RU2256552C1 - Antiseptic wood-impregnation composition - Google Patents

Abstract

FIELD: woodworking industry.

SUBSTANCE: invention relates to antiseptic compositions based on petroleum-origin impregnating materials serving to protect against fungal and bacterial damage, in particular for impregnating wood crossties and timbers. Antiseptic contains organic-origin long fraction, namely high-viscosity resin, which is alkylbenzene processing waste, mixed with low-viscosity ethylbenzene resin, thermal-origin long oil fraction 220-450°C mixed with thermocatalytic-origin middle-distillate fraction 180-350°C, and 2-3% of benzyl(4-methylene-1,3-dioxolanyl)amine.

EFFECT: enhanced bactericide activity.

2 cl, 1 dwg, 4 tbl

Description

The invention relates to compositions of oil impregnating materials and can be used to protect wood from damage by fungi and bacteria, in particular for impregnation of wooden sleepers and beams.

Known oil impregnating material (antiseptic) based on coal oil. Coal oil used for impregnation of sleepers is a mixture of absorption oil (25 vol.%) And anthracene fraction (75 vol.%), Which is a diluent [1]. These fractions are obtained in the process of rectification of coal tar formed during thermal coking of coal in order to obtain blast furnace coke.

The chemical composition of the absorption oil (fraction 235-300 ° C) and the anthracene fraction (fraction 280-360 ° C), as well as coal tar oil, are given in Table 1.

Table 1.
The chemical composition of coal-bearing cross-impregnating oil and its components Components Absorption oil Anthracene fraction Coal tar oil Neutral part Higher homologues 0.48 0.39 0.42 Naphthalene 19.10 1.97 6.28 a-methylnaphthalene 5.48 0.78 1.96 R-methylnaphthalene 8.11 1.18 2.90 Other homologues ... 7.45 1.44 2.94 Indole 1.73 0.13 0.53 Diphenyl 2.54 - 0.63 Acenaften 12.73 1.93 4.63 Fluoren 0.04 2,35 3.28 Diphenylene oxide 4.4 1.25 2.05 Anthracene 0.79 4.97 3.92 Phenanthrene 0.96 21.22 16.16 Carbazole 0.52 5.69 4.40 Pyrene - 5.37 4.03 Others: High boiling point. 14,99 40.35 34.02 Unlimited 3.07 - 0.76 Sulfur compounds 3.22 5.43 4.87 Phenol 0.14 - 0,03 0-cresop 0.24 - 0.06 M-cresol 0.32 - 0.08 P-cresol 0.19 - 0.06 Xylenols 0.76 0.28 0.40 High boiling phenols 1.95 2,52 2,37 grounds Pyridine homologues 0.24 - 0.06 Quinoline 1.15 0.05 0.33 Quinoline homologues 1.39 0.214 0.53 Other grounds 2.02 2.41 2,31

The disadvantage is the low degree of protection of the sleepers and timber beams from damage by fungi and bacteria, coal oil is the first (extremely dangerous substance) by the degree of impact on the human body.

Known oil-based antiseptic resin-based with thermal oil "ASTM", which has protective (biocidal) and impregnating (penetrating) properties with respect to wood at a level not inferior to coal tar-impregnating oil, which is a homogeneous mixture of products of petroleum and petrochemical origin with a high degree aggregative stability (does not separate, the sediment does not form) [2]. The resin-based oil-based antiseptic with ASTM thermal oil, including a wide organic fraction mixed with a diluent, contains a high-viscosity organic-processing resin mixed with a low-viscosity ethylbenzene resin as an organic diluent and a wide oil oily fraction as a wide organic fraction. 220-450 ° C) of thermal origin in a mixture with a medium distillate oil fraction (180-350 ° C) of thermocatalytic origin as an organic of the diluent in the following ratio, wt.%:

High viscosity alkyl benzene processing resin

and low viscosity ethylbenzene resin 40-50

Wide oil oily fraction (220-450 ° С)

thermal origin and middle distillate

oil fraction (180-350 ° С) of thermocatalytic

origin 50-60

moreover, a high-viscosity resin for processing alkylbenzene mixed with a low-viscosity ethylbenzene resin, it contains the following

ratios, wt.%:

High-viscosity alkyl benzene processing resin 60-80

Low viscosity ethyl benzene resin 20-40

and a wide oil oily fraction (220-450 ° C)

thermal origin in a mixture with a medium distillate oil fraction (180-350 ° C) it contains at the following ratios of components, wt.%:

Wide oil oily fraction (220-450 ° С) 80-85

Middle distillate oil fraction (180-350 ° С) 15-20

The chemical composition of the "ASTM" is given in table.2.

Petroleum impregnating antiseptic "ASTM" is obtained by mixing a high-viscosity resin for processing alkylbenzene, a wide oily fraction of 220-440 ° C of thermal origin as wide fractions of organic origin and a low-viscosity ethylbenzene resin, production of ethylbenzene, medium distillate fraction of 180-350 ° C of thermocatalytic origin as diluents .

The disadvantage of the ASTM oil impregnating antiseptic is the low degree of protection of the sleepers and timber beams from damage by fungi and bacteria.

The objective of the invention is to increase the biocidal properties of the antiseptic oil impregnating "ASTM" on a resin basis with thermal oil by adding benzyl (4-methylene-1,3-dioxolanyl) amine.

The essence of the invention lies in the fact that the composition is antiseptic for wood impregnation based on an antiseptic oil impregnating "ASTM" on a resin basis with thermal oil, including a wide fraction of organic origin mixed with a diluent, according to the invention additionally contains benzyl (4-methylene-1,3 -dioxolanyl) amine in an amount of 2-3 wt.% in the following ratio of components:

benzyl (4-methylene-1,3-dioxolanyl) amine 2-3 wt.%

oil impregnating antiseptic "ASTM" rest

As a broad fraction of organic origin, the ASTM petroleum impregnating antiseptic contains a high-viscosity resin for processing alkylbenzene mixed with a low-viscosity ethylbenzene resin as an organic diluent and a wide oil oily fraction (220-450 ° C) of thermal origin mixed with a medium distillate oil fraction (180- 350 ° C) of thermocatalytic origin as an organic diluent in the following ratio of components, wt.%:

High viscosity alkyl benzene processing resin

and low viscosity ethyl benzene resin 40-50

Wide oil oily fraction (220-450 ° С)

thermal origin and middle distillate

oil fraction (180-350 ° С) of thermocatalytic

origin 50-60

moreover, the high-viscosity resin for processing alkylbenzene mixed with low-viscosity ethylbenzene resin, it contains in the following proportions, wt.%:

High-viscosity alkyl benzene processing resin 60-80

Low viscosity ethyl benzene resin 20-40

and a wide oil oily fraction (220-450 ° C) of thermal origin in a mixture with a medium distillate oil fraction (180-350 ° C) it contains at the following ratios of components, wt.%:

Wide oil oily fraction (220-450 ° С) 80-85

Middle distillate oil fraction (180-350 ° С) 15-20

It is known that nitrogen-containing derivatives of 1,3-dioxolanes have a combination of valuable properties and are used as effective inhibitors, antioxidants, surfactants, biocides [3].

The authors synthesized a new compound based on 4-chloromethyl - 1,3-dioxolane benzyl (4-methylene-1,3-dioxolanyl) amine. Benzyl (4-methylene-1,3-dioxolanyl) amine is prepared by reacting 4-chloromethyl-1,3-dioxolane with benzylamine

Benzyl (4-methylene-1,3-dioxolanyl) amine is a colorless oily liquid, insoluble in water, boiling point is 195 ° C.

For a qualitative and quantitative analysis of the starting compounds and reaction products, a chromatograph with a flame ionization detector was used. Spectral measurements were performed on a Tesla BS527 spectrometer.

The drug is obtained by direct compounding of the starting components at room temperature and stirring for 1 hour, in the following proportions:

ASTM 99.5% by weight + benzyl (4-methylene-1,3-dioxolanyl) amine 0.5% by weight;

"ASTM" 99 wt.%. + benzyl (4-methylene-1,3-dioxolanyl) amine 1 wt.%;

"ASTM" 98 wt.%. + benzyl (4-methylene-1,3-dioxolanyl) amine 2 wt.%;

ASTM 97% by weight + benzyl (4-methylene-1,3-dioxolanyl) amine 3% by weight.

Tests of the new drug for mushroom resistance were carried out in accordance with GOST 9.050-75 [4].

Samples of wood for testing shall be in the form of plates measuring 25 × 5 mm. For testing, samples of wood species of various classes of resistance to damage by fungi were used.

Class Wood species Persistent Common pine Medium resistant Spruce Low resistant Birch Unstable Linden

Samples are treated with the test substance with the addition of benzyl (4-methylene-1,3-dioxolanyl) amine in a concentration of 0.5-3 wt.%, Untreated wood is used as a control.

The following micromycetes were used for testing:

Aspergillus niger, Altemaria sp., Fusarium sp. No. 56, Penicillium chrysogenum, Trichoderma viride.

Wednesday апapek - Dox with agar is poured into Petri dishes. Then prepare a suspension of spores of fungi with a titer of 10 ⁶ cells / ml. Samples of wood are introduced into Petri dishes, transferred to a box, and the surface of the samples and the medium are infected with a prepared suspension of fungal spores. The duration of the test from the moment the regime was established when determining the fungicidal properties was 14 days.

An antiseptic has fungicidal properties if there is an inhibitor zone (a zone of the absence of fungal development) around the sample on the nutrient medium or fungal development is observed on the surface or edges of the sample, rated 0 and 1 on a five-point scale:

0 points - completely resistant samples - no changes;

1 point - resistant samples - slight color changes, surface points and fouling spots up to 1% of the surface;

2 points - satisfactory samples - the appearance of dots and spots of fouling 1 ... 5% of the surface;

3 points - low-resistant samples - continuous fouling up to 10% of the surface;

4 points - unstable - continuous fouling 10 ... 50% of the surface;

5 points - completely unstable samples - continuous fouling of more than 50% of the surface.

Table 3.
Assessment of mushroom resistance of wood samples Impregnating substance Wood species Mushroom resistance score ASTM Pine 4 spruce 4 Birch 5 Linden 5 ASTM + 0.5% benzyl (4-methylene-1,3-dioxolanyl) amine Pine 3 spruce 3 Birch 4 Linden 4 ASTM + 1% benzyl (4-methylene-1,3-dioxolanyl) amine Pine 1 spruce 2 Birch 2 Linden 3 ASTM + 2% benzyl (4-methylene-1,3-dioxolanyl) amine Pine 0 spruce 0 Birch 1 Linden 2 ASTM + 3% benzyl (4-methylene-1,3-dioxolanyl) amine Pine 0 spruce 0 Birch 0 Linden 1 Control: untreated wood Pine 5 spruce 5 Birch 5 Linden 5

The drawing shows wood samples treated with an antiseptic in a concentration of 0.5% (a), 1% (b), 3% (c), and without treatment (d) in an agarized nutrient medium.

As can be seen from the above data, the addition of benzyl (4-methylene-1,3-dioxolanyl) amine to the well-known petroleum impregnating antiseptic "ASTM" significantly improves its antiseptic properties, and at a concentration of benzyl (4-methylene-1,3-dioxolanyl) amine 2% there is a complete suppression of mushroom growth for all classes of wood.

The bactericidal properties of the new drug in relation to sulfate-reducing bacteria (SFS) were studied by a known method [5].

The culture of Desulfovibrio desulfuricans VKMB-1388 was used as an SVB.

Bactericidal activity was determined as follows: ASTM with sterile benzyl (4-methylene-1,3-dioxolanyl) amine in various concentrations: 1, 2, 3 wt.% Was introduced into the medium containing SVB under sterile conditions. The finished preparation was added in an amount so that its content in a 100 ml flask was 0.1, 0.2, 0.3 wt.%, Then the concentration of benzyl (4-methylene-1,3-dioxolanyl) amine in the flask would be 0.01, 0.02, 0.03 wt.% . At the same time, a control sample was added without the addition of a bactericide. After 15 days, bactericidal activity was determined. Bactericidal activity was assessed by the degree of inhibition of the growth of SSC.

Table 4.
Evaluation of the bactericidal properties of a new drug Substance The degree of inhibition of growth,% ASTM fifty ASTM + 1% benzyl (4-methylene-1,3-dioxolanyl) amine 80 ASTM + 2% benzyl (4-methylene-1,3-dioxolanyl) amine 100 ASTM + 3% benzyl (4-methylene-1,3-dioxolanyl) amine 100

As can be seen from the above data, the addition of benzyl (4-methylene-1,3-dioxolanyl) amine to the well-known petroleum impregnating antiseptic "ASTM" significantly improves its bactericidal properties, and at a concentration of benzyl (4-methylene-1,3-dioxolanyl) amine 2 wt.% There is a complete suppression of the growth of SVB.

The present invention can be used for impregnation of wood, in particular for the impregnation of wooden sleepers and beams in order to protect them from damage by fungi and bacteria in the impregnation plants.

Literature

1. GOST 2770-74. Coal oil for wood impregnation.

2. Pat. 2093353. Oil impregnating antiseptic ASTM for wood / L.V. Dolmatov, A.F. Akhmetov, V.S. Terentyev, O.S. Fadeeva.

3. Ilyichev V.D., Bocharov B.V., Anisimov A.A. Biodeterioration. - M .: Higher school, 1987. - P.247, 311, 312.

4. GOST 9.050-75. Unified system of protection against corrosion and aging. Varnish-and-paint coatings. Laboratory test methods for resistance to mold.

5. Egorov P.A. Workshop on microbiology. - M .: Moscow State University, 1983. - S.67-70.

Claims (2)

1. The composition is antiseptic for wood impregnation based on an antiseptic oil impregnating "ASTM" on a resin basis with thermal oil, containing a wide fraction of organic origin in a mixture with a diluent, characterized in that it further contains benzyl (4-methylene-1,3-dioxolanyl) amine in the following ratio of components, wt.%: Benzyl (4-methylene-1,3-dioxolanyl) amine 2-3 Oil impregnating antiseptic "ASTM" Else 2. The composition according to claim 1, characterized in that, as a wide fraction of organic origin, it contains a high viscosity resin for processing alkylbenzene mixed with a low viscosity ethylbenzene resin as an organic diluent and a broad oil oily fraction (220-450 ° C) of thermal origin in the mixture with a middle distillate oil fraction (180-350 ° C) of thermocatalytic origin as an organic diluent in the following ratio of components, wt. %: High viscosity alkyl benzene processing resin and low viscosity ethylbenzene resin 40-50 Wide oil oily fraction (220-450 ° С) thermal origin and middle distillate oil fraction (180-350 ° С) of thermocatalytic origin 50-60 moreover, a high-viscosity resin for processing alkylbenzene mixed with a low-viscosity ethylbenzene resin, it contains in the following proportions, wt. %: High-viscosity alkyl benzene processing resin 60-80 Low viscosity ethyl benzene resin 20-40 and a wide oil oily fraction (220-450 ° C) of thermal origin in a mixture with a medium distillate oil fraction (180-350 ° C) it contains in the following ratios of components, wt. %: Wide oil oily fraction (220-450 ° C) 80-85 Distillate oil fraction (180-350 ° С) 15-20