Use of phosphoric esters as crystallization inhibitors
AssigneeBayer Aktiengesellschaft
InventorsKarl Reizlein, Klaus Wangermann, Wolfgang Wirth
Life of this patent
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Abstract
A new process for preventing the crystallization of certain azole derivatives in the spray equipment upon spraying mixtures containing A) certain azole derivatives which have a tendency to crystallize and B) if appropriate one or more other active compounds and additives, which process comprises adding at least one phosphoric ester of the formula ##STR1## in which R.sup.1 represents alkyl having 2 to 18 carbon atoms and R.sup.2 and R.sup.3 independently of one another represent alkyl having 2 to 12 carbon atoms, to the spray mixture before spraying.
Claims7
Process for preventing the crystallization of spray mixtures comprising
- A) at least one azole derivative of the formula ##STR35## in which a) R.sup.4 represents ##STR36## R.sup.5 represents tert-butyl and R.sup.6 represents hydroxyl, or b) R.sup.4 represents 4-fluorophenyl, R.sup.5 represents 2-fluorophenyl and R.sup.6 represents hydroxyl, or
- c) R.sup.4 represents 2,4-dichlorophenyl, R.sup.5 represents n-butyl and R.sup.6 represents hydroxyl, or
- d) R.sup.4 represents ##STR37## R.sup.5 represents phenyl and R.sup.6 represents cyano, or e) R.sup.4 represents 4-chlorophenyl, R.sup.5 represents ##STR38## and R.sup.6 represents hydroxyl, and/or at least one azole derivative of the formula ##STR39## in which a) Y represents --CH(OH) and R.sup.7 represents chlorine or phenyl, or
- b) Y represents CO and R.sup.7 represents chlorine, and/or
- at least one azole derivative of the formula ##STR40## in which R.sup.8 represents hydrogen or chlorine, and/or
- 1-([bis -(4-fluorophenyl)-methyl-silyl]-methyl)-1H-(1,2,4-triazole) of the formula ##STR41## and/or 1-[3-(2-chlorophenyl)-2-(4-fluorophenyl)-oxiran-2-yl-methyl]-1H-(1,2,4-tri azole) of the formula ##STR42## and B) if appropriate one or more other active compounds and additives,
- upon spraying said mixtures, which process is characterized in that at least one phosphoric ester of the formula ##STR43## in which R.sup.1 represents alkyl having 2 to 18 carbon atoms and
- R.sup.2 and R.sup.3 independently of one another represent alkyl having 2 to 12 carbon atoms, is added to the spray mixtures.
A composition comprising
- A) at least one azole derivative of the formula ##STR45## in which a) R.sup.4 represents ##STR46## R.sup.5 represents tert-butyl and R.sup.6 represents hydroxyl, or
- b) R.sup.4 represents 4-fluorophenyl, R.sup.5 represents 2-fluorophenyl and R.sup.6 represents hydroxyl, or
- c) R.sup.4 represents 2,4-dichlorophenyl, R.sup.5 represents n-butyl and R.sup.6 represents hydroxyl, or
- d) R.sup.4 represents ##STR47## R.sup.5 represents phenyl and R.sup.6 represents cyano, or e) R.sup.4 represents 4-chlorophenyl, R.sup.5 represents ##STR48## and R.sup.6 represents hydroxyl, or at least one azole derivative of the formula ##STR49## in which a) Y represents --CH(OH) and R.sup.7 represents chlorine or phenyl, or
- b) Y represents CO and R.sup.7 represents chlorine, or
- at least one azole derivative of the formula ##STR50## in which R.sup.8 represents hydrogen or chlorine, or 1-([bis-(4-fluorophenyl)-methyl-silyl]-methyl)-1H-(1,2,4-triazole) of the formula ##STR51## or 1-[3-(2-chlorophenyl)-2-(4-fluorophenyl)-oxiran-2-yl-methyl]-1H-(1,2,4-tri azole) of the formula ##STR52## and (B) at least one phosphoric ester of the formula ##STR53## in which R.sup.1 represents alkyl having 2 to 18 carbon atoms and
- R.sup.2 and R.sup.3 independently of one another represent alkyl having 2 to 12 carbon atoms,
- which composition does not crystallize when sprayed as an aqueous solution or emulsion.
Dependencies are inferred from the claim text.