Patent GB-774392-A (GB)
Title: Parasiticidal compositions
IPC: A01N25/30
Filed: 1954-03-01
Abstract: A parasiticidal composition comprises a parasiticide together with an oily polymer selected from homopolymers of butadiene and butadiene homologues, copolymers of butadiene and at least one of its homologues, copolymers of at least two butadiene homologues and copolymers of butadiene and/or one or more butadiene homologues with at least one monoethylenically unsaturated compound.  The polymer may be modified by reaction with 0.1-3 per cent of maleic anhydride, acrylonitrile or thioglycollic acid. An oily butadiene-styrene copolymer prepared using either sodium or a peroxide catalyst is preferred.  The parasiticide may be in the form of a finely-divided solid and may be a N-trichloromethylthioimide of a dicarboxylic acid or a related compound, as disclosed in Specification 666,636, [Group VI], and 716,533, [Group XXIX].  Other parasiticides which may be used include D.D.T., B.H.C., toxaphene, dieldrin, aldrin, parathion, T.E.P.P., nalathon, lead arsenate, calcium arsenate, cryolite and such fungicides, bactericides and germicides as the thiocarbonates, the imidazolines, chlorinated quinones, copper naphthenate, Bordeaux mixture, phenols, chlorinated phenols and quaternaries.  The compositions may be mixed with a carrier such as water or mineral oil, e.g. a naphtha fraction, or both together with a minor amount of a non-toxic oil-or water-soluble emulsifier, e.g. an alkali metal soap of a fatty acid.  The composition may be applied to materials undergoing parasiticidal deterioration either as such or so as to form the composition in situ, e.g. by applying the polymer, an emulsifier, and oil and/or water and, substantially simultaneously, the parasiticide.ALSO:A parasiticidal composition comprises a parasiticide together with an oily polymer selected from the group consisting of homopolymers of butadiene and butadine homologues, copolymers of butadiene and at least one of its homologues, copolymers of at least two butadiene homologues, and copolymers of butadine and/or one or more butadiene homologues with at least one monoethylenically unsaturated compound.  The polymer or copolymer may be modified by reaction with 0.1-3 per cent of maleic anhydride, acrylonitrile or thioglycollic acid.  An oily butadiene-styrene copolymer prepared using either sodium or a peroxide as catalyst is preferred.  The parasiticide may be in the form of a finely divided solid and may be a N-trichloromethylthio imide of a dicarboxylic acid or a related compound as disclosed in Specifications 716,533 [Group XXIX], and 666,636.  Other parasiticides which may be used include DDT, BHC, toxaphene, dieldrin, aldrin, parathion, TEPP, nalasthon, lead arsenate, calcium arsenate, cryolite, and such fungicides, bactericides and germicides as the thiocarbonates, the imidazolenes, chlorinated quinones, copper naphthenate, bordeaux mixtures, phenols, chlorinated phenols and quaternaries.  The composition may be mixed with a carrier such as water or mineral oil (e.g. a naphtha fraction) or both together with a minor amount of a non-toxic oil soluble or water-soluble emulsifier.  The compositions may be applied to materials undergoing parasiticidal deterioration either as such or so as to form the composition in situ, e.g. by applying the polymer, or emulsifier and oil and/or water and, substantially simultaneously, the parasiticide.