Patent GB-604212-A (GB)
Title: Manufacture of combinations of agents for combating vermin
IPC: A01N47/48
Filed: 1945-06-25
Abstract: Vermin-destroying compositions are produced by combining at least one synthetic contact insecticide of the formula <FORM:0604212/VI/1> with one or more organic phosphonium, sulphonium or ammonium compounds difficultly soluble or insoluble in water.  In the formula Ar1 and Ar2 mean aromatic radicles which may be substituted with the same or different non-salt-forming substitutes, e.g. chloro- or methyl groups, and V and W mean hydrogen or halogen atoms.  The structural formulae of several phosphonium &c. compounds are given the following being examples: triphenyl mono-and dichlorobenzyl phosphonium perchlorate, tribenzyl- and tritolyl sulphonium perchlorate, dipyridyl tolyl chlorobenzyl phosphonium chloride, dodecyl dichlorobenzyl dimethyl ammonium perchlorate.  In this connection Specifications 487,804, 500,386, 513,663, 536,881 and 543,685, [all in Group IV], are referred to.  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 tetrarydrofurfuryl alcohol or ethylene glycolmonoethyl- or monobutyl alcohol; (2) a moulded, fused mass, to be used as a soap, consists of two specified insecticides and the sodium salts of alkoyacetic acid with alkoxy residues of C7-C9 and oleic acid oleyl ester; (3) a mixture, for forming emulsions, consists of two specified insecticides and adimethyl-amino - dodecyltoluene - methosulphate or dimethyl-amino-acetic acid dodecylamide-chloromethylate or dimethyldodecylamino-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 tetrahydionaphthalene, adding dimethylamino-acetic aciddodecylamidochloromethylate, and then a solution in water of the condensation product of dicyandiamide, dicyandamide 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 formula given above, e.g. hexachlorocyclohexane, octachlorodiethyl ether, 4-chloro-benzoic acid allyl ester, dibenzlyether, 3:4 dichlorophenyl-trichloromethyl ketone.  The structural formulae of others are given.  This subject-matter does not appear in the Specification as accepted.