EP0465434A1 - Huile rectifiée, fractionnée et distillée de goudron de houille pour l'imprégnation écologique du bois - Google Patents

Huile rectifiée, fractionnée et distillée de goudron de houille pour l'imprégnation écologique du bois Download PDF

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Publication number
EP0465434A1
EP0465434A1 EP91830209A EP91830209A EP0465434A1 EP 0465434 A1 EP0465434 A1 EP 0465434A1 EP 91830209 A EP91830209 A EP 91830209A EP 91830209 A EP91830209 A EP 91830209A EP 0465434 A1 EP0465434 A1 EP 0465434A1
Authority
EP
European Patent Office
Prior art keywords
oil
wood
distilled
fractional
coal tar
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.)
Granted
Application number
EP91830209A
Other languages
German (de)
English (en)
Other versions
EP0465434B1 (fr
Inventor
Giuseppe Margaritelli
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.)
Margaritelli SpA
Original Assignee
Margaritelli SpA
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 Margaritelli SpA filed Critical Margaritelli SpA
Publication of EP0465434A1 publication Critical patent/EP0465434A1/fr
Application granted granted Critical
Publication of EP0465434B1 publication Critical patent/EP0465434B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B27K3/44—Tar; Mineral oil
    • B27K3/46—Coal tar
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C1/00—Working-up tar
    • C10C1/04—Working-up tar by distillation
    • C10C1/08—Winning of aromatic fractions

Definitions

  • the object of the present patent application for industrial use is a distilled, fractional and rectified coal tar oil to be used for ecologically impregnating wood.
  • the antiseptic treatment which is at present used on wood to avoid deterioration is based on mineral salts (arsenic, chrome, copper and boron dissolved in water) or on creosote (distilled coal tar oil from pit-coal).
  • the type of treatment most used is the one with a creosote base; the type of treatment often used for electric current, telegraph and telephone poles, railway sleepers and superstructures,mooring and warning dolphins, spiles, planks and beams which are to be used in contact with the ground or immersed in fresh or salt water.
  • creosote Treatment with creosote has proved to be particularly effective even with wood to be used in agriculture or in constructing gang planks,avalanche protections, river embankments and in all those situations where the long life of the wood being used must be guaranteed.
  • creosote produces vapours which give off an intense and annoying odour which is often associated with a bad impression of the environment and for man.
  • the new coal tar oil is obtained from the column rectification of naphthalene oil, which is injected under continuous feed into a rectification plant made up of three columns in series where it undergoes further fractioning in a more decisive way using different cuts having relatively brief distillation intervals.
  • the oil in question begins to distill at about 230xC; at 330xC at least 97% of the oil itself has been distilled.
  • the oil obtained in this way has a Benzo ( ⁇ ) Pyrene content which is less than the detectable limit of the instrument for the same set at 2 ppm; however in the industrial production process of the oil in question it might be difficult to maintain the concentration of Benzo ( ⁇ ) Pyrene within the above limit therefore it would be more realistic to consider the limit of oscillation of this value up to a maximum of 20 ppm.
  • Benzo ( ⁇ ) Pyrene content is considered as the reference value for evaluating the amount of cancerogenous aromatic polycyclic hydrocarbons in pyrolisis products of organic matter; in other words, when the value of Benzo ( ⁇ ) Pyrene is at a negligable level we can be certain that also the other aromatic polycyclic hydrocarbons, those bearing a risk of cancer, are either absent or are present in insignificant quantities.
  • the oil according to the invention has also numerous other practical advantages over conventional creosote:above all it enables the impregnation temperature of wood to be lowered quite noticeably from 90xC (at present necessary when using creosote) to 35xC.
  • the new product in question being much more fluid than the old one, guarantees greater penetration capacity not only in correspondence with the alburnam part of wood but also with the heart wood; thanks to its high fluidity the oil in question can be used to great advantage also in the case where it is necessary to practice a second impregnation on material already treated with other antiseptic solutions , in particular mineral salts.
  • the new oil also means that the treated wood will come out of the autoclave completely dry, thanks to the greater ease with which the depression created inside the autoclave succeeds in causing the extraction of the oil itself from the wood fibre.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Alcoholic Beverages (AREA)
  • Fats And Perfumes (AREA)
EP91830209A 1990-06-26 1991-05-20 Huile rectifiée, fractionnée et distillée de goudron de houille pour l'imprégnation écologique du bois Expired - Lifetime EP0465434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT01794690A IT1243219B (it) 1990-06-26 1990-06-26 Olio di catrame distillato, frazionato e rettificato da utilizzare perl'impregnazione ecologica del legno.
IT1794690 1990-06-26

Publications (2)

Publication Number Publication Date
EP0465434A1 true EP0465434A1 (fr) 1992-01-08
EP0465434B1 EP0465434B1 (fr) 1995-09-20

Family

ID=11151520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91830209A Expired - Lifetime EP0465434B1 (fr) 1990-06-26 1991-05-20 Huile rectifiée, fractionnée et distillée de goudron de houille pour l'imprégnation écologique du bois

Country Status (4)

Country Link
EP (1) EP0465434B1 (fr)
AT (1) ATE128061T1 (fr)
DE (1) DE69113144T2 (fr)
IT (1) IT1243219B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525302A1 (fr) * 1991-07-03 1993-02-03 Rütgerswerke Aktiengesellschaft Huile d'imprégnation aromatique sans odeur à évaporation réduite
DE19528095A1 (de) * 1995-08-01 1997-02-06 Total Deutschland Gmbh Zubereitung auf der Basis eines speziellen Steinkohlenteeröls und einer Mineralölfraktion sowie deren Verwendung
WO1998040447A1 (fr) * 1997-03-11 1998-09-17 Pierre Fabre Dermo-Cosmetique Extrait de goudron de houille a teneur reduite en hydrocarbures aromatiques, procede d'obtention et compositions dermo-cosmetiques

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670992A (en) * 1986-03-31 1987-06-09 Kerr-Mcgee Chemical Corporation Process for treating wood products
DE3811199A1 (de) * 1988-04-01 1989-10-19 Mueller Bauchemie Holzschutzmittel
EP0359935A2 (fr) * 1988-09-19 1990-03-28 Verkaufsgesellschaft für Teererzeugnisse (VfT) mbH Huile d'imprégnation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670992A (en) * 1986-03-31 1987-06-09 Kerr-Mcgee Chemical Corporation Process for treating wood products
DE3811199A1 (de) * 1988-04-01 1989-10-19 Mueller Bauchemie Holzschutzmittel
EP0359935A2 (fr) * 1988-09-19 1990-03-28 Verkaufsgesellschaft für Teererzeugnisse (VfT) mbH Huile d'imprégnation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 218 (C-245)[1655], 4th October 1984; & JP-A-59 101 401 (OSAKA GAS K.K.) 12-06-1984 *
SOVIET INVENTIONS ILLUSTRATED, section Ch: Chemical, week E43, 8th December 1982, page 2, accession no. 92223 E/43, Derwent Publications Ltd, London, GB; & SU-A-891 747 (UKR COAL CHEM. INST.) 23-12-1981 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525302A1 (fr) * 1991-07-03 1993-02-03 Rütgerswerke Aktiengesellschaft Huile d'imprégnation aromatique sans odeur à évaporation réduite
DE19528095A1 (de) * 1995-08-01 1997-02-06 Total Deutschland Gmbh Zubereitung auf der Basis eines speziellen Steinkohlenteeröls und einer Mineralölfraktion sowie deren Verwendung
WO1998040447A1 (fr) * 1997-03-11 1998-09-17 Pierre Fabre Dermo-Cosmetique Extrait de goudron de houille a teneur reduite en hydrocarbures aromatiques, procede d'obtention et compositions dermo-cosmetiques
FR2760637A1 (fr) * 1997-03-11 1998-09-18 Fabre Pierre Dermo Cosmetique Extrait de goudron de houille a teneur reduite en hydrocarbures aromatiques, procede d'obtention et preparations dermo-cosmetiques
US6319392B1 (en) 1997-03-11 2001-11-20 Pierre Fabre Dermo-Cosmetique Coal tar extract with reduced aromatic hydrocarbon content, method for obtaining same and dermatological and cosmetic compositions

Also Published As

Publication number Publication date
IT1243219B (it) 1994-05-24
IT9017946A0 (it) 1990-06-26
EP0465434B1 (fr) 1995-09-20
DE69113144T2 (de) 1996-05-09
IT9017946A1 (it) 1991-12-26
ATE128061T1 (de) 1995-10-15
DE69113144D1 (de) 1995-10-26

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