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Wood products impregnated with monomer based compositions

A composition and monomer technology, applied in the direction of impregnating wood, polymer impregnation, wood impregnation, etc., can solve the problem of insufficient hardening of the wood surface

Inactive Publication Date: 2015-06-24
ARMSTRONG WORLD INDUSTRIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Success in hardening wood products by impregnation has been limited in part by challenges in wood absorption
Therefore, known impregnating monomer blends are not capable of sufficiently hardening the wood surface

Method used

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  • Wood products impregnated with monomer based compositions
  • Wood products impregnated with monomer based compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1: Exemplary Process for Preparing Dip Compositions

[0047] The polymerization initiator was weighed and poured into the first container with the acrylate monomer. The specified amount of acrylated plasticizer is then added to the second container. The acrylate monomer was then added to the second container. The acrylate monomer, acrylated plasticizer and polymerization initiator are then mixed until blended. The mixture is then returned to the first container, to which an additional amount of acrylate monomer is added. Mix the contents of the first container until homogeneous.

Embodiment 2

[0048] Example 2: Exemplary Process for Impregnation of Cellulose Substrates

[0049] Load the cellulose substrate to be impregnated into the container and close the door. Close the bleed valve and the main valve. Open the vacuum valve and gauge valve. Start the vacuum pump and turn on the vacuum gauge. Allow the vacuum to drop to a minimum of 50mm. The main valve is opened to allow the infusion composition to pass from the first container to the third container. The main valve was closed and the third vessel was pressurized to about 20 psi with nitrogen. Soak for about 45 minutes at about 20 psi. Open the main valve to blow the dipping composition back into the first container. Close the main valve. Boost to about 40psi and let it drain for about 15min. Open the main valve and allow the remaining dipping composition to drain into the first container. Pressurize and maintain the pressure in the third vessel at 70-80 psi. Steam is introduced into the heated shell of t...

Embodiment 3

[0051] 1500 g of the acrylate monomer-based composition as described in Table 1 (below) were prepared according to conventional procedures, for example as described in Example 1 (above). A 0.08 inch thick oak veneer was then impregnated with the composition. The impregnated veneers were glued and pressed together with other oak and poplar veneers to make 6-ply samples 1 inch thick for indentation testing.

[0052] Table 1

[0053]

[0054] The data described in Table 1 (above) demonstrate that the inclusion of an acrylated plasticizer in the impregnating composition provides an unexpected increase in the hardness of the cellulosic substrate impregnated therewith. It should be noted that the Janka test results reported in Table 1 are average values ​​taken from multiple tests for each composition.

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Abstract

Described herein are impregnated products comprising a cellulosic substrate having internal voids; and a reaction product of a composition comprising: an acrylate monomer; and an acrylated plasticizer; wherein the cellulosic substrate is impregnated with said composition. Methods of making and using the products are also described.

Description

[0001] Cross references to related patent applications [0002] This application claims the benefit of priority to US Patent Application Serial No. 14 / 137,492, filed December 20, 2013, which is hereby incorporated by reference in its entirety. Background technique [0003] Several methods have been employed to harden wood products. These attempts have included applying surface coatings such as varnishes and impregnating wood with various materials. Success in hardening wood products by impregnation has been limited in part by challenges in wood absorption. Thus, known impregnating monomer blends are not capable of sufficiently hardening the wood surface. [0004] There would be a need in the art for impregnating compositions that increase the stiffness of cellulosic materials and meet sustainability criteria. Contents of the invention [0005] Some embodiments of the present invention provide an impregnated product comprising: a cellulosic substrate having internal voids;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/15B27K3/50B27K3/52
CPCB27K3/15B27K5/065C08F283/06C08K3/22C08K2003/2227C08F220/14E04F15/046C08H8/00C08L33/12C08L71/02B27K2200/30C08L2666/14C08L2666/68C09D4/06Y10T428/31906C08F222/102B27K3/36B27K3/52E04F15/107
Inventor 基恩·T·奎森伯里田东杰弗里·S·罗斯
Owner ARMSTRONG WORLD INDUSTRIES
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