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Methods and compositions for retarding and eradicating infestation in trees and tree derived products

a technology for eradicating infestation and trees, applied in the field of methods and compositions for retarding and eradicating infestation in trees and tree derived products, can solve the problems of inconvenient addition of diluent, affecting the effect of diluent,

Inactive Publication Date: 2001-12-13
NISUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] It is also an object of the present invention to provide for compositions which are useful for protecting cut timber, lumber, and other similar tree derived products from infestation, and which are useful in retarding or eradicating existing infestation. Methods of using such compositions are also an object of the present invention.
[0133] As previously described, another method of applying the formulations of the present invention is particularly well suited for wood which has already been weather treated. In such cases, the injection of solutions of the present invention may avoid the need to strip off existing weather protection. Of course, it may be possible to deliver a sufficient amount of the formulations of the present invention to a piece of wood by injection in only one spot, it is preferred that a plurality of injections be used equally spaced throughout the treated wood, based on the dimensions of wood, target infestation, dilution factor, wood porosity and desnity, ease of access and the like.

Problems solved by technology

While lumber and other wood based products derived from trees are not perishable, they are, nevertheless, susceptible to a host of natural destructive forces.
Living, growing trees are also subject to attack from insects and fungi.
However, the Bechgaard patent specifically teaches that such additions of diluent are disadvantageous because aqueous solutions of the active ingredient diffuse into the wood more slowly.
However, despite these and other wood preservative products and methods, nothing has been found to be completely satisfactory for a variety of reasons.
Such compounds are environmentally hazardous, many pose safety risks to persons and animals, and create difficult and expensive disposal problems.
However, the viscous ethylene glycol solutions taught therein are not applicable to all situations and not suitable for a number of application techniques.
Furthermore, testing has established that the compositions of Bechgaard are not effective in either rapid or deep penetration.
Finally, all of the treatments previously described are limited to timber, lumber and tree derived products.

Method used

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  • Methods and compositions for retarding and eradicating infestation in trees and tree derived products

Examples

Experimental program
Comparison scheme
Effect test

example ii

[0151] Preserving Stain--Clear

[0152] In a Brighton mixer were combined 27.11 wt. % of UNOCAL 1018 (Styrene-acrylate) (polymer emulsion) and 21.92 wt. % of deionized water (diluent). These were then mixed for three minutes. Then a UV package (17.0% TINUVIN 1130 U.V. light inhibitor, 34.14% TINUVIN 292 U.V. light inhibitor, 48.78% TEXANOL solvent) in an amount of about 1% by weight of the formulation was added along with 1.7% by weight of glycol ether EB (cosolvent) and were mixed for about 10 min. Thereafter, the following were added under continuous agitation.

[0153] 0.036 wt. % Colloids 681-F (defoamer)

[0154] 0.50 wt. % Daxad 30 (pigment dispersement)

[0155] 0.001 wt. % Triton X-405 (surfactant)

[0156] 32.30 wt. % D.I. Water (diluent)

[0157] 2.72 wt. % Ethylete Glycol (retards film formation)

[0158] 0.01 wt. % Kathon Lx 1.5% (in-can preservative)

[0159] 3.70 wt. % AQUABEAD 418E (water repellant usage)

[0160] 9.00 wt. % Undiulted formulation of the present invention comprising insecticide ...

example iii

[0163] The formulations of the present invention have been found to be particularly useful for the treatment of low and moderate moisture content wood. Wood found in the home and typically constructed structures usually has a moisture content of between about 15% and about 30%. In wood with such a moisture content, the formulations of the present invention have a much higher rate of penetration than conventional formulation such as those disclosed in Bechgaard. As noted previously, within 24 hours of the application of the formulations of the present invention to general structural lumber, and usually within about 1 hour after application, the wood so treated is dry to the touch. Wood treated with the solutions according to Bechgaard remain tacky to the touch for in excess of one week. The penetration rate is also evident from the following example which uses wood having a moisture content even lower than commonly encountered:

[0164] 1. Three formulations in accordance withe present ...

example iv

PENETRATION TEST OF PINE LOG

[0179] An eight inch diameter, three foot long, white pine log was determined to have a moisture content of approximately 28%. The basic formulation in accordance with the present invention represented by (a) in EXAMPLE III was applied by brush to the circumference of the log. No. solution was applied to the ends.

[0180] Two days later another coat was applied by brush. Again, nothing was applied to the ends.

[0181] After four weeks a cross section sample was taken from the middle of the log about 1-1 / 2 feet from the end. The cross section sample was air dried for 10 days, then sprayed with curcumin indicator in order to determine borate penetration across the grain.

[0182] The borate was found to be uniformly distributed across the entire cross section sample. There did not appear to be any zone of high borate concentration vs low concentration. It was clear that the borate consitituent of the formulation in accordance with the present invention had penetra...

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Abstract

The present invention relates to compositions and their methods of manufacture and use which are effective for delivering a homogeneous distribution of a boron containing active ingredient to a tree or tree derived substrate for the purpose of preventing or eradicating an infestation and / or for imparting flame retardency thereto.

Description

[0001] The present invention relates to compositions for use with living trees, cut timber or lumber, and other wood based products. These compositions provide protection and relief from infestation such as insects and fungi. Methods of using these composites are also contemplated.[0002] While lumber and other wood based products derived from trees are not perishable, they are, nevertheless, susceptible to a host of natural destructive forces. These primarily include attack by insects, such as termites, carpenter ants and the like and fungi such as brown (Poria Sp.) and white (Polyporous Sp.) wood decay fungi (Poria Incrassata). Living, growing trees are also subject to attack from insects and fungi.[0003] Many protective treatments have been developed for the protection of lumber and other tree derived products. For example, Bechgaard, U.S. Pat. No. 4,610,881 relates to a protective composition with a penetrating carrier which comprises a mixture of ethylene glycol and a borate-con...

Claims

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Application Information

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IPC IPC(8): A01N59/14B27K3/52
CPCA01N59/14B27K3/52C08L71/02A01N2300/00C08L97/02A61K33/22
Inventor PALMERE, VINCENT R.DIETRICH, ALLAN H.GALYON, STANLEY D.
Owner NISUS CORP