Copper based pesticides
The effect of aqueous compositions of copper based fungicides is improved by including a mixture of sodium dioctyl sulfosuccinate and sodium lauryl sulphate surfactants in the aqueous composition which does not require the presence of a bicarbonate.
1 . A pesticide spray composition comprising an aqueous composition containing:
i. 0.010 wt % to 3 wt % of copper metal derived from a copper salt, wherein the copper metal derived from the copper salt is selected from copper sulfate, copper hydroxide, cuprous oxide, copper oxychloride, copper ammonium carbonate, and copper octanoate; and
ii. 0.0025 wt % to 10 wt % of a mixture of sodium dioctyl sulfosuccinate and sodium lauryl sulphate, wherein the mixture is a surfactant mixture;
wherein the pesticide spray composition is free of bicarbonate salts.
2 . The pesticide spray composition according to claim 1 , in which the ratio of sodium dioctyl sulfosuccinate and sodium lauryl sulphate is from 2:1 to 1:2 parts by weight.
3 . The pesticide spray composition according to claim 1 containing from 0.001 wt % to 6 wt % of the surfactant mixture.
4 . The pesticide spray composition according to claim 3 , containing from 0.01 to 1 wt % of the surfactant mixture.
5 . The pesticide spray composition according to claim 4 , containing from 0.02 to 0.4 wt % of the surfactant mixture.
6 . The pesticide spray composition according to claim 1 , wherein the sodium lauryl sulfate present in the aqueous composition is equal to an amount of sodium dioctyl sulfosuccinate; the amount being by weight.
7 . The pesticide spray composition according to claim 1 , wherein the aqueous composition contains 0.015 wt % to 3 wt % of the copper metal derived from the copper salt.
8 . The pesticide spray composition according to claim 1 , wherein the composition is free of potassium and sodium bicarbonate.
9 . The pesticide spray composition according to claim 1 , wherein the sodium lauryl sulfate present in the aqueous composition is less than an amount of sodium dioctyl sulfosuccinate; the amount being by weight.
10 . The pesticide spray composition according to claim 1 , wherein the sodium lauryl sulfate present in the aqueous composition is greater than an amount of sodium dioctyl sulfosuccinate; the amount being by weight.
11 . A pesticide formulation for mixing with water comprising:
i. from 5 wt % to 30 wt % of copper metal derived from a copper salt, wherein the copper metal derived from the copper salt in the formulation is selected from copper sulfate, copper hydroxide cuprous oxide, copper oxychloride, copper ammonium carbonate, and copper octanoate;
ii. from 3 wt % to 40 wt % sodium dioctyl sulfosuccinate; and
iii. from 3 wt % to 40 wt % sodium lauryl sulfate.
12 . A pesticide spray composition obtained by mixing the pesticide formulation according to claim 11 with water to produce a preparation that contains from 0.015% to 3% copper metal derived from a copper salt together with a surfactant mixture of the sodium dioctyl sulfosuccinate and the sodium lauryl sulfate diluted respectively by the same amounts.
13 . The pesticide spray composition according to claim 12 , wherein the preparation contains from 0.05% to 0.3% copper metal derived from the copper salt.
14 . The pesticide spray composition according to claim 12 , wherein the preparation contains from 0.25% to 1.5% copper metal derived from the copper salt.