JP4180686B2 - Pest repellent composition - Google Patents

Pest repellent composition Download PDF

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Publication number
JP4180686B2
JP4180686B2 JP10688598A JP10688598A JP4180686B2 JP 4180686 B2 JP4180686 B2 JP 4180686B2 JP 10688598 A JP10688598 A JP 10688598A JP 10688598 A JP10688598 A JP 10688598A JP 4180686 B2 JP4180686 B2 JP 4180686B2
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Japan
Prior art keywords
pest repellent
phase
repellent composition
diol
emulsion
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JP10688598A
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Japanese (ja)
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JPH11263701A (en
Inventor
雅文 井上
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Dainihon Jochugiku Co Ltd
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Dainihon Jochugiku Co Ltd
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Description

【0001】
【産業上の利用分野】
本発明は害虫忌避組成物に関し、さらに詳しくはその持続性と使用感を改善したクリームおよび乳液状害虫忌避組成物に係る。
【0002】
【従来の技術】
害虫忌避剤にはエアゾール、ローション、クリーム、乳液等の剤型があり、皮膚表面に塗布して使用されている。上記の剤型の中でエアゾールタイプは手を汚さずに容易に広い範囲に薬剤を塗布することができる点が優れている。
【0003】
しかしながら、エアゾールタイプでは薬剤を噴射するために、薬剤が眼や粘膜等の過敏な部位に入ると炎症を起こしたり、また、呼吸により吸引され呼吸器障害の原因となる恐れがあり、乳幼児への適用には問題があった。さらに、塗布する必要のない部分にまで飛散するなど薬剤の塗布範囲を制御するのが難しく、衣類を汚染する等の問題点があった。
【0004】
またエアゾールタイプでは広い面積に対して均一な散布が事実上困難であり、散布により付着する薬剤量に過多な部分が生じ、その部分はべたつきが生じることとなる。また散布の過程において、噴霧液すべてが皮膚に付着するわけでなく、かなりの量が散逸してしまうことから忌避薬剤の利用効率も悪くなる。
【0005】
これに対して薬剤の分散液をクリーム、乳液状にして塗布する用法においては、薬剤の吸入の心配が無く、顔や粘膜付近にも容易に塗布可能であるという利点がある。しかし、クリーム、乳液の場合、乳化剤や油性成分の影響により塗布に伴うべたつき感が一層顕著となる場合が多かった。また従来のクリーム、乳液の製造に当たっては、特別の撹拌装置を要したり、温度や撹拌の回転数など乳化条件の設定が必ずしも簡便でなかった。
【0006】
【発明が解決しようとする課題】
最近のアウトドアの流行により、蚊、ハチ、アブ、ブユ、ダニ、ノミ、ナンキンムシ、ムカデ、ゲジゲジ等による被害が増加しており、特に野外にてツツガムシ病、ライム病などの刺咬害虫による問題も深刻化している。このため、本発明は乳幼児にも安全に使用できて、従来の害虫忌避組成物よりも塗布面上でべとつきを伴うことなく、かつ害虫忌避効果の持続性をさらに向上させ得るクリームおよび乳液状害虫忌避組成物を提供することにある。
【0007】
【課題を解決するための手段】
本発明者は前記の課題を解決すべく検討を重ねた結果、乳化剤としてアクリル酸・メタクリル酸アルキル共重合体を配合するとともに、害虫忌避成分とある種の皮膚保護剤を配合することにより、簡便に忌避効果の持続性と使用感の優れたクリームおよび乳液状害虫忌避組成物が製造できることを見出し、本発明を達成するにいたった。
【0008】
本発明においては、従来の界面活性剤の代わりにアクリル酸・メタクリル酸アルキル共重合体を用いて害虫忌避成分および油性物質を乳化し、耐水性の皮膚保護剤を併用することにより上記の課題を解決することができた。すなわち、本発明に係る害虫忌避組成物は(I)害虫忌避成分、(II)乳化剤としてアクリル酸・メタクリル酸アルキル共重合体、(III)皮膚保護剤としてメチルポリシロキサンおよびメチルフェニルポリシロキサンから選ばれた少なくとも1種を配合して成る。
【0009】
(I)の害虫忌避成分としては、害虫に対して忌避作用あるいは吸血阻害作用を有する合成あるいは天然の各種の化合物が挙げられる。たとえばN,N−ジエチル−m−トルアミド(以下DEETと略す)、ユーカリプトール、α−ピネン、ゲラニオール、シトロネラール、カンファー、リナロール、p−メンタン−1,2−ジオール、p−メンタン−3,8−ジオール、カラン−3,4−ジオール、ピナン−2,3−ジオール、テルペノール、フタル酸ジオクチル、フタル酸ジブチル、2−エチル−1,3−ヘキサジオール、ブチル−3,4−ジヒドロ−2,2−ジメチル−4−オキソ−2H−ピラン−6−カルボキシレート、n−ヘキシルトリエチレングリコールモノエーテル、メチル−6−n−ペンチル−シクロヘキセン−1−カルボキシレート、ジメチルフタレート、シトロネロール、ナフタレン、シトロネール酸、2−エチル−2−ブチル−1,3−プロパンジオール、ビス−テトラヒドロフルフラール、ジ−m−プロピルイソシンコメロネート、2−(4−エドキシフェニル)−2−メチルプロピル−3−フェノキシベンジルエーテル、1−エチニル−2−メチル−2−ペンテニル−2,2,3,3−テトラメチルシクロプロパンカルボキシレート、1−エチニル−2−メチル−2−ペンテニル−2,2−ジメチル−a−(2’−メチル−1’−プロペニル)シクロプロパンカルボキシレートなどが例示できる。
【0010】
さらに天然物としては、桂皮、樟脳、シトロネラ、レモングラス、クローバ、タチジャコウソウ、ゼラニウム、ベルガモット、月桂樹、松、アカモモ、ペニーロイアル、ユーカリおよびインドセンダンなどから取れる精油、抽出液などが例示でき、これらの1種または2種以上を選択して用いることができる。上記化合物および天然物中において、特にDEETが好ましい。
【0011】
(II)のアクリル酸・メタクリル酸アルキル共重合体は、アクリル酸とメタクリル酸アルキルの共重合体であり、カルボキシル基に起因する親水性部分と、アルキル基に起因する親油性部分を併せ持ち、良好な乳化性を有する。該物質はビー・エフ・グッドリッチ社から「ペミュレン」の商品名で市販されており公知のものであるが、害虫忌避組成物に本物質を配合した例はなく、後に述べる皮膚保護剤との併用により害虫忌避効果の持続性と使用感が高まるという効果は今まで知られていない。
【0012】
アクリル酸・メタクリル酸アルキル共重合体の配合量は害虫忌避組成物中0.01から10重量%、好ましくは0.05から5重量%である。0.01重量%未満では乳化しにくく、一方10重量%を越えて配合しても乳化作用および乳化安定性の向上の効果は期待できない。本発明の害虫忌避組成物の性状は、添加する成分にもよるが、アクリル酸・メタクリル酸アルキル共重合体の配合量が高くなるに従いクリーム状となり、配合率が低くなるに従い乳液状となる。
【0013】
なお、アクリル酸・メタクリル酸アルキル共重合体はアルキル変性のカルボキシルビニルポリマーであるが、増粘剤として通常用いられているカルボキシルビニルポリマー(たとえばビー・エフ・グッドリッチ社のカーボポール941、和光純薬社のハイビスワコー105)では油分を安定に乳化することができない。
【0014】
(III)の皮膚保護剤としてはメチルポリシロキサン、メチルフェニルポリシロキサンが用いられる。使用できるものとしては、25℃で2から100センチストークス(cSt=mm−1)の動粘度を有するシリコーンオイルが好ましく、これらの1種又は2種を混合して用いることができる。動粘度が2センチストークス未満のメチルポリシロキサンでは揮発性を有するため皮膚保護剤としての効果が弱く、一方、動粘度が100センチストークスを越えるメチルポリシロキサンやメチルフェニルポリシロキサンではべたつきが生じ使用感が悪くなる傾向がある。
【0015】
該物質の含量は、害虫忌避成分100重量部に対して10から200重量部、好ましくは20から100重量部である。
【0016】
さらに本発明では必要に応じて、その他の成分として保湿剤、香料、潤滑剤、色素、紫外線吸収剤、紫外線遮断剤、抗菌剤、清涼剤、制汗剤、増粘剤などを含有させることができる。
【0017】
本発明の害虫忌避組成物を製造するには、アクリル酸・メタクリル最アルキル共重合体に害虫忌避成分と皮膚保護剤等を添加、撹拌するだけでよい。撹拌条件は添加する油性成分の種類や量にもよるが、多くの液状成分については、室温において800から1500rpm程度の回転数での撹拌で乳化可能であり、従来のような高温での調製、高回転数による激しい撹拌は不要で簡便性が向上している。
【0018】
【実施例】
以下に実施例をもって本発明をさらに詳細に説明する。但し、本発明は決してこれらに限定されるものではない。配合量は重量%である。
【0019】
実施例に先だって、害虫忌避効果とその持続性、適用皮膚面上の使用感および乳化安定性に関する評価法を以下に示す。
【0020】
試験例及び評価方法
(1)忌避効果の測定
各サンプルを人の腕に塗布し、実際に蚊を用いて、各時間経過後の忌避効果を測定し、効果の強さと持続時間を以下の方法で評価した。
【0021】
(試験方法)健康な成人男性5人を1群とし、各試料にそれぞれ1群を当てた。各群の被験者の前腕部12cm×5cmにDEEΥの塗布量が250μg/cmとなるように均一に塗布し、吸血能力を有するヒトスジシマカ(雌)100匹を予め放った金網ケージ(30×30×30cm)内に3分間露出させ、蚊が吸血を開始するかどうかを観察した。最終的に塗布8時間後における吸血の跡の数を数え、次式より忌避率を算出した。
【0022】
忌避率=〔(X−Y)/X〕×100(%)
X:無処理区の吸血の跡の数
Y:処理区の吸血の跡の数
【0023】
(2)使用感の評価
専門研究員が実際に腕に塗ることにより、べたつき感の有無を評価した。評価結果は皮膚に対するべたつきについて「◎:べたつかず良好」、「○:べたつかない」、「△:ややべたつく」、「×:べたつく」の4段階で行った。
【0024】
(3)乳化安定性の評価
各試料を50℃の恒温室内で保管し、1カ月後に各試料の状態を調べた。評価は「○:油の分離が認められない」、「△:油の分離がわずかに認められる」、「×:油の分離が明確に認められる」の3段階で行った。
【0025】
さらに、以上の項目の試験結果をまとめた総合判定を4段階の評価でまとめた。
【0026】
実施例1、比較例1
(実施例1製法)A,B,Cの各相を常温で溶解する。B相を通常撹拌しながらC相およびA相を順次加え、均一乳液状とし、放置脱泡後、容器に充填する。
(比較例1製法)A,Bの各相を70から80℃で均一に溶解する。B相をA相に加え、80℃を維持しながらホモミキサー(5000rpm)で5分間攪拌する。その後通常撹拌し35℃で撹拌を止めて放置、脱泡後、容器に充填する。
【0027】
【表1】

Figure 0004180686
【0028】
表1の実施例1の結果から、本発明に係るクリームおよび乳液状害虫忌避組成物は、忌避効果の持続性が高く、塗布面上でのべとつきが少なく、乳化安定性に優れた効果を示した。同様の結果は害虫忌避成分がp−メンタン−1,2−ジオール、p−メンタン−3,8−ジオール、カラン−3,4−ジオール、ピナン−2,3−ジオールの場合でも得られた。これに対して乳化剤として従来の界面活性剤を用いた場合である比較例1では実施例1に比べ調製に時間がかかり、また得られた製剤は塗布面上でべたつきがみられその使用感は好ましいものではなかった。
【0029】
実施例2から6
(製法)A,B,Cの各相を常温で溶解する。B相を撹拌しながらC相およびA相を順次加え、均一乳液状とし、放置脱泡後、容器に充填する。
【0030】
【表2】
Figure 0004180686
【0031】
実施例7から8、比較例2から4
(製法)A,B,Cの各相を常温で溶解する。B相を撹拌しながらC相およびA相を順次加え、均一乳液状とし、放置脱泡後、容器に充填する。
【0032】
【表3】
Figure 0004180686
【0033】
比較例5から7
(製法)A,B,Cの各相を常温で溶解する。B相を撹拌しながらC相およびA相を順次加え、均一乳液状とし、放置脱泡後、容器に充愼する。
【0034】
【表4】
Figure 0004180686
【0035】
表2から4の結果から、本発明に係るクリームおよび乳液状害虫忌避組成物は忌避効果の持続性が高く、塗布面上でのべとつきが少なく、乳化安定性に優れた効果を示した。同様の結果は害虫忌避成分がp−メンタン−1,2−ジオール、p−メンタン−3,8−ジオール、カラン−3,4−ジオール、ピナン−2,3−ジオールの場合でも得られた。これに対し、メチルポリシロキサン、メチルフェニルポリシロキサンを添加しなかった場合、およびそれ以外のシリコーンオイルを配合した比較例2から5では、塗布面上でべたつきがみられその使用感は好ましいものではなかった。またカルボキシルビニルポリマー(カーボポール941)を用いた比較例6では保存中に乳化が崩れ、安定性に問題があり、DEETを配合しなかった比較例7では全く忌避効果を示さなかった。
【0036】
【発明の効果】
本発明により忌避効果の持続性が高く、さらにべとつかないことより使用感の良いクリームおよび乳液状害虫忌避組成物の簡便な提供が可能となった。[0001]
[Industrial application fields]
The present invention relates to a pest repellent composition, and more particularly, to a cream and emulsion pest repellent composition having improved durability and feeling of use.
[0002]
[Prior art]
Pest repellents are in the form of aerosols, lotions, creams, emulsions, etc., and are applied to the skin surface. Among the above-mentioned dosage forms, the aerosol type is excellent in that the medicine can be easily applied to a wide range without getting hands dirty.
[0003]
However, in the aerosol type, since the medicine is injected, if the medicine enters sensitive areas such as eyes and mucous membranes, it may cause inflammation, or it may be aspirated by breathing and cause respiratory problems. There was a problem with the application. Furthermore, it is difficult to control the application range of the medicine, such as scattering to a part that does not need to be applied, and there is a problem that the clothes are contaminated.
[0004]
In addition, in the aerosol type, uniform spraying over a large area is practically difficult, and an excessive amount of chemicals adheres due to spraying, and that part becomes sticky. Also, in the process of spraying, not all of the spray liquid adheres to the skin, and since a considerable amount is dissipated, the utilization efficiency of the repellent drug is also deteriorated.
[0005]
On the other hand, the method of applying the dispersion of the drug in the form of cream or emulsion has the advantage that it can be easily applied to the face and the vicinity of the mucous membrane without worrying about inhalation of the drug. However, in the case of creams and emulsions, the stickiness associated with application is often more pronounced due to the influence of emulsifiers and oil components. Further, in the production of conventional creams and emulsions, special stirring devices are required, and setting of emulsification conditions such as temperature and the number of rotations of stirring is not always simple.
[0006]
[Problems to be solved by the invention]
Due to the recent outdoor epidemic, damage caused by mosquitoes, bees, abs, buoys, ticks, fleas, bedbugs, centipedes, gegegeji, etc. is increasing, especially in the field due to biting insects such as Tsutsugamushi disease and Lyme disease It is getting serious. For this reason, the present invention can be safely used for infants, creams and milky insect pests that can be used more safely than conventional pest repellent compositions without causing stickiness on the coated surface and can further improve the sustainability of the pest repellent effect. It is to provide a repellent composition.
[0007]
[Means for Solving the Problems]
As a result of repeated studies to solve the above-mentioned problems, the present inventor can easily combine an acrylic acid / alkyl methacrylate copolymer as an emulsifier and a pest repellent component and a certain skin protective agent. The present inventors have found that a cream and milky insect pest repellent composition having excellent repellent effect and usability can be produced.
[0008]
In the present invention, the above-mentioned problems are solved by emulsifying the insect repellent component and the oily substance using an acrylic acid / alkyl methacrylate copolymer instead of the conventional surfactant, and using a water-resistant skin protective agent in combination. I was able to solve it. That is, the pest repellent composition according to the present invention is selected from (I) a pest repellent component, (II) an acrylic acid / alkyl methacrylate copolymer as an emulsifier, and (III) a methylpolysiloxane and methylphenylpolysiloxane as a skin protectant. And blending at least one of the above.
[0009]
Examples of the pest repellent component (I) include various synthetic or natural compounds having a repellent action or blood sucking inhibitory action against pests. For example, N, N-diethyl-m-toluamide (hereinafter abbreviated as DEET), eucalyptol, α-pinene, geraniol, citronellal, camphor, linalool, p-menthane-1,2-diol, p-menthane-3,8 -Diol, caran-3,4-diol, pinane-2,3-diol, terpenol, dioctyl phthalate, dibutyl phthalate, 2-ethyl-1,3-hexadiol, butyl-3,4-dihydro-2, 2-dimethyl-4-oxo-2H-pyran-6-carboxylate, n-hexyltriethylene glycol monoether, methyl-6-n-pentyl-cyclohexene-1-carboxylate, dimethyl phthalate, citronellol, naphthalene, citronellic acid 2-ethyl-2-butyl-1,3-propanedioe Bis-tetrahydrofurfural, di-m-propylisocincomeronate, 2- (4-edoxyphenyl) -2-methylpropyl-3-phenoxybenzyl ether, 1-ethynyl-2-methyl-2-pentenyl-2 , 2,3,3-tetramethylcyclopropanecarboxylate, 1-ethynyl-2-methyl-2-pentenyl-2,2-dimethyl-a- (2′-methyl-1′-propenyl) cyclopropanecarboxylate, etc. Can be illustrated.
[0010]
Furthermore, examples of natural products include essential oils and extracts from cinnamon bark, camphor, citronella, lemongrass, clover, ginger, geranium, bergamot, laurel, pine, red peach, penny royal, eucalyptus and neem. One or more of these can be selected and used. Of these compounds and natural products, DEET is particularly preferred.
[0011]
The acrylic acid / alkyl methacrylate copolymer of (II) is a copolymer of acrylic acid and alkyl methacrylate, and has both a hydrophilic part attributed to the carboxyl group and a lipophilic part attributed to the alkyl group. Have good emulsifying properties. This substance is commercially available from BF Goodrich under the trade name “Pemulen”, but there is no example of blending this substance in a pest repellent composition. The effect that the combined use increases the sustainability of the pest repellent effect and the feeling of use has not been known so far.
[0012]
The blending amount of the acrylic acid / alkyl methacrylate copolymer is 0.01 to 10% by weight, preferably 0.05 to 5% by weight in the pest repellent composition. If it is less than 0.01% by weight, it is difficult to emulsify. On the other hand, even if it exceeds 10% by weight, the effect of improving the emulsifying action and emulsion stability cannot be expected. Although the property of the pest repellent composition of the present invention depends on the components to be added, it becomes creamy as the blending amount of acrylic acid / alkyl methacrylate copolymer increases, and becomes emulsion as the blending rate decreases.
[0013]
Although the acrylic acid / alkyl methacrylate copolymer is an alkyl-modified carboxyl vinyl polymer, a carboxyl vinyl polymer usually used as a thickener (for example, Carbopol 941, BF Goodrich, Wako Pure). Hibiswa Co. 105) cannot stably emulsify oil.
[0014]
Methylpolysiloxane and methylphenylpolysiloxane are used as the skin protecting agent of (III). As a material that can be used, a silicone oil having a kinematic viscosity of 2 to 100 centistokes (cSt = mm 2 s −1 ) at 25 ° C. is preferable, and one or two of these can be mixed and used. Methyl polysiloxanes with a kinematic viscosity of less than 2 centistokes are less effective as skin protectants due to their volatility, while methylpolysiloxanes and methylphenylpolysiloxanes with a kinematic viscosity of over 100 centistokes are sticky and feel Tend to get worse.
[0015]
The content of the substance is 10 to 200 parts by weight, preferably 20 to 100 parts by weight, based on 100 parts by weight of the pest repellent component.
[0016]
Furthermore, in the present invention, a moisturizer, a fragrance, a lubricant, a pigment, a UV absorber, an UV blocker, an antibacterial agent, a cooling agent, an antiperspirant, a thickener, and the like may be added as other components as necessary. it can.
[0017]
In order to produce the pest repellent composition of the present invention, it is only necessary to add a pest repellent component, a skin protective agent and the like to the acrylic acid / methacrylic most alkyl copolymer and stir. Stirring conditions depend on the type and amount of the oily component to be added, but many liquid components can be emulsified by stirring at a rotational speed of about 800 to 1500 rpm at room temperature. Vigorous stirring at a high rotational speed is not required and convenience is improved.
[0018]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these. The blending amount is% by weight.
[0019]
Prior to the examples, evaluation methods for pest repellent effect and its durability, feeling on use on the applied skin surface, and emulsification stability are shown below.
[0020]
Test example and evaluation method (1) Measurement of repellent effect Each sample was applied to a person's arm and the repellent effect after each lapse of time was actually measured using a mosquito. It was evaluated with.
[0021]
(Test method) Five healthy adult males were assigned to one group, and one group was assigned to each sample. A wire mesh cage (30 × 30 ×) in which 100 human striped mosquitoes (female) having blood-absorbing ability were uniformly applied to a forearm portion of 12 cm × 5 cm of each group so that the amount of DEEΥ applied was 250 μg / cm 2. (30 cm) for 3 minutes and observed whether the mosquito started to suck blood. Finally, the number of blood sucking traces 8 hours after application was counted, and the repelling rate was calculated from the following formula.
[0022]
Repelling rate = [(X−Y) / X] × 100 (%)
X: number of blood sucking traces in the untreated section Y: number of blood sucking traces in the treated section [0023]
(2) Evaluation of feeling of use The presence or absence of stickiness was evaluated by a specialist researcher who actually applied it to his arm. The evaluation results were evaluated in terms of stickiness on the skin in four stages: “◎: non-sticky”, “◯: non-sticky”, “△: slightly sticky”, and “×: sticky”.
[0024]
(3) Evaluation of emulsion stability Each sample was stored in a thermostatic chamber at 50 ° C., and the state of each sample was examined after one month. The evaluation was performed in three stages: “◯: no separation of oil”, “Δ: slight separation of oil”, “x: clear separation of oil”.
[0025]
Furthermore, the comprehensive judgment which summarized the test result of the above item was put together in four-step evaluation.
[0026]
Example 1 and Comparative Example 1
Example 1 Production Method Each phase of A, B and C is dissolved at room temperature. While the B phase is normally stirred, the C phase and the A phase are sequentially added to form a uniform emulsion, left to degas and then filled into a container.
(Comparative example 1 manufacturing method) Each phase of A and B is melt | dissolved uniformly at 70 to 80 degreeC. Add Phase B to Phase A and stir with a homomixer (5000 rpm) for 5 minutes while maintaining 80 ° C. Thereafter, the mixture is usually stirred and the stirring is stopped at 35 ° C., the mixture is left standing, defoamed, and then filled into a container.
[0027]
[Table 1]
Figure 0004180686
[0028]
From the results of Example 1 in Table 1, the cream and emulsion pest repellent composition according to the present invention has a high repellent effect, little stickiness on the coated surface, and excellent emulsification stability. It was. Similar results were obtained when the pest repellent component was p-menthane-1,2-diol, p-menthane-3,8-diol, caran-3,4-diol, and pinane-2,3-diol. On the other hand, in Comparative Example 1 in which a conventional surfactant is used as an emulsifier, preparation takes longer than in Example 1, and the obtained preparation is sticky on the coated surface, and the feeling of use is It was not preferable.
[0029]
Examples 2 to 6
(Manufacturing method) Each phase of A, B, and C is melt | dissolved at normal temperature. While stirring the B phase, the C phase and the A phase are sequentially added to form a uniform emulsion, left to degas and then filled into a container.
[0030]
[Table 2]
Figure 0004180686
[0031]
Examples 7 to 8, Comparative Examples 2 to 4
(Manufacturing method) Each phase of A, B, and C is melt | dissolved at normal temperature. While stirring the B phase, the C phase and the A phase are sequentially added to form a uniform emulsion, left to degas and then filled into a container.
[0032]
[Table 3]
Figure 0004180686
[0033]
Comparative Examples 5 to 7
(Manufacturing method) Each phase of A, B, and C is melt | dissolved at normal temperature. While stirring the B phase, the C phase and the A phase are sequentially added to form a uniform emulsion, left to degas, and then filled into a container.
[0034]
[Table 4]
Figure 0004180686
[0035]
From the results of Tables 2 to 4, the cream and emulsion pest repellent composition according to the present invention has a high persistence in repellent effect, little stickiness on the coated surface, and an excellent emulsification stability. Similar results were obtained when the pest repellent component was p-menthane-1,2-diol, p-menthane-3,8-diol, caran-3,4-diol, and pinane-2,3-diol. On the other hand, when methylpolysiloxane and methylphenylpolysiloxane were not added, and in Comparative Examples 2 to 5 containing other silicone oils, stickiness was observed on the coated surface, and the feeling of use was not preferable. There wasn't. In Comparative Example 6 using a carboxyl vinyl polymer (Carbopol 941), the emulsification collapsed during storage and there was a problem in stability. In Comparative Example 7 in which DEET was not blended, no repellent effect was shown.
[0036]
【The invention's effect】
According to the present invention, it is possible to easily provide a cream and a milky insect pest repellent composition having a high repellent effect and having a good feeling of use because it is not sticky.

Claims (1)

害虫忌避成分としてN,N−ジエチル−m−トルアミドと、乳化剤としてアクリル酸・メタクリル酸アルキル共重合体、皮膚保護剤としてメチルポリシロキサンおよびメチルフェニルポリシロキサンから選ばれ25℃で30から100センチストークスの動粘度を有する少なくとも1種を含有し、室温において800から1500rpm程度の回転数での攪拌で乳化可能であることを特徴とするクリームおよび乳液状害虫忌避組成物。 N, N-diethyl-m-toluamide as a pest repellent component , acrylic acid / alkyl methacrylate copolymer as an emulsifier, methylpolysiloxane and methylphenylpolysiloxane as skin protectants, and 30 to 100 centistokes at 25 ° C. A cream and emulsion pest repellent composition, which contains at least one kind having a kinematic viscosity and can be emulsified by stirring at a rotational speed of about 800 to 1500 rpm at room temperature .
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