DD252149A1 - MEANS FOR THE PROTECTION OF WOOD AND WOODEN FROM WOOD - Google Patents

Abstract

The invention relates to water-soluble and / or organic-soluble wood preservatives based on organic compounds, which are preferably unsaturated butyl compounds.

Description

and Formula II represents a but-2-ene-diol-1,4-derivative.

R is _Si- C-CH ₂ -Ox

I Formula Il

CH-CH ₂ -OX

In both formulas, χ stands for hydrogen, in formula II R _Si for alkoxysilyl radicals.

2. Wood preservative according to item 1, characterized in that the hydrogen substit is substituted by ammonium-substituted sulfate or carboxylic acid residues.

3. Wood preservative according to item 1 and 2, characterized in that the sulfate and carboxylic acid residues are preferably alkylammonium, alkanolammonium- or 8-hydroxyquinoline-substituted and perfluoroalkyl radicals.

4. Wood preservative according to item 1 to 3, characterized in that the alkoxysilyl groups are preferably methoxy or ethoxy.

5. Wood preservative according to item 1 to 4, characterized in that it is preferably straight-chain, cyclic or branched methyl / phenyl-Siloxanylreste or -Polysiloxanylreste.

6. Wood preservative according to item 1 to 5, characterized in that the compounds contain 1 to 15 silicon atoms.

7. Wood preservatives according to item 1 to 6, characterized in that it is in the Polysiloxanylresten to InMe ₂ SiO or mPh ₂ Si0 radicals and nMeSiO radicals, where m is the values 3 to 250, preferably 5 to 120, η the values 1 to 12, preferably 2 to 8, Me represents the methyl radical and Ph represents the phenyl radical. -

8. Wood preservative according to item 1 to 7, characterized in that the content of the active component is between 0.1 and 15 percent by mass, preferably between 0.3 and 3 percent by mass.

Field of application of the invention

The invention relates to water-soluble and / or organic-soluble wood preservatives based on organic compounds for protecting wood and materials from wood against wood-destroying insects and fungi, including soft rot fungi, and holzverfärbende mushrooms. The wood preservatives can be used for first and post protection. The protected wood according to the invention can be installed both under roof and outdoors with and without direct contact with the ground.

Characteristic of the known technical solutions

Numerous organic compounds are already known for protecting wood against wood-destroying fungi and insects and against wood-discolouring fungi. However, experience has shown that the spectrum of action and the duration of action, i.a. due to insufficient UV radiation and Wasserauslaugstabilität severely limited and the use of toxicological parameters are limited.

As organic fungicides are mainly chlorinated phenols, eg. For example, pentachlorophenol, organotin compounds, e.g. B.

Tributyltin derivatives and organic fluorine compounds, eg. B. 'Dichlofluanid used. Pentachlorophenol is only effective in high concentrations against wood-destroying fungi, but can be used only to a limited extent due to insufficient UV stability, lack of efflorescence and high toxicity.

Also, only slightly stable with UV radiation exposure and therefore only effective in high concentrations against wood-destroying fungi, especially against Ascomycetes and Basidiomyceten, but hardly effective against wood-discolouring fungi, are tributyltin compounds, which are also subject to restrictions because of their toxic nature in the application.

Dichlofluanid is indeed an effective and mildly toxic anti-blueing agents, but disadvantageous are hydrolysis sensitivity, low activity against wood-destroying fungi and UV instability.

Wood preservatives which bear both hydrophobing and fungicidal character, which usually contain organosilicon compounds, obtain their effectiveness only in combination with a fungicide.

It is known ζ. As a wood preservative consisting of a Polyethylhydrosiloxan, pentachlorophenol and organic solvent that has hydrophobic effect, but due to insufficient penetration only slightly effective against

Wood damage of plant and animal nature. ,

Also hydrophobic but less fungicidal character carry the Holzschutzkompositionen described in the patent DE 222 963 A1 and DD 137 338 A1, consisting of a polysiloxane, optionally metalloxy groups, or paraffin and an organic solvent.

An improved fungicidal protection is afforded by patent SU 538 890 a wood preservative used paint with polyethylhydrosiloxane, gasoline and a fungicide / but has no special UV stability.

The technical solution according to patent SU 331 893 describes a paint used for wood preservation on the basis of 8-oxyquinoline. However, the effectiveness according to the invention is only realized by a secondary treatment with a vitriol solution.

According to the patents DE 3 224 917 A1 and DE 295 237 708 wood preservatives are also known which contain as active component 8-hydroquinoline and its solubilized copper salt or copper-8-oxyquinoline.

In none of the cited technical solutions werden.weder such parameters as UV radiation stability or corrosion effect against iron taken into account nor are claims for use as a total biocide known.

Object of the invention

The aim of the invention is the development of wood preservatives which ensure on the basis of biocidal active components comprehensive protection of the wood against biological factors whose effectiveness is not or only slightly affected by UV radiation exposure, which exert no corrosion effect on iron materials and leaching stable chromium-free Fix the wood.

Explanation of the essence of the invention

The invention has the object of developing a wood preservative based on preferably water-soluble disubstituted, unsaturated butyl compounds while avoiding enes component mixture of many individual components.

Wood preservatives based on water-soluble or organic-soluble compounds have been found to protect wood, regardless of moisture content, against wood-destroying fungi, including soft rot fungi, against wood-discolouring fungi, and against wood-destroying insects, including termites.

These wood preservatives are characterized by containing as active substances:

- But-2-in-diol-1,4-derivatives of general formula I _1st

C-CH ₂ -OX

I - Formula I

C-CH ₂ -OX

in which χ represents hydrogen, amonium-substituted sulfate or carboxylic acid radicals, in particular alkylammonium, alkanol-ammonium or 8-hydroxyquinoline-substituted and perfluoroalkyl radicals, and - silyl- or siloxanyl-substituted but-2-en-diol-1,4-derivatives the general formula II

Rsi - CH ₂ -0-x

Il Formula Il

CH-CH ₂ -OX

in which χ has the abovementioned meaning and R _si alkoxysilyl radicals, preferably methoxy or ethoxy, straight, cylic or branched methyl / phenyl siloxanyl radicals containing 1 to 15 silicon atoms, or straight or branched Polysiloxanylreste with mMe ₂ Si0- or mPh ₂ Si0 radicals and nMeSiO radicals and m represent the values 3 to 250, preferably 5 to 120, and η represent the values 1 to 12, preferably 2 to 8.

The effectiveness of the compounds of the invention as a wood preservative is that even relatively low concentrations of active ingredients provide considerable protection against damage to the wood and that due to high UV radiation and leaching stability, the range of applications for both indoor and outdoor use compared to the known technical solutions much wider is.

For effective protection against wood-destroying fungi (Ascomycetes and Basidiomycetes), active substance concentrations are between 0.2 and 7.0 kg / m ^{3 of} wood, preferably 0.4 kg / m ^{3 of} wood, and application concentrations between 0.5 and 16 kg / h when exposed to water. m ³ wood preferably 0.7 kg / m ³ wood sufficient.

Surprisingly, in test specimens with an active ingredient order of 1.0 to 15 g / m ² wood surface water storage up to 135 hours does not affect the protective effect against wood-staining fungi, z. B. Pullulatia pullulans. An additional exposure to UV radiation with a radiation duration of up to 369 hours does not reduce the fungicidal activity of the substances according to the invention. They are highly water-leachable and UV-radiation stable. Surprisingly, the substances according to the invention also act as insecticide. They cause z. For example, compared to the termite species Reticulitermes santonensis DE FEYTAUD at the same application concentrations (eg 0.1%), the same mortality (15%) as a commercially available, tested for efficacy and officially approved chromium-fluoro-arsenic salt mixture with 30 weight percent. Arsenic salt shares.

Another not insignificant advantage is that the wood preservatives based on the substances according to the invention do not corrode iron materials.

In addition, it deserves special attention that the fixation takes place without the addition of chromates or / and chromic acid. The wood preservatives according to the invention contain economically and very technologically very attractive biocides with a wide range of applications of total biocides.

embodiments

Example 1:

g H ₂ O g substance A

Example 2:

g acetone g substance B

Substance A: C-CH ₂ -OH

III

C-CH ₂ -OH

Substance B: C-CH ₂ -OC "F _2n _,

I »

C-CH ₂ -OC _n F _2n ., Η = 5 to

Example 3: 99.7 g of H ₂ O.

0.3 g substance C substance C

C - CH ₀ - O - SO.

C - CH ₂ -

- SO.

Example 4: 99.7 g of H ₂ O.

0.3 g substance D substance D:

ft iv

H öri

YV

Me., SiCk Me-Si ·

C-CH ₂ -O-SO ₃

C-CH ₂ -O-SO ₃ [ην (Ch ₂ .ch ₂ oh;

HN (CH ₂ .CH ₂ OH) ₃

Example 5: 99.7 g of H ₂ O.

0.3 g substance E Substance E:

Me ₃ SiO

me

Me ₃ SiO

HC-CH ₂ -SO ₃ ΓH ₂ N (CH ₂ .CHOH.CH ₃ ) ₂ 1

^N - Γ +

-Si-C-CH ₂ -SO ₃ H ₂ N (CH ₂ .CHOH.CH ₃ ),

Example 6: 99.7 g of H ₂ O.

0.3 g substance F substance F:

HC-CH ₂ -O-SiME ₃

(HO) ₃ Si-C-CH ₂ -O-SiMe ₃

Table 1: Limits of the fungus-proof activity in kg of active ingredient per m ^{3 of} wood in accordance with TGL 14140/01 and / 02

active substance Test fungus puteana Chaetomium globosum Coniophora to without to without leaching burden leaching burden '4.0 • 15.0 CuSO ₄ .5H ₂ O a) nafb) 0.4 0.5 ... 10 ... 12 5.0 ... 10.0 6.0 CKF-SaIz c) 2.8 ... 4.0 <1.3 example 1 1.4 ... 2.8 6.9 5.0 5.2 Example 2 d) 4,4 ' ^: <1.3 <0.9 <1.1 Example 3 <1.0

a) Limit value for soft rot fungi in general

b) Brown rot fungus limit in general

c) from ULLMANNS 'Encyclopaedia .... p. 688

d) limit values determined by the probit method

Table 2: Limits of activity against wood-discolouring fungi in g of active ingredient C according to Example 3 per m ^{2 of} wood surface after

Factory standard FORST of IFE 981.1-011 _...: .'....... - -.-

Test fungi: Pulluiaria puliolans, strain 351 and 1132

Type of exposure limit value g / m ²

without load 1,0 ... 1,5a)

after water leaching 1.0 ... 1.5

after water leaching 1.0 ... 1.5

and exposure to UV. '

radiation

a) All test specimens show an increasing inhibition zone on the untreated control surface sides adjacent to the treated areas with increasing concentration of active ingredient. Thus, the wood preservative has a long-range effect.

Table 3: Effectiveness of the substance C according to Example 3 against insects a)

Characteristic unit of measure solution concentration 0.1 CFA substance C Example 3 Substance C Example 3 Mortality from termites LD ₁₅ %. 0.105 LD ₃₀ % 0.185 LD ₉₅ % 2.25 Mass loss b) by termites 3%% 0.185 50%% 0.32

a) forced forcing test according to TGL 18 982/01! Test animal: Termite Reticulitermes santonensis

b) compulsory forcing, filter paper as model substance for wood-cellulose

Table 4: Processing properties of the wood preservative according to Example 3 Characteristic Quantity unit characteristic value

Pick-up pulp in pine sapwood by dip diving

Example 3 g / m ² % 285 0,006 100 Coal tar oil a) g / m ² % .180 63 Dimethyldibenzyl- ammonium chloride a) g / m ² % 130 46 a, 6,23.zl2 Mass loss of Sheet iron b) mg / m ²

a) comparison substance

b) according to TGL 18 973/01

Claims (1)

1. Wood preservative on the basis of substituted, unsaturated butyl compounds, characterized as a compound of the general formula I or formula II, wherein formula I is a but-2-in-diol-1,4 or -derivat O CH2 vjX I Formula I C-CH ₂ -OX