Dicamba (3,6-dichloro-2-methoxybenzoic acid) has
proven to be a highly beneficial herbicide. It is normally applied as the
dimethylamine salt. Unfortunately, this salt has a volatility that causes the
product, under certain conditions of application, to come into contact with
desirable plants, such as soybeans, that it can damage. This is caused by its
volatility.
It is therefore an object of the present invention to find a derivative of dicamba that will maintain or improve the beneficial properties of the product while lowering the volatility.
It is another object of the present invention to locate a compound that has the herbicidal properties of dicamba with enhanced solubility characteristics.
Other objects of the present invention will be seen from the ensuing description.
It has been found that the 2-(2"-aminoethoxy)ethanol salt of dicamba (3,6-dichloro-2-methoxybenzoic acid) decreases the volatility and improves other less advantageous properties of dicamba without detracting from its beneficial herbicidal properties.
Dicamba was described and patented in U.S. Pat. No. 3,013,054 issued Dec. 12, 1961. Since that time it has become a valuable herbicidal product, particularly in the control of weeds in corn. While it is safe to corn plants, it does not harm certain other beneficial crops, such as soybeans. Consequently, care must be taken so that it does not come into contact with such plants.
Dicamba is normally applied as the dimethylamine salt. Unfortunately, this salt is sufficiently volatile that the product applied to a corn crop can come into contact and injure adjacent crops, such as soybeans. This problem cannot be readily solved by the use of additives or other means except very careful application procedures under specified weather conditions. This is often very difficult to accomplish.
It has now been found that by using the previously unknown 2-(2"-aminoethyoxy)ethanol salt of
dicamba that the product has a sufficiently low volatility, so
as to prevent the product from volatilizing onto undesired valuable crops, and
improved solubility without any loss of herbicidal properties.
It is therefore an object of the present invention to find a derivative of dicamba that will maintain or improve the beneficial properties of the product while lowering the volatility.
It is another object of the present invention to locate a compound that has the herbicidal properties of dicamba with enhanced solubility characteristics.
Other objects of the present invention will be seen from the ensuing description.
It has been found that the 2-(2"-aminoethoxy)ethanol salt of dicamba (3,6-dichloro-2-methoxybenzoic acid) decreases the volatility and improves other less advantageous properties of dicamba without detracting from its beneficial herbicidal properties.
Dicamba was described and patented in U.S. Pat. No. 3,013,054 issued Dec. 12, 1961. Since that time it has become a valuable herbicidal product, particularly in the control of weeds in corn. While it is safe to corn plants, it does not harm certain other beneficial crops, such as soybeans. Consequently, care must be taken so that it does not come into contact with such plants.
Dicamba is normally applied as the dimethylamine salt. Unfortunately, this salt is sufficiently volatile that the product applied to a corn crop can come into contact and injure adjacent crops, such as soybeans. This problem cannot be readily solved by the use of additives or other means except very careful application procedures under specified weather conditions. This is often very difficult to accomplish.
It has now been found that by using the previously unknown 2-(2"-aminoethyoxy)ethanol salt of
dicamba that the product has a sufficiently low volatility, so
as to prevent the product from volatilizing onto undesired valuable crops, and
improved solubility without any loss of herbicidal properties. 
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