SU559614A3 - The way to combat algae and / or water weeds - Google Patents

Description

one

This invention relates to chemical means for controlling undesirable vegetation, namely, for the destruction of algae and other weeds in water bodies.

It is known that various compounds of bivalent copper are used to clean water from overgrowing with grass and algae. For example, carbonate, bicarbonate and other salt compounds of copper. Copper azide, copper oxide, and mixtures of the above are also used.

O; no known substances of this type are sufficiently effective and are required in large doses.

The aim of the invention is to increase the efficiency of the method of controlling undesirable vegetation in water bodies with the help of phytotoxicants.

This is achieved by using as a phytotoxican a complex of a complex II copper compound capable of complexing and an amine of the general formula

R2

R

/

K-R-iSf, -n

where R, R,, - independently of one another hydrogen or alkyl C —C3;

R is a linear or branched alkylene with a carbon number of 2-6;

 or an amino lkylene-alkanolamine with the number of carbon atoms in the aakylene chain Cj-Cs and the number of carbon atoms in the alkanol group C2-C5, taking into account that aminoalkyl alkanolamines should be used in the complex with copper salts 11 and only on the day of the destruction of water weeds .

As copper compounds capable of complexing, use of substances such as hydroxide, sulfate, nitrate, chloride, bryumid, chlorate, sulfamate, formate, acetate, nitrate, tartrate, benzoate, g of yukonate, basic carbonate, basic chloride, or basic sulfate of copper Amines The formulas are alkylenediamines and polyalkylene polyamines, for example, ethyldiamine, dipropylene triamine and others.

In order to obtain the complexes according to the invention, not only an individual amine can be used, but a mixture of various amines. This forms a complex with different ligands.

Cnoi.i.io 11c archeryIt {) depot X complexes of ixjuuBaii io .. haughter of 1J copper compounds with aMiiuaNs-i U environment. The precognitive cooler ratio of pcaieHioK lies in the region of 1-Sh moles of amine per i.aiOM elemental slow, mainly i-5 moles per I I.aioM of copper, preferably 1-3 moles of amine per 1 g-atom of copper.

lljieiiapaiHBHbie forms of complexes can be sherdyl or liquid. They are prepared and applied in the usual ways, for example, by splitting the rods.

The copper content in the solutions and preparations of the nahilts complexes is about 12–12 wt.%; The pH of the complexes in the form of liquid forms is preferably 6-12.

The complexes are U1C so that, after application, the treated water contains copper at 0.3 b ppm, preferably CiibHO 0.5 1 ppm in ne) based on elemental copper. Such have admissible kor1kh) Zion properties concerning matiinam and the equipment. They are stable in interstitial media and primodes for use in alkaline waters.

EXAMPLE 1 1 mol of copper sulfate peitagidrate (ilCM) is introduced into reakilu with isomeric acid with 2 moles of 91 -) 3; -ethylshamine (EDL). The reaction proceeds with a large amount of heat. Pentagidrag copper sulfate is added in portions of 1/2 ohm over 1/2 hour so that the temperature remains lower. The DarkHeath solution is diluted with water using a syrup that the concentration of copper (about 1 ohm of the elemental me; w) becomes 7Vf. The resulting solution has the following properties.) Chemical properties: pH 11.5, specific gravity 1.182 at. In sowing 13.6 sps at 2 5 ° C.

II p and m e r 2. In solution.

567 l of water are poured into the tank and 187.8 k1 99 / f-Hoio is loaded:) chileamine (EDA). Temperature bury ne | Evenly, the temperature was about 56 ° C. With stirring, 4 kg of pentaylate hydrate copper sulfate (PSM) crystalline (specifications: JUL n} x walking sieve in 30 oiiiOjicuiH (.UJ Mciii), VS.i-Hix; not

The cutter sieve 100 ogve (hthii) for 5 mil. Temperature according to; After every half hour, add more cells but 45 kg of KpHcraJUiH4ecKoro PSM, until the total number of PSM reaches 390 kg. The calculated molar ratio of EIA / tu is equal to 1.998: 1, taken from analysis of copper and crystalline PSM and equal to 25.19, pI pacivore 8.0. After the addition of 100 liters of water and 5 kg of 99l ED and the subsequent 15 min of stirring, the pI reaches 10.6. The copper content is 8.12%, the specific gravity at 25 ° C is 1.224.

.Analytical data on the physical properties of the solution.

Found,%: Cu 8.12; EDA 15.24; NzO64, B7, C 6.48; H 9.32; N 7.31; 5 11.3.

Calculated, Us ,: Si 8.00; C 6.05; H 9.28; N7.05; SO4 12.08.

Viscosity at 25 ° C 14.5 sps. Brush solution dark purple.

The calculation was made for an aqueous solution with 8% metallic honey and with a molar ratio of amine to Mejw equal to 2: 1.

SO4 11.13 is calculated for a total sulfur content of 3.71%, and the pI of the resulting solution for use as an aqueous herbicide for an algaecide can be brought up, for example, by adding a mineral acid.

In solid form.

You can extract KpHCTajufbi bis - (extnschalshchalia) - copper sulfate from a solution of ffllekca with copper in 100LN output by adding 95L alcohol in five times the volume. O1 crystals are filtered. The filtrate remains colorless and contains almost no copper. The product is cyuiar at 30 ° C under vacuum overnight.

PRI me R 3. Algicidal and gergtsidna efficiency.

The complex in the form of jwcTBOpa according to example 2 (in solution), whose p11 is increased to 10, is used in three reservoirs (each with an area of 8.1 ara and approximately 150 cm of depth). Reservoirs are affected by water weeds, including hawks and waterways (see table).

Likia)

56.8 Xyl1 l

563

56,8