Wood preservative formulations comprising isothiazolones which provide protectin against surface staining

一种异噻唑酮、木材防腐的技术，应用在木材处理、浸渍木材、木材浸渍等方向，能够解决不提供防表面变色等问题

Active Publication Date: 2013-02-27
ARCH TIMBER PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-metal based alternatives, such as azoles, generally only provide protection against fungal decay and provide little protection against surface discoloration

Method used

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  • Wood preservative formulations comprising isothiazolones which provide protectin against surface staining
  • Wood preservative formulations comprising isothiazolones which provide protectin against surface staining
  • Wood preservative formulations comprising isothiazolones which provide protectin against surface staining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0196] A field trial was initiated in which various formulations were tested for their ability to maintain wood in a discolored and mold-free condition for an extended period of time.

[0197] The formulation was prepared by adding all water-insoluble components (e.g., azoles, isothiazolones, any insoluble acids, etc.) to a solvent (Downer (Dowanol )) and stir until all dissolved. Then, the surfactant is added with stirring, followed by the water. Add any water-soluble additives (eg, sodium benzoate) last.

[0198] "a.i." as used in these examples is the active ingredient.

[0199] The following products are used for each active ingredient.

[0200] Prevent (Preventol ) (95% a.i. Tebuconazole)

[0201] Watson (Wocosen ) (50% a.i. propiconazole)

[0202] Viquins (Vanquish ) (99% a.i. BBIT)

[0203] Exeterside (Acticide ) (45% a.i. OIT)

[0204] Exeterside (Acticide ) (20% a.i. BIT)

[0205] The formulations used for testing are as follows (all value...

Embodiment 2

[0273] The following formulations were formulated and tested using the same protocol as described in Example 1.

[0274] Formulation II-1

[0275]

[0276]

[0277] When applied to wood, dilute to equal 100ppm OIT.

[0278] Formulation II-2

[0279]

[0280] When applied to wood, dilute to equal 100ppm OIT.

[0281] Formulation II-3

[0282]

[0283] When applied to wood, dilute to equal 100ppm OIT.

[0284] Formulation II-4

[0285]

[0286] Diluted to equal 100ppm OIT, then combined with 0.03w / w abietic acid and applied to wood.

[0287] Formulation II-5

[0288]

[0289] Dilute to equal 100ppm OIT, then combine with 0.03w / w sodium salicylate and apply to wood.

[0290] Formulation II-6

[0291]

[0292] Diluted to equal 100ppm OIT, then combined with 0.03w / w oleic acid and applied to wood.

[0293] Respectively Figures 13 to 18 Photographs are shown of wood treated with formulations II-1 to II-6 after 25 weeks of exposure. From these figures i...

Embodiment 3

[0295] The pine edge board pieces were cut into 134x68x20mm pieces which were then treated with a wood preservative treatment solution. The formulation was applied to the blocks by wet vacuum at 80 kPa (600 mmHg) for 45 minutes in the treatment solution, followed by 1 hour at 1.2 MPa (12 bar) pressure. According to the average retention target of the treatment solution (retention target) is 650kg / m 3 to process the block.

[0296] The following products are used for each active ingredient:

[0297]

[0298] The formulations used for testing were as follows (all values ​​are given in %w / w):

[0299] Formulation III-1-1 (comparison)

[0300]

[0301]

[0302] This concentrate is then diluted to 0.45% with water.

[0303] Formulation III-1-2 (comparison)

[0304]

[0305] This concentrate is then diluted to 0.45% with water.

[0306] Formulation III-1-3 (comparison)

[0307]

[0308] This concentrate is then diluted to 0.45% with water.

[0309] Formulation...

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PUM

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Abstract

The present invention provides a wood preservative formulation comprising an isothiazolone, an organic fungicidal timber decay preservative and an unsaturated carboxylic or sulphonic acid, salt or precursor thereof. The formulations of the invention are surprisingly effective at protecting wood and other cellulosic substrates, in particular at providing prolonged protection against in- service surface staining. The invention also provides methods for treating wood and other cellulosic substrates with said formulations.

Description

technical field [0001] This invention relates to formulations for the protection of wood and other cellulosic substrates from decay and discoloration by fungi and other biological organisms. Background technique [0002] Wood products are often attacked by various types of biological organisms, including mold, fungi and insects such as termites. Depending on the environmental conditions in which the wood product is used, some types of infestation are more prone to occur than others. For example, a wood product left indoors tends to dry out and have a low moisture content, whereas a wood product used outdoors and exposed to environmental conditions, such as rainfall, will tend to have a much higher moisture content. Likewise, wood products that remain in water during use, for example for offshore applications such as docks, face different threats than wood products stored in soil or on the ground. Thus, different types of preservative compositions are required depending on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/80B27K3/50A01N43/653A01P3/00
CPCA01N43/52A01N43/50A01N43/653B27K3/343B27K3/34A01N53/00A01N43/80B27K3/50B27K3/42A01N37/02A01N37/10A01N2300/00A01N37/06B27K3/52A01N25/04A01N43/84B27K2240/20
Inventor P·S·沃伯顿L·梅森A·S·休斯
Owner ARCH TIMBER PROTECTION
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