Micronized wood preservative formulations

Inactive Publication Date: 2008-08-21
OSMOSE
View PDF27 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]Also provided is a method for using the compositions of the present invention. The method comprises the step of contacting a cellulosic material, such as wood, with a composition of the present invention. When the compositions of the present invention are used for preservation of wood, there is minimal leaching of the metal or metal and the biocide from wood.
[0015]In one embodiment, the preferred metal for wood preserving type appl

Problems solved by technology

The disadvantage of using ammonia as a copper solubilizing agent lies in the strong odor of ammonia.
Additionally, copper ammonia preservatives can affect the appearance of the treated wood giving surface residues and undesirable color.
However, copper amine based preservatives have higher copper loss due to leaching as compared to traditional copper based preservatives such as chromated copper arsenate (CCA).
However, many organic biocides currently in use are not water soluble.
However, the solubilizing agents, surfactants, and wetting agents are costly and the use of these products may result in

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micronized wood preservative formulations
  • Micronized wood preservative formulations
  • Micronized wood preservative formulations

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050]500 g of copper hydroxide were added to a container containing 1091.7 grams of water and 75.0 grams of commercially available dispersants / wetting agents. The mixture was mechanically stirred for 5 minutes and then placed in a grinding mill. The sample was ground for about 30 minutes, and a stable dispersion containing about 30% copper hydroxide was obtained. The particle size of the copper hydroxide dispersion was analyzed by Horiba LA-910 Particle Size Distribution Analyzer (PSDA). The average particle size was 0.195 micrometers (um) with a distribution range of 0.04 um to 1.5 um.

example 2

[0051]1000 grams of basic copper carbonate was mixed with 2158.3 grams of water and 175.0 grams of commercially available wetting agents / dispersants. The mixture was mechanically stirred for 10 minutes. The mixture was then placed in a grinding mill and ground for about 20 minutes. A stable dispersion was obtained with an average particle size of 0.199 micrometers.

example 3

[0052]1000 grams of basic copper carbonate and 20 grams of tebuconazole were mixed with 3780 grams of water and 200 grams of wetting agents / dispersants. The mixture was mechanically stirred for about 10 minutes. The mixture was then placed in a grinding mill and ground for about 30 minutes. A stable dispersion containing 25% basic copper carbonate and 0.5% tebuconazole was obtained with an average particle size of 0.200 micrometers.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Login to view more

Abstract

The present invention provides wood preservative compositions comprising micronized particles. In one embodiment, the composition comprises dispersions of micronized metal or metal compounds. In another embodiment, the wood preservative composition comprises an inorganic component comprising a metal or metal compound and organic biocide. When the composition comprises an inorganic component and an organic biocide, the inorganic component or the organic biocide or both are present as micronized particles. When compositions of the present invention are used for preservation of wood, there is minimal leaching of the metal and biocide from the wood.

Description

[0001]This application claims priority to U.S. Provisional Application No. 60 / 461,547, filed Apr. 9, 2003. This application also claims priority to U.S. Provisional Application No. 60 / 518,994, filed Nov. 11, 2003, the disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention is related generally to the field of wood preservatives and more particularly to a wood preservative composition comprising micronized particles.BACKGROUND OF THE INVENTION[0003]Wood preserving compositions are well known for preserving wood and other cellulose-based materials, such as paper, particleboard, textiles, rope, etc., against organisms responsible for the destruction of wood, including fungi and insects. Many conventional wood preserving compositions contain copper amine complexes. Copper amine complexes have been used in the past because the amine solubilizes the copper in aqueous solutions. The copper in such copper amine complexes is obtained from a v...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A01N25/12C07C255/51A01P15/00A01N37/34A01N25/00A01N25/04A01N33/00A01N43/00A01N55/02A01N59/20B27K
CPCA01N25/04Y10T428/268A01N59/20B27K3/005B27K3/22B27K3/343B27K3/52A01N43/653B27K3/007A01N2300/00Y10T428/31703Y10T428/662Y10T428/31989A01N55/02A01N25/00A01N33/00A01N43/00A01N33/12B27K2240/20
Inventor LEACH, ROBERT M.ZHANG, JUN
Owner OSMOSE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap