Compositions: coating or plastic – Coating or plastic compositions – Contains fireproofing or biocidal agent
Patent
1998-06-09
2000-09-26
Brouillette, D. Gabrielle
Compositions: coating or plastic
Coating or plastic compositions
Contains fireproofing or biocidal agent
106 1832, 252403, 424413, 424 84, 424405, 514359, 514383, C09D 514, C09K 1522, A01N 2534, A01N 4364
Patent
active
061237566
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a wood preservative which is particularly suitable for the protection of wood against wood-attacking insects. The preservative contains the usual carriers and aids and is suitable both for the preventive protection of wood as well as for combating an existing outbreak.
For the protection of wood against destruction and quality impairment due to attack by injurious organisms, particularly insects and fungi, chemicals with biocidal action have been used extensively to combat the respective injurious organisms. Use also has been made of insecticides such as neurotoxins which have a non-specific action mechanism, and the potential to effect the environment adversely. For this reason, most of the preparations used so far have demonstrated more or less pronounced drawbacks as regards their environmental compatibility when inexpertly used.
There is therefore a great need for environmentally compatible wood protective agents which, in the event of inexpert use, reduce to the technically achievable minimum the danger of such agents to the health of operators and end consumers. The manner in which biological or biogenic wood preservatives has been used has not so far been seen to lead to an achievement of the aim. All the substances offered so far as "biological wood preservatives", which contain, for example, balsam terpentine oil and wood vinegar have not been able to meet the demands made on wood preservatives. Particularly, against the main wood destroyers, the house longhorn (Hylotrupes bajulus), woodworm (Anobium punctatum) and bark beetle (Lyctus brunneus), it is still necessary to use highly active chemicals.
The use of insect hormones against an insect attack has long been known from integrated plant protection studies. In particular, use has been made of analogues and mimetics of moult and cocoon hormones, that is, insect juvenile hormone analogues and ecdysone agonists. These agents, because of their hormonal character, are used in the lowest application concentrations, and are highly selectively insect active, the selectivity being so specific that only individual orders of insects such as beetles are covered, and useful insects in other orders such as hymenopters are very largely spared.
These agents have not yet been used in wood preservation, as this group of active substances had not yet been available and organo-chlorine insecticides and synthetic pyrethroids were popularly used for this purpose. In addition, as there were drawbacks still attached to the use of first generation insect hormonal analogues (higher steam pressure, hydrolysis instability), these agents did not come into consideration as wood preservatives.
The object of the invention is to provide a wood preservative which is at least equivalent to the preservatives being used currently and which meets present-day environmental compatibility and toxicology standards. The agent should be long-lasting and afford reliable protection, particularly against attack by wood-destroying insects. Furthermore, the wood impregnated with the agent should, after the useful life of the construction expires, be re-usable without problems or consequences for the environment.
The present invention provides a wood preservative which contains one or more insect hormones and/or their analogues or mimetics, which control egg development, moulting or cocooning of insects, in a concentration of 0.00005 to 0.5 weight %, based on the total weight of the composition. The composition also may contain triazole compounds, particularly triazole fungicides, the combination bringing about a synergetic effect.
According to the invention, insect hormones which may be used include juvenile hormones and ecdysone as well as their analogues and mimetics. These hormones have an effect on the hormonal control systems of insects, controlling embryonal development in the fertilized egg, moulting in the larval stage, and, at the end of the larval stage, cocooning and development to the mature organism. As long as the juvenile hormone is present, the insect
REFERENCES:
patent: 3910894 (1975-10-01), Wah Wat
patent: 4656189 (1987-04-01), Bowers
patent: 5196407 (1993-03-01), Goletz et al.
patent: 5248450 (1993-09-01), Metzner et al.
patent: 5308859 (1994-05-01), Metzner et al.
patent: 5434181 (1995-07-01), Kodaka et al.
patent: 5714507 (1998-02-01), Valcke et al.
patent: 5804591 (1998-09-01), Valcke et al.
"Use of the Insecticide Fenoxycarb as a Wood Preservative." Chemical Abstracts, vol. 117, No. 14 (Oct. 5, 1992).
Research Disclosure, No. 338 (Jun. 1992).
Derwent Abstract of JP 01 233 205 of Sep. 1989.
Pallaske Michael
Poppen Heinrich
Brouillette D. Gabrielle
Cole Monique T.
Remmers Bauchemine GmbH
LandOfFree
Wood-protecting agent does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wood-protecting agent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wood-protecting agent will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2096390