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1. WO1996005953 - CHEMICALLY MODIFIED WOOD

Publication Number WO/1996/005953
Publication Date 29.02.1996
International Application No. PCT/SE1995/000925
International Filing Date 15.08.1995
Chapter 2 Demand Filed 19.03.1996
IPC
B27N 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
1Pretreatment of moulding material
C08H 8/00 2010.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
HDERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
8Macromolecular compounds derived from lignocellulosic materials
CPC
B27N 1/00
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
1Pretreatment of moulding material
C08H 8/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
HDERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
8Macromolecular compounds derived from lignocellulosic materials
Y10T 428/2982
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
29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
2982Particulate matter [e.g., sphere, flake, etc.]
Y10T 428/2998
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
29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
2982Particulate matter [e.g., sphere, flake, etc.]
2991Coated
2998including synthetic resin or polymer
Y10T 428/31895
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
31504Composite [nonstructural laminate]
31855Of addition polymer from unsaturated monomers
3188Next to cellulosic
31895Paper or wood
Y10T 428/31899
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
31504Composite [nonstructural laminate]
31855Of addition polymer from unsaturated monomers
3188Next to cellulosic
31895Paper or wood
31899Addition polymer of hydrocarbon[s] only
Applicants
  • STORA KOPPARBERGS BERGSLAGS AB [SE/SE]; S-791 80 Falun, SE (AllExceptUS)
  • DAHLIN, Jörgen [SE/SE]; SE (UsOnly)
  • NYBERG, Ulf [SE/SE]; SE (UsOnly)
Inventors
  • DAHLIN, Jörgen; SE
  • NYBERG, Ulf; SE
Agents
  • AWAPATENT AB; P.O. Box 45086 S-104 30 Stockholm, SE
Priority Data
9402795-022.08.1994SE
Publication Language English (EN)
Filing Language Swedish (SV)
Designated States
Title
(EN) CHEMICALLY MODIFIED WOOD
(FR) BOIS CHIMIQUEMENT MODIFIE
Abstract
(EN)
A granulate of wood or some other cellulose-containing material, pieces or particles of said material being at least partially esterified with 10-50 % of a dicarboxylic acid anhydride and then impregnated with 2-25 % of a polyol, the granulate being stable in storage and being possible to hot press or hot form later. A method for preparing the granulate by esterification at 80-160 °C and, subsequently, impregnation at 150 °C at most. A method for manufacturing formed articles by hot pressing or hot forming of the granulate, without the presence of a formaldehyde-containing adhesive and preferably without the presence of any other type of adhesive.
(FR)
L'invention concerne un granulat de bois ou un autre matériau à base de cellulose, des pièces ou des particules dudit matériau au moins partiellement estérifiés avec 1 à 50 % d'un anhydride d'acide dicarboxylique et imprégné avec 2-25 % de polyole. Le granulat est stable lors de son stockage et peut être comprimé à chaud ou formé à chaud ultérieurement. L'invention traite aussi d'un procédé pour préparer le granulat par estérification à 80-160 °C et pour l'imprégner à 150 °C au maximum. L'invention a aussi pour objet un procédé de fabrication d'articles formés par compression ou par formage à chaud des granulats, sans adhésif à base de formaldéhyde, et de préférence, sans adhésif de quelque type que ce soit.
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