GB286725A - Improved process for treating wood and like materials - Google Patents

Improved process for treating wood and like materials

Info

Publication number
GB286725A
GB286725A GB7188/28A GB718828A GB286725A GB 286725 A GB286725 A GB 286725A GB 7188/28 A GB7188/28 A GB 7188/28A GB 718828 A GB718828 A GB 718828A GB 286725 A GB286725 A GB 286725A
Authority
GB
United Kingdom
Prior art keywords
solution
wood
vessel
lbs
timber
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
GB7188/28A
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.)
INTERNAT FIREPROOF PRODUCTS CO
Original Assignee
INTERNAT FIREPROOF PRODUCTS CO
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 INTERNAT FIREPROOF PRODUCTS CO filed Critical INTERNAT FIREPROOF PRODUCTS CO
Publication of GB286725A publication Critical patent/GB286725A/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
    • B27K3/16—Inorganic impregnating agents
    • B27K3/32—Mixtures of different inorganic 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
    • 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
    • B27K3/02—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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/007—Treating of wood not provided for in groups B27K1/00, B27K3/00 using pressure

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

286,725. International Fireproof Products Corporation, (Assignees of Vivas, F. S.). March 11, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Fireproofing; proofing against bacteria etc.; proofing processes.-Wood and other material is fireproofed and preserved from decay by treatment successivelv with solutions of chlorides and boric acid and of metallic sulphates respectively, so as to precipitate, insoluble sulphates in the wood. Resinous wood may be first treated to remove the resin, for instance by means of sodium hydrate. In the.process described, the wood is first treated in a closed vessel with a solution containing 8 ounces of sodium hydrate to the gallon of water for about 1“ hours at 212‹ F. The solution is drawn off and a vacuum created in the vessel. A solution containing 2¢ lbs. of calcium chloride, ¢ lb. of ammonium chloride, and ¢ lb. of boric acid to each gallon of water is then run into the container, with admitting air. The solution is placed under a pressure of 150 lbs. per square inch, and the temperature maintained at 175‹ F., except in the case of white oak, when the solution is used cold. Pressure is maintained until the wood has absorbed a volume of solution corresponding to 220 lbs. of solids per thousand cubic feet of timber, the volume absorbed being read off by means of a gauge glass on the vessel. The solution is withdrawn from the retort and hot air blown in for an hour to dry the timber. A solution containing 4 ozs. of zinc sulphate and 4 ozs. of aluminium sulphate to the gallon of water is then run into the vessel and placed under a pressure of about 150 lbs. per square inch, maintained for one to two hours. The timber is then treated with hot air. for about 6 hours. If the timber is for use in or near water, aluminium sulphate in the second solution is replaced by copper sulphate. The treatment with sodium hydrate solution saponifies the resins of the wood, which collect at the bottom of the vessel and are drawn off as a by-product.
GB7188/28A 1927-03-11 1928-03-08 Improved process for treating wood and like materials Expired GB286725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US286725XA 1927-03-11 1927-03-11

Publications (1)

Publication Number Publication Date
GB286725A true GB286725A (en) 1929-06-06

Family

ID=21844794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7188/28A Expired GB286725A (en) 1927-03-11 1928-03-08 Improved process for treating wood and like materials

Country Status (1)

Country Link
GB (1) GB286725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186894A (en) * 1985-11-15 1987-08-26 Matsushita Electric Works Ltd Method of manufacturing modified wood material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186894A (en) * 1985-11-15 1987-08-26 Matsushita Electric Works Ltd Method of manufacturing modified wood material
GB2186894B (en) * 1985-11-15 1989-10-11 Matsushita Electric Works Ltd Method of manufacturing modified wood material

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