GB1377061A - Method of treating wood - Google Patents
Method of treating woodInfo
- Publication number
- GB1377061A GB1377061A GB5569470A GB5569470A GB1377061A GB 1377061 A GB1377061 A GB 1377061A GB 5569470 A GB5569470 A GB 5569470A GB 5569470 A GB5569470 A GB 5569470A GB 1377061 A GB1377061 A GB 1377061A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- solution
- vessel
- wood
- tank
- 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
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
-
- 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
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- 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
- B27K2240/00—Purpose of the treatment
- B27K2240/30—Fireproofing
-
- 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
- B27K5/02—Staining or dyeing wood; Bleaching wood
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/02—Halogenated hydrocarbons
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
1377061 Impregnating wood RENTOKIL Ltd 23 Nov 1971 [23 Nov 1970] 55694/70 Heading DIP A process for the chemical treatment of wood e.g. in the form of timber, plywood or chipboard, comprises a first stage in which the wood is impregnated in a treatment vessel with a solution of a treatment agent in at least one halogenated hydrocarbon solvent which is inert to the agent, the solution being forced into the wood by a pressure differential, and a second stage in which, after removal of excess solution, the solvent remaining in the wood is removed therefrom by passing heated air through the vessel so as to cause evaporation of the solvent, the solvent being recovered. The solvent may be dichloromethane, trichloroethylene, perchloroethylene or fluorotrichloromethane. The impregnant may be phosphorus oxychloride, a boric or phosphoric acid ester, a wax or a film forming resin or a mixture of these. Solvent evaporation may be assisted by reducing the pressure in the vessel. The bulk of the evaporated solvent may be recovered by cooling or pressurising and cooling. The remainder may be removed by absorption on carbon followed by steam stripping and condensation. The process may be a full or empty cell process e.g. a Bethell, Rueping or Lowry process, or a double vacuum process. In Fig. 1 a piece of wood &c in a treatment vessel 2 is impregnated with solution previously run in from a tank 3 through a valve V4, under pressure provided a pump 4 connected through a valve V6 to a calibrated tank 5 which registers the gross uptake of solution. After removal of excess solution by a pump 6 back to the tank 3, air is circulated by a pump 7 through a heater 8 and the vessel 2 and evaporates solvent from the wood. The solvent vapour is collected in a condenser 9 and the condensed liquid run through a valve V9 into a tank 10 where it is admixed with further treatment agent prior to being returned to the tank 3. The level in the calibrated tank is returned to a desired point by regulating valve V7. In Fig. 2 wood &c 1 in a vessel 2 is impregnated with treatment solution by applying a pressure to the solution in a tank 3 which forces the solution into the vessel through a valve V11, air being vented through a valve V12. After impregnation, the compression is released and the solution is allowed to run back into the tank. Heated air is circulated through the vessel by a pump 7 and solvent is condensed at 9. Further solvent is removed by passing fresh air through the vessel via valve 14 and into a carbon recovery plant 11. The pressures applied during impregnation may be 10 or 20 p.s.i.g. The air may be at about 60‹C and 22‹C on leaving the heater and condenser respectively.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5569470A GB1377061A (en) | 1970-11-23 | 1970-11-23 | Method of treating wood |
SE7114937A SE381600B (en) | 1970-11-23 | 1971-11-22 | PROCEDURE FOR TREATING WOOD WITH A SOLUTION OF TREATMENT IN A HALOGENERATED ORGANIC SOLVENT |
DE19712158078 DE2158078A1 (en) | 1970-11-23 | 1971-11-23 | Process for the chemical treatment of wood or wood-based materials |
AU36072/71A AU470565B2 (en) | 1970-11-23 | 1971-11-23 | Method of treating wood |
NL7116108A NL7116108A (en) | 1970-11-23 | 1971-11-23 | |
CH1699171A CH564410A5 (en) | 1970-11-23 | 1971-11-23 | |
BE775719A BE775719A (en) | 1970-11-23 | 1971-11-23 | WOOD TREATMENT PROCESS |
FR7141817A FR2115945A5 (en) | 1970-11-23 | 1971-11-23 | |
ZA717872A ZA717872B (en) | 1970-11-23 | 1971-11-23 | Method of treating wood |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5569470A GB1377061A (en) | 1970-11-23 | 1970-11-23 | Method of treating wood |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1377061A true GB1377061A (en) | 1974-12-11 |
Family
ID=10474617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5569470A Expired GB1377061A (en) | 1970-11-23 | 1970-11-23 | Method of treating wood |
Country Status (9)
Country | Link |
---|---|
AU (1) | AU470565B2 (en) |
BE (1) | BE775719A (en) |
CH (1) | CH564410A5 (en) |
DE (1) | DE2158078A1 (en) |
FR (1) | FR2115945A5 (en) |
GB (1) | GB1377061A (en) |
NL (1) | NL7116108A (en) |
SE (1) | SE381600B (en) |
ZA (1) | ZA717872B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010102338A1 (en) * | 2009-03-13 | 2010-09-16 | The State Of Queensland Acting Through The Department Of Employment, Economic Development And Innovation | Hydrofluoroalkanes as carrier solvents for timber preservation |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK142183A (en) * | 1983-03-29 | 1984-09-30 | Steen Moldrup | PROCEDURE AND METHOD FOR IMPROVING TREE |
AU598911B2 (en) * | 1987-02-19 | 1990-07-05 | Timber Treatment Industries Ltd | Treatment of timber |
CN112829017B (en) * | 2021-01-04 | 2022-12-16 | 唐山翔宇家俱有限公司 | Furniture board cutting device with function is collected to piece |
-
1970
- 1970-11-23 GB GB5569470A patent/GB1377061A/en not_active Expired
-
1971
- 1971-11-22 SE SE7114937A patent/SE381600B/en unknown
- 1971-11-23 ZA ZA717872A patent/ZA717872B/en unknown
- 1971-11-23 AU AU36072/71A patent/AU470565B2/en not_active Expired
- 1971-11-23 DE DE19712158078 patent/DE2158078A1/en active Pending
- 1971-11-23 CH CH1699171A patent/CH564410A5/xx not_active IP Right Cessation
- 1971-11-23 BE BE775719A patent/BE775719A/en unknown
- 1971-11-23 FR FR7141817A patent/FR2115945A5/fr not_active Expired
- 1971-11-23 NL NL7116108A patent/NL7116108A/xx not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010102338A1 (en) * | 2009-03-13 | 2010-09-16 | The State Of Queensland Acting Through The Department Of Employment, Economic Development And Innovation | Hydrofluoroalkanes as carrier solvents for timber preservation |
US8603640B2 (en) | 2009-03-13 | 2013-12-10 | Michael Kennedy | Hydrofluoroalkanes as carrier solvents for timber preservation |
Also Published As
Publication number | Publication date |
---|---|
SE381600B (en) | 1975-12-15 |
ZA717872B (en) | 1972-08-30 |
NL7116108A (en) | 1972-05-25 |
BE775719A (en) | 1972-03-16 |
AU470565B2 (en) | 1973-05-31 |
CH564410A5 (en) | 1975-07-31 |
DE2158078A1 (en) | 1972-06-29 |
FR2115945A5 (en) | 1972-07-07 |
AU3607271A (en) | 1973-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |