Phenyl salicylate and benzyl salicylate as acaricidal agents

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Ortho-hydroxybenzoic acid or derivative doai

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A01N 3736

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active

048001961

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BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to new acaricides and mite proof materials.


BACKGROUND ART

There are certainly some kinds of mites in a house dust of general houses and in recent years, frequent breeding of mites has been observed according to change of houses and life style. Hitherto, there have been known some kinds of acaricides for mites in a house dust, for example, phosphorated compounds such as phenitrothione, phenthione, DDVP and diazinon, carbamated compounds such as propoxer and NAC and the pyrethroided compounds such as dl,d-T80-resmethrin.
These known acaricides, which are used by being supported in a tatami, a carpet or an insect control paper or scattered or sprayed as they are, have such problems as the following: the acaricides of phosphorated compounds have high toxicity, bad smell and low effect on Epidermoptidae, those of carbamated compounds also have high toxicity and low effect on Epidermoptidae, those of pyrethroided compounds are expensive and have low effect on Tyrophagus putrescentiae, and it is difficult to use the above acaricides in combination with one another.


DISCLOSURE OF THE INVENTION

As a result of various studies for providing an inexpensive acaricide having low toxicity and wide range of prevention of mites in a house dust, the following compounds are found to satisfy the above conditions: phenyl salicylate, diphenylamine, methyl .beta.-naphthyl ketone, coumarin, phenetyl benzoate, benzyl salicylate, N-fluorodichloromethyl-thio-cyclohexene-dicarboxyimide, p-nitrobenzoic acid methyl ester, p-chlorometaxylenol, .alpha.-bromocinnamic aldehyde, 2,5-dichloro-4-bromophenol, N,N-dimethyl-N'-tryl-N'-(fluorodichloromethylthio)-sulfamide, 2-phenyl-phenol, sodium 2-phenyl-phenolate, 5-chloro-2-methyl-4-isothiazoline-3-one, 2-methyl-4-isothioazoline-3-one and benzimidazolyl methyl-carbamate.
Thus, the present invention relates to acaricides characterized by containing at least one member selected from N-fluorodichloromethyl-thio-cyclohexene-dicarboximide, p-nitrobenzoic acid methyl ester, p-chlorometaxylenol, .alpha.-bromocinnamic aldehyde, phenyl salicylate, phenyl benzoate, diphenylamine, methyl .beta.-naphthyl ketone, coumarin, phenethyl benzoate, benzyl salicylate, 2,5-dichloro-4-bromophenol, N,N-dimethyl-N'-tryl-N'-(fluorodichloromethylthio)-sulfamide, 2-phenylphenol, sodium 2-phenyl-phenolate, 5-chloro-2-methyl-4-isothiazoline-3-one, 2-methyl-4-isothiazoline-3-one and benzimidazolyl methyl-carbamate as an active ingredient and mite proof materials characterized by supporting these acaricides in substrates.


BEST MODE FOR CARRYING OUT THE INVENTION

The acaricides of the present invention have superior effects on prevention of mites by containing at least one member selected from N-fluorodichloromethylthio-cyclohexene-dicarboximide (NFC), p-nitrobenzoic acid methyl ester (NBA), p-chlorometaxylenol (PCMX), .alpha.-bromocinnamic aldehyde (BCA), phenyl salicylate (PS), phenyl benzoate (PB'), diphenylamine (DA), methyl .beta.-naphthyl ketone (MNK), coumarin (CM), benzyl salicylate (BS), phenetyl benzoate (PB), 2,5-dichloro-4-bromophenol (CBP), N,N-dimethyl-N'-tryl-N'-(fluorodichloromethylthio)-sulfamide (TFS), 2-phenyl-phenol (OPP), sodium 2-phenyl-phenolate (SPP), 5-chloro-2-methyl-4-isothiazoline-3-one (CIO), 2-methyl-4-isothiazoline-3-one (MIO) and benzimidazolyl methyl-carbamate (BIC).
The acaricides can be applicable to any kind of mites existing in a house. Further, particular examples of the mites to which the acaricides are applicable are Epidermoptidae such as Dermatophagoides farinae and Dermatophagoides pteronyssinus, Acaridae such as Tryophagus putrescentiae and Aleuroglyphus ovatus, Glycyphagidae such as Glycyphagus privatus and Glycyphagus domesticus, Tarsonemidae, Cheyletidae such as Cheyletus malaccensis and Cheyletus fortis and animal paracitic mites such as Ornithonyssus bacoti and Ornithonyssus sylviarum.
When the acaricides of the present invention are employed, the compositions containing the above-mentioned active ingredients can be used

REFERENCES:
patent: 1953629 (1934-04-01), Pfaff et al.
patent: 1963955 (1934-06-01), Cleveland
patent: 1974689 (1934-09-01), Pfaff et al.
patent: 2480084 (1949-08-01), Mayer
patent: 3091511 (1963-05-01), Calhoun
patent: 4666940 (1987-05-01), Bischoff et al.
English Translation of Japanese Pat. No. 45-38354, 12/4/70; 4 pages.
Chemical Patents Index, Basic Abstracts Journal, Section C, Week 24, 1986, Ref. No. 153387.
Chemical Abstracts, vol. 86, No. 13, Ref. No. 84706W.
Patent Journal, Wed. 20 Sep. 1967; 2A, A 67/2464.
Chemical Abstracts, vol. 90, No. 22, Abstr. No. 174071x.
Chemical Abstracts, vol. 73, No. 13, Abstr. No. 65437z.

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