JP5275084B2 - desiccant - Google Patents
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- JP5275084B2 JP5275084B2 JP2009044692A JP2009044692A JP5275084B2 JP 5275084 B2 JP5275084 B2 JP 5275084B2 JP 2009044692 A JP2009044692 A JP 2009044692A JP 2009044692 A JP2009044692 A JP 2009044692A JP 5275084 B2 JP5275084 B2 JP 5275084B2
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Abstract
Description
本発明は、精密機器、機械部品、電子部品、衣服、ガラス製品等の保管・梱包輸送中において湿気による錆び、カビ、結露の発生を防ぐための乾燥剤に関する。 The present invention relates to a desiccant for preventing the generation of rust, mold and condensation due to moisture during storage / packaging transportation of precision equipment, machine parts, electronic parts, clothes, glass products and the like.
従来から、家庭用および産業用の乾燥剤として、塩化カルシウム、塩化マグネシウム等の潮解性無機塩が使用されている。しかし、潮解性無機塩は吸湿後液状化し易く、乾燥剤の容器から漏出して周囲を汚す等取扱上問題があった。そこで、潮解性無機塩の液状化を防止してその漏出を防ぐために、ゲル化剤と併用する方法が提案されている。例えば、特許文献１では、潮解性無機化合物の粉末または粒状物とカルボキシメチルセルロース等の親水性ポリマーの粉末または粒状物とを機械的に混合してなる除湿剤が開示されている。
また、特許文献２では、潮解性塩類とアクリルアミド系重合体との混合物を主剤とする乾燥剤が開示されている。
更に、特許文献３では、こんにゃく芋の粉末と塩化カルシウムからなる除湿剤（請求項４等）が開示されている。
Conventionally, deliquescent inorganic salts such as calcium chloride and magnesium chloride have been used as desiccants for household and industrial use. However, the deliquescent inorganic salt is liable to be liquefied after moisture absorption, causing problems in handling such as leakage from the desiccant container and soiling the surroundings. Therefore, in order to prevent liquefaction of the deliquescent inorganic salt and prevent its leakage, a method of using it together with a gelling agent has been proposed. For example, Patent Document 1 discloses a dehumidifying agent obtained by mechanically mixing a powder or granule of a deliquescent inorganic compound and a powder or granule of a hydrophilic polymer such as carboxymethyl cellulose.
Patent Document 2 discloses a desiccant mainly composed of a mixture of a deliquescent salt and an acrylamide polymer.
Furthermore, Patent Document 3 discloses a dehumidifying agent comprising konjac powder and calcium chloride (claim 4).
しかし、カルボキシメチルセルロースはゲル化速度が遅く、吸湿の初期には保水できない場合があり、包材からの漏水により被乾燥物が汚損する虞がある。また、ポリアクリルアミドが光や熱により分解して生成するアクリルアミドは発ガン性物質として知られており、ポリアクリルアミドによる環境への悪影響が懸念される。また、安全性の高いゲル化剤として澱粉、ペクチン、カラギーナン、こんにゃく芋等の増粘多糖類が知られているが、澱粉、ペクチンおよびカラギーナンではゲル化性能が低く、またこんにゃく芋を含む乾燥剤を梱包やタンス等の密閉した状態で長時間使用した場合、こんにゃく芋特有の臭いが被乾燥物に移るという問題があった。したがって、これらのゲル化剤は、潮解性無機塩の液状化の防止には不十分または不適切であった。 However, carboxymethyl cellulose has a slow gelation rate and may not be able to retain water at the initial stage of moisture absorption, and there is a possibility that the material to be dried may be soiled by water leakage from the packaging material. In addition, acrylamide produced by the decomposition of polyacrylamide by light or heat is known as a carcinogenic substance, and there is concern about the adverse effects of polyacrylamide on the environment. In addition, thickening polysaccharides such as starch, pectin, carrageenan, and konjac koji are known as highly safe gelling agents. When the product is used for a long time in a sealed state such as a package or chiffon, there is a problem that the smell peculiar to konjac is transferred to the object to be dried. Therefore, these gelling agents are insufficient or inappropriate for preventing liquefaction of the deliquescent inorganic salt.
本発明は、吸湿性能に優れ、潮解性無機塩の液状化を十分に防止でき、環境への悪影響が少なく、かつ無臭の乾燥剤を提供することを目的とする。 An object of the present invention is to provide a desiccant that is excellent in moisture absorption performance, can sufficiently prevent liquefaction of a deliquescent inorganic salt, has little adverse effect on the environment, and is odorless.
本発明者は、上記課題を解決するため鋭意研究した結果、特定の増粘多糖類を特定量含む乾燥剤は、吸湿性能に優れ、潮解性無機塩の液状化を十分に防止でき、環境への影響も少なく、かつ無臭であることを見出し、本発明を完成した。
すなわち、本発明に係る乾燥剤は以下の通りである。
（１）潮解性無機塩とムカゴこんにゃく粉末を含み、潮解性無機塩／ムカゴこんにゃく粉末＝６／４〜９／１（重量比）である乾燥剤。
（２）前ムカゴこんにゃく粉末に対し、消石灰および／または生石灰を外割で１０％（重量）以下含む前記（１）に記載の乾燥剤。
（３）前記潮解性無機塩が塩化カルシウムである前記（１）または（２）に記載の乾燥剤。
As a result of diligent research to solve the above problems, the present inventor has a desiccant containing a specific amount of a specific thickening polysaccharide, which has excellent hygroscopic performance, and can sufficiently prevent liquefaction of a deliquescent inorganic salt, and to the environment. As a result, the present invention was completed.
That is, the desiccant according to the present invention is as follows.
(1) A desiccant containing a deliquescent inorganic salt and mucago konjac powder, wherein the deliquescent inorganic salt / mugago konjac powder = 6/4 to 9/1 (weight ratio).
(2) The desiccant according to the above (1), which contains slaked lime and / or quick lime in an external ratio of 10% (weight) or less with respect to the previous mugago konjac powder.
(3) The desiccant according to (1) or (2), wherein the deliquescent inorganic salt is calcium chloride.
本発明によれば、、吸湿性能に優れ、潮解性無機塩の液状化を十分に防止でき、環境への影響が少なく、かつ無臭の乾燥剤を提供することができる。 According to the present invention, it is possible to provide a desiccant that is excellent in moisture absorption performance, can sufficiently prevent liquefaction of a deliquescent inorganic salt, has little influence on the environment, and is odorless.
以下に、本発明について詳しく説明する。
本発明に用いる潮解性無機塩は、塩化カルシウム、塩化亜鉛、塩化スズ、塩化マグネシウム、五酸化リン等が挙げられるが、特に塩化カルシウムは安価で無害かつ吸湿性能が高いため好ましい。また、潮解性無機塩は微粉、細粒または顆粒の何れの形態でも用いることができる。
The present invention is described in detail below.
Examples of the deliquescent inorganic salt used in the present invention include calcium chloride, zinc chloride, tin chloride, magnesium chloride, and phosphorus pentoxide. In particular, calcium chloride is preferable because it is inexpensive, harmless, and has high moisture absorption performance. Further, the deliquescent inorganic salt can be used in any form of fine powder, fine particles or granules.
本発明に用いるゲル化剤は、ムカゴこんにゃく粉末である。ムカゴこんにゃくは、その繊維成分であるグルコマンナンが架橋しているため大量の水を保持する性質に優れ、かつ無臭であるため、本発明に用いるゲル化剤として好適である。 The gelling agent used in the present invention is mugago konjac powder. Mukago konjac is suitable as a gelling agent for use in the present invention because glucomannan, which is a fiber component, is cross-linked and has excellent properties of retaining a large amount of water and is odorless.
本発明の乾燥剤は、潮解性無機塩とムカゴこんにゃく粉末を含み、潮解性無機塩／ムカゴこんにゃく粉末＝６／４〜９／１（重量比）が好ましく、６／４〜８／２がより好ましく、６／４〜７／３が更に好ましい。当該重量比が６／４未満では、乾燥剤に占める潮解性無機塩類の含有量が相対的に少なくなって吸湿量が低下し、当該重量比が９／１を超えるとムカゴこんにゃく粉末の含有量が少なくなって保水能力が不足し液状化の防止に十分でない。 The desiccant of the present invention contains a deliquescent inorganic salt and mucago konjac powder, preferably deliquescent inorganic salt / mucago konjac powder = 6/4 to 9/1 (weight ratio), more preferably 6/4 to 8/2. 6/4 to 7/3 is more preferable. If the weight ratio is less than 6/4, the content of deliquescent inorganic salts in the desiccant is relatively reduced and the moisture absorption is reduced, and if the weight ratio exceeds 9/1, the content of mugago konjac powder. However, the water retention capacity is insufficient and it is not sufficient for preventing liquefaction.
吸湿後の乾燥剤のゲル化を促進するために、更に本発明の乾燥剤に、消石灰および／または生石灰を含有させてもよい。この場合、消石灰および／または生石灰の含有量は、ムカゴこんにゃく粉末に対し外割で消石灰および／または生石灰を１０％（重量）以下が好ましく、５％以下がより好ましい。消石灰および／または生石灰の含有量が１０％を超えると、未溶解の消石灰が残存して、ゲル化を阻害する場合がある。 In order to promote gelation of the desiccant after moisture absorption, the desiccant of the present invention may further contain slaked lime and / or quicklime. In this case, the content of slaked lime and / or quick lime is preferably 10% (weight) or less, and more preferably 5% or less, of slaked lime and / or quick lime as an external ratio with respect to mugago konjac powder. If the content of slaked lime and / or quick lime exceeds 10%, undissolved slaked lime may remain and inhibit gelation.
本発明の乾燥剤は、潮解性無機塩類とムカゴこんにゃく粉末、または、潮解性無機塩類、ムカゴこんにゃく粉末並びに消石灰および／または生石灰を機械的に混合して製造する。 The desiccant of the present invention is produced by mechanically mixing a deliquescent inorganic salt and mucago konjac powder, or a deliquescent inorganic salt, mugago konjac powder and slaked lime and / or quicklime.
以下、本発明を実施例により具体的に説明するが、本発明はこれら実施例に限定されるものではない。
［使用材料］
１．潮解性無機塩
塩化カルシウム：中国製工業製品
２．ゲル化剤
ムカゴこんにゃく粉末：インドネシア産（Ａｍｂｉｃｏ社製、アイレス社輸入）
こんにゃく：こんにゃく清粉（日本こんにゃく協会販売）
３．消石灰
こんにゃく用凝固剤（日本こんにゃく協会販売）
EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.
[Materials used]
1. 1. Deliquescent inorganic salt calcium chloride: industrial product made in China Gelling agent mugago konjac powder: Indonesian (Ambico, imported by Aires)
Konjac: Konjac fine powder (sales by Japan Konjac Association)
3. Coagulant for slaked lime konjac (sold by Japan Konjac Association)
［貫入抵抗試験］
３０℃の恒温室内で、表１に示す配合に従い各材料を混合した後に、塩化カルシウム１００重量部に対し蒸留水を３００重量部混合して得た混合液を型枠に入れて、そのまま２４時間静置した。次に、生成したゲルの表面から垂直に１ｃｍの深さまでの貫入抵抗値をデジタルフォースゲージ（イマダ社製）を用いて測定した。貫入抵抗値の測定結果を表１に示す。
[Penetration resistance test]
Each material was mixed in a thermostatic chamber at 30 ° C. according to the formulation shown in Table 1, and then a mixed solution obtained by mixing 300 parts by weight of distilled water with 100 parts by weight of calcium chloride was put into a mold and left for 24 hours. Left to stand. Next, the penetration resistance value from the surface of the generated gel to a depth of 1 cm perpendicularly was measured using a digital force gauge (manufactured by Imada Corporation). Table 1 shows the measurement results of the penetration resistance value.
表１から分かるように、塩化カルシウムとゲル化剤を同じ比率で含有するムカゴこんにゃく含有乾燥剤とこんにゃく含有乾燥剤の貫入抵抗値を比べると（例えば、試験例１と試験例１３等）、ムカゴこんにゃく含有乾燥剤の貫入抵抗値は、試験例８と試験例２０、試験例１１と試験例２３の２組を除き、他の全ての試験例においてこんにゃく含有乾燥剤の貫入抵抗値よりも高い。従って、ムカゴこんにゃく含有乾燥剤は塩化カルシウムの液状化を十分に防止し得る。
また、吸湿後の乾燥剤のゲル化促進剤である消石灰の添加量は、試験例１１から分かるように、ムカゴこんにゃく粉末に対し外割で１０％（重量）が上限である。これ以上ゲル化促進剤を添加するとゲル化しない場合がある。
また、表１から分かるように、ムカゴこんにゃく含有乾燥剤は臭気が無いため、梱包やタンス等の密閉した状態で長時間使用した場合でも、臭いが被乾燥物に移るという問題は生じない。
As can be seen from Table 1, when the penetration resistance values of the konjac konjac-containing desiccant and the konjac-containing desiccant containing calcium chloride and the gelling agent in the same ratio are compared (for example, Test Example 1 and Test Example 13), mukago The penetration resistance value of the konjac-containing desiccant is higher than the penetration resistance value of the konjac-containing desiccant in all other test examples except for two sets of Test Example 8 and Test Example 20, Test Example 11 and Test Example 23. Therefore, the mugago konjac-containing desiccant can sufficiently prevent liquefaction of calcium chloride.
Further, as can be seen from Test Example 11, the upper limit of the amount of slaked lime that is a gelling accelerator of the desiccant after moisture absorption is 10% (weight) as an outer percentage with respect to mugago konjac powder. If a gelation accelerator is further added, gelation may not occur.
Further, as can be seen from Table 1, since the mugago konjac-containing desiccant has no odor, there is no problem that the odor is transferred to the object to be dried even when it is used for a long time in a sealed state such as packing or chiffon.
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| JP2009044692A JP5275084B2 (en) | 2009-02-26 | 2009-02-26 | desiccant |
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| JP5275084B2 true JP5275084B2 (en) | 2013-08-28 |
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| CN105032135B (en) * | 2015-08-10 | 2017-05-24 | 武汉轻工大学 | Biological desiccant and preparing method of biological desiccant |
| CN107173662A (en) * | 2017-06-05 | 2017-09-19 | 深圳知本康业有限公司 | A kind of natural moisture retardant and the peptide composition including it |
| CN114958223B (en) * | 2022-04-07 | 2024-07-05 | 湖北亿谦食品科技有限公司 | Moisture absorption patch, preparation method thereof and application thereof in dining package |
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| JPS60143819A (en) * | 1983-12-28 | 1985-07-30 | Yoshimasa Yokoyama | Dehumidifying agent |
| JPH03123620A (en) * | 1989-10-04 | 1991-05-27 | Hiroshi Kato | Dehumidifying agent |
| JP2006326502A (en) * | 2005-05-26 | 2006-12-07 | Koichiro Katsuta | Water holding agent and dehumidifying agent and hygienic goods using the same |
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