GB1124392A - Process of impregnating capillary-containing materials such as wood under pressure ina closed vessel - Google Patents

Process of impregnating capillary-containing materials such as wood under pressure ina closed vessel

Info

Publication number
GB1124392A
GB1124392A GB12800/66A GB1280066A GB1124392A GB 1124392 A GB1124392 A GB 1124392A GB 12800/66 A GB12800/66 A GB 12800/66A GB 1280066 A GB1280066 A GB 1280066A GB 1124392 A GB1124392 A GB 1124392A
Authority
GB
United Kingdom
Prior art keywords
vapour
sodium fluoride
wood
gas
liquid
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
GB12800/66A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1124392A publication Critical patent/GB1124392A/en
Expired legal-status Critical Current

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
    • B27K3/02—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
    • 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
    • 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
    • B27K3/44—Tar; Mineral oil
    • B27K3/48—Mineral oil
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/4935—Impregnated naturally solid product [e.g., leather, stone, etc.]
    • Y10T428/662—Wood timber product [e.g., piling, post, veneer, etc.]

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Impregnation of wood with a liquid in a pressure vessel is assisted by evolution of gas or vapour from the liquid during the impregnation at a pressure below that applied to the wood. The gas or vapour may be methylene chloride (from tar oil) or carbon dioxide (from aqueous sodium fluoride), may be introduced into the wood before or with the impregnating liquid, and may be evolved by heating. Carbon dioxide may alternatively be formed in situ by first introducing formic acid vapour and then a solution of alkali metal carbonate or bicarbonate containing sodium fluoride; or by introducing acid and salt solutions, one of which contains sodium fluoride, in either order. The gas or vapour is removed by application of a vacuum.ALSO:Impregnation of wood with a liquid in a pressure vessel is assisted by evolution of gas or vapour from the liquid during the impregnation at a pressure below that applied to the wood. The liquid may be tar oil or a solution of sodium fluoride or a mixture of sodium fluoride, sodium bichromate, and disodium arsenate. The gas or vapour may be methylene chloride (from tar oil) or carbon dioxide (from sodium fluoride solution), may be introduced into the wood before or with the impregnating liquid, and may be evolved by heating. Carbon dioxide may alternatively be formed in situ by first introducing formic acid vapour and then a solution of alkali metal carbonate or bicarbonate containing sodium fluoride; or by introducing acid and salt solutions, one of which contains sodium fluoride, in either order. The gas or vapour is removed by application of a vacuum.
GB12800/66A 1965-03-23 1966-03-23 Process of impregnating capillary-containing materials such as wood under pressure ina closed vessel Expired GB1124392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT263665A AT262588B (en) 1965-03-23 1965-03-23 Process for impregnating capillary materials, e.g. B. wood, in the boiler pressure process

Publications (1)

Publication Number Publication Date
GB1124392A true GB1124392A (en) 1968-08-21

Family

ID=3537796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12800/66A Expired GB1124392A (en) 1965-03-23 1966-03-23 Process of impregnating capillary-containing materials such as wood under pressure ina closed vessel

Country Status (5)

Country Link
US (1) US3460979A (en)
AT (1) AT262588B (en)
DE (1) DE1642197A1 (en)
FR (1) FR1475121A (en)
GB (1) GB1124392A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1509000A (en) * 1974-06-28 1978-04-26 Research Corp Composition and process for treating timber
US4413024A (en) * 1980-03-17 1983-11-01 Fuji Kogyo Company, Limited Method for chemical treatment of woods
US5797332A (en) * 1995-08-11 1998-08-25 Callidus Technologies, Inc. Closed loop gasification drying system
FR2770171B1 (en) * 1997-10-27 1999-11-19 Commissariat Energie Atomique METHOD AND INSTALLATION FOR TREATING POROUS MATERIAL WITH AN IMPREGNATION PRODUCT
US6471608B1 (en) 2001-10-11 2002-10-29 Joseph D. Mitchell Breakage-resistant baseball bat and production thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1937417A (en) * 1930-08-20 1933-11-28 Warren Brothers Company Method of impregnating concrete bodies and porous ceramic products with bituminous material
US1993434A (en) * 1932-12-13 1935-03-05 Hercules Powder Co Ltd Method for impregnating carbonaceous material
US2740728A (en) * 1954-01-25 1956-04-03 Dow Chemical Co Production of resin-impregnated porous bodies

Also Published As

Publication number Publication date
FR1475121A (en) 1967-03-31
DE1642197A1 (en) 1971-07-08
AT262588B (en) 1968-06-25
US3460979A (en) 1969-08-12

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