GB1444102A - Process for treating wood - Google Patents

Process for treating wood

Info

Publication number
GB1444102A
GB1444102A GB4789273A GB4789273A GB1444102A GB 1444102 A GB1444102 A GB 1444102A GB 4789273 A GB4789273 A GB 4789273A GB 4789273 A GB4789273 A GB 4789273A GB 1444102 A GB1444102 A GB 1444102A
Authority
GB
United Kingdom
Prior art keywords
wood
solution
solvent
pressure
boiling
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
GB4789273A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1444102A publication Critical patent/GB1444102A/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
    • B27K3/34—Organic impregnating agents
    • B27K3/38—Aromatic compounds
    • B27K3/40—Aromatic compounds halogenated
    • 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
    • B27K3/0207—Pretreatment of wood before 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
    • B27K3/02—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
    • B27K3/34—Organic impregnating agents
    • B27K3/36—Aliphatic compounds
    • 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

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

1444102 Treating wood DOW CHEMICAL CO 12 Oct 1973 [13 Oct 1972] 47892/73 Heading D1P A process for treating wood comprises preheating the wood by contact with the vapour of an aliphatic chlorinated solvent at 50‹- 125‹C under superatmospheric pressure, immersing the wood in a solution (preferably boiling) of a wood treatment agent in the same solvent under superatmospheric pressure at about the same temperature (50‹-125‹C) for 0.1-10 hours, draining the excess solution and reducing the pressure at least to atmospheric to vaporize the solvent contained in the wood. The solvent vapour pressure is preferably 1.1-5 atmospheres, and that of the solution up to 15 atmospheres. The wood is preferably seasoned, the solvent methylene chloride and the agent pentachlorophenol e.g. at a 2-10% weight concn. The process may be made continuous by the provision of a plurality of wood treatment vessels arranged to operate in staggered cycles so that the vapours from the boiling solution being used to impregnate wood in one vessel are used to preheat new wood in another vessel. A preferred system using three vessels having a common source of pressurised boiling solution, common condensing (high and low pressure) and solvent recycling means and a common solution make up tank, is described.
GB4789273A 1972-10-13 1973-10-12 Process for treating wood Expired GB1444102A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US297464A US3900615A (en) 1972-10-13 1972-10-13 Process for treating wood

Publications (1)

Publication Number Publication Date
GB1444102A true GB1444102A (en) 1976-07-28

Family

ID=23146426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4789273A Expired GB1444102A (en) 1972-10-13 1973-10-12 Process for treating wood

Country Status (10)

Country Link
US (1) US3900615A (en)
JP (1) JPS4971104A (en)
BE (1) BE806021A (en)
CA (1) CA998890A (en)
DE (1) DE2345620A1 (en)
FR (1) FR2202762B1 (en)
GB (1) GB1444102A (en)
IT (1) IT996297B (en)
NL (1) NL7312199A (en)
ZA (1) ZA735226B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO781826L (en) * 1977-05-31 1978-12-01 Forest Prod Util Lab PROCEDURE FOR PRESSURE IMPREGNATION OF WOOD
DK142183A (en) * 1983-03-29 1984-09-30 Steen Moldrup PROCEDURE AND METHOD FOR IMPROVING TREE
US4979960A (en) * 1989-04-14 1990-12-25 Rexius Forest By-Products, Inc. Apparatus for and method of coloring wood by-products
US5485685A (en) * 1992-04-10 1996-01-23 Eiwa Co., Ltd. Wood treating method
US5942008A (en) * 1997-06-11 1999-08-24 Curto; Calogero Method of dyeing wood veneer at elevated temperatures and pressures
IL141214A (en) * 2001-02-01 2004-03-28 Vladimir Kliatzkin Structural components made of composite material
US20090061207A1 (en) * 2004-09-30 2009-03-05 The State Of Queensland Acting Through The Dept. Of Primary Industries And Fisheries Impregnation apparatus and method
JP5060791B2 (en) * 2007-01-26 2012-10-31 独立行政法人森林総合研究所 Method for drying wood, method for penetrating chemicals into wood and drying apparatus
FR2952574B1 (en) * 2009-11-13 2011-11-18 Alex Degaie PROCESS FOR TREATMENT OF CUTTING SHAFT TRONCS BY FIBER IMPREGNATION OF A TREATMENT SOLUTION AND INSTALLATION FOR TREATMENT OF CUTTING TREE TRONCS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860070A (en) * 1954-06-04 1958-11-11 Barber Greene Co Method of drying and impregnating wood
US2931737A (en) * 1957-07-30 1960-04-05 Hickson S Timber Impregnation Impregnation process
US3200003A (en) * 1962-01-11 1965-08-10 Koppers Co Inc Process for impregnating wood with pentachlorophenol and composition therefor
US3685959A (en) * 1969-04-24 1972-08-22 Dow Chemical Co Wood seasoning and modification

Also Published As

Publication number Publication date
US3900615A (en) 1975-08-19
NL7312199A (en) 1974-04-16
CA998890A (en) 1976-10-26
BE806021A (en) 1974-04-12
IT996297B (en) 1975-12-10
FR2202762A1 (en) 1974-05-10
ZA735226B (en) 1974-07-31
FR2202762B1 (en) 1976-04-30
JPS4971104A (en) 1974-07-10
DE2345620A1 (en) 1974-04-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees