Wood adhesive, method for adhering wood materials using the same, and composite wood structure using the same

Patent metadata

Field	Value
Publication number	US-10759148-B2
Application number	US-201816059539-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Feb 18, 2014
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A wood adhesive, a method for adhering wood materials using the same, and a composite wood structure using the same are disclosed. The wood adhesive comprises a first agent and a second agent, wherein the first agent comprises sodium carboxymethyl cellulose having a molecular weight from about 15,000 to about 500,000 and a degree of substitution from about 0.4 to about 2, and the second agent comprises polymeric quaternary amine.

First claim

What is claimed is:

1. A method for adhering wood materials, comprising:
providing a first wood block and a second wood block; and
bonding the first wood block with the second wood block by a wood adhesive, wherein the wood adhesive comprises a first agent and a second agent, the first agent comprises sodium carboxymethyl cellulose having a molecular weight from 15,000 to 500,000 and a degree of substitution from 0.4 to 2, and the second agent comprises polymeric quaternary amine, wherein the bonding the first wood block with the second wood block step comprises mixing the first agent and the second agent.

2. The method according to claim 1 , wherein the bonding the first wood block with the second wood block step further comprises:
applying the wood adhesive to at least one of the first wood block and the second wood block; and
curing the wood adhesive.

3. The method according to claim 2 , wherein the first agent and the second agent is mixed at a ratio from 0.25:1 to 1:0.1.

4. The method according to claim 2 , wherein the first agent and the second agent is mixed at a ratio from 0.7:1 to 1:0.2.

5. The method according to claim 2 , wherein the curing the wood adhesive step comprises applying a pressure of 10 kg/cm 2 at 5° C. to 45° C. for 10 minutes to 30 minutes.

6. The method according to claim 5 , wherein the curing the wood adhesive step further comprises applying a pressure of 10 kg/cm 2 at 90° C. to 230° C. for 3 minutes to 25 minutes.

7. The method according to claim 1 , further comprising pre-treating the first wood block and the second wood block.

8. The method according to claim 7 , wherein the pre-treating the first wood block and the second wood block step comprises heating.

9. A composite wood structure, comprising:
a first wood block;
a second wood block; and
an adhesion layer bonding the first wood block with the second wood block, the adhesion layer is formed by mixing a first agent and a second agent of a wood adhesive and curing the wood adhesive, wherein the first agent of the wood adhesive comprises sodium carboxymethyl cellulose having a molecular weight from 15,000 to 500,000 and a degree of substitution from 0.4 to 2, and the second agent of the wood adhesive comprises polymeric quaternary amine.

10. The composite wood structure according to claim 9 , wherein at least one of the first wood block and the second wood block comprises a particleboard, an oriented strand board, a fiberboard, a plywood, a block board, or a laminate.

Assignees

• Ind Tech Res Inst

Inventors

• Chen Man-Lin
• Lin Hsien-Kuang
• Chen Sue-May
• Chen Su-Huey

Classifications

• B32B7/12 Primary

  using interposed adhesives or interposed materials with bonding properties · CPC title

• C08L1/286

  substituted with acid radicals, e.g. carboxymethyl cellulose [CMC] (C08L1/282 takes precedence) · CPC title

• B32B21/02

  the layer being formed} of fibres, chips, or particles {, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard · CPC title

• C08G73/0293

  Quaternisation of polyamidoamines · CPC title

• B32B23/00

  Layered products comprising {a layer of} cellulosic plastic substances {, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose} · CPC title