dust.

4. The composition of claim 1 , wherein the biocidal agent is a microbicide, a fungicide, a rodenticide, an herbicide, or an insecticide.

5. The composition of claim 1 , wherein the amino acid is (S)-canavanine.

6. The composition of claim 1 , wherein fungal growth on the treated lignocellulosic material is reduced by about 10% to about 100% in comparison to an untreated lignocellulosic material.

Assignees

• Chen Sung-Wei
• Rothfuss Chris
• Choi John
• Empire Technology Dev Llc

Inventors

• Chen Sung-Wei
• Rothfuss Chris
• Choi John

Classifications

• C08H8/00

  Macromolecular compounds derived from lignocellulosic materials {(pretreatment thereof B27N)} · CPC title

• C08L97/02 Primary

  Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)} · CPC title