JPH08269101A - Dissolution of carboxymethylcellulose sodium salt - Google Patents
Dissolution of carboxymethylcellulose sodium saltInfo
- Publication number
- JPH08269101A JPH08269101A JP7071515A JP7151595A JPH08269101A JP H08269101 A JPH08269101 A JP H08269101A JP 7071515 A JP7071515 A JP 7071515A JP 7151595 A JP7151595 A JP 7151595A JP H08269101 A JPH08269101 A JP H08269101A
- Authority
- JP
- Japan
- Prior art keywords
- cmc
- viscosity
- aqueous solution
- dissolution
- solution
- 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.)
- Granted
Links
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 238000004090 dissolution Methods 0.000 title abstract description 13
- 239000007864 aqueous solution Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 18
- 239000011734 sodium Substances 0.000 abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 239000000243 solution Substances 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 238000011978 dissolution method Methods 0.000 description 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 4
- 150000008064 anhydrides Chemical class 0.000 description 3
- 239000002778 food additive Substances 0.000 description 3
- 235000013373 food additive Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 2
- 229940015043 glyoxal Drugs 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006266 etherification reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、カルボキシメチルセル
ロースナトリウム塩(以下「CMC−Na」という)の
溶解方法に関し、詳しくは、溶解時間を短縮させること
のできるCMC−Naの溶解方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dissolving carboxymethylcellulose sodium salt (hereinafter referred to as "CMC-Na"), and more particularly to a method for dissolving CMC-Na which can shorten the dissolution time.
【0002】[0002]
【従来の技術】CMC−Naは水に対する分散性が悪
く、水中へ投入した時にママコ(継粉)になり易い。こ
のため、水に溶解しようとする際には、充分強力な撹拌
を行ないながら少量ずつ添加することが必要であった。2. Description of the Related Art CMC-Na has a poor dispersibility in water, and when it is put into water, CMC-Na easily becomes mamko. For this reason, when trying to dissolve it in water, it was necessary to add it little by little with sufficiently strong stirring.
【0003】しかしながら、溶解させるまでに相当時間
が必要となるため、従来より下記の〜のCMC−N
a即溶方法が提案され報告されている。However, since it takes a considerable time to dissolve, CMC-N of
a Rapid dissolution method has been proposed and reported.
【0004】溶解性を増す為に加熱する方法。 エタノール、グリセリン等のCMC−Na不溶性溶媒
を少量用いてCMC−Naを分散させた後、水に溶解す
る方法。 ママコの発生を防止して溶解時間を短縮することを狙
い、CMC−Naをグリオキサールで処理する方法。 ママコ発生を防止する別の方法として、CMC−Na
を熱処理することにより水分散性を向上させる方法。A method of heating to increase solubility. A method in which CMC-Na is dispersed using a small amount of a CMC-Na insoluble solvent such as ethanol or glycerin and then dissolved in water. A method of treating CMC-Na with glyoxal in order to prevent the development of mamako and shorten the dissolution time. CMC-Na is another way to prevent mamako.
A method of improving water dispersibility by heat treatment.
【0005】[0005]
【発明が解決しようとする課題】上記したの方法は、
CMC−Naの粘度低下を招き、好ましくなかった。The method described above is
This was not preferable because it caused a decrease in the viscosity of CMC-Na.
【0006】の方法は、使用するCMC−Na水溶液
中のエタノール、グリセリンなどが障害(邪魔)になる
ことがあり、除去工程が別途必要で大変煩わしかった。The method of (1) was very troublesome because the ethanol, glycerin, etc. in the CMC-Na aqueous solution to be used could obstruct (interfere) and a separate removing step was required.
【0007】の方法は非常に手間がかかり、かつ媒質
である水のpHをアルカリ性にしなければ完全な溶解は
望めなかった。これに加え、グリオキサール自体、食品
添加物として好ましくなく、用途の制限を余儀なくされ
た。The method (1) is very troublesome, and complete dissolution cannot be expected unless the pH of the medium water is made alkaline. In addition to this, glyoxal itself is not preferable as a food additive, and its use has been restricted.
【0008】の方法は、遊離のカルボキシル基の加熱
処理によってエステル結合を生成させることを特徴とし
ているが、このため、水溶液のpHが酸性側になりやす
く、食品添加物基準の定めるpH6.0〜8.5に適合
させるためには、例えばpH調製など煩雑な操作を必要
とした。The method of (1) is characterized in that an ester bond is generated by heat treatment of a free carboxyl group. Therefore, the pH of the aqueous solution tends to be acidic, and the pH of the food additive standard is 6.0 to 6.0. In order to adapt to 8.5, complicated operations such as pH adjustment were required.
【0009】上述したように、従来の溶解方法はいずれ
も、CMC−Naの即溶性を確保する代償として、煩雑
な操作、及び用途的制限を余儀なくされた。As described above, in all of the conventional dissolution methods, complicated operations and application restrictions are inevitable as a price to ensure the immediate solubility of CMC-Na.
【0010】なお、通常は粉末形状を呈するCMC−N
aを、顆粒状(グラニュータイプ。1.1μm〜188
μm(16〜80#))に仕上げ、これを水中に投入す
る方法がある。Incidentally, CMC-N which is usually in the form of powder
a is granular (granulated type. 1.1 μm to 188
μm (16-80 # )), and then put this in water.
【0011】この方法は、ママコを作らず、ゆるやかな
撹拌で溶解できるという点では優れているが、当然のこ
とながら粉末状品を顆粒状品に仕上げる時の繁雑な製造
操作が必要であるばかりか、それほど溶解時間を短縮さ
せるには至らなかった。This method is excellent in that it can be dissolved by gentle stirring without making mamako, but naturally, it requires a complicated manufacturing operation when finishing a powdery product into a granular product. However, the dissolution time was not so shortened.
【0012】[発明の目的]本発明は上記の実情に鑑み
てなされたものであり、その目的は、CMC−Naの溶
解時間を簡便に短縮させることのできる方法を提供する
ところにある。[Object of the Invention] The present invention has been made in view of the above circumstances, and an object thereof is to provide a method capable of simply shortening the dissolution time of CMC-Na.
【0013】[0013]
【課題を解決するための手段】請求項1記載のCMC−
Naの溶解方法は、2%(重量%、以下同様)水溶液の
25℃における粘度が5mpa・s以下である低粘度C
MC−Naの水溶液を予め調製し、この水溶液中で、C
MC−Naを溶解することを特徴とする方法である。CMC-according to claim 1,
The method for dissolving Na is a low-viscosity C in which the viscosity of a 2% (wt%, hereinafter the same) aqueous solution at 25 ° C. is 5 mpa · s or less.
An aqueous solution of MC-Na was prepared in advance, and in this aqueous solution, C
The method is characterized by dissolving MC-Na.
【0014】請求項2のように、前記予め調製した低粘
度水溶液の濃度が0.1〜2%であることが好適であ
る。It is preferable that the concentration of the low viscosity aqueous solution prepared in advance is 0.1 to 2%.
【0015】[手段を構成する要件]本発明は、次のよ
うな点に着目してなされたものである。すなわち、CM
C−Naを水に溶解する時、水に対する分散性が悪いこ
とによってママコの生成を許し、このママコの生成が溶
解時間を延ばしている。従って、ママコの生成を抑える
ことが、CMC−Naの即溶性につながる。ママコ生成
防止法として、媒体とする水に前もって粘度が出にくい
低粘度CMC−Naを溶解しておき、CMC−Naを水
に投入した時のママコ生成を抑えることが即溶性につな
がる。[Requirements Constituting Means] The present invention was made by paying attention to the following points. That is, CM
When C-Na is dissolved in water, its poor dispersibility in water allows the formation of mamako, and this mamaco formation prolongs the dissolution time. Therefore, suppressing the formation of mamako leads to immediate solubility of CMC-Na. As a mamako formation preventing method, low viscosity CMC-Na having a low viscosity is dissolved in water as a medium in advance, and the mamako formation when CMC-Na is added to water is immediately dissolved, which leads to immediate solubility.
【0016】予め調製しておく低粘度水溶液のためのC
MC−Naは、25℃における無水物2%水溶液の粘度
が5mpa・s以下(BM型粘度計、60rpm)のも
のが良い。C for a low viscosity aqueous solution prepared in advance
MC-Na preferably has a viscosity of an aqueous solution of 2% anhydride at 25 ° C. of 5 mpa · s or less (BM type viscometer, 60 rpm).
【0017】濃度には特に限定はないが0.1〜2%の
水溶液を使用することが好ましい。2%を超える場合に
は、溶解後の粘度が高くなる、すなわち、溶解しようと
するCMC−Naの溶解後の粘度が前もって溶解してあ
る低粘度CMC−Naの影響で高くなる等の現象が出る
可能性があり、0.1%未満では、本発明の作用効果が
小さくなる可能性がある。なお、さらに好ましい範囲は
0.5〜1.0%である。The concentration is not particularly limited, but it is preferable to use an aqueous solution of 0.1 to 2%. If it exceeds 2%, the viscosity after dissolution becomes high, that is, the viscosity after dissolution of the CMC-Na to be dissolved becomes high due to the influence of the low-viscosity CMC-Na that has been previously dissolved. If it is less than 0.1%, the action and effect of the present invention may be reduced. The more preferable range is 0.5 to 1.0%.
【0018】本発明で使用し得るCMC−Na(溶解し
ようとするCNC−Na)としては一般的に、無水物1
%水溶液の粘度が5〜20,000mpa・sのものが
挙げられる。また、用途により異なるが0.2〜20%
で溶解される。エーテル化度は0.4〜2.5とほぼ全
範囲に効果がある。As the CMC-Na (CNC-Na to be dissolved) which can be used in the present invention, an anhydride 1 is generally used.
% Aqueous solution having a viscosity of 5 to 20,000 mpa · s. Also, depending on the application, 0.2-20%
Is dissolved in. The degree of etherification is effective in almost the entire range of 0.4 to 2.5.
【0019】上記CMC−Naは、市販されているセロ
ゲンF−5A(第一工業製薬(株)製)を使用すること
もできる。このセロゲンF−5Aは、溶解しようとする
CMC−Naと同じCMC−Naであること、セロゲン
F−5Aは食品添加物、香粧品原料基準、飼料添加物、
日局方の公的基準に適合していることなどから用途面か
らはどのようにも本法を採用することができる。As the CMC-Na, a commercially available serogen F-5A (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) can be used. This serogen F-5A is the same CMC-Na as the CMC-Na to be dissolved, and the serogen F-5A is a food additive, a cosmetic raw material standard, a feed additive,
This method can be adopted in any way from the viewpoint of application because it complies with the official standards of the Japanese Pharmacopoeia.
【0020】[0020]
【作用】CMC−Naの即溶化は、低粘度CMC−Na
水溶液に粉末を投入することで可能となるわけである
が、これを理論的に説明することはできない。Function: Immediate dissolution of CMC-Na is a low viscosity CMC-Na
It is possible to add powder to the aqueous solution, but this cannot be explained theoretically.
【0021】おそらく、共存している低粘度CMC−N
a水溶液における水に溶解したCMC−Na分子と、こ
れから溶解しようとするCMC−Naの分子との活性基
同士が何らかの相互作用を表し、これにより親水性が瞬
間的に低下するためママコが生成し難くなり、全体とし
て水に対する即溶性に結びつくためと考えられる。Possibly coexisting low viscosity CMC-N
a) The active groups of the CMC-Na molecule dissolved in water in the aqueous solution and the molecule of CMC-Na which is about to be dissolved exhibit some interaction, which causes the hydrophilic property to be momentarily lowered, resulting in the formation of mamako. It is thought to be because it becomes difficult, and as a whole it is linked to immediate solubility in water.
【0022】[0022]
【実施例】実施例1〜50および比較例1〜9([表1]〜[表
4]参照) 低粘度CMC−Na水溶液の調製 2,000mlビーカーに2,000mlの純水を採
り、低粘度CMC−Na(第一工業製薬(株)製:セロ
ゲンF−5A)を[表1]〜[表4]に記載した濃度と
なるように添加してスリーワンモーターを用いて溶解し
た。なお、使用したCMC−Naの無水物2%水溶液の
粘度は、3.9mpa・s(BM型粘度計・60rp
m、25℃)である。EXAMPLES Examples 1 to 50 and Comparative Examples 1 to 9 ([Table 1] to [Table
4] Preparation of low-viscosity CMC-Na aqueous solution 2,000 ml of pure water was placed in a 2,000-ml beaker, and low-viscosity CMC-Na (Serogen F-5A manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) was used in [Table 1 ]-[Table 4] It added so that it might become the density | concentration described in [Table 4], and it melt | dissolved using the three one motor. The viscosity of the 2% anhydrous CMC-Na solution used was 3.9 mpa · s (BM type viscometer, 60 rp).
m, 25 ° C).
【0023】溶解時間の測定 500mlビーカーに、上記で得られた低粘度CMC
−Na水溶液を400ml採り、スリーワンモーターで
50mmφの4枚羽根プロペラ1000rpmで撹拌し
た。これにCMC−Naを、ビーカー壁及び撹拌棒に付
着しないように投入し、ママコがなくなり完全に溶解す
るまでの所要時間を測定した。Measurement of dissolution time In a 500 ml beaker, the low-viscosity CMC obtained above was placed.
-400 ml of Na aqueous solution was taken, and it stirred by a three-one motor with 1000 rpm of 4-blade propeller of 50 mmphi. CMC-Na was added to this so that it would not adhere to the beaker wall and the stirring rod, and the time required until the mother fish disappeared and it completely dissolved was measured.
【0024】粘度の比較 上記で完全溶解させた水溶液をBM型粘度計回転数6
0rpmで25℃条件で粘度を測定した。Comparison of Viscosity An aqueous solution completely dissolved in the above was used as a BM type viscometer with a rotation speed of 6
The viscosity was measured at 0 rpm and 25 ° C.
【0025】なお、上記での溶解CMC−Naは含水
量を補正する為、無水物に換算して投入している。例え
ば、水分=8.0%のCMC−Naを溶解しようとする
時のCMC−Na量は次のようになる。すなわち、2%
濃度液を作成する場合のCMC−Na量は、g(98−
8)/2=400から、g=8.9(グラム)となり、
10%濃度液を作成する場合のCMC−Na量は、g
(90−8)/10=400から、g=48.8(グラ
ム)となる。In order to correct the water content, the dissolved CMC-Na described above is added as an anhydride. For example, the amount of CMC-Na when trying to dissolve CMC-Na having a water content of 8.0% is as follows. That is, 2%
The amount of CMC-Na when a concentrated solution is prepared is g (98-
From 8) / 2 = 400, g = 8.9 (gram),
The amount of CMC-Na when preparing a 10% concentration solution is g
From (90-8) / 10 = 400, g = 48.8 (gram).
【0026】[0026]
【表1】 [Table 1]
【0027】[0027]
【表2】 [Table 2]
【0028】[0028]
【表3】 [Table 3]
【0029】[0029]
【表4】 [Table 4]
【0030】[0030]
【発明の効果】請求項1記載の溶解方法によれば、CM
C−Naの溶解時間を簡便に短縮させることができる。According to the dissolution method of claim 1, CM
The dissolution time of C-Na can be easily shortened.
【0031】請求項2記載の溶解方法によれば、溶解し
ようとするCMC−Naの溶解後の粘度を、前もって溶
解した低粘度CMC−Na水溶液に影響を及ぼされず、
低く抑えることができる。According to the dissolution method of claim 2, the viscosity of the CMC-Na to be dissolved is not affected by the low viscosity CMC-Na aqueous solution previously dissolved,
It can be kept low.
Claims (2)
a・s以下である低粘度カルボキシメチルセルロースナ
トリウム塩の水溶液を予め調製し、この水溶液中で、カ
ルボキシメチルセルロースナトリウム塩を溶解すること
を特徴とするカルボキシメチルセルロースナトリウム塩
の溶解方法。1. The viscosity of a 2% aqueous solution at 25 ° C. is 5 mp.
A method for dissolving carboxymethylcellulose sodium salt, which comprises previously preparing an aqueous solution of low-viscosity carboxymethylcellulose sodium salt having an a / s or less and dissolving the carboxymethylcellulose sodium salt in the aqueous solution.
ースナトリウム塩の溶解方法において、予め調製した低
粘度水溶液の濃度が0.1〜2%であることを特徴とす
る溶解方法。2. The method for dissolving carboxymethylcellulose sodium salt according to claim 1, wherein the concentration of the low-viscosity aqueous solution prepared in advance is 0.1 to 2%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07151595A JP3648573B2 (en) | 1995-03-29 | 1995-03-29 | Method for dissolving carboxymethylcellulose sodium salt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07151595A JP3648573B2 (en) | 1995-03-29 | 1995-03-29 | Method for dissolving carboxymethylcellulose sodium salt |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08269101A true JPH08269101A (en) | 1996-10-15 |
JP3648573B2 JP3648573B2 (en) | 2005-05-18 |
Family
ID=13462936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP07151595A Expired - Fee Related JP3648573B2 (en) | 1995-03-29 | 1995-03-29 | Method for dissolving carboxymethylcellulose sodium salt |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3648573B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007063427A (en) * | 2005-08-31 | 2007-03-15 | Dai Ichi Kogyo Seiyaku Co Ltd | Method for producing carboxymethyl cellulose salt |
JP2008228696A (en) * | 2007-03-23 | 2008-10-02 | Taiyo Kagaku Co Ltd | Easily soluble cmc composition |
US8728449B2 (en) * | 2005-01-22 | 2014-05-20 | Monosol Llc | Water-soluble film article having salt layer, and method of making the same |
JP2016053063A (en) * | 2012-05-14 | 2016-04-14 | 帝人株式会社 | Radiation sterilization resistant protein composition |
WO2022064272A1 (en) * | 2020-09-22 | 2022-03-31 | Rensselaer Polytechnic Institute | Polysaccharide-including liquid material and its manufacturing method |
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---|---|---|---|---|
JPS6079001A (en) * | 1983-10-06 | 1985-05-04 | Kohjin Co Ltd | Production of lowly viscous hydroxycarboxylic acid derivative of cellulose |
JPH01149801A (en) * | 1987-12-07 | 1989-06-12 | Dai Ichi Kogyo Seiyaku Co Ltd | Production of modified cellulose ether |
JPH0425502A (en) * | 1990-05-21 | 1992-01-29 | Daicel Chem Ind Ltd | Ultralow-viscosity carboxymethylcellulose sodium salt |
JPH05214162A (en) * | 1992-02-04 | 1993-08-24 | Dai Ichi Kogyo Seiyaku Co Ltd | Thixotropic carboxymethylcellulose sodium composition |
-
1995
- 1995-03-29 JP JP07151595A patent/JP3648573B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6079001A (en) * | 1983-10-06 | 1985-05-04 | Kohjin Co Ltd | Production of lowly viscous hydroxycarboxylic acid derivative of cellulose |
JPH01149801A (en) * | 1987-12-07 | 1989-06-12 | Dai Ichi Kogyo Seiyaku Co Ltd | Production of modified cellulose ether |
JPH0425502A (en) * | 1990-05-21 | 1992-01-29 | Daicel Chem Ind Ltd | Ultralow-viscosity carboxymethylcellulose sodium salt |
JPH05214162A (en) * | 1992-02-04 | 1993-08-24 | Dai Ichi Kogyo Seiyaku Co Ltd | Thixotropic carboxymethylcellulose sodium composition |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8728449B2 (en) * | 2005-01-22 | 2014-05-20 | Monosol Llc | Water-soluble film article having salt layer, and method of making the same |
JP2007063427A (en) * | 2005-08-31 | 2007-03-15 | Dai Ichi Kogyo Seiyaku Co Ltd | Method for producing carboxymethyl cellulose salt |
JP2008228696A (en) * | 2007-03-23 | 2008-10-02 | Taiyo Kagaku Co Ltd | Easily soluble cmc composition |
JP2016053063A (en) * | 2012-05-14 | 2016-04-14 | 帝人株式会社 | Radiation sterilization resistant protein composition |
WO2022064272A1 (en) * | 2020-09-22 | 2022-03-31 | Rensselaer Polytechnic Institute | Polysaccharide-including liquid material and its manufacturing method |
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