Patent GB-937762-A (GB)
Title: Insecticidal compositions
IPC: C07F9/6512
Filed: 1960-03-23
Abstract: An insecticidal concentrate comprises (a) an insecticidal thiophosphate or thiophosphonate ester, (b) a compound having the general formula R-X-R1 in which X is an oxygen or sulphur atom, R is an alkyl group having at least 4 carbon atoms, a cycloalkyl group having 4 to 8 carbon atoms or an etherified alkylol group having a total of 4 to 18 carbon plus oxygen atoms, R1 is a hydrogen atom, an alkyl group, a cycloalkyl group having 4 to 8 carbon atoms or an etherified alkylol group having 4 to 18 carbon atoms, and (c) an ester of an acid of sulphur having the general formula R2-Y-R3 in which Y is a sulphite, sulphate or a sulphonate group, R2 is a hydrogen atom, an alkyl group having up to 18 carbon atoms or a monocyclic aryl or alkaryl group having up to 16 carbon atoms in the alkyl group and R3 is an alkyl group having up to 16 carbon atoms. Specified phosphate esters are O,O-diethyl-O-[2-(ethylthio)-ethyl] thiophosphate, O-ethyl-O-paranitrophenyl phenyl thiophosphonate, S-[1,2 - bis(carbethoxy)ethyl] O,O - dimethyl dithiophosphate, methyl parathion, parathion, O - (3 - chloro - 4 - nitrophenyl) O,O - dimethyl thiophosphate, O,O - diethyl O - (2 - isopropyl - 4-methyl pyrimidyl - 6) thiophosphate, O - (2 - chloro - 4 - nitrophenyl) O,O - dimethyl thiophosphate or O,O - dimethyl S - (4 - oxo - 1,2,3 - benzotriazinyl - 3) - methyl dithiophosphate.  Specified compounds of formula R-X-R1 are iso-octyl, dodecyl, tetradecyl, octadecyl, pentyl, lauryl, isodecyl or mixed straight chain alcohols of 8 to 18 carbon atoms, decyl, hexadecyl or tertiary dodecyl mercaptan, di-isodecyl, dodecyl-n-butyl, methyl-n-octyl, dihexadecyl, dicyclohexyl or didecyl ether, dimethyl ether of triethylene glycol, tertiarybutyl alcohol condensed with ethylene oxide, ditetradecyl sulphide, b -methoxy ethanol, octadecylbutyl sulphide, cyclohexanol or cyclopentanol. Specified sulphur acid esters are dimethyl, n-octyl methyl, di-isobutyl, octadecylethyl, tetradecyl n-butyl, di-iso nonyl, paradecyl phenyl butyl, didecyl or diethyl sulphate, diethyl, dodecyl hydrogen, di-isodecyl, or tetradecyl hydrogen sulphite, isodecyl acid sulphate, decyl acid sulphate or methyl para-toluene, octyl benzene, or ethyldocecyl benzene sulphonate.  Dusts may be prepared by using solid carriers such as natural clays, china clays, bentonites, attapulgites, talc, pyrophyllite, quartz, diatomaceous earth, fuller's earth, chalk, rock phosphate or sulphur or chemically-modified minerals.  Solutions may be prepared in hydrocarbon solvents such as xylene, benzene, toluene, cyclohexane, n-hexane or pentanes.  Wettable powders are prepared using surface-active agents, e.g. tetramethyl ammonium chloride, octadecyl amine hydrochloride, phosphonium or sulphonium salts, ethylene oxide or propylene oxide condensates with fatty alcohols or alkyl phenols, glycerol monostearate, propylene glycol mono-oleate, common soaps or sulphated oils, e.g. the sulphate ester of ricinoleic acid, sodium salt of polyoxyethylene sulphate or alkyl polyoxyethylene sulphate, sodium salt of isothionic acid and sulphonates of alkyl aromatic hydrocarbons, e.g. sulphonated tetradecyl benzene.