Patent GB-602479-A (GB)
Title: Manufacture of combinations of agents for combating vermin
IPC: A01N29/10
Filed: 1945-06-19
Abstract: Vermin-destroying compositions are produced by combining at least one synthetic contact insecticide of the formula <FORM:0602479/VI/1> with one or more compounds of the formula <FORM:0602479/VI/2> In these formulae: -Ar1 and Ar2 mean aromatic radicles which may be substituted with the same or different non-saltforming substituents, e.g. choro- or methyl groups; V and W mean halogen or hydrogen atoms; R1 means one or more halogen atoms, of which one must be in p-position; R, means halogen atoms, alkyl, alkoxy and/or nitro groups, (examples being chloro, bromo, methyl, and methoxy), and n means the numerals 0, 1 or 2.  The preparations may be used as such, or in solvents, as emulsions, on carrier substances, or with other active substances (e.g. fungicides) or adhesive or wetting agents. In examples, (1) a stock solution, yielding an emulsion with water, consists of two specified insecticides in admixture with 6-methylol-tetrahydronaphthalene-1 : 2 : 3 : 4, the sodium salt of alkoxy-acetic acid with alkoxy residues of C4-C9, and tetrahydrofurfuryl alcohol or ethylene glycol-monoethyl- or monobutyl ether; (2) a moulded fused mass, to be used as a soap, consists of two specified insecticides and the sodium salts of alkoxy acetic acid with alkoxy residues C7-C9 and oleic acid oleyl ester; (3) a mixture, for forming emulsions, consists of two specified insecticides, and d -undecyl-4 methylbenzyl-trimethyl ammonium methosulphate, or dimethylamino-acetic acid-dodecylamide-chloromethylate or dimethyldodecyl-amine chlorobenzylate; (4) a dusting agent consists of calcium carbonate and talcum saturated with an acetone or chloroform solution of two specified insecticides, to which after removal of the solvent, slaked lime and a fatty acid are added; (5) a stock emulsion is produced by dissolving two specified insecticides in tetrahydronaphthalene adding dimethylaminoacetic-acid-dodecylamide-chloromethylate, and then a solution in water of the condensation product of dicyandiamide, dicyandiamidine hydrochloride and formaldehyde.  Calcium carbonate may be precipitated in the emulsion, taking up the emulsified active substances; the precipitate is dried in vacuo at 30 DEG  C. yielding an insecticidal powder; (6) a mixture of chalk, limestone and bentonite is saturated with an acetone or chloroform solution of two specified insecticides, and the solvent distilled off.  Casein and sodium carbonate are added to provide a spraying agent.  The Specification as open to inspection under Sect. 91 comprises also the use of other contact insecticides in place of those of the first mentioned formula, e.g. pipethrine, rotenone, vulpinic acid, pulvinic acid, higher molecular amines such as diphenyl amine, dioctyl amine, hexylheptyl amine, 2 : 4-dinitro-6-methylphenol, 2 : 4 dinitro-6-cyclo-hexylphenol, 2 : 4 dinitrophenal, b -butoxy-b 1-thio-cyano-di-ethyl ether, hexachlorocyclohexane, octachlorodiethyl ether, 4-chlorobenzoic acid alkyl ether, dibenzyl ether, 3 : 4 dichlorophenyl-trichloromethyl ketone.  The structural formul  of others are given.  This subject-matter does not appear in the Specification as accepted.