GB719245A - Process for treating wood - Google Patents

Process for treating wood

Info

Publication number
GB719245A
GB719245A GB8520/52A GB852052A GB719245A GB 719245 A GB719245 A GB 719245A GB 8520/52 A GB8520/52 A GB 8520/52A GB 852052 A GB852052 A GB 852052A GB 719245 A GB719245 A GB 719245A
Authority
GB
United Kingdom
Prior art keywords
wood
chlorine dioxide
treatment
dried
gas
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
GB8520/52A
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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Publication of GB719245A publication Critical patent/GB719245A/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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/02—Staining or dyeing wood; Bleaching wood
    • 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
    • B27K1/00—Damping wood
    • 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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/001—Heating
    • 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
    • B27K5/04—Combined bleaching or impregnating and drying of wood

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

719,245. Treating wood. OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AERONAUTIQUES (O.N.E.R.A.). April 3, 1952 [April 3, 1951; March 14, 1952], No. 8520/52. Drawings to Specification. Class 140. Wood, e.g. veneer, is reduced to its cellulosic structure by treatment with chlorine dioxide either as a gas, or by immersion in an aqueous solution of sodium chlorite containing an organic acid reacting therewith to yield chlorine dioxide, the treatment being continued until substantially all the lignin is removed, the resulting cellulosic structure being then steam treated and/or washed and dried. The product may be used as such, or may be impregnated with melamine-formaldehyde resin and hot-pressed to cure the resin and, if desired, to shape the wood. The organic acid may be acetic or formic acid added at intervals to reduce the pH from an initial value of 6 to 3.5, after which the veneer is removed, washed, dried, and retreated once or oftener until the desired lignin removal is attained. In the gaseous treatment, the wood may be treated in a chamber with a continuous stream of chlorine dioxide, or a given quantity may be admitted and periodically replaced. The chlorine dioxide gas may be diluted with carbon dioxide or may act on the wood in the presence of an amine or pyridine to neutralize hydrochloric acid evolved. Before the gas treatment, the wood may be soaked in acetic acid. The melamine-formaldehyde resin may be applied as a powder to moistened veneers and allowed to diffuse into the wood, or as an aqueous solution applied to the dried veneers by spraying or dipping.
GB8520/52A 1951-04-03 1952-04-03 Process for treating wood Expired GB719245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR719245X 1951-04-03

Publications (1)

Publication Number Publication Date
GB719245A true GB719245A (en) 1954-12-01

Family

ID=9090965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8520/52A Expired GB719245A (en) 1951-04-03 1952-04-03 Process for treating wood

Country Status (1)

Country Link
GB (1) GB719245A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641730A1 (en) * 1989-01-16 1990-07-20 Malfait Bruno Method for bleaching and decoloring dark woods, and more particularly exotic woods
EP1809825A1 (en) * 2004-10-20 2007-07-25 Chun-Won Kang A method for improving wood sound-absorbance and a sound-absorbing wood thereby
CN114905589A (en) * 2022-05-16 2022-08-16 南京林业大学 Preparation method and application of transparent rattan fiber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641730A1 (en) * 1989-01-16 1990-07-20 Malfait Bruno Method for bleaching and decoloring dark woods, and more particularly exotic woods
EP1809825A1 (en) * 2004-10-20 2007-07-25 Chun-Won Kang A method for improving wood sound-absorbance and a sound-absorbing wood thereby
EP1809825A4 (en) * 2004-10-20 2007-11-14 Chun-Won Kang A method for improving wood sound-absorbance and a sound-absorbing wood thereby
CN114905589A (en) * 2022-05-16 2022-08-16 南京林业大学 Preparation method and application of transparent rattan fiber
CN114905589B (en) * 2022-05-16 2023-07-07 南京林业大学 Preparation method and application of transparent rattan fiber

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