GB1377061A - Method of treating wood - Google Patents

Method of treating wood

Info

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
Application number
GB5569470A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rentokil Ltd
Original Assignee
Rentokil Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rentokil Ltd filed Critical Rentokil Ltd
Priority to GB5569470A priority Critical patent/GB1377061A/en
Priority to SE7114937A priority patent/SE381600B/en
Priority to DE19712158078 priority patent/DE2158078A1/en
Priority to AU36072/71A priority patent/AU470565B2/en
Priority to NL7116108A priority patent/NL7116108A/xx
Priority to CH1699171A priority patent/CH564410A5/xx
Priority to BE775719A priority patent/BE775719A/en
Priority to FR7141817A priority patent/FR2115945A5/fr
Priority to ZA717872A priority patent/ZA717872B/en
Publication of GB1377061A publication Critical patent/GB1377061A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, 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
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34Organic impregnating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, 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
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02Processes; Apparatus
    • B27K3/08Impregnating by pressure, e.g. vacuum impregnation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, 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
    • B27K2240/00Purpose of the treatment
    • B27K2240/30Fireproofing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, 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
    • B27K5/00Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/02Staining or dyeing wood; Bleaching wood
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/02Halogenated 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.
GB5569470A 1970-11-23 1970-11-23 Method of treating wood Expired GB1377061A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US4678686A (en) Treatment of formaldehyde-containing wood panel products
DE3874022T2 (en) GAS OR STEAM PHASE TREATMENT OF WOOD WITH BORON PRESERVATIVES.
GB1377061A (en) Method of treating wood
US3959529A (en) Wood treating process
NL155211B (en) PROCESS FOR THE DIMENSION STABILIZATION OF WOOD.
US20020178608A1 (en) Method and apparatus for the production of lumber identical to natural Bog oak
US3671299A (en) Method for impregnating wood
US3460979A (en) Process of impregnating capillary materials such as wood,under pressure in a closed vessel
US4548839A (en) Method for wood preservation
US2500783A (en) Process of treating wood
US1602577A (en) Process of preserving wood
US2567292A (en) Method of impregnating wood with chemical solutions
US2762721A (en) Method of preserving wood and resultant product
USRE33121E (en) Method and composition for treating wood with pentachlorophenol
US1983248A (en) Preservation of vegetable cellulosic material
US2503443A (en) Process for impregnating wood with sodium thiosulfate
US2054399A (en) Wood preservation and mode of treatment
US3023125A (en) Process of treating coal tar impregnated wood with a solution of a compound of boron trifluoride
AT309788B (en) Method for impregnating bodies made of a material with a cellular structure
EP0039887B1 (en) Method and composition for treating wood with pentachlorophenol
US1838291A (en) Process of conditioning wood for impregnation with preservatives
US992918A (en) Process of impregnating wood.
CA1048407A (en) Wood treating process
US688932A (en) Process of preserving wood.
US1928805A (en) Process of impregnating fiber board with alpha salt

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee