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Compositions and methods for treating cellulose-based materials with micronized additives

a technology of additives and cellulose, applied in the direction of cellulosic plastic layered products, lighting and heating apparatus, paints with biocides, etc., can solve the problems of environmental damage, leaching additives, residue bleeding, etc., and achieve the effects of reducing cost, reducing cost, and reducing cos

Inactive Publication Date: 2010-05-13
OSMOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The patent describes a new way to treat wood and other cellulosic materials using micronized additives. These additives can be mixed with water and applied to the wood without the need for harmful solvents or emulsifiers. This reduces costs and minimizes the risk of harmful exposure. The micronized additives can be made by grinding them in wetting agents or dispersants, which helps them stick to the wood. This method is safer and more effective than other treatments currently on the market."

Problems solved by technology

Disadvantages of the typical approach used in the art include increased cost, residue bleeding, environmental damage and harmful exposure to leached additive.

Method used

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  • Compositions and methods for treating cellulose-based materials with micronized additives
  • Compositions and methods for treating cellulose-based materials with micronized additives
  • Compositions and methods for treating cellulose-based materials with micronized additives

Examples

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example 1

[0043]Six hundred grams of red iron oxide, 400 g yellow iron oxide and 10 g carbon black are added to a container containing 2850.0 g of water and 150 g of a commercially available dispersant. The mixture is mechanically stirred for about 20 minutes and then added to a grinding mill. The sample is ground for about 1 hour and a stable dispersion is obtained. The particle size of the dispersed product can be analyzed by Horiba LA-910 Particle Size Distribution Analyzer (PSDA). The average particle size is preferably 0.3 microns with a distribution range of 0.04 um to 1.5 um.

[0044]The resulting brown iron oxide dispersion can be diluted with water to make a treating fluid containing 1.0% iron oxide. The treating fluid can be used to treat southern pine samples using a full cell process. The treated samples can be oven dried and tested to check uniform distribution of iron oxide throughout the cross sections and for the presence of a uniform brown color.

example 2

[0045]Nine hundred grams of red iron oxide and 100 g yellow iron oxide are added to a container containing 1550 g of water and 150 g of a commercially available dispersant. The mixture is mechanically stirred for about 20 minutes and then added to a grinding mill. The sample is ground for about 1 hour and a stable dispersion is obtained. The particle size of the dispersed product can be analyzed by Horiba LA-910 Particle Size Distribution Analyzer (PSDA). The average particle size is preferably 0.3 microns with a distribution range of 0.005 um to 1.5 um.

[0046]The resulting dispersion can be diluted with water to make a treating fluid containing 0.5% total iron oxides. The treating fluid can be used to treat southern pine samples using a full cell process. The treated samples can be oven dried and tested to check uniform distribution of iron oxide throughout the cross sections and for the presence of a uniform color.

example 3

[0047]Seven hundred grams of red iron oxide, 200 g yellow iron oxide and 5 g black iron oxide are added to a container containing 2050 g of water and 180 g of a commercially available dispersant. The mixture is mechanically stirred for about 20 minutes and then added to a grinding mill. The sample is ground for about 1 hour and a stable dispersion is obtained. The particle size of the dispersed product can be analyzed by Horiba LA-910 Particle Size Distribution Analyzer (PSDA). The average particle size is preferably 0.35 microns with a distribution range of 0.005 um to 2.0 um.

[0048]The resulting dispersion can be diluted with water to make a treating fluid containing 0.5% total iron oxides. The treating fluid can be used to treat southern pine samples using a full cell process. The treated samples can be oven dried and tested to check uniform distribution of iron oxide throughout the cross sections and for the presence of a uniform color.

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Abstract

A composition for treating cellulosic materials is provided. The composition comprises a dispersion of micronized additives. The dispersion comprises additive particles with diameters in the range of 0.001 to 25 microns. Also provided is a method for the application of the additive-containing composition to wood, as well as wood products which have been treated with the composition.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]Applicant hereby claims priority to U.S. Provisional Application No. 60 / 570,659, filed on May 13, 2004, which is incorporated herein by reference.BACKGROUND[0002]Wood and wood-based substrates, such as paper, particleboard, wood composites, plastic lumbers, rope, etc., are often treated in order to impart desired characteristics to or enhance existing characteristics of the substrate. Non-limiting examples of performance characteristics which can be imparted or enhanced by treatment of a substrate with additives are durability, fire resistance and water resistance. Non-limiting examples of such appearance characteristics are color and texture. Non-limiting examples of additives which can be applied are colorants, pigments, polymers, water repellants, dimensional stabilizing agents, UV inhibitors, UV absorbers, UV blockers, antioxidants, fire retardants and biocides, such as, for example, insecticides, fungicides, moldicides, algaecides and...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B5/16B05D1/12A01N25/12B27K3/16B27K3/34B27K3/52C09D5/14F26B7/00
CPCA01N25/12Y10T428/25B27K3/15B27K3/16B27K3/22B27K3/34B27K3/36B27K3/52B27K5/02C09D5/14B27K3/08B27K3/26B27K3/32Y10T428/254Y10T428/256Y10T428/2982B27K3/005B27K2240/20B27K2240/30B27K2240/90Y10T428/268Y10T428/31895Y10T428/31989Y10T428/662
Inventor LEACH, ROBERT M.ZHANG, JUN
Owner OSMOSE
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