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WO2001001776A1 - Composition de protection - Google Patents

Composition de protection Download PDF

Info

Publication number
WO2001001776A1
WO2001001776A1 PCT/AU2000/000807 AU0000807W WO0101776A1 WO 2001001776 A1 WO2001001776 A1 WO 2001001776A1 AU 0000807 W AU0000807 W AU 0000807W WO 0101776 A1 WO0101776 A1 WO 0101776A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
agent
cellulosic material
component
group
Prior art date
Application number
PCT/AU2000/000807
Other languages
English (en)
Inventor
Russell John Cavanagh
Original Assignee
Quantum Extracts Pty Ltd
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 Quantum Extracts Pty Ltd filed Critical Quantum Extracts Pty Ltd
Priority to AU55148/00A priority Critical patent/AU5514800A/en
Publication of WO2001001776A1 publication Critical patent/WO2001001776A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/06—Coniferophyta [gymnosperms], e.g. cypress
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08—Magnoliopsida [dicotyledons]
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08—Magnoliopsida [dicotyledons]
    • A01N65/36—Rutaceae [Rue family], e.g. lime, orange, lemon, corktree or pricklyash
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/40—Liliopsida [monocotyledons]
    • A01N65/44—Poaceae or Gramineae [Grass family], e.g. bamboo, lemon grass or citronella grass

Definitions

  • the present invention relates to a composition and method for preserving cellulosic materials such as timber and in particular is directed towards protecting timber against attack by termites and/or decay.
  • CCA acidic copper chromium arsenic solution
  • a method for treating a cellulosic material which includes applying an effective amount of an organic preservative agent in a liquid carrier to the surface of the cellulosic material in association with a component which can inhibit loss of the agent from the cellulosic material.
  • the preservative agent as used in present invention can include one or more agents which can protect a cellulosic material from attack by insects such as termites, and from attack by microorganisms such as fungi which cause decay.
  • the preservative agent is typically a naturally occurring agent.
  • extracts from plants typically such agents are found in extracts from plants.
  • the extracts may be obtained by any suitable method including solvent extraction and hydrodistillation. It will be appreciated that the extraction method is not critical and may be selected depending upon the plant or part thereof to be extracted and the type of preservative agent, for example whether it is acidic or neutral.
  • Suitable plants include Callitris columellaris, Callitris intraropica,
  • Cypress Bitter orange leaves, Lemongrass, Calytrix virgata, c. tetragona leaves, Chamaecyparis obtusa and thujopsis dolobrata.
  • the white cypress pine is an Australian native and its timber has been known for many years to be resistant to attack by termites. It has also been observed that the termite resistance of cypress pine timber decreases over time. This is believed to be due to the loss of volatile active agents. Although preliminary studies as to the termiticidal properties of white cypress pine extracts have been conducted and published since at least the 1970's, the use of cypress pine extracts as a termiticidal agent has yet to be adopted. This has been attributed to extreme mobility of the active agents within the timber and loss by volatilization and/or leaching.
  • an especially preferred active agent is citronellic acid or a derivative thereof.
  • plant derived extracts typically contain a mixture of at least two active agents.
  • Naturally occurring agents which exhibit termiticide or fungicidal properties are normally present in plant extracts together with a complex mixture of terpenes. It is preferred that the agent(s) is used in the form of the complex mixture which is extracted from the plant.
  • the present inventor has surprisingly and unexpectedly discovered that when used in combination with other terpenes and in particular, the sesquiterpenes that the active agent can have an improved stability as compared to use in a more purified form.
  • the concentration of active agents and associated compounds can vary depending upon the plant source, the part of the plant used to extract the agents, the time of year the compounds were extracted, extraction methods and the like. Thus, the amount of plant extract required to provide an effective amount of active agents may vary.
  • the composition may include from about 1 to about 10, preferably about 5wt% of the plant extract. This will generally provide between about 0.05 to about 0.5wt%, typically about 0.25wt% of an active ingredient such as citronellic acid.
  • the preservative is applied together with a liquid carrier.
  • the liquid carrier carries the preservative agent into the timber.
  • the carrier can then removed, typically by evaporation.
  • the evaporation can occur under ambient conditions or if desired may be accelerated by heat and/or vacuum.
  • the carrier may be an organic solvent in which the active agent and substantially non-volatile material are soluble.
  • organic solvent such as straight or branch claim alkenes ad alkanes; aromatic compounds such as benzene, toluene, xylene, ethers, alcohols, aldehydes, ketones, amides, amines, carboxylic acid chlorides, nitriles, nitros, sulfides, sulfoxides, sulfones and the like.
  • Especially preferred solvents include xylene, alpha pinene, acetylene, acetone, toluene, cineol, diethyl ether, acetonitrile and mixtures thereof.
  • Other preferred solvents include the aliphatic hydrocarbon solvents sold under the trade names Isopar C,H,G (manufactured by Esso Chemical Co) or Shellsol (manufactured by Shell Oil Co), linear (or normal) paraffins such as the norpar series available from Exxon Chemical Company such as Norpan 12, 13, 14, 15 and the neosolve series of paraffins available from Shell.
  • suitable solvents are those available from Exxon under the trade name Exxsol.
  • the liquid carrier may be a solvent for the active agent, although this is not necessary.
  • the carrier may include water or other carriers.
  • a non-solvent when used the composition will be in the form of an emulsion.
  • one or more surfactants, dispersing agents or wetting agents are added to form an emulsion.
  • Any suitable agent may be used such as sodium lauryl sulfate, coconut diethyl amide and those available under the trade names KB4, KB70 and KB3.
  • the preservative agent and liquid carrier is applied in association with a component which can inhibit loss of the preservative agent from the cellulosic material.
  • the component may be applied together with or separately to the preservative agent.
  • the preservative agent and carrier may be applied in a first step and the component applied in a second step.
  • the component may be a known sealer for the surface of timber such as a paint or sealer which forms a film either over the surface of the cellulosic material, thereby preventing loss of the preservative agent from the surface.
  • the component may also form part of the composition and be applied with the carrier and is carried into the timber fibres with the preservative agent.
  • a preservative composition for a cellulosic material comprising an effective amount of an organic preservative agent, a liquid carrier and a component which can inhibit loss of the agent from the cellulosic material.
  • the component is of a type which is not lost from the timber with the carrier.
  • the component may be a non-volatile material such as a high molecular weight, oligomeric or polymeric material.
  • the component can have a functional group which can react with and bind to the surface of the timber fibres.
  • a particularly preferred component is an alkyd resin.
  • Suitable alkyd resins are those available commercially under the trade names Synolac, Gelkyd, Super Gelkyd (manufactured by Cray Valley) and Rhodene. Whilst not wishing to be bound by theory, it is believed that in this case, the component is able to fix the active agent to the timber. In this way, the active agent, which is typically a volatile material can remain in the timber after evaporation of the carrier.
  • Suitable components for use in the composition of the invention include compounds which are used as water resistant sealing agents for use with porous materials such as concrete and timber.
  • Such sealers include polymeric materials such as siloxanes, acrylic, alkyd, epoxy resins and prepolymers.
  • the amount of sealer used in the inventive composition can vary depending upon the type of sealer and the intended use of the timber to be treated.
  • composition of the present invention may be applied in any suitable manner including painting, spraying, vacuum and under pressure.
  • a method of preserving a cellulosic material including applying an effective amount of the composition of the further broad form to the cellulosic material.
  • Preservative compositions were prepared by mixing together a calculated amount of cypress extract to provide 0.25% citronellic acid, 5wt% of a sealer and made to 100% with a liquid carrier according to the following table.
  • +Duramol is a trade name of a methyl methacrylate based sealant available from Albright & Wilson.
  • +lsopar is an isoparaffinic aliphatic hydrocarbon manufactured by Esso Chemical Co.
  • compositions were formulated as follows:
  • composition of the invention was prepared as follows:
  • a blank was prepared that contained all raw material in the same proportion with the exclusion of the white cypress oil.
  • the stability oven was set at 54°C and the temperature logged over the trial period using a data logger.
  • the logged report recorded a temperature of l o 56.5°C ⁇ 1 °C over the test period
  • Neat white cypress oil was placed in brown glass screw top vials and placed in the 54°C oven for two weeks. The stability of the oil was assessed by GCMS analysis and compared to the same oil held at 25°C over the same period.
  • Formulated product, as active and blank were placed in 500mL epon- lined containers and the headspace swept with nitrogen gas prior to sealing the cans with the press-fit lids.
  • One can each of active and blank were placed in temperature controlled ovens at 54°C and 40°C. A retain of each of the active and blank was held at room temperature in brown glass away from direct sunlight.
  • White Cypress Oil stored at 25°C was determined by GCMS to have a guaiol level of 30% (w/w). The same oil stored at 54°C for two weeks had a guaiol content of 27.3% (w/w). This represents a 9% loss which given the harshness of the test conditions and the nature of volatile essential oils is a reasonable result. It does indicate that the active component in the formulation is moderately unstable at elevated temperatures.
  • Table 1 confirm that there is no significant change in the acid value of the composition of the invention when stored at 54°C for two weeks. There may be a slight increase, 2.28 to 2.37 or 4%. However proper packaging with little headspace has ensured that product integrity is maintained and acid value changes were minimal.
  • the titration values for the blank at 25°C and 54°C confirm a small, but consistent contribution to the acid value. It further confirms that this simple method is sensitive to the acid incorporated into the formulation, in the form of white cypress oil, at concentrations down to 1 %.
  • GCMS analysis of the formulated product proved problematic as the excipients (in particular the alkyd resin) in the formulated product bind to the actives guaiol and cintronellic acid.
  • Citronellic acid could not be satisfactorily resolved in the formulated product by GCMS even with selected ion monitoring.
  • a broad peak appeared where citronellic acid should elute, however residual citronellic acid could be detected in the baseline of the GCMS profile over the remaining time of the analysis. This suggests that citronellic acid is being retained by the sample matrix in the inlet liner and slowly desorbing (at 250°C, the inlet temperature) during the chromatographic run.
  • compositions as prepared above were applied to a timber article by brushing or spraying. It was observed that timber treated by the present invention was resistant to attack by termites and microorganisms such as rot fungus, which facilitate decay.
  • the composition of the present invention can provide a less toxic alternative to the currently used toxic CCA preservatives.
  • the use of the component can effectively "lock in” the volatile active agents. This can minimize loss of active agent or storage and loss of active agent after application to the timber. In this way, the active agents are not lost to any significant amount with the solvent during solvent evaporation. It can be seen that prevention of the loss of the active agent reduces the need for repeat applications and also allows the amount of active agent in the composition to be minimized without loss of efficacy. Further, the sealant can effectively fix the active agent(s) in place within the timber such that loss of active agent by evaporation or leaching can be reduced.
  • compositions with water repellant sealers are especially suitable for use on external timbers, timber articles such as posts which have a portion extending beneath the ground surface or timber articles used in marine environments.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Mycology (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Agronomy & Crop Science (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Botany (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne une composition de protection d'une matière cellulosique, qui comprend un extrait de Callitris columellaris, un support liquide, et une résine polymérique.
PCT/AU2000/000807 1999-07-05 2000-07-05 Composition de protection WO2001001776A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55148/00A AU5514800A (en) 1999-07-05 2000-07-05 A preservative composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ1418 1999-07-05
AUPQ1418A AUPQ141899A0 (en) 1999-07-05 1999-07-05 A method of and composition for preserving cellulosic material

Publications (1)

Publication Number Publication Date
WO2001001776A1 true WO2001001776A1 (fr) 2001-01-11

Family

ID=3815607

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000807 WO2001001776A1 (fr) 1999-07-05 2000-07-05 Composition de protection

Country Status (2)

Country Link
AU (1) AUPQ141899A0 (fr)
WO (1) WO2001001776A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003013806A1 (fr) * 2001-08-10 2003-02-20 Dow Global Technologies Inc. Composition de traitement du bois et procede d'utilisation
WO2005077175A1 (fr) * 2004-02-11 2005-08-25 Bretts Pty Limited Regulation de pesticide
WO2006008566A1 (fr) * 2004-06-22 2006-01-26 Mandapro Ag Revetement protecteur
WO2011138570A1 (fr) 2010-05-07 2011-11-10 Centre National De La Recherche Scientifique Extraits de bois durables amazoniens, leur procédé d'obtention, et leur utilisation comme agent biocide
CN102825638A (zh) * 2012-08-29 2012-12-19 中南林业科技大学 一种竹材防霉防虫的处理方法
CN106393357A (zh) * 2016-09-29 2017-02-15 阜南县星光工艺品有限公司 一种植物提取物防腐剂
DE102021128310A1 (de) 2021-10-29 2023-05-04 Riepe Chemie GmbH & Co. KG Hydrophobe Flüssigkeit und deren Verwendung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1564188A (en) * 1977-03-17 1980-04-02 Desowag Bayer Holzschutz Gmbh Preservative for wood and wood-based materials
SU835749A1 (ru) * 1979-07-16 1981-06-07 Хабаровский Институт Инженеровжелезнодорожного Транспорта Состав дл пропитки дерев нных шпал
US4632881A (en) * 1984-10-12 1986-12-30 Olin Corporation Pyrithione-containing bioactive polymers and their use in paint and wood perservative products
JPH02286203A (ja) * 1989-04-27 1990-11-26 Earth Chem Corp Ltd 木材害虫防除剤組成物
JPH04139104A (ja) * 1990-09-29 1992-05-13 Arakawa Chem Ind Co Ltd 殺虫剤
JPH04310701A (ja) * 1991-04-09 1992-11-02 Sanyo Kokusaku Pulp Co Ltd 天然精油を含有する木質強化内装材
JPH05278007A (ja) * 1992-04-03 1993-10-26 Daiken Trade & Ind Co Ltd 合成樹脂含浸処理木質化粧板
FR2727830A1 (fr) * 1994-12-09 1996-06-14 Xylochimie Composition pesticide, notamment pour le traitement de materiaux de construction
DE19715664A1 (de) * 1997-04-16 1998-10-22 Butzbacher Weichenbau Gmbh Verfahren zum Imprägnieren von Festkörpern

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1564188A (en) * 1977-03-17 1980-04-02 Desowag Bayer Holzschutz Gmbh Preservative for wood and wood-based materials
SU835749A1 (ru) * 1979-07-16 1981-06-07 Хабаровский Институт Инженеровжелезнодорожного Транспорта Состав дл пропитки дерев нных шпал
US4632881A (en) * 1984-10-12 1986-12-30 Olin Corporation Pyrithione-containing bioactive polymers and their use in paint and wood perservative products
JPH02286203A (ja) * 1989-04-27 1990-11-26 Earth Chem Corp Ltd 木材害虫防除剤組成物
JPH04139104A (ja) * 1990-09-29 1992-05-13 Arakawa Chem Ind Co Ltd 殺虫剤
JPH04310701A (ja) * 1991-04-09 1992-11-02 Sanyo Kokusaku Pulp Co Ltd 天然精油を含有する木質強化内装材
JPH05278007A (ja) * 1992-04-03 1993-10-26 Daiken Trade & Ind Co Ltd 合成樹脂含浸処理木質化粧板
FR2727830A1 (fr) * 1994-12-09 1996-06-14 Xylochimie Composition pesticide, notamment pour le traitement de materiaux de construction
DE19715664A1 (de) * 1997-04-16 1998-10-22 Butzbacher Weichenbau Gmbh Verfahren zum Imprägnieren von Festkörpern

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class A82, AN 1982-32508E/16 *
DATABASE WPI Derwent World Patents Index; Class A96, AN 1992-211969/26 *
DATABASE WPI Derwent World Patents Index; Class P63, AN 1987-185445/26 *
DATABASE WPI Derwent World Patents Index; Class P63, AN 1991-012261 *
DATABASE WPI Derwent World Patents Index; Class P63, AN 1992-412482/50 *
DATABASE WPI Derwent World Patents Index; Class P63, AN 1993-374044/47 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003013806A1 (fr) * 2001-08-10 2003-02-20 Dow Global Technologies Inc. Composition de traitement du bois et procede d'utilisation
US6953501B2 (en) 2001-08-10 2005-10-11 Inventions & Discoveries, Llc Wood treatment composition and method of use
WO2005077175A1 (fr) * 2004-02-11 2005-08-25 Bretts Pty Limited Regulation de pesticide
WO2006008566A1 (fr) * 2004-06-22 2006-01-26 Mandapro Ag Revetement protecteur
WO2011138570A1 (fr) 2010-05-07 2011-11-10 Centre National De La Recherche Scientifique Extraits de bois durables amazoniens, leur procédé d'obtention, et leur utilisation comme agent biocide
CN102825638A (zh) * 2012-08-29 2012-12-19 中南林业科技大学 一种竹材防霉防虫的处理方法
CN106393357A (zh) * 2016-09-29 2017-02-15 阜南县星光工艺品有限公司 一种植物提取物防腐剂
DE102021128310A1 (de) 2021-10-29 2023-05-04 Riepe Chemie GmbH & Co. KG Hydrophobe Flüssigkeit und deren Verwendung

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