JP2004161642A - Skin medicine, such as plaster, ointment or spray, containing inorganic antimicrobial agent - Google Patents

Skin medicine, such as plaster, ointment or spray, containing inorganic antimicrobial agent Download PDF

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JP2004161642A
JP2004161642A JP2002327757A JP2002327757A JP2004161642A JP 2004161642 A JP2004161642 A JP 2004161642A JP 2002327757 A JP2002327757 A JP 2002327757A JP 2002327757 A JP2002327757 A JP 2002327757A JP 2004161642 A JP2004161642 A JP 2004161642A
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ointment
antibacterial agent
inorganic antibacterial
plaster
spray
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Japanese (ja)
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Tadashi Inoue
直史 井上
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a skin medicine, such as plaster, ointment or spray, which does not have a problem such as the crisis of an allergic disease or a problem on safety, and has sufficient effects for removing the itching of skin due to insect biting or the like. <P>SOLUTION: This skin medicine, such as plaster, ointment or spray, containing at least one inorganic antimicrobial agent, except zinc flower, containing at least one of metal ions consisting of Ag, Mn, Fe, Co, Ni, Cu and Zn ions. Thereby, the skin medicine, such as plaster, ointment or spray, having a sufficient antipruritic effect, its good sustainability and high safety is obtained. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【産業上の利用分野】本発明は、有効成分として亜鉛華以外の無機系抗菌剤を含有する新規な貼付剤、軟膏、噴霧剤等の皮膚用薬に関するものである。
【0002】
【従来技術】従来、虫さされのかゆみ止めには、アンモニア、有機系の薬剤が使用されているが、アレルギー症発生、安全性に問題があり、かつかゆみ止めの効果が十分でなかった。かゆみ止め効果が十分あり、かつ安全性の高い貼付剤、軟膏、噴霧剤等の皮膚用薬が求められていた。
【0003】
【発明が解決しようとする課題】アレルギー症発生、安全性等の問題が無く、虫さされ等のかゆみ除去に十分な効果があり、かつその効果が持続する貼付剤、軟膏、噴霧剤等の皮膚用薬を提供することである。
【0004】
【課題を解決するための手段】上記の課題は、▲1▼Ag,Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの内の少なくとも1種を含有した亜鉛華以外の無機系抗菌剤を、少なくとも1種含有するする貼付剤、軟膏等の皮膚用薬により達成される。
ポリアクリル酸ナトリウム等の水溶性高分子、グリセリン等の湿潤剤、水、油成分及び/又は界面活性剤を含有したことを特徴とする上記▲1▼記載の貼付剤、軟膏等の皮膚用薬により達成される。
本発明の皮膚用薬とは、薬事法の定める医薬品および医薬品以外のいずれをも含む。皮膚に貼り付けるテープ剤やパップ剤のような貼付剤、軟膏、クリーム類、噴霧薬、いずれの形態も含まれるが、中でも貼付剤、軟膏、クリーム類が好ましい。
【0005】本発明で用いられる無機系抗菌剤としては、Ag、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの内の少なくとも1種を含む無機系抗菌剤である。Ag系抗菌剤は塩素イオン、硫黄化合物と反応し作用を失うこと、また安全性が必ずしも十分ではなく、高価なためこれらの中ではMn、Fe、Co、Ni、CuおよびZnがより好ましい。さらに、かゆみ防止効果がより大きいことから前記の金属イオンはCuおよびZnがより好ましく、Znが最も好ましい。
【0006】本発明で用いられる無機系抗菌剤の内で、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの内の少なくとも1種を含む無機系抗菌剤は、さらに混合相手の金属イオンとして、アルカリ金属、アルカリ土類金属、チタン、ジルコニウム、アルミニウム、ケイ素の内少なくとも1種を含有することが好ましい。これらの混合金属イオンとしては、アルカリ土類金属、アルミニウム、ケイ素がより好ましい。
【0007】また、本発明の無機抗菌剤は酸化物、水酸化物が好ましく、酸化物がよち好ましい。また、複数の金属を含有する複合酸化物がさらに好ましい。また、固溶体がさらに好ましい。無機系抗菌剤の該金属イオン(Ag、Mn、Fe、Co、Ni、CuおよびZn)の含有量が2〜82重量%であることが好ましい。20〜82重量%であることがさらに好ましい。
【0008】これらの無機系抗菌剤として用いられる酸化物、水酸化物は前記式(1)〜(6)、およびCuOで表されるものがより好ましく、前記式(1)〜(6)がより好ましく、前記式(1)、(4)と(5)がさらに好ましく、さらに(1)、(4)が好ましく、(1)が最も好ましい。
O (1)
(式中、NはMgおよび/あるいはCaを示し、MはMn、Fe、Co、Ni、CuおよびZnからなる群から選ばれた金属イオンの少なくとも一種を示し、xは0.02<x<0.8である)
(OH) (2)
(式中、M、N、xは式(1)と同じである)
(MO)・(LO) (3)
(式中、M、は式(1)と同じで、Lはアルカリ金属イオンを表し、yは0.0001<y<0.1である)
(MO)・(Al・(SiO (4)
(式中、M、は式(1)と同じ。aは0.00≦a<50で、bは0.00≦b<80である。ただし、a=0の場合、bは0.001≦b<80であり、b=0の場合、aは0.001≦a<50である。)
(MO)・(XO (5)
(式中、M、は式(1)と同じ。XはTiおよび/またはZrを表す。cは0.001<c<0.2を表す。)
(MO)・(NO)・(Al (6)
(式中、M、Nは式(1)と同じ。dは0.05≦d<5で、eは0.01≦e<5ある。)
【0009】上記式(1)〜(6)において、MはCuあるいはZnがより好ましく、Znが最も好ましい。また、上記式(1)および(2)式のNはMgがより好ましい。上記式(3)のLはNa、Kが好ましい。また、上記式(4)のa,bはより好ましくは、aは0.00≦a<2で、bは0.00≦b<50である。(ただし、a=0の場合、bは0.001≦b<50であり、b=0の場合、aは0.001≦a<2である)。さらに好ましくはaは0.00≦a<0.2で、bは0.00≦b<1である。(ただし、a=0の場合、bは0.001≦b<1であり、b=0の場合、aは0.001≦a<0.2である。)
【0010】本発明の好ましい無機系抗菌剤の例を以下に挙げるが、これらに限定されるものではない。 ( )内の数字は順に、BET表面積(m2/g)、粒度D50%(μm)、ZnあるいはCuの含有量(重量%)を表す。
表す。)
(1)式
(A−1)Zn0.14Mg0.86O(15、0.5、19.9)
(A−2)A−1の表面をラウリン酸ナトリウムで修飾した抗菌剤
(15、0.5、19.9)
(A−3)Zn0.05Ca0.95O(12、0.6、19.9)
(A−4)Cu0.14Mg0.86O(30、0.3、19.4)
(2)式
(A−5)Zn0.14Mg0.86(OH)(19、0.4、19.6)
【0011】(4)式
(A−6)ZnO・(Al0.04 (30、0.3、76.5)
(A−7)A−8の表面をラウリン酸ナトリウムで修飾した抗菌剤
(30、0.3、76.5)
(A−8)CuO・(Al0.04 (30、0.3、76.0)
(A−9)ZnO・(SiO0.0 (30、0.3、77.5)
(5)式
(A−10)ZnO・(TiO0.05 (15、0.4、77.3)
(6)式
(A−11)ZnO・(MgO)1.5・(Al1.25
(60、0.3、24.3)
【0012】本発明の無機系抗菌剤はAg、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの少なくとも1種を含む無機系抗菌剤において、該無機系抗菌剤が成分の異なる2つ以上の層を含有する微粒子からなる多層構造の無機系抗菌剤も好ましい。この場合、Ag、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの少なくとも1種の含有率が、最も内側の層より最も外側の層で大きい無機系抗菌剤がより好ましい。これらの多層構造粒子からなる無機系抗菌剤の製造法としては、微粒子をAg、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの少なくとも1種を含有する溶液あるいは分散液で処理し、該微粒子の表面上にAg、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの少なくとも1種を含有する新たな層を形成する無機系抗菌剤の製造方法が好ましい。
【0013】本発明の無機系抗菌剤の殻の部分に用いられる酸化物、水酸化物は前記式(1)〜(6)、CuO、Cu(OH)2、Zn(OH)2およびZnOで表されるものがより好ましく、前記式(1)〜(6)、CuO、およびZnOがさらに好ましく、前記式(1)、(4)と(5)、CuO、およびZnOがより好ましく、さらに(1)、(4)が好ましく、(1)、CuOおよびZnOが最も好ましい。
【0014】本発明の無機系抗菌剤の核に用いられる化合物としては、上記に示した殻に用いられる化合物はいずれも好ましく用いられる。また、アルミニウム、珪素、ジルコニウム、鉄、マグネシウム、錫、チタン等の酸化物あるいは水酸化物、アルミニウム、鉄、ニッケル、銅、錫等の金属、ポリメチルメタクレート、ポリプロピレン、ポリエチレン、ポリスチレン、ポリ塩化ビニル、ポリイミド等のプラスチック樹脂が好ましい。これらの中では金属イオンの酸化物、水酸化物がより好ましく、金属イオンの酸化物がより好ましく、アルミニウム、珪素、チタン、鉄の酸化物がさらに好ましく、アルミナ、二酸化ケイ素、二酸化チタンが最も好ましい。
【0015】本発明の無機系抗菌剤の微粒子の層構成は核と殻からなる構成が好ましく、その場合、核の表面を殻が覆う率(被覆率)は10〜100%が好ましい。殻は核の表面に均一に存在しても、島状に部分的に不均一に存在してもよい。 殻は1層でも2層以上でもよい。核と殻の体積比は殻/核=1/100〜100/1でよく、1/20〜20/1がより好ましく、1/10〜5/1がさらに好ましく、1/10〜2/1が最も好ましい。
【0016】これらの無機系抗菌剤の製造方法としては、特開平6−72816号、特開平6−65011号、特開平8−291011号、特開平8−48606号、特開平11−123385号、特開平11−180808号、特開平11−209258号、特開2000−63219号記載の方法を用いることができる。ただし、これらに限定されるものではない。
【0017】本発明の多層構造の無機系抗菌剤の好ましい製造方法は以下の通りである。核となる微粒子を抗菌作用を有するAg、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの少なくとも1種を含む溶液あるいは微粒子分散液で処理し、該核となる微粒子の表面に該金属イオンを含有した層を沈積する方法である。該核となる微粒子の粒径は0.01〜10μmが好ましく、0.05〜2μmがより好ましい。この核の上に沈積する層(殻)は1層でも良いし、2層以上でもよい。2層以上の層を沈積する場合は、1層を沈積した微粒子の表面をさらにAg、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの少なくとも1種を含む溶液あるいは微粒子分散液で処理し、新たな層を沈積させる。この方法を繰り返すことで、2層以上の層を形成することができる。核となる層はアルミナ、二酸化珪素、ジルコニア等の酸化物からなることが好ましい。核にもAg、Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの少なくとも1種を含むことは好ましいが、該金属イオンの含有率は核よりもその上に沈積する層のほうが大きいことが好ましい。
【0018】粒子形成中あるいは/および後に加熱処理することが好ましい。加熱温度は核および殻の化学物質の性質に依存する。核がプラスチック樹脂の場合は通常は300℃以下、で多くの場合は200℃以下が好ましい。核が金属、酸化物、水酸化物の場合は100〜1000℃が用いられ、100〜700℃が好ましく、150〜600℃がより好ましい。
【0019】本発明で用いられる銀系の抗菌剤の例としては、「多様化する無機系抗菌剤と高度利用技術」大谷朝男編著(1998年株式会社アイピーシー出版)に記載のあるものが好ましい。中でもゼオライト、シリカゲル、ガラス、リン酸カルシウム、リン酸ジルコニウム、ケイ酸塩、酸化チタン、酸化亜鉛ウィスカー、チタン酸カリウムウィスカー、アルミナ、釉薬等に担持した銀抗菌剤、銀/ケイ酸アルミン酸マグネシウム抗菌剤、銀超微粒子抗菌剤、錯体化銀/シリカゲル抗菌剤、銀/難溶性リン酸塩抗菌剤が好ましい。
【0020】本発明の無機系抗菌剤は表面処理されることが好ましい。 表面処理剤として好ましく用いられるものを例示すれば次の通りである。ステアリン酸、エルカ酸、パルミチン酸、ラウリン酸、ベヘニン酸等の炭素数10以上の高級脂肪酸類;前記高級脂肪酸のアルカリ金属塩;ステアリルアルコール、オレイルコール等の高級アルコールの硫酸エステル塩;ポリエチレングリコールエーテルの硫酸エステル塩、アミド結合硫酸エステル塩、エステル結合硫酸エステル塩、エステル結合スルホネート、アミド結合スルホン酸塩、エーテル結合スルホン酸塩、エーテル結合アルキルアリルスルホン酸塩、エステル結合アルキルアリルスルホン酸塩、アミド結合アルキルアリルスルホン酸塩等のアニオン系界面活性剤類;オルトリン酸とオレイルアルコール、ステアリルアルコール等のモノまたはジエステルまたは両者の混合物であって、それらの酸型またはアルカリ金属塩またはアミン塩等のリン酸エステル類;ビニルエトキシシラン、ビニルートリス(2−メトキシエトキシ)シラン、ガンマ−メタクリロキシプロピルトリメトキシシラン、ガンマ−アミノプロピルトリメトキシシラン、ベーター(3,4−エポキシシクロヘキシル)エチルトリメトキシシラン、ガンマ−グリシドキシプロピルトリメトキシシラン、ガンマ−メルカプトプロピルトリメトキシシラン等のシランカップリング剤類;イソプロピルトリイソステアロイルチタネート、イソプロピルトリス(ジオクチルパイロフォスフェート)チタネート、イソプロピルトリ(N−アミノエチル−アミノエチル)チタネート、イソプロピルトリデシルベンゼンスルホニルチタネート等のチタネート系カップリング剤類;アセトアルコキシアルミニウムジイソプロピレート等のアルミニウム系カップリング剤類;グリセリンモノステアレート、グリセリンモノオレエート等の多価アルコールと脂肪酸のエステル類。
【0021】この中でも、高級脂肪酸、アニオン系界面活性剤、リン酸エステル、カップリング剤(シラン系、チタネート系、アルミニウム系)および多価アルコールと脂肪酸のエステル類からなる群から選ばれた表面処理剤の内の少なくとも一種による表面処理が好ましく、さらにステアリン酸、エルカ酸、パルミチン酸、ラウリン酸、ベヘニン酸等の炭素数10以上の高級脂肪酸類および前記高級脂肪酸のアルカリ金属塩が特に好ましい。表面処理は特開2001−123071号の実施例1記載の方法に準じた方法で行うことができる。
【0022】本発明の無機系抗菌剤の粒度D50%が0.01〜20μmが好ましく、0.03〜5μmがより好ましく、0.05〜2μmがさらに好ましい。粒子サイズは、5分間以上超音波で分散させられた後に、レーザー散乱法で測定した値である。
抗菌剤のBET表面積は重要な指標である。一般に抗菌効果を迅速に働かすためには、極めて大きいBET表面積が好ましい。しかし、一方では抗菌効果を持続させるためにはある程度以下の値にする必要がある。そのため、BET表面積は1〜300m2/gが好ましく、3〜150m2/gがより好ましく、5〜150m2/gがさらに好ましい。
【0023】水溶性増粘剤あるいは水溶性高分子としては、ポリアクリル酸、ポリアクリル酸ナトリウム、メチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロース、アルギン酸ナトリウム、ポリビニルアルコール、カルボキシビニルポリマー、カルボキシメチルセルロースナトリウム、ゼラチン、カゼイン等を用いることができる。湿潤剤としてはグリセリン、ソルビトール、1,3ブチレングリコール、ポリエチレングリコール等を用いることができる。油成分としてはクロタミトン、ヒマシ油、ミリスチン酸イソプロピル、アジピン酸ジイソプロピル等を用いることができる。界面活性剤としては、ポエイオキシエチレン硬化ヒマシ油、グリセリン脂肪酸エステル、ソルビタン脂肪酸エステル、プロピレングリコール脂肪酸エステル等を用いることができる。その他にクエン酸、酒石酸、等のpH調整剤、パラオキシ安息香酸メチル、チモール等の防腐剤、エデト酸ナトリウム等の安定化剤、架橋剤としてアルミニウム金属塩、充填剤として、亜鉛華、チタン、タルク、ケイ酸アルミニウム、カオリン、無水ケイ酸等を配合しても構わない。
【0024】
以下、実施例を挙げて本発明を更に説明する。
【比較例1】白色ワセリンをサンプルC−1とした。また、これに亜鉛華を1重量%添加したものをサンプルC−2とした。
【実施例1】亜鉛華の代わりに、各々本発明の無機系抗菌剤A−1、2、5,6,7を1重量%添加した以外は、サンプルC−2と同様に本発明のサンプルH−1〜5を作製した。また、同様にして亜鉛華の代わりにゼオライト担持銀系抗菌剤1重量%添加しサンプルH−6を作製した。
【実施例2】成人男女6人に夕方の庭で蚊に刺された後に、刺された箇所に本発明の軟膏H−1〜6、比較例C−1,2を塗り、かゆみ止めの効果を評価した。かゆみ止めの効果は大きい方から、 H−2,5>H−1、4>H−3>>H−6>>C−2>C−1であった。本発明の無機系抗菌剤を含有したサンプルはいずれも比較例のサンプルC−1,2よりかゆみ止め効果が大きく好ましかった。中でも、表面処理をした無機系抗菌剤を用いたサンプルH−2,5は特にかゆみ止め効果が大きく好ましかった。また、銀系抗菌剤を用いたH−6はやや効果が小さく、本発明のサンプルの中では好ましくなかった。
【比較例2】ステアリルアルコール240g、プロピレングリコール120g、ポリアクリル酸ナトリウム50g、白色ワセリン250g、ポリエチレンオキサイド硬化ひまし油40g、モノステアリン酸グリセリン10g、パラオキシ安息香酸メチル1g、パラオキシ安息香酸プロピル1gを撹拌混練し、軟膏を作製した(サンプルC−3)。また、これに亜鉛華を対固形分1重量%添加した以外はC−3と同様にして比較例サンプルC−4を作製した。
【実施例3】亜鉛華の代わりに各々本発明の無機系抗菌剤A−1、2,6,7を用いた以外はサンプルC−4と同様にして本発明の軟膏サンプルH−7,8,9,10を作製した。
【実施例4】実施例2と同様の方法で本発明のサンプルH−7〜10および比較例サンプルC−3,4のかゆみ止めの効果を評価した。かゆみ止めの効果は大きい方から、 H−8,10>H−7、9>>C−4、C−3であった。本発明の無機系抗菌剤を含有した軟膏はいずれも比較例の軟膏C−3,4よりかゆみ止め効果が大きく好ましかった。中でも、表面処理をした無機系抗菌剤を用いたサンプルH−8、10は特にかゆみ止め効果が大きく好ましかった。
【比較例3】フルルビプロフェン含有貼付剤カルボキシビニルポリマー2重量%を適量の精製水に撹拌溶解し、Dソルビトール液30重量%を加え撹拌する。次に適量の精製水に溶解したメタケイ酸アルミン酸マグネシウムを加え撹拌し均一にする。これにフルルビプロフェン0.35重量%、ノニオンL4を2重量%を約60℃で溶解し室温まで放冷したものを加え撹拌して均一にする。更にポリアクリル酸ナトリウム5重量%を濃グリセリン20重量%に均一に分散させた溶液を加え、撹拌混合し膏体とした。この膏体を不織布に塗工し、表面をプラスチックフイルムで覆い、所定の大きさに裁断し、貼付剤サンプルC−5とした。亜鉛華を対固形分2重量%添加し対外はサンプルC−5と同様にしてサンプルC−6を作製した。
【実施例5】亜鉛華の代わりに各々本発明の無機系抗菌剤A−1、2,6,7を用いた以外はサンプルC−5と同様にして本発明の貼付剤サンプルH−11〜14を作製した。
【実施例6】実施例2と同様の方法で本発明のサンプルH−11〜14および比較例サンプルC−5,6のかゆみ止めの効果を評価した。かゆみ止めの効果は大きい方から、H−12.14>H−11,13>>C−5,6であった。本発明の無機系抗菌剤を含有した貼付剤ザンプルはいずれも比較例の貼付剤C−5,6よりかゆみ止め効果が大きく好ましかった。中でも、表面処理をした無機系抗菌剤を用いたサンプルH−12,14は特にかゆみ止め効果が大きく好ましかった。
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel skin patch such as a patch, ointment or spray containing an antibacterial agent other than zinc white as an active ingredient.
[0002]
2. Description of the Related Art Conventionally, ammonia and organic drugs have been used to prevent itching of insect bites. However, there have been problems with allergic disease occurrence and safety, and the effect of preventing itching was not sufficient. There has been a demand for highly safe skin patches such as patches, ointments and sprays that have a sufficient anti-itch effect and are highly safe.
[0003]
There are no problems such as allergic disease occurrence and safety, and it has a sufficient effect for removing itch such as insect bites, and a patch, an ointment, a spray and the like which has a long-lasting effect. It is to provide a skin medicine.
[0004]
Means for Solving the Problems The above-mentioned problems are as follows: (1) An inorganic antibacterial other than zinc white containing at least one of metal ions consisting of Ag, Mn, Fe, Co, Ni, Cu and Zn. It is achieved by a dermatological agent such as a patch or ointment containing at least one agent.
The skin patch such as the patch or ointment described in the above item (1), comprising a water-soluble polymer such as sodium polyacrylate, a wetting agent such as glycerin, water, an oil component and / or a surfactant. Is achieved by
The dermatological agent of the present invention includes both pharmaceuticals and pharmaceuticals stipulated by the Pharmaceutical Affairs Law. Patches such as tapes and cataplasms to be adhered to the skin, ointments, creams, and sprays are all included, and among them, patches, ointments, and creams are preferred.
[0005] The inorganic antibacterial agent used in the present invention is an inorganic antibacterial agent containing at least one of metal ions consisting of Ag, Mn, Fe, Co, Ni, Cu and Zn. Ag-based antibacterial agents react with chloride ions and sulfur compounds to lose their action, and are not necessarily sufficiently safe and expensive, and among them, Mn, Fe, Co, Ni, Cu and Zn are more preferable. Further, the metal ions are more preferably Cu and Zn, and most preferably Zn, because of the greater anti-itch effect.
[0006] Among the inorganic antibacterial agents used in the present invention, the inorganic antibacterial agent containing at least one of metal ions consisting of Mn, Fe, Co, Ni, Cu and Zn is further mixed with a metal to be mixed. It is preferable to contain at least one of alkali metals, alkaline earth metals, titanium, zirconium, aluminum and silicon as ions. As these mixed metal ions, alkaline earth metals, aluminum and silicon are more preferred.
The inorganic antibacterial agent of the present invention is preferably an oxide or a hydroxide, and more preferably an oxide. Further, a composite oxide containing a plurality of metals is more preferable. Further, a solid solution is more preferable. It is preferable that the content of the metal ion (Ag, Mn, Fe, Co, Ni, Cu and Zn) of the inorganic antibacterial agent is 2 to 82% by weight. More preferably, it is 20 to 82% by weight.
The oxides and hydroxides used as these inorganic antibacterial agents are more preferably those represented by the above formulas (1) to (6) and CuO. More preferably, the above formulas (1), (4) and (5) are further preferable, (1) and (4) are more preferable, and (1) is most preferable.
M x N 1 - x O ( 1)
(Wherein, N represents Mg and / or Ca, M represents at least one metal ion selected from the group consisting of Mn, Fe, Co, Ni, Cu and Zn, and x represents 0.02 <x < 0.8)
M y N 1 - x (OH ) 2 (2)
(Where M, N, and x are the same as in equation (1))
(MO) ・ (L 2 O) y (3)
(Wherein, M is the same as in the formula (1), L represents an alkali metal ion, and y is 0.0001 <y <0.1)
(MO) · (Al 2 O 3 ) a · (SiO 2 ) b (4)
(In the formula, M is the same as the formula (1). A is 0.00 ≦ a <50 and b is 0.00 ≦ b <80. However, when a = 0, b is 0.001. ≦ b <80, and when b = 0, a is 0.001 ≦ a <50.)
(MO) · (XO 2 ) c (5)
(In the formula, M is the same as in the formula (1). X represents Ti and / or Zr. C represents 0.001 <c <0.2.)
(MO) · (NO) d · (Al 2 O 3 ) e (6)
(In the formula, M and N are the same as the formula (1). D is 0.05 ≦ d <5, and e is 0.01 ≦ e <5.)
In the above formulas (1) to (6), M is more preferably Cu or Zn, most preferably Zn. In the above formulas (1) and (2), N is more preferably Mg. L in the above formula (3) is preferably Na or K. Further, a and b in the above formula (4) are more preferably a is 0.00 ≦ a <2 and b is 0.00 ≦ b <50. (However, when a = 0, b is 0.001 ≦ b <50, and when b = 0, a is 0.001 ≦ a <2). More preferably, a is 0.00 ≦ a <0.2 and b is 0.00 ≦ b <1. (However, when a = 0, b is 0.001 ≦ b <1, and when b = 0, a is 0.001 ≦ a <0.2.)
Preferred examples of the inorganic antibacterial agent of the present invention are shown below, but are not limited thereto. The numbers in parentheses indicate the BET surface area (m2 / g), the particle size D50% (μm), and the content of Zn or Cu (% by weight) in order.
Represent. )
(1) Formula (A-1) Zn 0.14 Mg 0.86 O (15, 0.5, 19.9)
(A-2) Antibacterial agent in which the surface of A-1 is modified with sodium laurate (15, 0.5, 19.9)
(A-3) Zn 0.05 Ca 0.95 O (12,0.6,19.9)
(A-4) Cu 0.14 Mg 0.86 O (30, 0.3, 19.4)
(2) Formula (A-5) Zn 0.14 Mg 0.86 (OH) 2 (19, 0.4, 19.6)
(4) Formula (A-6) ZnO. (Al 2 O 3 ) 0.04 (30, 0.3, 76.5)
(A-7) Antibacterial agent having A-8 surface modified with sodium laurate (30, 0.3, 76.5)
(A-8) CuO. (Al 2 O 3 ) 0.04 (30, 0.3, 76.0)
(A-9) ZnO · ( SiO 2) 0.0 5 (30,0.3,77.5)
(5) Formula (A-10) ZnO · (TiO 2 ) 0.05 (15, 0.4, 77.3)
(6) (A-11) ZnO · ( MgO) 1.5 · (Al 2 O 3) 1.25
(60, 0.3, 24.3)
The inorganic antibacterial agent of the present invention is an inorganic antibacterial agent containing at least one metal ion consisting of Ag, Mn, Fe, Co, Ni, Cu and Zn, wherein the inorganic antibacterial agent has a different component. An inorganic antibacterial agent having a multilayer structure composed of fine particles containing two or more layers is also preferable. In this case, an inorganic antibacterial agent in which the content of at least one kind of metal ion composed of Ag, Mn, Fe, Co, Ni, Cu and Zn is larger in the outermost layer than in the innermost layer is more preferable. As a method for producing an inorganic antibacterial agent composed of these multilayer particles, fine particles are treated with a solution or a dispersion containing at least one metal ion composed of Ag, Mn, Fe, Co, Ni, Cu and Zn. It is preferable to use a method for producing an inorganic antibacterial agent which forms a new layer containing at least one kind of metal ion consisting of Ag, Mn, Fe, Co, Ni, Cu and Zn on the surface of the fine particles.
The oxides and hydroxides used in the shell portion of the inorganic antibacterial agent of the present invention are the above formulas (1) to (6), CuO, Cu (OH) 2, Zn (OH) 2 and ZnO. Those represented by formulas (1) to (6), CuO and ZnO are more preferable, and formulas (1), (4) and (5), CuO and ZnO are more preferable, and ( 1) and (4) are preferred, and (1), CuO and ZnO are most preferred.
As the compound used for the core of the inorganic antibacterial agent of the present invention, any of the compounds used for the shells described above are preferably used. Also, oxides or hydroxides such as aluminum, silicon, zirconium, iron, magnesium, tin, and titanium, metals such as aluminum, iron, nickel, copper, and tin, polymethyl methacrylate, polypropylene, polyethylene, polystyrene, and polychloride Plastic resins such as vinyl and polyimide are preferred. Among these, metal ion oxides and hydroxides are more preferable, metal ion oxides are more preferable, aluminum, silicon, titanium and iron oxides are more preferable, and alumina, silicon dioxide and titanium dioxide are most preferable. .
The layer constitution of the fine particles of the inorganic antibacterial agent of the present invention is preferably composed of a nucleus and a shell. In this case, the rate of the shell covering the surface of the nucleus (coverage) is preferably 10 to 100%. The shell may be present uniformly on the surface of the nucleus or may be partially non-uniform in the form of islands. The shell may be a single layer or two or more layers. The volume ratio between the core and the shell may be shell / nucleus = 1/100 to 100/1, more preferably 1/20 to 20/1, still more preferably 1/10 to 5/1, and 1/10 to 2/1. Is most preferred.
The method for producing these inorganic antibacterial agents is described in JP-A-6-72816, JP-A-6-65011, JP-A-8-29111, JP-A-8-48606, JP-A-11-123385, The methods described in JP-A-11-180808, JP-A-11-209258 and JP-A-2000-63219 can be used. However, it is not limited to these.
A preferred method for producing the multilayered inorganic antibacterial agent of the present invention is as follows. The core fine particles are treated with a solution or a fine particle dispersion containing at least one metal ion composed of Ag, Mn, Fe, Co, Ni, Cu and Zn having an antibacterial effect, and the surface of the core fine particles is treated with the solution. This is a method of depositing a layer containing metal ions. The particle size of the core fine particles is preferably 0.01 to 10 μm, more preferably 0.05 to 2 μm. The layer (shell) deposited on the nucleus may be one layer or two or more layers. When two or more layers are deposited, the surface of the fine particles in which one layer is deposited is further coated with a solution or a fine particle dispersion containing at least one metal ion composed of Ag, Mn, Fe, Co, Ni, Cu and Zn. Process and deposit a new layer. By repeating this method, two or more layers can be formed. The core layer is preferably made of an oxide such as alumina, silicon dioxide, and zirconia. It is preferable that the nucleus also contains at least one kind of metal ion composed of Ag, Mn, Fe, Co, Ni, Cu and Zn, but the content of the metal ion is larger in the layer deposited thereon than in the nucleus. Is preferred.
Preferably, heat treatment is performed during or / and after the formation of the particles. The heating temperature depends on the nature of the core and shell chemicals. When the core is a plastic resin, the temperature is usually 300 ° C. or lower, and in many cases, 200 ° C. or lower. When the nucleus is a metal, oxide, or hydroxide, 100 to 1000 ° C is used, preferably 100 to 700 ° C, and more preferably 150 to 600 ° C.
Examples of the silver-based antibacterial agents used in the present invention include those described in “Diversifying Inorganic Antibacterial Agents and Advanced Utilization Technology”, edited by Asao Otani (1998 PC Publishing Co., Ltd.). preferable. Among them, zeolite, silica gel, glass, calcium phosphate, zirconium phosphate, silicate, titanium oxide, zinc oxide whisker, potassium titanate whisker, alumina, silver antibacterial agent carried on glaze, silver / magnesium aluminate antibacterial agent, Preferred are silver ultrafine particle antibacterial agents, complexed silver / silica gel antibacterial agents, and silver / poorly soluble phosphate antibacterial agents.
The inorganic antibacterial agent of the present invention is preferably subjected to a surface treatment. Examples of the surface treatment agent preferably used are as follows. Higher fatty acids having 10 or more carbon atoms such as stearic acid, erucic acid, palmitic acid, lauric acid, and behenic acid; alkali metal salts of the higher fatty acids; sulfuric ester salts of higher alcohols such as stearyl alcohol and oleyl alcohol; polyethylene glycol ether Sulfate, amide bond sulfate, ester bond sulfate, ester bond sulfonate, amide bond sulfonate, ether bond sulfonate, ether bond alkylallyl sulfonate, ester bond alkylallyl sulfonate, amide Anionic surfactants such as a bonded alkylallyl sulfonate; orthophosphoric acid and mono- or diesters such as oleyl alcohol and stearyl alcohol or a mixture of both; Phosphates such as vinyl salts; vinylethoxysilane, vinyltris (2-methoxyethoxy) silane, gamma-methacryloxypropyltrimethoxysilane, gamma-aminopropyltrimethoxysilane, beta (3,4-epoxycyclohexyl) ethyltri Silane coupling agents such as methoxysilane, gamma-glycidoxypropyltrimethoxysilane, gamma-mercaptopropyltrimethoxysilane; isopropyltriisostearoyl titanate, isopropyltris (dioctylpyrophosphate) titanate, isopropyltri (N-amino) Titanate-based coupling agents such as ethyl-aminoethyl) titanate and isopropyltridecylbenzenesulfonyl titanate; acetoalkoxy aluminum diisopropane Aluminum coupling agents such as Pireto; glycerol monostearate, esters of polyhydric alcohols and fatty acids such as glycerol monooleate.
Among them, surface treatments selected from the group consisting of higher fatty acids, anionic surfactants, phosphate esters, coupling agents (silane-based, titanate-based, aluminum-based) and esters of fatty acids with polyhydric alcohols. Surface treatment with at least one of the agents is preferable, and higher fatty acids having 10 or more carbon atoms such as stearic acid, erucic acid, palmitic acid, lauric acid, and behenic acid, and alkali metal salts of the higher fatty acids are particularly preferable. The surface treatment can be performed by a method according to the method described in Example 1 of JP-A-2001-123071.
The particle size D50% of the inorganic antibacterial agent of the present invention is preferably from 0.01 to 20 μm, more preferably from 0.03 to 5 μm, even more preferably from 0.05 to 2 μm. The particle size is a value measured by a laser scattering method after being dispersed by ultrasonic waves for 5 minutes or more.
The BET surface area of an antimicrobial is an important indicator. Generally, a very large BET surface area is preferred for rapid antimicrobial effects. However, on the other hand, in order to maintain the antibacterial effect, it is necessary to set the value to a certain value or less. Therefore, the BET surface area is preferably 1 to 300 m2 / g, more preferably 3 to 150 m2 / g, and still more preferably 5 to 150 m2 / g.
Examples of the water-soluble thickener or water-soluble polymer include polyacrylic acid, sodium polyacrylate, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, sodium alginate, polyvinyl alcohol, carboxyvinyl polymer, sodium carboxymethylcellulose, gelatin, Casein or the like can be used. Glycerin, sorbitol, 1,3 butylene glycol, polyethylene glycol and the like can be used as the wetting agent. As the oil component, crotamiton, castor oil, isopropyl myristate, diisopropyl adipate and the like can be used. As the surfactant, for example, poioxyethylene hydrogenated castor oil, glycerin fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester and the like can be used. In addition, pH adjusters such as citric acid and tartaric acid, preservatives such as methyl paraoxybenzoate and thymol, stabilizers such as sodium edetate, aluminum metal salts as a cross-linking agent, zinc white, titanium, talc as a filler , Aluminum silicate, kaolin, silicic anhydride and the like may be blended.
[0024]
Hereinafter, the present invention will be further described with reference to examples.
Comparative Example 1 White petrolatum was used as sample C-1. A sample obtained by adding zinc white at 1% by weight to this was designated as Sample C-2.
Example 1 A sample of the present invention was prepared in the same manner as in Sample C-2 except that 1% by weight of each of the inorganic antibacterial agents A-1, 2, 5, 6, and 7 of the present invention was added instead of zinc white. H-1 to H-5 were produced. In the same manner, sample H-6 was prepared by adding 1% by weight of a zeolite-supported silver-based antibacterial agent instead of zinc white.
Example 2 Ointments H-1 to 6 and Comparative Examples C-1 and 2 of the present invention were applied to stabbed portions of mosquitoes in the evening garden after six adult men and women were bitten by mosquitoes, and the effect of anti-itch was evaluated. did. H-2,5> H-1, 4> H-3 >> H-6 >>C-2> C-1 in descending order of the anti-itch effect. Each of the samples containing the inorganic antibacterial agent of the present invention had a greater anti-itch effect than the samples C-1 and C-2 of the comparative example. Above all, Samples H-2 and H5 using the surface-treated inorganic antibacterial agent had a particularly preferable anti-itch effect. In addition, H-6 using a silver-based antibacterial agent had a somewhat small effect, and was not preferable among the samples of the present invention.
Comparative Example 2 240 g of stearyl alcohol, 120 g of propylene glycol, 50 g of sodium polyacrylate, 250 g of white petrolatum, 40 g of polyethylene oxide-hardened castor oil, 10 g of glyceryl monostearate, 1 g of methyl parahydroxybenzoate and 1 g of propyl paraoxybenzoate were stirred and kneaded. An ointment was prepared (Sample C-3). Also, a comparative sample C-4 was prepared in the same manner as C-3 except that zinc white was added to the solid content at 1% by weight.
Example 3 Ointment samples H-7, 8 of the present invention were prepared in the same manner as Sample C-4 except that the inorganic antibacterial agents A-1, 2, 6, and 7 of the present invention were used instead of zinc white. , 9, and 10 were produced.
Example 4 In the same manner as in Example 2, the anti-itch effect of Samples H-7 to 10 of the present invention and Comparative Samples C-3 and 4 were evaluated. H-8, 10> H-7, 9 >> C-4, C-3, in order of the greater anti-itch effect. All the ointments containing the inorganic antibacterial agent of the present invention had a greater anti-itch effect than the ointments C-3, 4 of Comparative Example, and were preferred. Above all, Samples H-8 and 10 using the surface-treated inorganic antibacterial agent had a particularly preferable anti-itch effect.
Comparative Example 3 2% by weight of flurbiprofen-containing patch carboxyvinyl polymer was dissolved in an appropriate amount of purified water with stirring, and 30% by weight of D sorbitol solution was added and stirred. Next, magnesium aluminate metasilicate dissolved in an appropriate amount of purified water is added and stirred to make it uniform. A solution obtained by dissolving 0.35% by weight of flurbiprofen and 2% by weight of nonion L4 at about 60 ° C. and allowing it to cool to room temperature is added, followed by stirring to make the mixture uniform. Further, a solution in which 5% by weight of sodium polyacrylate was uniformly dispersed in 20% by weight of concentrated glycerin was added, and the mixture was stirred and mixed to obtain a plaster. The plaster was applied to a nonwoven fabric, the surface was covered with a plastic film, and cut into a predetermined size to obtain a patch sample C-5. Zinc white was added at 2% by weight based on the solid content, and a sample C-6 was prepared in the same manner as the sample C-5 except for the outside.
Example 5 Patch samples H-11 to H-11 of the present invention were prepared in the same manner as Sample C-5 except that the inorganic antibacterial agents A-1, 2, 6, and 7 of the present invention were used instead of zinc white. 14 was produced.
Example 6 In the same manner as in Example 2, the anti-itch effect of Samples H-11 to H-14 of the present invention and Comparative Samples C-5 and C-6 were evaluated. H-12.14> H-11,13 >> C-5,6 in order of the effect of the anti-itch. The patch sample containing the inorganic antibacterial agent of the present invention had a much greater anti-itch effect than the patch C-5 or 6 of Comparative Example. Above all, Samples H-12 and H14 using the surface-treated inorganic antibacterial agent had a particularly favorable anti-itch effect.

Claims (1)

Ag,Mn、Fe、Co、Ni、CuおよびZnからなる金属イオンの内の少なくとも1種を含有した亜鉛華以外の無機系抗菌剤を、少なくとも1種含有することを特徴とする貼付剤、軟膏、噴霧剤等の皮膚用薬。Patches and ointments characterized by containing at least one inorganic antibacterial agent other than zinc white containing at least one of metal ions consisting of Ag, Mn, Fe, Co, Ni, Cu and Zn. And skin medicines such as sprays.
JP2002327757A 2002-11-12 2002-11-12 Skin medicine, such as plaster, ointment or spray, containing inorganic antimicrobial agent Pending JP2004161642A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008001444A1 (en) * 2006-06-29 2008-01-03 Tomotaka Yanagita Phosphoric acid-adsorbing drug for external use having effect of inhibiting microbial growth, product containing the same and method of producing the same
JP2008518712A (en) * 2004-11-07 2008-06-05 ザ カプロン コーポレイション Copper-containing material for the treatment of wounds, burns and other skin conditions
EP2204178A1 (en) * 2007-10-29 2010-07-07 Kyowa Chemical Industry Co., Ltd. Laxative agent

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008518712A (en) * 2004-11-07 2008-06-05 ザ カプロン コーポレイション Copper-containing material for the treatment of wounds, burns and other skin conditions
JP2013081792A (en) * 2004-11-07 2013-05-09 Cupron Inc Copper containing material for treating wound, burn and other skin condition
KR101528918B1 (en) * 2004-11-07 2015-06-15 쿠프론 인코포레이티드 Copper containing materials for treating wounds, burns and other skin conditions
WO2008001444A1 (en) * 2006-06-29 2008-01-03 Tomotaka Yanagita Phosphoric acid-adsorbing drug for external use having effect of inhibiting microbial growth, product containing the same and method of producing the same
EP2204178A1 (en) * 2007-10-29 2010-07-07 Kyowa Chemical Industry Co., Ltd. Laxative agent
EP2204178A4 (en) * 2007-10-29 2010-11-24 Kyowa Chem Ind Co Ltd Laxative agent

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