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WO2003024681A1 - Agent de preservation du bois a base de tall-oil ou d'acides gras saponifies - Google Patents

Agent de preservation du bois a base de tall-oil ou d'acides gras saponifies Download PDF

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Publication number
WO2003024681A1
WO2003024681A1 PCT/SE2002/001679 SE0201679W WO03024681A1 WO 2003024681 A1 WO2003024681 A1 WO 2003024681A1 SE 0201679 W SE0201679 W SE 0201679W WO 03024681 A1 WO03024681 A1 WO 03024681A1
Authority
WO
WIPO (PCT)
Prior art keywords
tall oil
acids
fatty
wood
oil
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.)
Ceased
Application number
PCT/SE2002/001679
Other languages
English (en)
Inventor
Ingvar Johansson
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.)
LIGNOVA HB
Original Assignee
LIGNOVA HB
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 LIGNOVA HB filed Critical LIGNOVA HB
Publication of WO2003024681A1 publication Critical patent/WO2003024681A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B27K3/36—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
    • 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
    • B27K3/50—Mixtures of different organic 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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/001—Heating

Definitions

  • Wood preserving agent containing saponfied tall oil or fatty acids
  • Present invention refers to a wood preservative based on tall oil or fatty acids.
  • Crude tall oil is extracted in the sulphate (craft) cooking process of as well soft- as hardwoods.
  • - Crude tall oil from softwoods has the approximate composition 50% resin acids, 30% fatty acids and 20% more or less non-saponifiable extractives.
  • Tall oil is industrially distilled (in Sweden by Arizona Chemicals) to resin acids for i.a. coating of paper and fatty acids for i.a. alkyd production.
  • the residue is normally used as a fuel.
  • Tall oil is an interesting alternative wood preservative. It is known to use tall oil to impregnate wood. A so far not solved problem is that the treated wood products are "sweating" oil an are “sticky” for an unacceptably long period of time. Of that reason tall oil is not used as a wood preservative at present.
  • SE-C2-509980 a technique for impregnation of a wood product is described where a solid acid anhydride, a vegetable oil, e.g. tall oil, and an alcohol are used as an impregnating agent.
  • the treated wood product is heat treated at a temperature above 150° C to bind the oil.
  • a solid anhydride and an alcohol to heat treat at high temperature.
  • the technique has not shown good enough results and has therefore not been commercialised (6 years after priority date).
  • WO 92/04166 a wood preservative composition is described containing a mixture of two or more metal soaps of long chain unsaturated fatty acids. Despite the fact that several metals are mentioned as useful, copper is the only metal described in the examples and shown to be effective.
  • the composition must contain oleic acid, linoleic acid and linolenic acid in a certain ratio.
  • the object is to replace such preservatives as pentachlorophenol, copper chromium arsenate (CCA), creosote and tributyl tin oxide (TBTo) and to obtain a better effect than by using metal naphthenates against termites and fungi.
  • the object of the invention is to provide an effective wood preservative that gives a dry and useful surface on the preserved wooden object.
  • the preservative should not require toxic ingredients such as organic solvents, copper or biocides.
  • Another object is to make it possible to use tall oil, tall oil distillates or fatty acids in wood preservatives without problems with stickiness arising.
  • a further object is to achieve impregnation of wood with a preservative based on tall oil, distillates of tall oil or fatty acids without any substantial heating being required.
  • a wood preservative where tall oil, fatty acids or a mixture of fatty and resin acids are used for impregnation of wood, a part of the fatty and resin acids being saponified to calcium or aluminium salts.
  • the metal content is suitably 1-10 weight % of the amount of oil including acids.
  • Ca is suitable to use for saponification (of environmental reasons).
  • the preservative thus contains preferably only oil and saponified acids.
  • the wood preservative according to the invention is based on crude tall oil, a mixture of crude tall oil and an addition of fatty and/or resin acids, or solely resin acids and/or fatty acids.
  • the fatty acids can originate from tall oil or from other sources.
  • the saponification of a part of the fatty and resin acids to Ca-soaps is preferably brought about by first reacting the tall oil with lime (Ca-hydroxide). It is also possible to add a soap to the tall oil or the fatty acid/resin acid-mixture, for instance a Ca-soap of a suitable acid with a pK a of about the same magnitude as that of the fatty and resin acids.
  • Ca-soaps of e.g. fatty acids in high concentration can be added to the tall oil or the fatty acid/resin acid mixture.
  • the amount of Ca-hydroxide can vary between 1 and 10 %, calculated as Ca-metal on the amount of oil.
  • an aluminate can be used, for example.
  • the metal amount is 1-10 % calculated on the oil.
  • the total content of Ca and Al is 1- 10 weight %.
  • the Ca- and Al-soaps thicken the tall oil and possibly also work as siccatives/catalysts for oxidative cross-linking of the fatty acids in the oil.
  • Turpentine or other natural or synthetic compounds which improve the preservative effect, can be added, but preferably the preservative only consists of oil and saponified acids. Suitably the preservative does not contain any solvent.
  • the technique can also be applied to prevent the "spring back" of compressed wood when it is exposed to wetting.
  • planks of pine composed of both sap- and heartwood were impregnated with the Ca-tall oil mixture.
  • planks of pine composed of both sap- and heartwood were impregnated with a Ca-tall oil mixture containing 6 % Ca-hydroxide.
  • the oil had been improved by addition of a further 10 % of resin acids.
  • the planks were first evacuated for a l A hour in an autoclave at a reduced pressure of about 0.05 atm. whereupon the Ca-tall oil mixture at 70° C was sucked into the autoclave to completely fill the cylinder. Thereafter the pressure was allowed to rise to 10 atm. with the planks still submerged in the mixture. The temperature was kept at 70°.
  • planks were maintained submerged for 2 hours whereupon remaining tall oil mixture was drawn from the autoclave.
  • the planks were taken out from the cylinder and allowed to drain in a chamber at 70° over night. Then the surfaces were dry.
  • planks of pine composed of both sap- and heartwood were impregnated with the Ca-fatty acid mixture in the same way as in example 1 above.
  • the planks were taken out from the cylinder and allowed to drain in a chamber at 70° over night. Then the surfaces were dry.
  • the oil take-up in the sapwood was about 200 kg/m 3 . Despite exposure to strong sunshine and an air temperature of more than 30° C the planks remained non-sticky.
  • Example 4 A mixture of 75 % fatty acids from tall oil (SYLFAT ® 2S) and 25 % resin acids (SYLVAROS ® 85, Arizona Chem.) was heated to 120° C. 7 % Ca-hydroxide dispersed in water was added by instalments under vigorous stirring. When all water had evaporated the temperature was kept at 120° for about another l A hour. Thereafter the mixture was ready for use.
  • planks of pine composed of both sap- and heartwood were impregnated with the mixture in the same way as in example 3 above. 10 % of sulphate turpentine was added to the oil to strengthen the mould resistance. The planks were taken out from the cylinder and allowed to drain in a chamber at 70° over night. Then the surfaces were dry. The oil take-up in the sapwood was about 150 kg/m . Despite exposure to strong sunshine and an air temperature of more than 30° C the planks remained non-sticky.
  • Example 5 Fatty acids from tall oil (SYLFAT ® 2S, Arizona Chem.) were heated to 120° C. 5 % Na-aluminate (NaAlO 2 ) dissolved in water was added by instalments under vigorous stirring. When all water had evaporated the temperature was kept at 120° for about another l A hour. Thereafter the mixture was ready for use.
  • NaAlO 2 Na-aluminate
  • planks of pine composed of both sap- and heartwood were impregnated with the Al-fatty acid mixture in the same way as in example 1 above.
  • the planks were taken out from the cylinder and allowed to drain in a chamber at 70° over night. Then the surfaces were dry.
  • the oil take-up in the sapwood was about 180 kg/m .
  • the planks remained non-sticky during a summer of outdoor exposure with periods of air temperature of up to 30° C.

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)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne un agent de préservation du bois à base de tall-oil, d'acides gras ou de mélanges d'acides gras et/ou résiniques, saponifiés avec du calcium et/ou de l'aluminium. L'invention concerne également l'utilisation, comme agent de préservation du bois, de tall-oil brut ou d'acides gras et/ou résiniques, partiellement saponifiés avec du calcium et/ou de l'aluminium. L'invention concerne enfin un procédé d'imprégnation de produit du bois avec un agent de préservation, selon les modalités décrites.
PCT/SE2002/001679 2001-09-14 2002-09-16 Agent de preservation du bois a base de tall-oil ou d'acides gras saponifies Ceased WO2003024681A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0103075A SE520123C2 (sv) 2001-09-14 2001-09-14 Träskyddsmedel innehållande förtvålade fett- eller hartssyror
SE0103075-8 2001-09-14

Publications (1)

Publication Number Publication Date
WO2003024681A1 true WO2003024681A1 (fr) 2003-03-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/001679 Ceased WO2003024681A1 (fr) 2001-09-14 2002-09-16 Agent de preservation du bois a base de tall-oil ou d'acides gras saponifies

Country Status (2)

Country Link
SE (1) SE520123C2 (fr)
WO (1) WO2003024681A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004022291A1 (fr) * 2002-09-09 2004-03-18 Upm-Kymmene Corporation Substance de protection pour le bois et procede de fabrication
WO2008017730A1 (fr) * 2006-08-09 2008-02-14 Höljäkkä Oy Conservateur pour le bois et procédé pour le fabriquer
WO2009101362A1 (fr) * 2008-02-14 2009-08-20 Valagro Carbone Renouvelable Procede de traitement du bois par des agents d'origine naturelle
US20150164966A1 (en) * 2012-05-14 2015-06-18 Hankkija Oy Saponified tall oil fatty acid for use in treatment and animal feed supplements and compositions
US9789143B2 (en) 2013-05-14 2017-10-17 Hankkija Oy Use of tall oil fatty acid
US9962353B2 (en) 2013-10-24 2018-05-08 Hankkija Oy Use of tall oil fatty acid in binding toxins
US10799544B2 (en) 2013-11-13 2020-10-13 Hankkija Oy Feed supplement and a feed composition comprising resin acid based composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU589120A1 (ru) * 1975-06-16 1978-01-25 Белорусский технологический институт им.С.М.Кирова Состав дл пропитки твердых древесно-волокнистых плит
WO1992004166A1 (fr) * 1990-09-03 1992-03-19 Shell South Africa (Proprietary) Limited Conservateurs pour le bois

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU589120A1 (ru) * 1975-06-16 1978-01-25 Белорусский технологический институт им.С.М.Кирова Состав дл пропитки твердых древесно-волокнистых плит
WO1992004166A1 (fr) * 1990-09-03 1992-03-19 Shell South Africa (Proprietary) Limited Conservateurs pour le bois

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 197848, Derwent World Patents Index; Class A81, AN 1978-87455A, XP002962821 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004022291A1 (fr) * 2002-09-09 2004-03-18 Upm-Kymmene Corporation Substance de protection pour le bois et procede de fabrication
WO2008017730A1 (fr) * 2006-08-09 2008-02-14 Höljäkkä Oy Conservateur pour le bois et procédé pour le fabriquer
RU2422265C2 (ru) * 2006-08-09 2011-06-27 Хёльяккя Ой Консервант для древесины и способ изготовления консерванта для древесины
US8088205B2 (en) 2006-08-09 2012-01-03 Holjakka Oy Wood preservative and method for manufacturing wood preservative
WO2009101362A1 (fr) * 2008-02-14 2009-08-20 Valagro Carbone Renouvelable Procede de traitement du bois par des agents d'origine naturelle
FR2927564A1 (fr) * 2008-02-14 2009-08-21 Ct Valorisation Ind Agro Resso Procede de traitement du bois par des agents d'origine naturelle
US9789077B2 (en) 2012-05-14 2017-10-17 Hankkija Oy Use of saponified tall oil fatty acid
US20150164966A1 (en) * 2012-05-14 2015-06-18 Hankkija Oy Saponified tall oil fatty acid for use in treatment and animal feed supplements and compositions
US9907771B2 (en) 2012-05-14 2018-03-06 Hankkija Oy Saponified tall oil fatty acid for use in treatment and animal feed supplements and compositions
US9789143B2 (en) 2013-05-14 2017-10-17 Hankkija Oy Use of tall oil fatty acid
US9919013B2 (en) 2013-05-14 2018-03-20 Hankkija Oy Use of tall oil fatty acid
US10092610B2 (en) 2013-05-14 2018-10-09 Hankkija Oy Tall oil fatty acid for use in treatment and animal feed supplements and compositions
US9962353B2 (en) 2013-10-24 2018-05-08 Hankkija Oy Use of tall oil fatty acid in binding toxins
US10799544B2 (en) 2013-11-13 2020-10-13 Hankkija Oy Feed supplement and a feed composition comprising resin acid based composition
US10849947B2 (en) 2013-11-13 2020-12-01 Hankkija Oy Feed supplement and a feed composition comprising resin acid based composition
US11253562B2 (en) 2013-11-13 2022-02-22 Forchem Oy Feed supplement
US12419925B2 (en) 2013-11-13 2025-09-23 Ab Vista Finland Oy Feed supplement

Also Published As

Publication number Publication date
SE0103075L (sv) 2003-03-15
SE520123C2 (sv) 2003-05-27
SE0103075D0 (sv) 2001-09-14

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