GB600961A - Improvements in or relating to the impregnation of wood with urea-formaldehyde resins - Google Patents
Improvements in or relating to the impregnation of wood with urea-formaldehyde resinsInfo
- Publication number
- GB600961A GB600961A GB24194/45A GB2419445A GB600961A GB 600961 A GB600961 A GB 600961A GB 24194/45 A GB24194/45 A GB 24194/45A GB 2419445 A GB2419445 A GB 2419445A GB 600961 A GB600961 A GB 600961A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wood
- urea
- methylol
- sodium
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0278—Processes; Apparatus involving an additional treatment during or after impregnation
- B27K3/0285—Processes; Apparatus involving an additional treatment during or after impregnation for improving the penetration of the impregnating fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
Abstract
600,961. Impregnating wood; proofing permeable materials. DU PONT DE NEMOURS & CO., E. I. Sept. 19, 1945, No. 24194. Convention date, Sept. 20, 1944. [Class 140] Wooden objects, including veneers and plywood, are impregnated with a neutral to slightly alkaline solution of a methylol urea in water or an aqueous organic solvent while maintaining the methylol urea substantially entirely in a monomeric state, drying, and then heating the surface of the dried, impregnated wood to 240-350‹F. for ¢-5 minutes at a pressure in excess of the crushing pressure of the wood at that temperature. The product has a compressed, hardened surface that can be readily polished and is resistant to weak acids, and the weather. The ratio of formaldehyde to urea may be between 1.1 to 1 and 1.75 to 1. A minor proportion of melamine may be included, and the solution may contain a polymerisation accelerator, or a dye. The drying may be by air-drying, kilndrying, or a combination of both methods. Aqueous solvents specified are aqueous methanol, ethanol, propanol, glycols, glycol ethers, dioxolane and dioxane. Buffers such as di- or tri-ethanolamine, sodium polymethacrylate, hexamethylene tetramine, monomethanolamine, sodium acetate, borax, and mono-sodium phosphate may be added. Minor proportions of other modifying materials may be added, such as phenol, dicyandiamide, cyanamide, guanidine, thiourea, methylol phenol, methylol melamine, alkyl ethers of dimethylol urea, hexamethylene tetramine, ammonium thiocyanate, dextrose, beta, beta-dihydroxy diethyl formal, dioxolane, glycols, glycerol formals, polydioxolane, dimethylol diglycolamide, bismethoxymethyl adipamide, methylol hydroxy acetamide, methylene diformamide, N-ethylol formamide, hydroxyacetamide, diethanolamine, diethylaminoethyl methacrylate, 5, 5 - dialkyl hydantoins, alkyl ureas, methoxymethoxyethyl urethane, methylol guanidine, thioammeline, 1, 3, 5-alkoxyalkoxy-aminotriazines, ammeline, and ammelide. Fire retardants such as boric acid, borax, and sodium phosphate, and materials to prevent attack by organisms, including sodium chlorophenolates, copper or mercury naphthenate, salts of monochlorophenyl phenols, di-, tri-, tetra-, and pentachlorophenols, 2-chloro-6-cyclohexylphenol, tetrachlorocresol, 4-chloro-5- xylenol, dinitrophenol, fluorides, chromates, and arsenates. Moisture repelling agents and porefillers such as long chain amidomethyl-pyridinium chloride, wax, glycerine, polyolefines, polyethylene ethers, polyvinyl resins, insoluble soaps, anthracene, rosin, rosin ester, alkyd resin, chlorinated naphthalene, and titanium oxide may also be added to the solution. The wood may be in the form of lumber or of shaped objects such as telephone poles, railway ties, barrel staves, window sashes, shuttle blocks, drawtwister tubes, and bobbins. Green wood may first be treated with urea solution. The wood may be impregnated at ordinary or slightly raised temperature by long soaking, or with the aid of vacuum and pressure which may alternate several times. The pressure surfaces may be of stainless steel coated with a zinc soap. Specifications 549,335 and 584,380 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US600961XA | 1944-09-20 | 1944-09-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB600961A true GB600961A (en) | 1948-04-23 |
Family
ID=22027327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24194/45A Expired GB600961A (en) | 1944-09-20 | 1945-09-19 | Improvements in or relating to the impregnation of wood with urea-formaldehyde resins |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB600961A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE933358C (en) * | 1951-07-18 | 1955-09-22 | Emil Postel | Process for finishing wood |
GB2148344A (en) * | 1983-09-30 | 1985-05-30 | Melamine Chemicals Inc | Wood pulp incorporating melamine or ammeline |
WO2006092331A2 (en) * | 2005-03-04 | 2006-09-08 | Basf Aktiengesellschaft | Method for producing wood-base materials |
WO2007033988A1 (en) * | 2005-09-23 | 2007-03-29 | Basf Se | Use of modified wood materials for producing articles |
WO2007074136A1 (en) * | 2005-12-23 | 2007-07-05 | Basf Se | Method for the production of modified veneer materials |
WO2008095635A1 (en) * | 2007-02-03 | 2008-08-14 | Alzchem Trostberg Gmbh | Method of treating wooden parts |
CN100443273C (en) * | 2004-12-16 | 2008-12-17 | 龙有前 | Wood protective agent |
WO2011085453A1 (en) * | 2010-01-18 | 2011-07-21 | Arch Wood Protection Pty Ltd | Reduced drying carrier formulation |
CN102658573A (en) * | 2012-05-08 | 2012-09-12 | 河北爱美森木材加工有限公司 | Fast growing wood steeping liquor, method for preparing fast growing wood steeping liquor and method for steeping wood |
CN102658572A (en) * | 2012-05-08 | 2012-09-12 | 河北爱美森木材加工有限公司 | Impregnation liquid for fast growing wood |
AU2016219540B2 (en) * | 2011-01-18 | 2017-08-24 | Arch Wood Protection Pty Ltd | Reduced drying carrier formulation |
CN114654550A (en) * | 2022-01-10 | 2022-06-24 | 东北林业大学 | Flame-retardant wood, preparation method thereof and application of metal halide |
-
1945
- 1945-09-19 GB GB24194/45A patent/GB600961A/en not_active Expired
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE933358C (en) * | 1951-07-18 | 1955-09-22 | Emil Postel | Process for finishing wood |
GB2148344A (en) * | 1983-09-30 | 1985-05-30 | Melamine Chemicals Inc | Wood pulp incorporating melamine or ammeline |
CN100443273C (en) * | 2004-12-16 | 2008-12-17 | 龙有前 | Wood protective agent |
WO2006092331A2 (en) * | 2005-03-04 | 2006-09-08 | Basf Aktiengesellschaft | Method for producing wood-base materials |
WO2006092331A3 (en) * | 2005-03-04 | 2008-03-06 | Basf Ag | Method for producing wood-base materials |
AU2006219949B2 (en) * | 2005-03-04 | 2011-06-02 | Basf Se | Method for producing wood-base materials |
US7976668B2 (en) | 2005-03-04 | 2011-07-12 | Basf Aktiengesellschaft | Method for producing wood-base materials |
WO2007033988A1 (en) * | 2005-09-23 | 2007-03-29 | Basf Se | Use of modified wood materials for producing articles |
WO2007074136A1 (en) * | 2005-12-23 | 2007-07-05 | Basf Se | Method for the production of modified veneer materials |
US8445072B2 (en) | 2007-02-03 | 2013-05-21 | Alzchem Trostberg Gmbh | Method for treating wooden parts |
WO2008095635A1 (en) * | 2007-02-03 | 2008-08-14 | Alzchem Trostberg Gmbh | Method of treating wooden parts |
WO2011085453A1 (en) * | 2010-01-18 | 2011-07-21 | Arch Wood Protection Pty Ltd | Reduced drying carrier formulation |
US9045681B2 (en) | 2010-01-18 | 2015-06-02 | Arch Wood Protection Pty Ltd | Reduced drying carrier formulation |
AU2016219540B2 (en) * | 2011-01-18 | 2017-08-24 | Arch Wood Protection Pty Ltd | Reduced drying carrier formulation |
CN102658572A (en) * | 2012-05-08 | 2012-09-12 | 河北爱美森木材加工有限公司 | Impregnation liquid for fast growing wood |
CN102658573A (en) * | 2012-05-08 | 2012-09-12 | 河北爱美森木材加工有限公司 | Fast growing wood steeping liquor, method for preparing fast growing wood steeping liquor and method for steeping wood |
CN102658572B (en) * | 2012-05-08 | 2014-05-28 | 河北爱美森木材加工有限公司 | Impregnation liquid for fast growing wood |
CN102658573B (en) * | 2012-05-08 | 2014-07-30 | 河北爱美森木材加工有限公司 | Fast growing wood steeping liquor, method for preparing fast growing wood steeping liquor and method for steeping wood |
CN114654550A (en) * | 2022-01-10 | 2022-06-24 | 东北林业大学 | Flame-retardant wood, preparation method thereof and application of metal halide |
CN114654550B (en) * | 2022-01-10 | 2023-09-26 | 东北林业大学 | Flame-retardant wood, preparation method thereof and application of metal halide |
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