Adhesive compositions and methods of using and making the same
AssigneeState of Oregon Acting by and trhough the State Board of Higher Education on Behalf of Oregon State University
InventorsKaichang Li, Xinglian Geng
Life of this patent
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Abstract
Adhesive compositions produced from abundant and renewable resources such as lignocellulosic materials, particularly decayed lignocellulosic materials or demethylated lignin. Other components present in particular examples of the adhesive compositions include relatively inexpensive materials, such as borates and/or polyethyleneimine. Also disclosed are lignocellulosic composites that are made from the adhesive compositions.
Claims29
An adhesive composition, comprising:
- at least one lignin component;
- at least one amine compound;
- and
- at least one boron compound,
- wherein the adhesive composition is substantially formaldehyde-free and is substantially free of any compounds that degenerate to form formaldehyde.
A substantially formaldehyde-free adhesive composition, comprising:
- solubilized decayed lignocellulosic material;
- and
- at least one polyamine,
- wherein the composition does not include a phenol-formaldehyde resin or a urea-formaldehyde resin.
A substantially formaldehyde-free adhesive composition comprising a batch of the following ingredients that includes:
- solubilized decayed lignocellulosic material;
- at least one boron compound;
- and
- at least one polyamine,
- wherein the composition is substantially free of any compounds that degenerate to form formaldehyde.
A substantially formaldehyde-free adhesive composition comprising a batch of the following ingredients that includes:
- solubilized decayed lignocellulosic material;
- at least one reducing agent;
- and
- at least one polyamine,
- wherein the composition is substantially free of any compounds that degenerate to form formaldehyde.
A substantially formaldehyde-free adhesive composition produced by:
- mixing decayed lignocellulosic material with at least one boron compound;
- and
- contacting the resulting mixture with at least one polyamine,
- wherein the composition is substantially free of any compounds that degenerate to form formaldehyde.
A substantially formaldehyde-free adhesive composition produced by:
- mixing decayed lignocellulosic material with at least one reducing agent;
- and
- contacting the resulting mixture with at least one polyamine,
- wherein the composition is substantially free of any compounds that degenerate to form formaldehyde.
A substantially formaldehyde-free adhesive composition comprising:
- a mixture of at least one decayed lignocellulosic material and an alkaline aqueous solution;
- and
- at least one polyamine,
- wherein the composition is substantially free of any compounds that degenerate to form formaldehyde.
A substantially formaldehyde-free adhesive composition comprising a batch of the following ingredients that includes:
- demethylated lignin;
- at least one boron compound;
- and
- at least one polyamine,
- wherein the composition is substantially free of any compounds that degenerate to form formaldehyde.
Dependencies are inferred from the claim text.