JPH045646B2 - - Google Patents

Info

Publication number
JPH045646B2
JPH045646B2 JP56105019A JP10501981A JPH045646B2 JP H045646 B2 JPH045646 B2 JP H045646B2 JP 56105019 A JP56105019 A JP 56105019A JP 10501981 A JP10501981 A JP 10501981A JP H045646 B2 JPH045646 B2 JP H045646B2
Authority
JP
Japan
Prior art keywords
patch
salicylic acid
styrene
weight
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP56105019A
Other languages
Japanese (ja)
Other versions
JPS588011A (en
Inventor
Tadashi Kosaka
Kazuoki Komata
Fumio Urushizaki
Tomohiro Ootsuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisho Pharmaceutical Co Ltd
Original Assignee
Taisho Pharmaceutical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taisho Pharmaceutical Co Ltd filed Critical Taisho Pharmaceutical Co Ltd
Priority to JP56105019A priority Critical patent/JPS588011A/en
Publication of JPS588011A publication Critical patent/JPS588011A/en
Publication of JPH045646B2 publication Critical patent/JPH045646B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は貼付薬に関し、更に詳しくは多量のサ
リチル酸を配合した、魚の目、いぼなどの治療に
用いる貼付薬に関するものである。 生ゴム,樹脂類よりなる絆創膏基剤にサリチル
酸などの角質軟化剤を配合した貼付薬を製造する
ことは、第9改正日本薬局方にも記載されてい
て、広く一般に使用されている。 しかしながら、前記基剤にサリチル酸を配合し
たこの種の貼付薬の膏体は、生ゴム,ロジンなど
の天然物が占める割合が多いため、 サリチル酸の放出性がよくない。 経年安定性がよくない。 温度変化による粘着力の変動が大きい。 貼付時に、体温により膏体の流れを生じる。 (すなわち、患部以外の健康な皮膚までサリセル
酸の作用を受けることになる。) 貼付時、皮膚にかぶれを生じることが多い。 品質のばらつきが大きい。 などの欠点があつた。 本発明の目的は、これらの欠点を各良するとと
もに多量のサリチル酸を配合した、魚の目、いぼ
などの治療に用いる貼付薬を提供することであ
る。 本発明の貼付薬は、スチレン−イソプレン−ス
チレン・テレブロツク共重合体樹脂5〜30重量
%、脂環族飽和炭化水素樹脂10〜40重量%、流動
パラフイン20〜40重量%およびサリチル酸からな
る貼付薬である。 本発明において、スチレン−イソプレン−スチ
レン・テレブロツク共重合体樹脂とは、そのゴム
構成がポリイソプレンが形成するゴム相とポリス
チレン部分が形成するポリスチレン・ドメインと
からなり、かつゴム相がポリスチレン・ドメイン
によつて架橋されている熱可塑性未加流ゴム弾性
体である。これは各種のグレードが市販されてい
るが、カリフレツクスTR1107(シエル化学社製)
などが好ましく、前記配合量の範囲をはずれると
膏体が硬くなり皮膚への接着性が低下する。 膏体の皮膚に対する粘着性を向上させるため
に、従来は、ロジン系樹脂,ダンマルなどの天然
樹脂を用いていたが、これらの樹脂は貼付薬膏体
の前記不都合な性質の原因となるので好ましくな
い。 本発明の脂環族飽和炭化水素樹脂は、前記スチ
レン−イソプレン−スチレン・テレブロツク共重
合体のポリスチレン・ドメイン相に相溶性がな
く、ゴム相には相溶性があり、前記スチレン−イ
ソプレン−スチレン・テレブロツク共重合体を含
む膏体の皮膚に対する粘着性を向上させるために
用いる。 これも各種グレードが市販されているが、アル
コンp−100[荒川化学(株)製]などが好ましく、前
記配合量の範囲をはずれると膏体が硬くなり皮膚
への接着性が低下する。 流動パラフインは第9改正日本薬局方に記載の
ものを用いるが、配合量が20重量%未満では膏体
が硬くなつて皮膚への接着性が低下し、40重量%
を超えると膏体からの流動パラフインの浸出が起
こる。 サリチル酸の配合量は、20重量%からこの種の
貼付薬の常用量の上限である50重量%前後までの
範囲でよいが、配合成分およびその配合比の関係
から好ましくは20〜40重量%、更に好ましくは30
〜40重量%である。その配合量が50重量%を超え
るにつれて膏体が硬くなつて皮膚への接着性が低
下し、20重量%未満では薬効が十分でなくなる。 サリチル酸の皮膚への浸透性を向上するために
サリチル酸の量の一割程度の尿素を用いることが
可能である。 その他必要に応じて、BHT(ジブチルヒドロキ
シルエン)などの老化防止剤,補強用充填剤を膏
体のゲル状性質を破壊しない程度に添加すること
ができる。 本発明の貼付薬は、たとえば次の方法によつて
製造することができる。 すなわち、流動パラフインをスチレン−イソプ
レン−スチレン・テレブロツク共重合体樹脂に予
め溶解させ、この溶解物を脂環族飽和炭化水素樹
脂と酸化防止剤と共にニーダー混練機などで均一
に混練させる。この混練物を約60℃に保ち、更に
サリチル酸と尿素とをこれに混練して約一に分散
し、膏体を調製する。 第1図に示すように、この膏体をその中央部に
塗付したパツドを粘着支持体の粘着面に載置し、
パツドを含む粘着面の全面を剥離片で被覆して本
発明の貼付薬を製造することができる。 粘着支持体は常用の絆創膏ほう帯と同様にして
製造される。 本発明の貼付薬は、天然樹脂を用いた従来の貼
付薬膏体の前記の不都合な性質を著しく改善した
ばかりでなく。通常の消炎鎮痛貼付薬に比してき
わめて多量の薬物を含みながらも経時安定性、自
己粘着性や皮膚への接着性がすぐれていて、魚の
目、いぼなどの治療に極めて効果的である。 次に、本発明の貼付薬の製造例を示す実施例お
よび本発明の貼付薬のすぐれた諸性質を示す試験
例を挙げて本発明の具体的に説明する。 実施例 1 流動パラフイン30部をカリフレツクスTR1107
(シエル化学社製,スチレン−イソプレン−スチ
レン・テレブロツク共重合体樹脂)10部に予め溶
解させた後、これをBHT1部およびアルコールP
−100[荒川化学(株)製,脂環族飽和炭化水素樹脂]
30部と共にニーダー混練機によつて均一に混練し
た。この混練物を60℃に保つて混練しながら、こ
れにサリチル酸50部および尿素5部を加えて均一
に分散し、膏体を調製した。 パツド中央部に膏体を塗着し、このパツドを常
用の粘着支持体の粘着面に載置し、パツドを含む
粘着面の全面を剥離片で被覆して第1図に示すよ
うな貼付薬を製造した。 実施例 2 カリフレツクスTR1107 15部,アルコンP−
100 30部,流動パラフイン20部,サリチル酸30
部,尿素5部,BHT1部を用い、実施例1に準じ
て処理し、貼付薬を製造した。 試験例 1 生ゴムRSS1号(BATO社製)14部,ロジンエ
ステル〔荒川化学(株)製〕4部,ポリブテン300H
〔出光石油化学(株)製〕22部,ラノリン12部,サリ
チル酸50部,尿素5部,BHT1部を用い、実施例
1に準じて処理し、貼付薬を製造してコントロー
ルとした。 実施例1および2で製造した貼付薬(以下、そ
れぞれAおよBと称する。)並びにコントロール
の貼付薬(以下、Cと称する。)について、以下
に述べる方法によつて膏体からのサリチル酸の放
出量の経時変化を測定した。 その結果を第2図に示す。 (測定法) A,BおよびCの膏体500mgを厚さ約1mmのシ
ート状にして秤量し、これを500mlの精製水に入
れ、25℃に保ちながらスターラーにて撹拌し、一
定時間毎に溶液をサンプリングし、水中に溶出し
たサリチル酸の量を紫外部吸収測定により定量す
る。 試験例 2 試験例1で調製したA,BおよびCの膏体を布
に均一に塗布し、巾1cmの試料片を調製した。こ
の試料片について、お互いに膏体面を貼り合せ、
上島製作所UF式恒温槽付引張試験機を用い、凝
集破壊速度200mm/分,破壊温度40℃,相対湿度
75%で定速T型凝集破壊試験を行なうことにより
膏体の凝集力の経時変化を測定し、経変安定性に
ついて調べた。 その結果を第3図に示す。 試験例 3 試験例2で調製した試料片について、上島製作
所UF式恒温槽付引張試験機を用いて、第9改正
日本薬局方記載の絆創膏粘着力試験に準じて定速
180゜角剥離試験により10℃,25℃,40℃における
粘着力を測定し、温度変化による粘着力(g)を
調べた。 その結果を第1表に示す。数値は10回測定した
結果の平均値を示す。
The present invention relates to a patch, and more particularly to a patch containing a large amount of salicylic acid and used for treating corns, warts, and the like. The manufacture of patches by blending a keratin softener such as salicylic acid with a bandage base made of raw rubber or resins is also described in the 9th edition of the Japanese Pharmacopoeia, and is widely used. However, this type of plaster containing salicylic acid in the base has a large proportion of natural products such as crude rubber and rosin, and therefore does not release salicylic acid well. Poor stability over time. Adhesion strength fluctuates greatly due to temperature changes. When applied, body temperature causes the paste to flow. (In other words, healthy skin other than the affected area will also be affected by the effects of saliceric acid.) When applied, skin irritation often occurs. The quality varies widely. There were drawbacks such as: An object of the present invention is to provide a patch for treating corns, warts, etc., which overcomes these drawbacks and contains a large amount of salicylic acid. The patch of the present invention comprises 5 to 30% by weight of styrene-isoprene-styrene teleblock copolymer resin, 10 to 40% by weight of alicyclic saturated hydrocarbon resin, 20 to 40% by weight of liquid paraffin, and salicylic acid. It is. In the present invention, the styrene-isoprene-styrene teleblock copolymer resin is defined as having a rubber structure consisting of a rubber phase formed by polyisoprene and a polystyrene domain formed by a polystyrene portion, and in which the rubber phase is composed of a polystyrene domain. It is therefore a crosslinked thermoplastic uncured rubber elastomer. Various grades of this are commercially available, including Califrex TR1107 (manufactured by Ciel Chemical Co., Ltd.).
If the amount is out of the above range, the paste will become hard and its adhesion to the skin will decrease. Conventionally, natural resins such as rosin resin and dammar have been used to improve the adhesiveness of the plaster to the skin, but these resins are not preferred as they cause the aforementioned disadvantageous properties of the plaster. do not have. The alicyclic saturated hydrocarbon resin of the present invention is not compatible with the polystyrene domain phase of the styrene-isoprene-styrene teleblock copolymer, but is compatible with the rubber phase of the styrene-isoprene-styrene teleblock copolymer. It is used to improve the adhesion of plasters containing teleblock copolymers to the skin. Various grades are also commercially available, but Alcon P-100 (manufactured by Arakawa Chemical Co., Ltd.) is preferred; if the amount is outside the above range, the paste becomes hard and its adhesion to the skin decreases. The liquid paraffin listed in the 9th edition of the Japanese Pharmacopoeia is used, but if the amount is less than 20% by weight, the paste will become hard and its adhesion to the skin will decrease;
Exceeding this range causes leaching of liquid paraffin from the plaster. The amount of salicylic acid blended may range from 20% by weight to around 50% by weight, which is the upper limit of the usual dosage for this type of patch, but from the relationship of the ingredients and their blending ratio, it is preferably 20 to 40% by weight. More preferably 30
~40% by weight. As the amount exceeds 50% by weight, the paste becomes harder and its adhesion to the skin decreases, and when it is less than 20% by weight, the medicinal efficacy is insufficient. In order to improve the permeability of salicylic acid into the skin, it is possible to use urea in an amount of about 10% of the amount of salicylic acid. In addition, if necessary, anti-aging agents such as BHT (dibutylhydroxylene) and reinforcing fillers may be added to an extent that does not destroy the gel-like properties of the paste. The adhesive patch of the present invention can be produced, for example, by the following method. That is, liquid paraffin is previously dissolved in a styrene-isoprene-styrene teleblock copolymer resin, and this melt is uniformly kneaded with an alicyclic saturated hydrocarbon resin and an antioxidant using a kneader or the like. This kneaded product is kept at about 60°C, and salicylic acid and urea are further kneaded and dispersed in about 100% to prepare a paste. As shown in Figure 1, a pad with this plaster applied to its center is placed on the adhesive surface of an adhesive support,
The adhesive patch of the present invention can be manufactured by covering the entire adhesive surface including the pad with a release piece. Adhesive supports are manufactured in the same manner as conventional adhesive bandages. The adhesive patch of the present invention not only significantly improves the above-mentioned disadvantageous properties of conventional adhesive plasters using natural resins. Although it contains a much larger amount of drug than ordinary anti-inflammatory and analgesic patches, it has excellent stability over time, self-adhesiveness, and adhesion to the skin, making it extremely effective in treating corns and warts. Next, the present invention will be specifically explained with reference to Examples showing production examples of the patch of the present invention and test examples showing various excellent properties of the patch of the present invention. Example 1 30 parts of liquid paraffin was added to Cauliflex TR1107.
(manufactured by Ciel Kagaku Co., Ltd., styrene-isoprene-styrene teleblock copolymer resin) After dissolving in advance 10 parts of BHT and alcohol P
−100 [manufactured by Arakawa Chemical Co., Ltd., alicyclic saturated hydrocarbon resin]
It was uniformly kneaded with 30 parts using a kneader kneader. While maintaining the kneaded product at 60° C. and kneading it, 50 parts of salicylic acid and 5 parts of urea were added and uniformly dispersed to prepare a paste. A patch is applied to the center of the pad, the pad is placed on the adhesive surface of a commonly used adhesive support, and the entire adhesive surface, including the pad, is covered with a release strip to form a patch as shown in Figure 1. was manufactured. Example 2 Califlex TR1107 15 parts, Alcon P-
100 30 parts, liquid paraffin 20 parts, salicylic acid 30 parts
1 part of urea, and 1 part of BHT were treated according to Example 1 to produce a patch. Test example 1 Raw rubber RSS No. 1 (manufactured by BATO) 14 parts, rosin ester [manufactured by Arakawa Chemical Co., Ltd.] 4 parts, polybutene 300H
[Manufactured by Idemitsu Petrochemical Co., Ltd.] 22 parts, lanolin 12 parts, salicylic acid 50 parts, urea 5 parts, and BHT 1 part were treated according to Example 1 to produce a patch as a control. The patch preparations produced in Examples 1 and 2 (hereinafter referred to as A and B, respectively) and the control patch preparation (hereinafter referred to as C) were used to remove salicylic acid from the plaster by the method described below. Changes in release amount over time were measured. The results are shown in FIG. (Measurement method) Weigh out 500 mg of pastes A, B and C into a sheet with a thickness of about 1 mm, add this to 500 ml of purified water, stir with a stirrer while keeping it at 25°C, and add it at regular intervals. The solution is sampled and the amount of salicylic acid eluted into the water is determined by ultraviolet absorption measurement. Test Example 2 The plasters A, B, and C prepared in Test Example 1 were uniformly applied to a cloth to prepare a sample piece with a width of 1 cm. For this sample piece, the plaster surfaces were pasted together,
Cohesive failure rate 200mm/min, failure temperature 40℃, relative humidity using Uejima Seisakusho UF type tensile tester with thermostatic chamber.
A constant speed T-type cohesive failure test was conducted at 75% to measure the change in cohesive force of the plaster over time, and the stability over time was investigated. The results are shown in FIG. Test Example 3 The sample pieces prepared in Test Example 2 were tested at a constant speed in accordance with the bandage adhesive force test described in the 9th revised Japanese Pharmacopoeia, using a Uejima Seisakusho UF type thermostat tensile tester.
Adhesive strength was measured at 10°C, 25°C, and 40°C by a 180° peel test, and the adhesive strength (g) due to temperature change was investigated. The results are shown in Table 1. The numerical value indicates the average value of the results of 10 measurements.

【表】 試験例 4 試験例1で調製したA,BおよびCの膏体を布
に厚さ約20/100m/mに均一に塗布し1cm×2
cmの試料片を調製した。この試料片を40℃恒温槽
中にいれて、塗布した膏体の流動状況について経
時的な変化を目視により観察し4段階にて評価し
た。 その結果を第2表に示す。
[Table] Test Example 4 The plasters A, B, and C prepared in Test Example 1 were uniformly applied to a cloth to a thickness of approximately 20/100 m/m, and 1 cm x 2
cm sample pieces were prepared. This sample piece was placed in a constant temperature bath at 40°C, and changes in the fluidity of the applied plaster over time were visually observed and evaluated on a four-level scale. The results are shown in Table 2.

【表】【table】 【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明の実施態様の一例を示す貼付
薬の斜視図である。第2図は、本発明の貼付薬の
膏体からのサリチル酸の放出量の経時変化を示す
グラフである。第3図は、本発明の貼付薬の膏体
の凝集力の経時変化を示すグラフである。第1図
において、1はパツド,2は膏体,3は剥離片,
4は支持体粘着面,5は支持体を示す。第2図お
よび第3図において、AおよびBはそれぞれ前記
実施例1および同2で調製した粘付薬を示し、C
は前記試験例1で調製した貼付薬を示す。
FIG. 1 is a perspective view of a patch showing an example of an embodiment of the present invention. FIG. 2 is a graph showing changes over time in the amount of salicylic acid released from the adhesive patch of the present invention. FIG. 3 is a graph showing the change over time in the cohesive force of the patch of the present invention. In Figure 1, 1 is a pad, 2 is a plaster, 3 is a peeling piece,
4 indicates the adhesive surface of the support, and 5 indicates the support. In FIGS. 2 and 3, A and B represent the adhesives prepared in Examples 1 and 2, respectively, and C
indicates the patch prepared in Test Example 1 above.

Claims (1)

【特許請求の範囲】[Claims] 1 スチレン−イソプレン−スチレン・テレブロ
ツク共重合体樹脂5〜30重量%、脂環族飽和炭化
水素樹脂10〜40重量%、流動パラフイン20〜40重
量%およびサリチル酸からなる貼付薬
1. Patch consisting of 5-30% by weight of styrene-isoprene-styrene teleblock copolymer resin, 10-40% by weight of alicyclic saturated hydrocarbon resin, 20-40% by weight of liquid paraffin, and salicylic acid.
JP56105019A 1981-07-07 1981-07-07 Plaster Granted JPS588011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56105019A JPS588011A (en) 1981-07-07 1981-07-07 Plaster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56105019A JPS588011A (en) 1981-07-07 1981-07-07 Plaster

Publications (2)

Publication Number Publication Date
JPS588011A JPS588011A (en) 1983-01-18
JPH045646B2 true JPH045646B2 (en) 1992-02-03

Family

ID=14396343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56105019A Granted JPS588011A (en) 1981-07-07 1981-07-07 Plaster

Country Status (1)

Country Link
JP (1) JPS588011A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2572763B2 (en) * 1987-04-02 1997-01-16 帝國製薬株式会社 Etofenamat-containing patch
US5286720A (en) * 1992-07-16 1994-02-15 Solarcare Technologies Corporation Compositions and methods for topical treatment of skin lesions
DE19837764C1 (en) * 1998-08-20 2000-03-16 Lohmann Therapie Syst Lts Process for producing adhesive die-cuts from an endless web and die-cut produced according to the method
US6006697A (en) * 1999-06-16 1999-12-28 Sullwold; Thomas System and method for dehorning cattle

Also Published As

Publication number Publication date
JPS588011A (en) 1983-01-18

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