IP Library › Granted Patent US 8,460,759
Granted Patent B2
US 8,460,759 · App. 12/240,995 · Granted Jun 11, 2013

Micronized wood preservative formulations

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Quick Facts
Patent No.
US 8,460,759
App. No.
12/240,995
Granted
Jun 11, 2013
Kind
B2
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.

Claims (7)

1. A method for preserving a wood product comprising:

(a) mixing water and a concentrated aqueous wood preservative composition comprising a biocidally effective amount of a dispersion in water of solid particles of an organic biocide between 0.001 and 25 microns to prepare a treating fluid; and

(b) vacuum and/or pressure treating a wood product with the treating fluid.

2. The method of claim 1 , wherein the wood preservative composition further comprises a copper compound.

3. The method of claim 1 , wherein the organic biocide is an azole.

4. The method of claim 1 , wherein the organic biocide is tebuconazole.

5. The method of claim 1 , wherein the said wood product is lumber.

Assignments (11)
RELEASE (REEL 033591 / FRAME 0020) Recorded Jun 28, 2022
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: KOPPERS DELAWARE, INC. (F/K/A KOPPERS INDUSTRIES OF DELAWARE, INC.); KOPPERS PERFORMANCE CHEMICALS INC. (F/K/A OSMOSE, INC.); KOPPERS INC. (F/K/A KOPPERS INDUSTRIES, INC); KOPPERS PERFORMANCE CHEMICALS NEW ZEALAND LIMITED (F/K/A OSMOSE NEW ZEALAND); OSMOSE UTILITIES SERVICES, INC.
Reel/Frame 060448/0192 →
RELEASE OF PATENT SECURITY INTERESTS Recorded Jun 20, 2022
From: PNC BANK, NATIONAL ASSOCIATION
To: KOPPERS DELAWARE, INC.; KOPPERS PERFORMANCE CHEMICALS INC. (F/K/A OSMOSE, INC.); KOPPERS UTILITY AND INDUSTRIAL PRODUCTS INC. (F/K/A COX INDUSTRIES, INC.); KOPPERS INC. (F/K/A KOPPERS INDUSTRIES, INC.)
Reel/Frame 060390/0207 →
SECURITY AGREEMENT Recorded Jun 20, 2022
From: KOPPERS DELAWARE, INC.; KOPPERS PERFORMANCE CHEMICALS INC.
To: PNC BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 060390/0246 →
PATENT, TRADEMARK AND COPYRIGHT SECURITY AGREEMENT Recorded Sep 20, 2017
From: KOPPERS, INC.; KOPPERS HOLDINGS INC.; KOPPERS DELAWARE, INC.; KOPPERS ASIA LLC; KOPPERS CONCRETE PRODUCTS, INC.; CONCRETE PARTNERS, INC.; KOPPERS PERFORMANCE CHEMICALS, INC.; KOPPERS RAILROAD STRUCTURES INC.; KOPPERS WORLD-WIDE VENTURES CORPORATION; KOPPERS VENTURES INC.; KOPPERS-NEVADA LIMITED-LIABILITY COMPANY; KOPPERS NZ LLC; WOOD PROTECTION MANAGEMENT LLC; WOOD PROTECTION LP
To: PNC BANK, NATIONAL ASSOCIATION
Reel/Frame 043920/0523 →
CHANGE OF NAME Recorded Oct 14, 2014
From: OSMOSE, INC.
To: KOPPERS PERFORMANCE CHEMICALS INC.
Reel/Frame 033987/0445 →
RELEASE OF SECURITY INTERST IN INTELLECTUAL PROPERTY Recorded Aug 27, 2014
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: OSMOSE, INC.
Reel/Frame 033645/0778 →
RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY Recorded Aug 27, 2014
From: CREDIT SUISSE AG, CAYMAND ISLANDS BRANCH, AS COLLATERAL AGENT
To: OSMOSE, INC. (FORMERLY OSMOSE WOOD PRESERVING, INC.)
Reel/Frame 033645/0796 →
PATENT, TRADEMARK AND COPYRIGHT SECURITY AGREEMENT Recorded Aug 22, 2014
From: KOPPERS INC.; KOPPERS HOLDINGS INC.; KOPPERS DELAWARE, INC.; KOPPERS ASIA LLC; KOPPERS CONCRETE PRODUCTS, INC.; CONCRETE PARTNERS, INC.; KOPPERS WORLD-WIDE VENTURES CORPORATION; KOPPERS VENTURES LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 033591/0020 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Nov 26, 2012
From: OSMOSE, INC.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 029351/0791 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded May 4, 2012
From: OSMOSE, INC. (FORMERLY OSMOSE WOOD PRESERVING, INC.)
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 028158/0611 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2008
From: LEACH, ROBERT M.; ZHANG, JUN
To: OSMOSE, INC.
Reel/Frame 021645/0562 →