JP2011127251A - Method for sustained releasing pharmaceutical agent - Google Patents

Method for sustained releasing pharmaceutical agent Download PDF

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JP2011127251A
JP2011127251A JP2009286726A JP2009286726A JP2011127251A JP 2011127251 A JP2011127251 A JP 2011127251A JP 2009286726 A JP2009286726 A JP 2009286726A JP 2009286726 A JP2009286726 A JP 2009286726A JP 2011127251 A JP2011127251 A JP 2011127251A
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drug
ppm
water
sustained release
fabric
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Masaya Uehara
正也 上原
Junichi Yasumaru
純一 安丸
Takeshi Sakata
豪 坂田
Akira Shiraki
明 白木
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Osaka Kasei Co Ltd
Kansai Coke and Chemicals Co Ltd
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Osaka Kasei Co Ltd
Kansai Coke and Chemicals Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for capable of controlling the sustained release of a pharmaceutical agent more easily in the method for sustained-releasing the pharmaceutical agent by using fibers. <P>SOLUTION: The method for sustained-releasing the pharmaceutical agent by attaching the pharmaceutical agent on cellulose fibers is characterized by, if the pharmaceutical agent is hydrophilic, taking the degree of acetylation of the cellulose fibers as ≤30%, and if the pharmaceutical agent is hydrophobic, taking the degree of the acetylation as ≥50%. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、薬剤成分を長期間にわたって放出させる技術に関するものである。   The present invention relates to a technique for releasing a drug component over a long period of time.

抗菌性、忌避性、芳香性などを有する薬剤成分を長期間にわたって放出させる方法として、従来様々な技術が提案されている。   Various techniques have been proposed in the past as methods for releasing drug components having antibacterial properties, repellent properties, fragrances and the like over a long period of time.

このような薬剤を徐放させる技術の中には、繊維を用いた技術も提案されており、例えば、再生セルロース繊維、ヒノキチオール(hinokitiol)とから成る抗菌性、防虫性に優れた断熱材において、担体(carrier)を併用し、前記ヒノキチオールの諸特性を持続させる方法(特許文献1(請求項1、段落0026)参照);繊維材料を、界面活性剤で酢酸α−トコフェノールを水に乳化させた溶液で処理し、人体の皮膚の表面に存在する皮脂等の油分により薬剤を徐放出する方法(特許文献2(請求項1、段落0034)参照);繊維表面から中空部まで貫通溝を有する繊維形成用ポリマーからなる中空繊維の中空部に、マイクロカプセルに内包または無機系多孔質マイクロカプセルに吸着した香料を付着させ、香料を徐放する方法(特許文献3(請求項1〜3、段落0037)参照);単糸の太さが7〜150μm、強度が1〜7g/デニール、中空率が3〜60%の中空繊維の中空部に、耐溶媒性を有する薬物を含有させ、繊維の物性を制御することで薬物を徐放させる方法(特許文献4(請求項1、段落0027〜0031)参照);高吸水性ポリマーに薬物を保持させて、患部において滲出液などを吸収することで薬物を放出させる方法(特許文献5(請求項1、段落0016、0017)参照);アルキル系樹脂及びフルオロアルキル系樹脂をそれぞれ少なくとも1種含有する処理液でもってセルロース系繊維を処理した後、このように処理した前記セルロース系繊維に機能性オイルを付与し機能性オイルを徐放させる方法(特許文献6(請求項1、段落0033)参照);などが提案されている。   Among such technologies for sustained release of drugs, technologies using fibers have also been proposed. For example, in a heat insulating material excellent in antibacterial and insecticidal properties composed of regenerated cellulose fibers and hinokitiol, A method of maintaining the characteristics of the hinokitiol in combination with a carrier (see Patent Document 1 (Claim 1, Paragraph 0026)); α-tocophenol acetate is emulsified in water with a surfactant. A method of slowly releasing a drug with oil such as sebum present on the surface of human skin (see Patent Document 2 (Claim 1, paragraph 0034)); having a through groove from the fiber surface to the hollow part A method in which a perfume encapsulated in microcapsules or adsorbed on inorganic porous microcapsules is attached to hollow portions of hollow fibers made of a fiber-forming polymer, and the perfume is released slowly (Patent Document 3) (Refer to Claims 1-3, Paragraph 0037)); It has solvent resistance in the hollow part of the hollow fiber whose thickness of a single yarn is 7-150 micrometers, an intensity | strength is 1-7 g / denier, and a hollow rate is 3-60%. A method of containing a drug and controlling the physical properties of the fiber to release the drug slowly (see Patent Document 4 (Claim 1, paragraphs 0027 to 0031)); causing the superabsorbent polymer to hold the drug and exuding the affected area A method of releasing a drug by absorbing a liquid (see Patent Document 5 (Claim 1, paragraphs 0016, 0017)); a cellulose-based treatment liquid containing at least one alkyl-based resin and fluoroalkyl-based resin. A method of applying functional oil to the cellulosic fiber thus treated after the fiber has been treated to release the functional oil slowly (see Patent Document 6 (Claim 1, Paragraph 0033)); There has been proposed.

特開2003−129581号公報JP 2003-129581 A 特開2002−309480号公報JP 2002-309480 A 特開平6−228880号公報JP-A-6-228880 特開平7−268772号公報Japanese Patent Laid-Open No. 7-268772 特開平5−246841号公報Japanese Patent Laid-Open No. 5-246841 特開2007−84937号公報JP 2007-84937 A

従来、薬剤を徐放する技術において繊維を用いる場合には、薬剤の徐放性を制御するために、担体を併用したり、繊維を複合化したりする必要があり、より安価で簡便な徐放性の制御方法が望まれていた。   Conventionally, when fibers are used in the technology for sustained release of drugs, in order to control the sustained release of the drug, it is necessary to use a carrier or to combine the fibers. A sex control method has been desired.

本発明は上記事情に鑑みてなされたものであり、繊維を用いた薬剤の徐放方法において、より容易に薬剤の徐放性を制御できる徐放方法を提供することを目的とする。   This invention is made | formed in view of the said situation, and it aims at providing the sustained release method which can control the sustained release property of a medicine more easily in the sustained release method of the medicine using a fiber.

上記課題を解決することができた本発明の薬剤の徐放方法は、セルロース繊維に薬剤を添着させる薬剤の徐放方法であって、前記薬剤が親水性薬剤であれば、セルロース繊維の酢化度を30%以下とし、前記薬剤が疎水性薬剤であれば、セルロース繊維の酢化度を50%以上とすることを特徴とする。繊維に添着させる薬剤の水との親和性に応じて、セルロース繊維の酢化度を調節することにより、セルロース繊維と薬剤と親和性を制御することができ、薬剤の徐放性を調節することができる。   The sustained release method of the drug of the present invention that has solved the above problems is a method of sustained release of a drug by adhering the drug to cellulose fibers, and if the drug is a hydrophilic drug, the cellulose fiber is acetylated. When the degree is 30% or less and the drug is a hydrophobic drug, the acetylation degree of the cellulose fiber is 50% or more. By adjusting the degree of acetylation of the cellulose fiber according to the affinity of the drug attached to the fiber with water, the affinity between the cellulose fiber and the drug can be controlled, and the sustained release of the drug can be adjusted. Can do.

前記親水性薬剤の水に対する溶解度(20℃)は10g/100g超であり、前記疎水性薬剤の水に対する溶解度(20℃)は1g/100g以下であることが好ましい。   The solubility of the hydrophilic drug in water (20 ° C.) is preferably more than 10 g / 100 g, and the solubility of the hydrophobic drug in water (20 ° C.) is preferably 1 g / 100 g or less.

前記セルロース繊維は、綿繊維または麻繊維が好適である。前記親水性薬剤および疎水性薬剤は、抗菌剤、抗ウィルス剤、殺菌剤および防腐剤よりなる群から選択される少なくとも1種が好適であり、特に、前記親水性薬剤としてはポリヘキサメチレンビグアナイド塩酸塩が好ましく、前記疎水性薬剤としてはチモールまたは3−ヨード−2−プロパルギルブチルカーバメートが好ましい。   The cellulose fiber is preferably cotton fiber or hemp fiber. The hydrophilic drug and the hydrophobic drug are preferably at least one selected from the group consisting of antibacterial agents, antiviral agents, bactericides, and preservatives. In particular, the hydrophilic drug is polyhexamethylene biguanide hydrochloride. Salts are preferred, and the hydrophobic drug is preferably thymol or 3-iodo-2-propargyl butyl carbamate.

本発明によれば、繊維の物性や、薬剤をマイクロカプセルに内包させるなどの作業を必要とせず、添着する薬剤に応じてセルロース繊維の酢化度を調製するだけで、容易に薬剤の徐放性を調整することができる。   According to the present invention, it is not necessary to perform physical properties such as fiber properties or encapsulating the drug in a microcapsule, and it is possible to easily and slowly release the drug simply by adjusting the degree of acetylation of the cellulose fiber according to the drug to be attached. Sex can be adjusted.

試験例1の溶出試験回数と溶出濃度の関係を示す図である。It is a figure which shows the relationship between the frequency | count of the elution test of Test Example 1, and elution density | concentration. 試験例2,3の溶出試験回数と溶出濃度の関係を示す図である。It is a figure which shows the relationship between the elution test frequency of Test Examples 2 and 3, and an elution density | concentration.

本発明の薬剤の徐放方法は、セルロース繊維に薬剤を添着させる薬剤の徐放方法であって、前記薬剤が親水性薬剤であれば、セルロース繊維の酢化度を30%以下とし、前記薬剤が疎水性薬剤であれば、セルロース繊維の酢化度を50%以上とすることを特徴とする。繊維に添着させる薬剤の水に対する親和性に応じて、セルロース繊維の酢化度を調節することにより、セルロース繊維と薬剤と親和性を制御することができ、薬剤の徐放性を調節することができる。   The method for sustained release of a drug according to the present invention is a method for sustained release of a drug in which a drug is attached to cellulose fibers, and if the drug is a hydrophilic drug, the acetylation degree of the cellulose fiber is 30% or less, and the drug If is a hydrophobic drug, the acetylation degree of the cellulose fiber is 50% or more. By adjusting the degree of acetylation of the cellulose fiber according to the affinity of the drug attached to the fiber to water, the affinity between the cellulose fiber and the drug can be controlled, and the sustained release of the drug can be adjusted. it can.

前記セルロース繊維としては、綿、麻などの植物繊維;古紙、段ボール、木材廃材などを再生処理して得られる再生セルロース繊維;などが挙げられる。これらのセルロース繊維は単独で使用してもよいし、2種以上を併用してもよい。   Examples of the cellulose fiber include plant fibers such as cotton and hemp; regenerated cellulose fibers obtained by regenerating waste paper, cardboard, wood waste, and the like. These cellulose fibers may be used alone or in combination of two or more.

前記セルロース繊維の酢化度を調節する方法は、特に限定されず、従来用いられている方法を採用すればよい。例えば、セルロース繊維が有する水酸基のほぼ全てを無水酢酸によりアセチル化しセルローストリアセテートとした後、得られたセルローストリアセテートを水に浸漬し、エステル基を部分的に加水分解することで所望の酢化度に調節することができる。なお、セルロース繊維は、種々の酢化度に調節されたものが市販されているため、これらを使用してもよい。   The method for adjusting the acetylation degree of the cellulose fiber is not particularly limited, and a conventionally used method may be adopted. For example, after acetylating almost all hydroxyl groups of cellulose fiber with acetic anhydride to make cellulose triacetate, the cellulose triacetate obtained is immersed in water, and the ester groups are partially hydrolyzed to achieve the desired degree of acetylation. Can be adjusted. In addition, since the cellulose fiber adjusted to various acetylation degrees is marketed, you may use these.

セルロース繊維に添着する薬剤が親水性薬剤の場合には、前記セルロース繊維の酢化度は30%以下とし、好ましくは20%以下、より好ましくは10%以下である。一方、セルロース繊維に添着する薬剤が疎水性薬剤の場合には、前記セルロース繊維の酢化度は50%以上とし、好ましくは55%以上、より好ましくは60%以上である。セルロース繊維の酢化度を前記範囲に調節することにより、薬剤との親和性を高めることができ、薬剤の徐放性をより高めることができる。なお、セルロース繊維の酢化度は、JIS L1013(1999)A法により測定すればよい。   When the chemical | medical agent attached to a cellulose fiber is a hydrophilic chemical | medical agent, the acetylation degree of the said cellulose fiber shall be 30% or less, Preferably it is 20% or less, More preferably, it is 10% or less. On the other hand, when the chemical | medical agent attached to a cellulose fiber is a hydrophobic chemical | medical agent, the acetylation degree of the said cellulose fiber shall be 50% or more, Preferably it is 55% or more, More preferably, it is 60% or more. By adjusting the acetylation degree of the cellulose fiber to the above range, the affinity with the drug can be increased, and the sustained release property of the drug can be further increased. In addition, what is necessary is just to measure the acetylation degree of a cellulose fiber by JISL1013 (1999) A method.

前記薬剤は、特に限定されず、セルロール繊維に添着し得るものであれば使用できる。前記薬剤としては、抗菌剤、抗ウィルス剤、殺菌剤、防腐剤などが挙げられる。   The said chemical | medical agent is not specifically limited, If it can be attached to a cellulose fiber, it can be used. Examples of the drug include antibacterial agents, antiviral agents, bactericides, and preservatives.

本発明において、親水性薬剤とは水に対する溶解度(20℃)が3.3g/100g超の薬剤を指し、疎水性薬剤とは水に対する溶解度(20℃)が3.3g/100g以下の薬剤を指す。なお、薬剤の水に対する溶解度(20℃)は、第十五改正日本薬局方 通則29に記載の方法で確認することができる。具体的には、薬剤粉末を水(20℃)に入れ、5分ごとに強く30秒間振り混ぜるとき、30分以内に溶ける質量を確認すればよい。   In the present invention, a hydrophilic drug refers to a drug having a solubility in water (20 ° C.) of more than 3.3 g / 100 g, and a hydrophobic drug refers to a drug having a solubility in water (20 ° C.) of 3.3 g / 100 g or less. Point to. The solubility of the drug in water (20 ° C.) can be confirmed by the method described in the 15th revision Japanese Pharmacopoeia General Rules 29. Specifically, when the drug powder is put into water (20 ° C.) and shaken strongly every 5 minutes for 30 seconds, the mass dissolved within 30 minutes may be confirmed.

前記親水性薬剤は、水に対する溶解度(20℃)が10g/100g超が好ましく、100g/100g超がより好ましい。また、前記疎水性薬剤の水に対する溶解度(20℃)は1g/100g以下が好ましく、0.1g/100g以下がより好ましい。親水性薬剤または疎水性薬剤の溶解度が前記範囲であれば、セルロース繊維との親和性を高めることができ、薬剤の徐放性をより高めることができる。   The hydrophilic drug has a solubility in water (20 ° C.) of preferably more than 10 g / 100 g, more preferably more than 100 g / 100 g. Further, the solubility (20 ° C.) of the hydrophobic drug in water is preferably 1 g / 100 g or less, and more preferably 0.1 g / 100 g or less. When the solubility of the hydrophilic drug or the hydrophobic drug is within the above range, the affinity with the cellulose fiber can be increased, and the sustained release property of the drug can be further increased.

前記親水性薬剤の具体例としては、例えば、ポリヘキサメチレンビグアナイド塩酸塩などのビグアナイド系化合物などが挙げられる。前記疎水性薬剤としては、例えば、チモールなどのフェノール系化合物;3−ヨード−2−プロパルギルブチルカーバメートなどのカーバメート系化合物;などが挙げられる。   Specific examples of the hydrophilic drug include biguanide compounds such as polyhexamethylene biguanide hydrochloride. Examples of the hydrophobic drug include phenol compounds such as thymol; carbamate compounds such as 3-iodo-2-propargyl butyl carbamate;

前記セルロース繊維に薬剤を添着させる方法は、特に限定されない。例えば、薬剤を水、有機溶媒、またはこれらの混合溶液に溶解させ、この薬剤溶液にセルロース繊維を浸漬させた後、セルロース繊維を取り出し、水および有機溶媒を乾燥除去すればよい。   The method for attaching the drug to the cellulose fiber is not particularly limited. For example, after dissolving a chemical | medical agent in water, an organic solvent, or these mixed solutions, and making a cellulose fiber immerse in this chemical | medical agent solution, a cellulose fiber is taken out and water and an organic solvent may be dried and removed.

前記有機溶媒としては、メタノール、エタノールなどのアルコール類;酢酸エチルなどのエステル類;アセトン、メチルエチルケトンなどのケトン類;トルエンなどを用いることができる。セルロース繊維を浸漬する薬剤溶液の濃度ならびに浸漬時間および浸漬温度は、用いる薬剤の種類や、繊維に添着させる薬剤量に応じて調節すればよい。なお、セルロース繊維は薬剤溶液に浸漬する前に、十分に乾燥させ、繊維が吸収している水分を除去しておくことが好ましい。   Examples of the organic solvent include alcohols such as methanol and ethanol; esters such as ethyl acetate; ketones such as acetone and methyl ethyl ketone; toluene and the like. What is necessary is just to adjust the density | concentration of the chemical | medical agent solution which immerses a cellulose fiber, immersion time, and immersion temperature according to the kind of chemical | medical agent to be used, and the chemical | medical agent amount attached to a fiber. In addition, before immersing a cellulose fiber in a chemical | medical solution, it is preferable to fully dry, and the water | moisture content which the fiber has absorbed is removed.

本発明の薬剤の徐放方法は、薬剤をセルロース繊維に添着させることにより徐放させるものであるが、徐放の態様としては、空気中への揮散、水中への溶出などが挙げられる。   The method for sustained release of the drug of the present invention is to release the drug by attaching it to cellulose fibers. Examples of the sustained release include volatilization in the air and elution in water.

本発明の薬剤の徐放方法を採用する具体例としては、タンク内に充填された水に対する徐放が挙げられる。特に、本発明はタンクに随時供給される水に対して持続的な徐放が可能であるため、水噴霧式の加湿器に備えられる噴霧水タンクに好適に使用できる。すなわち、水噴霧式加湿器の噴霧水タンク内に、薬剤を添着させたセルロース繊維を取り付け、随時供給される水に、薬剤を徐放する態様が好適である。   Specific examples of employing the method for sustained release of a drug of the present invention include sustained release with respect to water filled in a tank. In particular, the present invention can be used for a spray water tank provided in a water spray type humidifier because it can be sustainedly released to water supplied to the tank as needed. That is, a mode in which cellulose fibers impregnated with a drug are attached to a spray water tank of a water spray type humidifier, and the drug is gradually released into water supplied as needed.

水噴霧式加湿器の噴霧水タンクに採用すれば、随時供給される水に対して長期間にわたって薬剤を一定濃度で徐放できる。そのため、噴霧する前の水中に生存する細菌、ウィルス等の生育、活動を阻止することができ、噴霧水中への細菌、ウィルス等の混入を抑制する効果が長期にわたって持続する。また、水と薬剤を同時に噴霧できるため、室内の空気中に生存する細菌、ウィルス等の生育、活動も長期にわたって阻止できる。さらに、本発明では、タンクに供給された水に対して薬剤が自動的に徐放されるため、水を供給するたびに薬剤を添加する必要がなく、作業が容易となる。   If it is employed in a spray water tank of a water spray type humidifier, the drug can be released at a constant concentration over a long period of time with respect to the water supplied as needed. Therefore, the growth and activity of bacteria, viruses and the like that survive in the water before spraying can be prevented, and the effect of suppressing the contamination of bacteria, viruses and the like in the sprayed water lasts for a long time. Moreover, since water and a chemical | medical agent can be sprayed simultaneously, the growth and activity of bacteria, viruses, etc. which survive in the indoor air can be prevented for a long time. Furthermore, in the present invention, since the medicine is automatically and gradually released with respect to the water supplied to the tank, it is not necessary to add the medicine every time water is supplied, and the operation becomes easy.

以下に実施例を挙げて本発明をより具体的に説明するが、本発明は、下記実施例によって限定されるものではなく、前・後記の趣旨に適合しうる範囲で適宜変更して実施することも可能であり、それらはいずれも本発明の技術的範囲に包含される。   The present invention will be described more specifically with reference to the following examples. However, the present invention is not limited to the following examples, and may be appropriately modified and implemented within a range that can meet the purpose described above and below. All of which are within the scope of the present invention.

試験例1−1
綿繊維(酢化度5%以下)からなる布帛(KBセーレン社製(綿100質量%))2.07gをシャーレに入れ、125℃に設定した恒温槽中で2時間乾燥させ、綿布帛が吸収していた水分を除去した。乾燥後の綿布帛は1.99gであった。
Test Example 1-1
A fabric made of cotton fibers (degree of acetylation of 5% or less) (KB Selen (cotton 100% by mass)) 2.07 g was placed in a petri dish and dried in a thermostat set at 125 ° C. for 2 hours. The absorbed moisture was removed. The cotton fabric after drying was 1.99 g.

乾燥後、綿布帛を入れたシャーレに、濃度10000ppm(1質量%)のポリヘキサメチレンビグアナイド塩酸塩(以下、「PHMB」)水溶液100mlを添加し、綿布帛を完全に浸漬させた状態で1時間静置した。なお、PHMBは親水性薬剤であり、水に対する溶解度(20℃)が10g/100g以上である。その後、綿布帛を取り出し別のシャーレに入れて、125℃の恒温槽中で2時間乾燥させた。乾燥後の綿布帛には0.04gのPHMBが添着していた。   After drying, 100 ml of an aqueous solution of polyhexamethylene biguanide hydrochloride (hereinafter referred to as “PHMB”) having a concentration of 10000 ppm (1% by mass) is added to the petri dish containing the cotton fabric, and the cotton fabric is completely immersed for 1 hour. Left to stand. PHMB is a hydrophilic drug and has a solubility in water (20 ° C.) of 10 g / 100 g or more. Thereafter, the cotton fabric was taken out and placed in another petri dish and dried in a thermostatic bath at 125 ° C. for 2 hours. 0.04 g of PHMB was attached to the dried cotton fabric.

PHMB添着後の布帛を0.53g量り採ってサンプル瓶に入れた後、純水45mlを添加し、24時間後のPHMB溶出濃度を測定した。続いて、サンプル瓶中のPHMB溶出液を廃棄し、新たに純水45mlを添加して2回目の溶出試験を行った。同様の操作を行い、5回溶出試験を繰り返した。1回目から5回目までの溶出試験において、PHMBの溶出濃度は、それぞれ192ppm、18ppm、5ppm、2ppm、2ppmであった。なお、PHMB添着後の布帛0.53gに添着していたPHMBは10.4mgであり、5回の溶出試験で溶出したPHMBの総質量は9.9mgであった。   After weighing 0.53 g of the fabric after PHMB was put into a sample bottle, 45 ml of pure water was added, and the PHMB elution concentration after 24 hours was measured. Subsequently, the PHMB eluate in the sample bottle was discarded, and 45 ml of pure water was newly added to conduct a second elution test. The same operation was performed and the dissolution test was repeated 5 times. In the first to fifth elution tests, the elution concentrations of PHMB were 192 ppm, 18 ppm, 5 ppm, 2 ppm, and 2 ppm, respectively. The PHMB adhering to 0.53 g of the fabric after PHMB was 10.4 mg, and the total mass of PHMB eluted in the five dissolution tests was 9.9 mg.

試験例1−2
綿繊維からなる布帛を、麻繊維(酢化度5%以下)と綿繊維(酢化度5%以下)からなる布帛(帝国繊維社製(麻98質量%、綿2質量%))に変更したこと以外は試験例1−1と同様にして、繊維にPHMBを添着させた。乾燥後の布帛には0.03gのPHMBが添着していた。
Test Example 1-2
The cloth made of cotton fibers is changed to a cloth made of hemp fibers (acetylation degree 5% or less) and cotton fibers (acetylation degree 5% or less) (made by Teikoku Textile Co., Ltd. (98% hemp, 2% cotton)). Except for this, PHMB was attached to the fiber in the same manner as in Test Example 1-1. 0.03 g of PHMB was attached to the dried fabric.

PHMB添着後の布帛について、試験例1−1と同様に溶出試験を行った。1回目から5回目までの溶出試験において、PHMBの溶出濃度は、それぞれ83ppm、16ppm、7ppm、4ppm、5ppmであった。なお、PHMB添着後の布帛0.53gに添着していたPHMBは8.5mgであり、5回の溶出試験で溶出したPHMBの総質量は5.2mgであった。   About the fabric after PHMB attachment, the elution test was done like Test Example 1-1. In the first to fifth elution tests, the elution concentrations of PHMB were 83 ppm, 16 ppm, 7 ppm, 4 ppm, and 5 ppm, respectively. The PHMB attached to 0.53 g of the fabric after PHMB was 8.5 mg, and the total mass of PHMB eluted in the five dissolution tests was 5.2 mg.

試験例1−3
綿繊維からなる布帛を、酢酸セルロース繊維(酢化度60%以上)からなる布帛(三菱レイヨン社製(トリアセテート100質量%))に変更したこと以外は試験例1−1と同様にして、繊維にPHMBを添着させた。乾燥後の布帛には0.08gのPHMBが添着していた。
Test Example 1-3
A fiber made in the same manner as in Test Example 1-1 except that the cloth made of cotton fiber was changed to a cloth made of cellulose acetate fiber (acetylation degree of 60% or more) (manufactured by Mitsubishi Rayon Co., Ltd. (100% by mass of triacetate)). PHMB was attached to the. 0.08 g of PHMB was attached to the dried fabric.

PHMB添着後の布帛について、試験例1−1と同様に溶出試験を行った。1回目から5回目までの溶出試験において、PHMBの溶出濃度は、それぞれ420ppm、27ppm、2ppm、0.1ppm、0.1ppmであった。なお、PHMB添着後の布帛0.53gに添着していたPHMBは21.1mgであり、5回の溶出試験で溶出したPHMBの総質量は20.2mgであった。   About the fabric after PHMB attachment, the elution test was done like Test Example 1-1. In the first to fifth dissolution tests, the PHMB elution concentrations were 420 ppm, 27 ppm, 2 ppm, 0.1 ppm, and 0.1 ppm, respectively. The PHMB attached to 0.53 g of the fabric after PHMB was 21.1 mg, and the total mass of PHMB eluted in the five dissolution tests was 20.2 mg.

試験例2−1
酢酸セルロース繊維(酢化度60%以上)からなる布帛(三菱レイヨン社製(トリアセテート100質量%))2.00gをシャーレに入れ、125℃に設定した恒温槽中で2時間乾燥させ、布帛が吸収していた水分を除去した。乾燥後の布帛は1.93gであった。
Test Example 2-1
2.00 g of a fabric composed of cellulose acetate fibers (acetylation degree of 60% or more) (Mitsubishi Rayon Co., Ltd. (triacetate 100% by mass)) was placed in a petri dish and dried in a thermostatic bath set at 125 ° C. for 2 hours. The absorbed moisture was removed. The fabric after drying was 1.93 g.

乾燥後、布帛を入れたシャーレに、濃度10000ppm(1質量%)のチモール溶液(溶媒は、エタノール:水(体積比)=50:50)100mlを添加し、布帛を完全に浸漬させた状態で1時間静置した。なお、チモールは疎水性薬剤であり、水に対する溶解度(20℃)が0.1g/100g以下である。布帛を取り出し別のシャーレに入れて、排風ドラフト内で2時間風乾した。乾燥後の布帛には0.86gのチモールが添着していた。   After drying, 100 ml of a thymol solution (solvent is ethanol: water (volume ratio) = 50: 50) having a concentration of 10000 ppm (1 mass%) is added to the petri dish containing the fabric, and the fabric is completely immersed. Let stand for 1 hour. Thymol is a hydrophobic drug and has a water solubility (20 ° C.) of 0.1 g / 100 g or less. The fabric was taken out and placed in another petri dish and air-dried in an exhaust draft for 2 hours. 0.86 g of thymol was attached to the dried fabric.

チモール添着後の布帛を0.53g量り採ってサンプル瓶に入れた後、純水45mlを添加し、24時間後のチモール溶出濃度を測定した。続いて、サンプル瓶中のチモール溶出液を廃棄し、新たに純水45mlを添加して2回目の溶出試験を行った。同様の操作を行い、3回溶出試験を繰り返した。1回目から3回目までの溶出試験において、チモールの溶出濃度は、それぞれ25ppm、21ppm、17ppmであった。なお、チモール添着後の布帛0.53gに添着していたチモールは163.4mgであり、3回の溶出試験で溶出したチモールの総質量は2.8mgであった。   After weighing 0.53 g of the thymol-attached fabric into a sample bottle, 45 ml of pure water was added, and the thymol elution concentration after 24 hours was measured. Subsequently, the thymol eluate in the sample bottle was discarded, and 45 ml of pure water was newly added to conduct a second elution test. The same operation was performed and the dissolution test was repeated three times. In the first to third dissolution tests, the thymol elution concentrations were 25 ppm, 21 ppm, and 17 ppm, respectively. The amount of thymol attached to 0.53 g of the fabric after thymol attachment was 163.4 mg, and the total mass of thymol eluted in three elution tests was 2.8 mg.

試験例2−2
酢酸セルロースからなる布帛を、綿繊維(酢化度5%以下)からなる布帛(KBセーレン社製(綿100質量%))に変更したこと以外は試験例2−1と同様にして、繊維にチモールを添着させた。乾燥後の布帛には1.41gのチモールが添着していた。
Test Example 2-2
In the same manner as in Test Example 2-1, except that the fabric made of cellulose acetate was changed to a fabric made of cotton fibers (degree of acetylation of 5% or less) (KB Selen Co., Ltd. (100 mass% cotton)), Timor was attached. 1.41 g of thymol was attached to the dried fabric.

チモール添着後の布帛について、試験例2−1と同様に溶出試験を行った。1回目から3回目までの溶出試験において、チモールの溶出濃度は、それぞれ50ppm、2ppm、0.1ppmであった。なお、チモール添着後の布帛0.53gに添着していたチモールは219.8mgであり、3回の溶出試験で溶出したチモールの総質量は2.3mgであった。   About the fabric after thymol attachment, the elution test was done like Test Example 2-1. In the first to third dissolution tests, the thymol elution concentrations were 50 ppm, 2 ppm, and 0.1 ppm, respectively. In addition, the thymol attached to 0.53 g of the fabric after thymol attachment was 219.8 mg, and the total mass of thymol eluted in the three dissolution tests was 2.3 mg.

試験例3−1
酢酸セルロース繊維(酢化度60%以上)からなる布帛(三菱レイヨン社製(トリアセテート100質量%))2.04gをシャーレに入れ、125℃に設定した恒温槽中で2時間乾燥させ、布帛が吸収していた水分を除去した。乾燥後の布帛は1.92gであった。
Test Example 3-1
A fabric composed of cellulose acetate fibers (acetylation degree of 60% or more) (Mitsubishi Rayon Co., Ltd. (triacetate 100% by mass)) 2.04 g was put in a petri dish and dried in a thermostatic bath set at 125 ° C. for 2 hours. The absorbed moisture was removed. The fabric after drying was 1.92 g.

乾燥後、布帛を入れたシャーレに、濃度10000ppm(1質量%)の3−ヨード−2−プロパルギルブチルカーバメート(以下、「TPP」)溶液(溶媒は、エタノール:水(体積比)=50:50)100mlを添加し、布帛を完全に浸漬させた状態で1時間静置した。なお、TPPは疎水性薬剤であり、水に対する溶解度(20℃)が0.0156g/100g以下である。その後、布帛を取り出し別のシャーレに入れて、125℃の恒温槽中で2時間乾燥させた。乾燥後の布帛には0.20gのTPPが添着していた。   After drying, in a petri dish containing the fabric, a solution of 3-iodo-2-propargylbutyl carbamate (hereinafter “TPP”) having a concentration of 10,000 ppm (1% by mass) (the solvent is ethanol: water (volume ratio) = 50: 50). ) 100 ml was added and the fabric was allowed to stand for 1 hour in a completely immersed state. TPP is a hydrophobic drug and has a solubility in water (20 ° C.) of 0.0156 g / 100 g or less. Thereafter, the fabric was taken out and placed in another petri dish and dried in a thermostatic bath at 125 ° C. for 2 hours. 0.20 g of TPP was attached to the dried fabric.

TPP添着後の布帛を0.53g量り採ってサンプル瓶に入れた後、純水45mlを添加し、24時間後のTPP溶出濃度を測定した。続いて、サンプル瓶中のTPP溶出液を廃棄し、新たに純水45mlを添加して2回目の溶出試験を行った。同様の操作を行い、3回溶出試験を繰り返した。1回目から3回目までの溶出試験において、TPPの溶出濃度は、それぞれ172ppm、116ppm、86ppmであった。なお、TPP添着後の布帛0.53gに添着していたTPPは50mgであり、3回の溶出試験で溶出したTPPの総質量は16.8mgであった。   After weighing 0.53 g of the TPP-attached fabric into a sample bottle, 45 ml of pure water was added, and the TPP elution concentration after 24 hours was measured. Subsequently, the TPP eluate in the sample bottle was discarded, and 45 ml of pure water was newly added to conduct a second elution test. The same operation was performed and the dissolution test was repeated three times. In the first to third elution tests, the elution concentrations of TPP were 172 ppm, 116 ppm, and 86 ppm, respectively. The TPP attached to 0.53 g of the fabric after TPP attachment was 50 mg, and the total mass of TPP eluted in the three elution tests was 16.8 mg.

試験例3−2
酢酸セルロースからなる布帛を、綿繊維(酢化度5%以下)からなる布帛(KBセーレン社製(綿100質量%))に変更したこと以外は試験例3−1と同様にして、繊維にTPPを添着させた。乾燥後の布帛には0.18gのTPPが添着していた。
Test Example 3-2
In the same manner as in Test Example 3-1, except that the fabric made of cellulose acetate was changed to a fabric made of cotton fibers (degree of acetylation of 5% or less) (KB Selen Co., Ltd. (100 mass% cotton)), TPP was attached. 0.18 g of TPP was attached to the dried fabric.

TPP添着後の布帛について、試験例3−1と同様に溶出試験を行った。1回目から3回目までの溶出試験において、TPPの溶出濃度は、それぞれ713ppm、231ppm、26ppmであった。なお、TPP添着後の布帛0.53gに添着していたTPPは47.0mgであり、3回の溶出試験で溶出したTPPの総質量は43.7mgであった。   About the fabric after TPP attachment, the elution test was done like test example 3-1. In the dissolution tests from the first time to the third time, the elution concentrations of TPP were 713 ppm, 231 ppm, and 26 ppm, respectively. The TPP attached to 0.53 g of the fabric after TPP attachment was 47.0 mg, and the total mass of TPP eluted in the three elution tests was 43.7 mg.

各試験例の溶出試験結果を表1および表2にまとめて記載し、また、試験例1の溶出試験結果を図1に、試験例2,3の溶出試験結果を図2に示した。   The dissolution test results of each test example are collectively shown in Table 1 and Table 2, the dissolution test results of Test Example 1 are shown in FIG. 1, and the dissolution test results of Test Examples 2 and 3 are shown in FIG.

Figure 2011127251
Figure 2011127251

Figure 2011127251
Figure 2011127251

試験例1−1,1−2は、セルロース繊維の酢化度を30%以下に調節して、親水性薬剤であるPHMBを添着させた場合である。これらの場合、溶出試験回数が増加するのにつれてPHMB溶出濃度は低下しているが、5回目でも溶出濃度は2ppm(試験例1−1)、5ppm(試験例1−2)である。これに対して、試験例1−3は、セルロース繊維の酢化度を30%超に調節して、親水性薬剤であるPHMBを添着させた場合である。この場合、1回目の溶出試験ではPHMBの溶出濃度は419.8ppmと非常に高い値であるが、3回目で2.0ppmにまで低下し、5回目ではわずか0.10ppmであった。   Test Examples 1-1 and 1-2 are cases where PHMB, which is a hydrophilic drug, is attached by adjusting the degree of acetylation of cellulose fibers to 30% or less. In these cases, the PHMB elution concentration decreases as the number of elution tests increases, but the elution concentration is 2 ppm (Test Example 1-1) and 5 ppm (Test Example 1-2) even at the fifth time. On the other hand, Test Example 1-3 is a case where the degree of acetylation of the cellulose fiber was adjusted to more than 30% and PHMB, which is a hydrophilic drug, was attached. In this case, in the first elution test, the elution concentration of PHMB was 419.8 ppm, which was a very high value, but decreased to 2.0 ppm in the third time and only 0.10 ppm in the fifth time.

これらの結果から、親水性薬剤を添着させる場合において、セルロース繊維の酢化度を30%以下に調節することにより、親水性薬剤の徐放性がより高められていることがわかる。   From these results, it is understood that when the hydrophilic drug is added, the sustained release property of the hydrophilic drug is further improved by adjusting the acetylation degree of the cellulose fiber to 30% or less.

試験例2−1,3−1は、セルロース繊維の酢化度を50%以上に調節して、疎水性薬剤であるチモールまたはTPPを添着させた場合である。これらの場合、溶出試験回数が増加するのにつれて溶出濃度は低下しているが、3回目でもチモール溶出濃度17ppm、TPP溶出濃度86ppmである。これに対して、試験例2−2,3−2は、セルロース繊維の酢化度を50%未満に調節して、疎水性薬剤であるチモールまたはTPPを添着させた場合である。この場合、1回目の溶出試験ではチモール溶出濃度50ppm、TPP溶出濃度713ppmと非常に高い値であるが、3回目ではチモール溶出濃度0.1ppm、TPP溶出濃度26ppmにまで低下している。   Test Examples 2-1 and 3-1 are cases in which the acetylation degree of cellulose fibers is adjusted to 50% or more and thymol or TPP which is a hydrophobic drug is attached. In these cases, the elution concentration decreases as the number of elution tests increases, but the thymol elution concentration is 17 ppm and the TPP elution concentration is 86 ppm even at the third time. On the other hand, Test Examples 2-2 and 3-2 are cases where the acetylation degree of the cellulose fiber is adjusted to less than 50% and thymol or TPP which is a hydrophobic drug is attached. In this case, in the first elution test, the thymol elution concentration is 50 ppm and the TPP elution concentration is 713 ppm, which are very high values, but in the third time, the thymol elution concentration is 0.1 ppm and the TPP elution concentration is 26 ppm.

これらの結果から、疎水性薬剤を添着させる場合において、セルロース繊維の酢化度を50%以上に調節することにより、疎水性薬剤の徐放性がより高められていることがわかる。   From these results, it can be seen that when the hydrophobic drug is added, the sustained release of the hydrophobic drug is further improved by adjusting the acetylation degree of the cellulose fiber to 50% or more.

本発明は、抗菌剤、抗ウィルス剤などの薬剤成分を長期間にわたって放出させるものであり、例えば、タンク中の水へと薬剤を徐々に溶出させることに利用できる。   The present invention releases drug components such as antibacterial agents and antiviral agents over a long period of time, and can be used, for example, to gradually elute drugs into water in a tank.

Claims (5)

セルロース繊維に薬剤を添着させる薬剤の徐放方法であって、
前記薬剤が親水性薬剤であれば、前記セルロース繊維の酢化度を30%以下とし、前記薬剤が疎水性薬剤であれば、前記セルロース繊維の酢化度を50%以上とすることを特徴とする薬剤の徐放方法。
A method for sustained release of a drug by attaching the drug to cellulose fibers,
If the drug is a hydrophilic drug, the acetylation degree of the cellulose fiber is 30% or less, and if the drug is a hydrophobic drug, the acetylation degree of the cellulose fiber is 50% or more. Method for sustained release of drugs.
前記親水性薬剤の水に対する溶解度(20℃)が10g/100g超であり、前記疎水性薬剤の水に対する溶解度(20℃)が1g/100g以下である請求項1に記載の薬剤の徐放方法。   The method for sustained release of a drug according to claim 1, wherein the solubility of the hydrophilic drug in water (20 ° C) is more than 10 g / 100 g, and the solubility of the hydrophobic drug in water (20 ° C) is 1 g / 100 g or less. . 前記セルロース繊維が、綿繊維または麻繊維である請求項1または2に記載の薬剤の徐放方法。   The method for sustained release of a medicine according to claim 1 or 2, wherein the cellulose fiber is cotton fiber or hemp fiber. 前記親水性薬剤および疎水性薬剤が、抗菌剤、抗ウィルス剤、殺菌剤および防腐剤よりなる群から選択される少なくとも1種である請求項1〜3のいずれか一項に記載の薬剤の徐放方法。   The said hydrophilic chemical | medical agent and hydrophobic chemical | medical agent are at least 1 sort (s) selected from the group which consists of an antibacterial agent, an antiviral agent, a bactericidal agent, and antiseptic | preservative, The slowdown of the chemical | medical agent as described in any one of Claims 1-3. Release method. 前記親水性薬剤がポリヘキサメチレンビグアナイド塩酸塩であり、前記疎水性薬剤がチモールまたは3−ヨード−2−プロパルギルブチルカーバメートであることを特徴とする請求項1〜4のいずれか一項に記載の薬剤の徐放方法。   The hydrophilic drug is polyhexamethylene biguanide hydrochloride, and the hydrophobic drug is thymol or 3-iodo-2-propargyl butyl carbamate. Method for sustained release of drug.
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