Your search resulted in 142 documents. Displaying 25 entries per page.
Feeding response of field populations of Coptotermes species to softwood blocks treated with non-toxic water-proofing and anti-microbial products.
2003 - IRG/WP 03-10487
The feeding response of field populations of the subterranean termite, Coptotermes lacteus, to Pinus radiata wood blocks (50 x 40 x40 mm) treated with various combinations of non-toxic and odourless water-proofing materials based on natural high molecular weight esters (TimberTreatÒ) and a new water insoluble quaternary ammonium compound (‘anti-microbial’) is described. Treated wood blocks we...
J R J French, T Pynsent, M Susic
Anti-sapstain chemicals for diffusion treatment of rubber wood
1986 - IRG/WP 3367
Performance of Sinesto B and Akzo EN 494, two formulated products of alkyl ammonium compounds, was tested as fungicidal additive in the boron solution to control mould and stain during diffusion storage of rubber wood. Sinesto B at 2.0% (a.i.) concentration has given good control over mould and its protection against sapstain was only satisfactory. Akzo EN 494 at 0.7% (a.i.) concentration has give...
R Gnanaharan
The risk assessment process. Point of view of a biocide manufacturer [Évaluation du risque. Point de vue d'un fabricant de biocide]
1990 - IRG/WP 3568
Risk assessment is an inherent part of our everyday lives. The risk assessment equation combines Hazards and Exposure. For the Wood Preservation Industry, the hazards may be characterised by the toxicity a the ecotoxicity of chemicals and the exposure by the identification of exposed people, of the exposure routes and exposure frequency. To quantify the exposure, good co-operation is required betw...
D Baur
A field trial to assess the potential of antisapstain chemicals for long-term protection of sawn radiata pine
1986 - IRG/WP 3375
Seven chemical formulations were tested as antisapstain treatments for freshly sawn radiata pine sapwood (90x50 mm²). Each formulation was used with and without a water-repellent additive and was sprayed on to 1 m long boards. The boards were then stacked into "mini" packets and stored unprotected from the weather for 6 months. Haipen 50w (at 0.2 or 0.4% active) and NaPCP (1% active) plus 1.5% bo...
J A Drysdale
"XYLOPHENE ANTI-TERMITES" :A complete range of treatment products against termites
2000 - IRG/WP 00-30230
Dyrup-Xylochimie purpose for several years efficient treatment products for timber and wood materials, with its trade mark : "Xylophèn". As everybody know, termites become an important problem for construction in France. So important that, a national law was voted in May 1999, to define areas where termites are present, in order to protect future landowner. To prevent efficiently termites damages...
L Cubizolles, E Wozniak
Methods of testing anti-stain chemicals for protecting sawn timber during storage and transport
1976 - IRG/WP 273
No international standard method for testing anti-stain chemicals for protecting fresh sawn timber exists. The methods used can be divided into three types: a) Rapid screening tests for finding chemicals effective against blue-stain and mould fungi. The chemicals are tested in agar medium, in pieces of filter paper or on small pieces of wood using pure cultures. b) Laboratory tests for evaluating ...
T Vihavainen
What is OECD doing to promote harmonization of biocide regulations
1999 - IRG/WP 99-20182
OECD began work on biocides in 1997 to help Member countries co-operate in the assessment and registration of these products. The work is a part of OECD's Pesticide Programme, and is co-ordinated by the Biocides Steering Group. The goal is to harmonize regulatory approaches to allow countries to conduct evaluations of biocides more efficiently. More efficient evaluations can advance the p...
M Paneli, N Grandy
Laboratory evaluation of anti-sapstain formulations
1989 - IRG/WP 3510
Four formulations were tested for their efficacy in controlling molds and sapstaining fungi on wood according to the Standard-II of Japan Wood Preserving Association (JWPA). Relative efficacy was compared on the basis of visual rating of the fungal growth on the treated and untreated wood surfaces when the wood specimens were exposed to each monoculture of 5 test fungi at 26±2°C and 70-80% for 4...
K Tsunoda
The effect of stack height on the performance of preservatives used for the prevention of sapstain on seasoning wood
1997 - IRG/WP 97-10192
The performance of three anti-sapstain preservatives was investigated under field conditions in south east England. The preservatives under test were: copper-8-quinolinolate (Mitrol PQ8) trimethylalkylammoniumchloride and sodium hexanoate (Sinesto B) and chlorothalonil (Tuff Brite). The preservatives were tested on Corsican Pine grown in south east England. The field trial was set up to investigat...
J R Williams, D J Dickinson, J F Webber
Protection of pine sawtimber and sawn timber against blue stain in Poland
1983 - IRG/WP 3193
The purpose of this paper is the synthesis of more important results of basic and applied research that have been grouped in the following problems: 1.: Fungi causing blue stain in the pine wood, occurring in Poland. 2.: Moisture content changes of pine sawtimber and sawn timber as the factor of blue stain producing fungi development. 3.: Effect of sapwood moisture content on the degree of wood st...
E Tarocinski, M H Zielinski
Some textile auxiliaries as wood protective agents
2007 - IRG/WP 07-30417
This study evaluated some textile auxiliaries applicable for wood protection. Commercial alkoxysilane quarternary ammonium formulation and fluorocarbon based water-oil repellent were tested for their ability to provide hydrophobicity and antifungal effect to solid wood samples. Scots pine (Pinus sylvestris L.) sapwood samples were impregnated with 25, 50 and 100 % concentrations of the above menti...
E Dizman, A Temiz, N Terziev, Ü C Yildiz
Detection of Anti-Fungal Sapwood Extractives in Non-Durable Scots Pine (Pinus sylvestris), Rubberwood (Hevea brasiliensis) and Jelutong (Dyera costulata)
2007 - IRG/WP 07-10634
A general laboratory bioassay method of Woodward and Pearce (1985) was adopted to detect anti-fungal activity of sapwood or heartwood extractives of 5 Malaysian hardwoods [dark red meranti heartwood (Shorea spp.), red balau heartwood (Shorea spp.), kulim heartwood (Scorodocarpus borneensis), jelutong sapwood (Dyera costulata) and rubberwood sapwood (Hevea brasiliensis), including the temperate Pin...
A H H Wong, R B Pearce
Discovering anti-fungal agents in New Zealand native plants for use in wood protection
2009 - IRG/WP 09-10692
Extracts from Hinau (Elaeocarpus dentatus) leaves were tested in the laboratory for antifungal activity. In addition, the anatomical structure of the leaf was also examined by a combination of light and scanning electron microscopy. Chemical characterisation of the extracts and investigation into potential use of its components for wood protection is underway. A combination of light microscopy (...
C Rickard, T Singh, A Singh, R Newman
Evaluation of Water Repellency of Treated Wood Using Several Alternative Methods
2009 - IRG/WP 09-20419
In this study, the results of water repellency testing using a digital swellometer method for water-borne organic-preservative systems with water repellent additives are reported. The findings suggest that the traditional method of using matched untreated controls as a reference developed from historic solvent-based treatments for determination anti-swelling efficacy (ASE) may underestimate the a...
L Jin, A F Preston
Vacuum drying of European oakwood: Color, chemistry and anti-oxidant potency of wood. Improving appearance in forest value added products
2008 - IRG/WP 08-40432
In hardwoods used for decorative and appearance purposes, wood colour is one of the most important factors of wood quality; in addition colour is related with durability and biological decay of wood. Wood discolouration during drying is mainly affected by heat, light, physiological reactions, combinations of reactions, biochemical and chemical reactions, and micro-organisms attack. In freshly fell...
S Sandoval, W Jomaa, F Marc, J-R Puiggali
Synthesis of a rosin amide and its resistance to wood decay fungi
2009 - IRG/WP 09-30517
Rosin was reacted with diethyltriamine (DETA) after being modified by acryl acid with the weight ratio of 4.5:1 and a rosin amide (RA) derivative was produced at the conditions as follows: modified rosin and DETA mole ratio of 1:3.5, dimethylbenzene as water carrying agent, reaction temperature of 160-180°C, and reaction time of 8h. The chemical structure of the product as RA was identified by F...
Shuangyue Li, Shujun Li, Jing Wang
Novel Approaches to the Development and Testing of Anti After-glow Additives for CCA-based Treatments of Poles
2011 - IRG/WP 11-30561
In this paper, a field fire stake testing screen method is described. This method uses stake samples from matched wood sources allowing replicates from different boards to be included. The method is easy to control and can provide quick comparative fire resistance test results. The parameters measured from the tests are percentage weight loss, minimum residual circumference and residual thicknes...
L Jin, P Walcheski, A Preston
Relationships between heat treatment intensity and some conferred properties of different European softwood and hardwood species
2012 - IRG/WP 12-40593
Effect of treatment intensity on conferred properties like elemental composition, durability, anti swelling efficiency (ASE) and equilibrium moisture content (EMC) of different European softwood and hardwood species subjected to mild pyrolysis at 230°C under nitrogen for different durations has been investigated. Independently of the wood species studied, elemental composition is strongly correl...
M Chaouch, S Dumarçay, A Pétrissans, M Pétrissans, P Gérardin
Effects of nano-wollastonite impregnation on fire resistance and dimensional stability of Poplar wood
2012 - IRG/WP 12-40595
The fire-retardant properties of Nano-Wollastonite (NW) in poplar wood (Populus nigra) were determined in this study. Some physical properties such as water absorption, volumetric swelling and Anti-Swelling Efficiency (ASE) were also measured. Specimens were prepared according to the ISO 11925 standard for the fire-retarding properties, and ASTM D4446-2002 standard for the physical properties. Imp...
A Karimi, A Haghighi Poshtir, H Reza Taghiyari, Y Hamzeh, A Akbar Enayati
Coconut shell pyrolytic oil as wood protectant against biodeterioration
2014 - IRG/WP 14-30648
Extensive research on various plant and microbial extracts has been conducted as an alternative to using synthetic or inorganic chemicals for wood protection. Development of effective and low environmental impact products and technologies for wood protection is imperative. In the present study, the efficacy of coconut shell pyrolytic oil as a wood protectant is analysed in terms of its antifungal,...
K S Shiny, O K Remadevi
Improving dimensional stability of thermally treated wood by secondary modification – potential and limitations
2014 - IRG/WP 14-40664
The potential of treating thermally modified wood with melamine resin to improve the dimensional stabilization is tested in this research. Two different boards of poplar (Populus ssp.) were cut into two halves. One half of each board was thermally modified (T1 and T2) in a commercial process, the other half was used as untreated reference material. The material was thermally modified using the vac...
G Behr, K-C Mahnert, S Bollmus, H Militz
Performance of kiln-dried and air-dried anti-sapstain treated pallet timber under use scenarios against wood discolouring fungi
2015 - IRG/WP 30669
During their lifespan there is a high probability that wooden pallets and packaging material will be exposed to rainfall or rewetting conditions, increasing the risk of growth of discolouring fungi. Kiln-drying of wooden pallets and packaging material without anti-sapstain treatment does not give efficient protection against wood discolouring fungi during rewetting periods. However additional temp...
A Steitz, E Stoyanova, N Pfabigan, R Gründlinger
Search for an anti-sapstain treatment for fresh radiata pine wood in compliance with European BPD norms: Field Tests
2015 - IRG/WP 15-30673
In response to the impending restrictions on the use of pesticide active ingredients developed to control the staining of fresh wood, as a result of regulation issued in 2009 by the European Union, a project was proposed to test an alternative anti-sapstain treatment that meets both the European restrictions and the performance required for an export-quality radiata pine fresh wood treatment. A se...
P Montes C, T Hanke W
Effect of the Storage Time of Logs in Anti-Stain Treatment Effectiveness
2016 - IRG/WP 16-30683
Storage of green lumber, for 7 months, operationally treated with anti-stain products, depending on the storage time of the logs (10, 20 and 30 days) post harvesting allows to affirm that with increasing storage time of the logs, occurs a progressive increase in intensity, severity and types of fungi present in the logs. It is further noted, a significant increase in the percentage of sawn lumber ...
M A Peredo, C Barria
Anti-Fungal Activity on Some Wood extracts as a Wood Protectant
2016 - IRG/WP 16-30684
In this study, six different wood barks were used, where obtained bark extracts were blended with potato-agar in order to investigate their antifungal properties. To determine the inhibition effectiveness of extractives, two different fungi; Coniophera puteana and Trametes versicolor were selected. Fungal activity was carefully observed for the duration of seven days. Following biological testing,...
Ö Özgenç, S Durmaz