Your search resulted in 51 documents. Displaying 25 entries per page.
IPBC - A new fungicide for wood protection
1984 - IRG/WP 3295
3-iodo-2-propynyl butyl carbamate (IPBC) is presented as a potential low toxic alternative to pentachlorophenol and the sodium chlorophenoxides. Data on its effect against basidiomycetes is shown. Tests according to both the European standard method, EN-113, and American, ASTM D-413, have shown its potential. The chemical gives protection against both the wood destroying fungi, blue stain, mould and algae. It is possible to have it formulated in both water-based and organic solvent-based products. Treatment of wood out of ground contact (vac-vac products, pretreatment products, primers, stains, etc.) and sapstain control are some of the most potential end use areas within wood protection. Besides wood protection, the IPBC is used as a fungicide in paint, adhesives, caulks and sealants, cement, leather, paper, cutting oil, ink and in different roofing materials.
J Hansen
Practical experiments with Boracol 10 Rh used as a fungicide in the repair process after attack by the dry rot fungus (Serpula lacrymans)
1987 - IRG/WP 3458
The test is carried out in an old house in Nyhavn, Copenhagen. The roof and the walls close to were heavily attacked by dry rot fungus (Serpula lacrymans) because damage to the zinc covering the frontspice were letting in water to the wood and wall construction. An attack by the dry rot fungus is more complicated to repair compared with other wood destroying fungi because beside the damage on wood...
J Bech-Andersen
Effect of species, retention and conditioning temperature on copper stabilization and leaching for ACQ-D
2004 - IRG/WP 04-30342
The time to stabilization or equalization of the copper component of ACQ-D was highly dependent on treating solution concentration (preservative retention) and post treatment temperature. Stabilization was rapid for low preservative retentions but extended times were needed for wood treated with higher concentration solutions. The extent of stabilization was also concentration dependent with a h...
Y T Ung, P A Cooper
Suitability of propiconazole (R 49362) as a new-generation fungicide
1989 - IRG/WP 3529
Propiconazole (R 49362), an anti-fungal triazole-compound of Janssen Pharmaceutica, has been extensively tested to determine its potential use as a wood preserving fungicide. Various tests in both private laboratories and official institutes indicate a good activity against Basidiomycetes (brown and white rot) and Ascomycetes (blue stain-in-service). The active ingredient seems very resistant to w...
A R Valcke
Restrictions on the use of chlorosilanes as potential wood preservatives
1985 - IRG/WP 3345
The biological protection of wood by chemical modification with different types of chlorosilanes has been investigated. The impregnation of wood has been carried out by means of liquid phase and vapor phase treatments using pure silane and silane-solvent systems. The biological efficacy against wood rotting fungi, molds and staining fungi was determined in a number of screening trials, subsequentl...
M Stevens
A laboratory evaluation of tributyltin ethanesulphonate as an aqueous fungicide in wood preservation
1983 - IRG/WP 3229
Toxic limit data, using both leached and unleached wood test blocks, are reported for aqueous solutions of tributyltin ethanesulphonate against four Basidiomycete fungi, Poria placenta, Gloeophyllum trabeum, Coriolus versicolor and Coniophora puteana. An in situ study of the tributyltin compound in Scots pine and ponderosa pine sapwood has been carried out, using the technique of 119mSn Mössbauer...
R Hill, P J Smith, J N R Ruddick, K W Sweatman
Evaluation of tropolone as a wood preservative : activity and mode of action
2002 - IRG/WP 02-30282
The fungicidal activity of 2-hydroxy cyclohepta-2,4,6-trienone (tropolone) analogue of b-thujaplicin a natural product responsible for the durability of heart wood of several
cupressaceous trees was investigated in vitro on growth of white and brown rot fungi. Results obtained show that tropolone, easily prepared from commercially available products,
possesses strong fungicidal activity similar ...
P Gérardin, M Baya, N Delbarre, P N Diouf, D Perrin, P Soulounganga, E Gelhaye,
J P Jacquot, C Rapin
The biocidal efficacy of sulphates against basidiomycetes
1999 - IRG/WP 99-30192
Copper sulphate is used for the preservation of wood since decades. However, if copper sulphate is not combined with a compound it can be leached up to 50% and more from the treated wood. Previous results for leached wood indicated that the loss of biological efficacy against soft rot corresponds to leaching of copper. For basidiomycetes, however, the effectiveness decreases much more rapidly. The...
H Leithoff, E Melcher
Impregnation of timber with tannin as a mean of improving its dimensional stability
1992 - IRG/WP 92-3695
The results of a joint project carried out at the Timber Division of LNEC under the 2nd research programme of the CEC DGXII - "Wood as a renewable raw material" entitled "Stabilization of wood by impregnation processes" is presented. Pieces Maritime pine timber was impregnated with tannin under pressure to see if the treatment with tannin improved the behavior of wood regarding its dimensional sta...
J S Machado
An immunoassay for benzyldimethyldodecylammonium chloride, a multipurpose disinfectant and fungicide
1997 - IRG/WP 97-30149
A competitive enzyme-linked immunosorbent assay (ELISA), based on polyclonal antibodies, was developed to measure benzyldimethyldodecylammonium chloride (BDDAC). The anti-BDDAC polyclonal antibodies recognized free BDDAC in an indirect competitive ELISA. The detection limit. based on the 20% inhibition (IC20), was 0.18 µg/ml and the 50% inhibition (IC50) was 1.1 µg/ml. The antibodies recognised ...
J Bull, A N Serreqi, Tao Chen, C Breuil
Bethoguard; A new wood protecting fungicide for use in metal free ground contact wood preservatives
2002 - IRG/WP 02-30301
Research has identified the limitations in both the spectrum of activity and permanence of organic biocides placed in wood in high hazard environments, particularly in the absence of heavy metals such as copper. More specifically, the control of soft rot decay in wood in soil contact has proven to be most problematic.
The new organic biocide, Bethoguard; an oxathiazine, has demonstrated excellen...
S C Forster, G R Williams, M Van Der Flaas, M Bacon, J Gors
Efficacies of an insecticide and a fungicide for preventing blue-stain of Japanese red pine logs
2006 - IRG/WP 06-20329
We examined blue-stain fungi on Japanese red pine at 3 forests and 2 saw mills in Iwate Prefecture, Japan. The isolated ophiostomatoid fungi were Leptographium sp and Ophiostoma sp. There were 3 routes of the blue-stain; fungal growth from the spore or hypha stuck on the cross cut surfaces, fungal spread through the inner bark by bark beetles and fungal invasion around whorled knot. The larger ext...
H Taniuchi, T Koiwa, H Masuya, S Doi
The Development of a novel method to preserve reeds using an environmentally friendly timber preservative and a unique engineering design.
2006 - IRG/WP 06-40335
Reeds are used in the construction of bush lodges in Northern Kwa- Zulu Natal, South Africa. Fungal, insect and ultra-violet damage to these reeds is posing a severe problem. Within a space of two years, the reeds are attacked and have to be subsequently replaced; a time consuming and costly exercise. A novel method has been used to successfully preserve these reeds with an environmentally friendl...
K Govender, K G Moodley
Silver – The Next Generation Wood Preservative
2007 - IRG/WP 07-30419
The successful introduction and commercial use of products designed to have controlled release of silver ion over long time periods prompted the Silver Research Consortium and the US Forest Products Laboratory to undertake research to see if silver could also be an effective wood preservative to be used in place of chromated copper arsenate (CCA) now prohibited for use in the United States and els...
J R Ellis, K Jayachandran, D Nicholas
Growth and succession of mould on commercial paint systems in two field sites
2007 - IRG/WP 07-30421
Discolouring fungi reduce the service life of coated wooden claddings in façades and increase the total cost of ownership due to shorter maintenance intervals. It is of major importance to find paint systems for wood which are durable and have a high resistance to mould growth. A total of 15 paint systems from 9 different manufacturers were exposed on two field sites, Sørkedalen and Birkenes, ...
L Ross Gobakken, K M Jenssen
Wood preservation by a mixed anhydride treatment: Using simple models of polymeric wood compounds
2008 - IRG/WP 08-30457
Treatment of wood by a mixed aceto/oleic (or other fatty acid residue) anhydride promoted as a safe and environment friendly wood preservation system has been examined quantitatively by liquid phase 13C NMR and solid phase MAS-DEC (proton decoupling) 13C NMR through all its different stages to determine which reactions occur with simple model compounds of the polymeric constituents of wood. The p...
F Lyon, M-F Thevenon, A Pizzi, G Tondi, A Despres, J Gril, S Rigolet
Effect of amphiphilic antioxidant alkyl ammonium ascorbate on inhibition of fungal growth: Application to wood preservatives formulation
2008 - IRG/WP 08-30466
Amphiphilic surfactants were synthesized from ascorbic acid and different fatty amines and evaluated for formulation of wood preservation products. Characterization of physicochemical properties of the new compounds indicated classical behavior of cationic surfactants. Antioxidant properties, estimated using methyl linoleate oxidation inhibition method, were similar to that of ascorbic acid teste...
C Gérardin , T Koumbi Mounanga, P Gérardin
Formation and Structure of Metal Azole Complexes
2008 - IRG/WP 08-30469
Divalent copper and zinc complexes with metal:azole ratio 1:2 were readily formed at room temperature with the fungicides tebuconazole and propiconazole. The structure of copper and zinc tebuconazole acetate and zinc cis-propiconazole chloride were examined by X-ray crystallography. In copper tebuconazole acetate, the copper atom lies on a crystallographic inversion centre and is coordinated to tw...
P D Evans, K J Schmalzl, C M Forsyth, G D Fallon, S Schmid, B Bendixen, S Heimdal
Laboratory test of some formulations against stain and mould fungi isolated from bamboo wood
2009 - IRG/WP 09-30508
To screen the effective anti-mould formulations, fungicides such as carbendazim, tebuconazole, fludioxonil, difenoconazole, prochloraz, benomyl and 8-hydroxy-quinoline copper (copper oxine) were selected to conduct the laboratory test of fungicidal activity by method of inhibition zone against Botryodiplodia theobromae Pat., Fusarium sp., Alternaria tenuis Nees., Penicillium purpurogenum Stoll, Tr...
Xingxia Ma, Airui Sun, Mingliang Jiang, Daochun Qin
Preventing decay in termite monitoring stations
2010 - IRG/WP 10-30546
In-ground monitoring stations and termite baits are widely used in the southern United States with the intent of detecting and eradicating subterranean termite activity near buildings. These stations comprise a wood (or other cellulose material) substrate (monitor) and perhaps a termiticidal toxicant (bait) held in a plastic cage that allows for both easy examination and access by termites. The us...
A M Taylor, Jae-Woo Kim, S Duarte, L Nunes, J D Lloyd
Stabilization of IPBC in wood through the use of organosilicon compounds
2012 - IRG/WP 12-30597
The aim of the research was to increase durability of wood treated with 3-Iodo-2-propynyl butylcarbamate (IPBC). The study used a blend of silanes. Biological examination against microfungi was performed to determine resistance of Scots pine wood treated with the tested formulations. Chemical analysis by the Electrospray Ionization Mass Spectrometry (ESI-MS) of water extracts from the leaching per...
B Mazela, W Perdoch
Interaction between Aspergillus niger fungus and other filamentous fungi on salt-agar medium and their growth on natural wood and wood treated with fungicide
2015 - IRG/WP 15-20569
Aspergillus niger (An) is very often used alone or in mixture with other filamentous fungi of the genus in testing biocides in disinfection procedures, safety, hygiene, medical fields as well as for testing resistance of wood and wood-based materials to moulds. Softwood species as well as hardwood are overgrown with An fungus very easily, causing drop of mainly the aesthetic value of wood product....
A Fojutowski, A Kropacz, A Koziróg
Improvement of wood properties by impregnation with liquefied spruce bark based resins
2016 - IRG/WP 16-40761
In this paper, biobased phenolic thermosetting resins are designed to be used as wood stabilization treatment. The originality of the study stands in substituting part of phenol by spruce (picea abies) bark: this is achieved by a liquefaction process in phenol in the presence of sulfuric acid as catalyst. Next, thermosetting resins are synthetized from liquefied bark by condensation on formaldehy...
X Duret, E Fredon, E Masson, P Gérardin
Hydrolytic stabilization of chemically modified Bambusa vulgaris Shrad ex JC Wendl
2018 - IRG/WP 18-40830
The main drawback which greatly limit the utilisation of bamboos is their high moisture intake, biodegradation and physical properties changes with environmental variations. To prevent excessive dimensional changes and improve moisture properties of bamboo, Bambusa vulgaris was chemically treated with acetic-anhydride without co-solvent. To evaluate the influence of acetylation on the moisture pro...
N A Sadiku, S M Akintayo
A Synergistically Stabilized Oil-in-Water Paraffin Pickering Emulsion Used in Wood Treatment
2018 - IRG/WP 18-40840
Pickering emulsions (emulsions stabilized by solid particles) are attractive as they have strong similarities with traditional surfactant-stabilized emulsions. In this study, an oil-in-water (O/W) paraffin Pickering emulsion system with satisfying stability and small droplet size distribution was developed by hydrophilic silica particles and traditional surfactants as mixed emulsifiers. The drople...
J Jiang, J Cao