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1. WO2000041861 - WOOD TREATMENT PROCESS

Publication Number WO/2000/041861
Publication Date 20.07.2000
International Application No. PCT/US2000/001218
International Filing Date 19.01.2000
Chapter 2 Demand Filed 17.08.2000
IPC
B27K 3/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
3Impregnating wood, e.g. for protection 
02Processes; Apparatus
08Impregnating by pressure
B27K 3/34 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
3Impregnating wood, e.g. for protection 
34Organic impregnating agents
CPC
B27K 2240/70
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR
2240Purpose of the treatment
70Hydrophobation treatment
B27K 3/0207
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR
3Impregnating wood, ; e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
02Processes; Apparatus
0207Pretreatment of wood before impregnation
B27K 3/08
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR
3Impregnating wood, ; e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
02Processes; Apparatus
08Impregnating by pressure ; , e.g. vacuum impregnation
B27K 3/36
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR
3Impregnating wood, ; e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
34Organic impregnating agents
36Aliphatic compounds
Y10T 428/662
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
4935Impregnated naturally solid product [e.g., leather, stone, etc.]
662Wood timber product [e.g., piling, post, veneer, etc.]
Applicants
  • CHEMICAL SPECIALTIES, INC. [US/US]; Suite 250 200 East Woodlawn Road Charlotte, NC 28217, US
Inventors
  • PRESTON, Alan, F.; US
  • CUI, Futong; US
  • ZAHORA, Andrew, R.; US
Agents
  • KLAUBER, Stefan, J.; Klauber & Jackson 411 Hackensack Avenue Hackensack, NJ 07601, US
Priority Data
09/232,97219.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) WOOD TREATMENT PROCESS
(FR) PROCESSUS DE TRAITEMENT DU BOIS
Abstract
(EN)
A process for treating a wood substrate with a water-based formulation containing a wax in order to confer water repellency to the substrate comprising the steps of: (a) placing the substrate in a treatment vessel and reducing the pressure in the vessel to remove air in the pores of the substrate; (b) contacting the substrate in the vessel, while reduced pressure is present in the vessel, with the formulation to allow the formulation to flow into said pores, said contacting being carried out at a temperature at or above that required to cause the wax to change into a molten state; (c) applying a positive pressure to the vessel to force ther formulation into said pores; and (d) releasing the pressure in the vessel and removing the resultant wood substrate from the vessel.
(FR)
La présente invention concerne un processus de traitement d'un substrat en bois avec une formulation aqueuse à base de cire, de manière à conférer à ce substrat un caractère hydrofuge. Ce procédé consiste à: (a) placer ce substrat dans une cuve de traitement et réduire la pression dans cette cuve pour éliminer l'air contenu dans les pores du substrat; (b) mettre en contact le substrat avec la formulation dans la cuve en situation de pression détendue afin de permettre l'écoulement de cette formulation dans lesdits pores, cette mise en contact étant effectuée à une température égale ou supérieure à la température nécessaire pour que la cire fonde, (c) appliquer une pression positive dans la cuve pour forcer la formulation à entrer dans les pores; et enfin, (d) libérer la pression dans la cuve et retirer de celle-ci le substrat en bois obtenu.
Also published as
NO20013533
Latest bibliographic data on file with the International Bureau