JPS61136534A - Readily soluble paste-like thickener - Google Patents

Readily soluble paste-like thickener

Info

Publication number
JPS61136534A
JPS61136534A JP59258540A JP25854084A JPS61136534A JP S61136534 A JPS61136534 A JP S61136534A JP 59258540 A JP59258540 A JP 59258540A JP 25854084 A JP25854084 A JP 25854084A JP S61136534 A JPS61136534 A JP S61136534A
Authority
JP
Japan
Prior art keywords
water
cellulose
thickener
suspension
paste
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
Application number
JP59258540A
Other languages
Japanese (ja)
Other versions
JPH0419259B2 (en
Inventor
Akio Ito
伊東 明男
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.)
Daicel Corp
Original Assignee
Daicel Chemical Industries 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 Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Priority to JP59258540A priority Critical patent/JPS61136534A/en
Publication of JPS61136534A publication Critical patent/JPS61136534A/en
Publication of JPH0419259B2 publication Critical patent/JPH0419259B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE:The titled thickener which can be easily produced and is excellent in suspension stability and storage stability, obtained by mixing a powdered water-soluble polymer with a polyalkylene glycol and an aqueous suspension of microfibril cellulose. CONSTITUTION:5-50pts.wt. aqueous suspension (cellulose content of about 2%) of microfibril cellulose obtained by micronizing a fibrous cellulose by repeatedly passing a suspension of the fiber through a homogenizer under a high pressure is added to a mixture comprising 20-60pts.wt. powdered water-soluble polymer (e.g., CMC) and 100pts.wt. dispersing solvent formed by mixing at least one relatively low-MW, normally liquid water-soluble polyalkylene glycol (e.g., polyethylene glycol) with, optionally, a polyhydric alcohol (e.g., methanol) and a hydrophilic solvent (e.g., acetone).

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、貯蔵安定性に優れた水に易溶性ノヘースト状
増粘剤に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a nohaste-like thickener that is readily soluble in water and has excellent storage stability.

(従来の技術) 広(瑠粘剤として使用される水溶性高分子例えは、水浴
性セルロースエーテル類、天然水浴性ガム類、ポリビニ
ルアルコールなどの水浴性台底高分子は、これらの粉末
を水に投入すると、凝果体を遺り、表面が溶解して直ち
に水を浸透しない膜を形成し、いわゆるママコ状悪とな
る。このようなママコを生hX fると、その内部は水
との接触が絶たれるため、これを溶解するのに多くの時
間と多大の労力を要する。
(Prior art) Water-soluble polymers used as thickeners, such as water-bathable cellulose ethers, natural water-bathable gums, and polyvinyl alcohol, are made by mixing these powders with water. When placed in water, condensates remain and the surface dissolves, immediately forming a film that does not allow water to permeate, resulting in what is known as mamako. Since contact is broken, it takes a lot of time and effort to dissolve it.

かかるママコ現象を防止するために、従来から種々の提
案がなされている。例えば、粉末状水溶性高分子をグリ
オキザールなどのアルデヒドで前処理して表面を一部不
俗化し、水への分散性を向上させ、ついでこの分散系に
アルカリ性物質を添加して溶液をアルカリ注とすること
により分散粒子の溶解速度を高める方法が知られている
(特公昭42−6674号公@)。
Various proposals have been made in the past to prevent this phenomenon. For example, a powdered water-soluble polymer is pretreated with an aldehyde such as glyoxal to make the surface partially coarse and improve its dispersibility in water, and then an alkaline substance is added to this dispersion system to make the solution alkali-poured. A method of increasing the dissolution rate of dispersed particles by increasing the dissolution rate is known (Japanese Patent Publication No. 42-6674@).

また、水溶性高分子を顆粒状に整粒することにより、水
への分散性を良好にし、ママコの生成を防止することも
よく知られている(特公昭46−2190号公報)。
It is also well known that granulating water-soluble polymers improves their dispersibility in water and prevents the formation of mako (Japanese Patent Publication No. 46-2190).

さらに、水への分散性と同時に溶解性をも向上させる目
的で、一定量の水分を含んだ粒状水浴性セルロースエー
テルを、ぞ閉容器中で加熱処理する方法も提案されてい
る(符公昭50−2985号公罐)。
Furthermore, a method has been proposed in which granular water-bathable cellulose ether containing a certain amount of water is heat-treated in a closed container in order to improve both its dispersibility and solubility in water (1986). -2985 public can).

(発明が解決しようとする問題点) しかし、従来知られているこれらのママコの生成を防止
して、水浴性高分子を水に溶解する方法では、ママコの
生成防止にはある程度有効であるが、アルデヒド処理や
顆粒状にするために前処理工程が必要となる。しかもこ
れらの前処理により一般に分散性は改善されるが、その
反面、水への溶解性は悪くなり、溶解速度が遅(なる欠
点があった。
(Problems to be Solved by the Invention) However, the conventionally known methods of preventing the formation of mako and dissolving the water-bathable polymer in water are effective to some extent in preventing the formation of mako. , pretreatment steps are required for aldehyde treatment and granulation. Moreover, although dispersibility is generally improved by these pretreatments, on the other hand, the solubility in water becomes poor and the dissolution rate is slow.

この欠点を解決するため、アルデヒド処理した水溶性高
分子の場合は、水に分散させたのち分散系にアルカリ性
物質を添加して架橋結合をはずし、溶解迷夏を促進する
ことを提案している。しかし、アルカリ性vJjXの添
加のため溶解作業か煩雑となり、また得られる溶液のP
Hが゛アルカリ性となる欠点が解決されていない。
To solve this problem, it has been proposed that aldehyde-treated water-soluble polymers be dispersed in water and then an alkaline substance added to the dispersion system to remove crosslinks and promote dissolution. . However, the addition of alkaline vJjX makes the dissolution process complicated, and the P of the resulting solution
The disadvantage that H becomes alkaline has not been solved.

また、粒状水浴性高分子を密閉容器中で予め加熱処理を
行うことにより、水への分散性と溶解性を同時に改良す
る方法は、11工処理のためのぞ閉容器yf:狩つm熱
処理設備が必要である。
In addition, a method for simultaneously improving dispersibility and solubility in water by preheating a granular water-bathable polymer in a closed container is a method for improving the dispersibility and solubility in water at the same time. Equipment is required.

本発明者は、水浴性高分子をママコを生成することなく
、しかも水へ迅速に且つ極めて均一に溶解させる方法に
ついて鋭意研究を行った結果、本発明の易溶性ペースト
状増粘剤の発明に到達したものである。
The present inventor conducted intensive research on a method for dissolving water-bathable polymers in water quickly and extremely uniformly without producing a lump, and as a result, the invention of the easily soluble paste thickener of the present invention was achieved. It has been reached.

(問題点を解決するための手段) すなわち、本発明は粉末状水溶性高分子にボリア A/
キレングリコールとミクロフィプリルセ、ルロースの水
懸濁液を混合してなる易溶性ペースト状増粘剤である。
(Means for Solving the Problems) That is, the present invention provides powdery water-soluble polymers with Boria A/
This is an easily soluble paste-like thickener made by mixing an aqueous suspension of kylene glycol, microfiprilse, and lullose.

本発明における水溶性高分子とは、例えばメチルセルロ
ース、エチルセルロース、ヒドロキシエチルセルロース
、ヒドロキシプロピルセルcl−ス、エチルヒドロキシ
エチルセルロース、エチルヒドロキシエチルセルロース
、メチルヒドロキシプロピルセルロース、ヒドロキシエ
チルヒドロキシプロビルセルロース、カルボキシメチル
セルロースおよびそのアルカリ金属塩、カルボキシメチ
ルヒドロキシエチルセルロースおよびそのアルカリ省属
塩のような水浴性セルロースエーテル類、または例えば
、膨化澱粉、カラギーナン、トラガントガム、グアーガ
ム、アルギン酸ナトリウムのような水溶性天然ガムおよ
びその誘導体、またはポリビニルアルコールなどの水浴
性合成高分子などである。
The water-soluble polymer in the present invention includes, for example, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, ethylhydroxyethylcellulose, ethylhydroxyethylcellulose, methylhydroxypropylcellulose, hydroxyethylhydroxypropylcellulose, carboxymethylcellulose, and its alkali metal salts, water bathable cellulose ethers such as carboxymethyl hydroxyethyl cellulose and its alkaline salts, or water-soluble natural gums and their derivatives, such as expanded starch, carrageenan, tragacanth gum, guar gum, sodium alginate, or polyvinyl alcohol. water-bathable synthetic polymers such as

これらの水浴性高分子の形状は粉末状のものであるが、
微細な繊維状のものも含まれる。七〇粒径は微細なもの
ほど溶解性と懸濁安定性の優れた易溶性ペースト状増粘
剤が得られるので望ましいが、特に限定されるものでは
な(、通常市販されている30〜500メッシS程度の
ものが使用でざる。
These water-bathable polymers are in the form of powder, but
It also includes fine fibrous materials. 70 The finer the particle size, the more easily soluble paste thickeners with excellent solubility and suspension stability can be obtained, so it is desirable, but there is no particular limitation (usually commercially available 30-500 Something like Messi S should not be used.

本発明において分散溶媒として用いるポリアルキレング
リコールは比較的低分子量の室温において液状で、かつ
水溶性のものである。例えば、ポリエチレングリコール
では分子量が約400以下のものが好ましく、またポリ
プロピレングリコールでは分子量か幻900以下のもの
が好ましい。
The polyalkylene glycol used as a dispersion solvent in the present invention has a relatively low molecular weight, is liquid at room temperature, and is water-soluble. For example, polyethylene glycol preferably has a molecular weight of about 400 or less, and polypropylene glycol preferably has a molecular weight of about 900 or less.

これ以上の一分子量のものは室温で固体となるか、ある
いは水に不溶となり、本発明の目的に適しな〜)。
Those with a molecular weight larger than this are solid at room temperature or insoluble in water, and are suitable for the purpose of the present invention.

分散溶媒には、これらのポリアルキレングリコールの一
棟、または二種以上が使用されるが、さらにポリアルキ
レングリコールにメタノール、エタノール、イソプロパ
ツール、ブタノールなどの低級アルコールやエチレング
リコール、プロピレングリコール、グリセリンなどの多
価アルコール、アセト/などの親水性溶剤を配合した混
合溶媒も使用することができる。
One or more of these polyalkylene glycols are used as the dispersion solvent, and lower alcohols such as methanol, ethanol, isopropanol, butanol, ethylene glycol, propylene glycol, and glycerin are also used in addition to polyalkylene glycols. A mixed solvent containing a hydrophilic solvent such as a polyhydric alcohol such as acetyl alcohol and acetate may also be used.

しかし、ポリアルキレングリコールを配合することが本
発明の必須要件であり、メタノール等の低級アルコール
類やアセトンなどの親水性溶剤のみでは、分散した粉末
状水浴性高分子が短時間で沈降分離してしま55えに、
水に投入した場合、7ctツク状のママコを生成する。
However, blending polyalkylene glycol is an essential requirement of the present invention, and if lower alcohols such as methanol or hydrophilic solvents such as acetone are used alone, the dispersed powdery water-bathable polymer will settle and separate in a short period of time. Shima 55 Eni,
When placed in water, it produces a 7ct block-shaped mamako.

又、グリセリン、エチレングリコール、プロピレングリ
コールナトの多価アルコールのみに、粉末状水浴性高分
子を高嫉度に分散させたものは、貯蔵中に分散した水浴
性高分子粒子が膨潤して分散ペーストが流動性を失ない
固結してしまう。いずれの場合も不発明の目的を達する
ことができない。
In addition, when powdered water-bathable polymers are highly dispersed only in polyhydric alcohols such as glycerin, ethylene glycol, and propylene glycol, the dispersed water-bathable polymer particles swell during storage and form a dispersed paste. will solidify without losing its fluidity. In either case, the purpose of non-invention cannot be achieved.

分散安定剤として添加するミクロフィフリルセルロース
(以下M F Cと略力は、1979年12月26日米
国e粁出顧S、N。107446号に基ずく″に種のセ
ルロースであって、繊維状セルロースの懸濁液を高圧力
の下で均質化器内を何回か橡返して通過させることによ
り、セルロースをミクロフィブリルの状態まで微細化し
たものである。このMFCは優れた分散安定効果のある
ことがよ(知られているが、不発明のペースト状増粘剤
の場合には分散溶媒であるポリアルキレングリコールと
の併用により、特にその安定化に有効であり、その添加
により長期保存中の沈降分離を防止することが可能とな
った。このMFCは、通常セルロース分が0.2〜10
蛋鷺%の水懸濁液として供給されるが、)、f F C
のグリセリンmm液または乾燥したa未収のM F C
を使用することもできる。
Microfifuryl cellulose (hereinafter abbreviated as MFC) added as a dispersion stabilizer is a type of cellulose based on US e-commerce publication S, N. 107446, December 26, 1979, By passing a suspension of cellulose in the form of cellulose through a homogenizer several times under high pressure, the cellulose is refined to the state of microfibrils.This MFC has an excellent dispersion stabilizing effect. (It is known that in the case of uninvented pasty thickeners, the combination with polyalkylene glycol, which is a dispersion solvent, is particularly effective in stabilizing the thickener, and its addition allows for long-term storage. It has become possible to prevent sedimentation separation in the MFC.This MFC usually has a cellulose content of 0.2 to 10
It is supplied as an aqueous suspension of 1% protein), f F C
Glycerin mm solution or dried a-accrued MFC
You can also use

本発明の易溶性ペースト状増粘剤の各成分の配合比率は
、ポリアルキレングリコールまたはポリアルキレングリ
コールと親水性溶剤との混合物からなる分散溶媒100
重貸部に対して、粉末状水溶性高分子を20〜60重歓
部混合し、沈降防止剤であるMFCは、セルロース分が
2%の水懸濁液として5〜50部添加するのが良い。
The blending ratio of each component of the easily soluble pasty thickener of the present invention is 100% of the dispersion solvent made of polyalkylene glycol or a mixture of polyalkylene glycol and a hydrophilic solvent.
It is recommended to mix 20 to 60 parts of a powdered water-soluble polymer to the 2% suspension, and add 5 to 50 parts of MFC, an anti-settling agent, as an aqueous suspension with a cellulose content of 2%. good.

粉末状水溶性高分子が20重量部以下では十分な増粘効
果が得られず、60賞量部以上では得られるペーストの
流動性が低くすぎて取扱いが困難となる。また、MFC
の添加量は少な(、・と十分な沈降防止効果が得られず
、多すぎるとペーストの粘度が高(なりすぎるので好ま
しくない。
If the powdered water-soluble polymer is less than 20 parts by weight, a sufficient thickening effect cannot be obtained, and if it is more than 60 parts by weight, the resulting paste has too low fluidity and is difficult to handle. Also, MFC
If the amount of addition is too small, a sufficient anti-sedimentation effect cannot be obtained, and if it is too large, the viscosity of the paste becomes too high, which is undesirable.

(発明の効果) 本発明の易溶性ペースト状増粘剤は、水に投入するとマ
マコな生ぜず、軽く攪拌するだけで瞬時に分散溶解して
均一で粘稠な液が得られるので、増粘剤として溶解の作
条性が画期的に改善される。
(Effects of the Invention) The easily soluble pasty thickener of the present invention does not form a lumpy texture when added to water, and can be dispersed and dissolved instantly by slight stirring to obtain a uniform and viscous liquid. As an agent, the dissolution processability is dramatically improved.

また、本発明の易俗性ペースト状増粘剤は、分散溶媒の
ポリアルキレングリコールに粉末状水溶性高分子とM 
F Cを混合し、撹拌するだけ容易に得られるもので、
前処理のための化学処理設備や加熱処理設備など特別な
設備が不要となるほか、ペースト状で流動性があるため
ポンプ輸送が可能であり、その輸送と貯蔵が容易である
In addition, the easy-to-use paste thickener of the present invention contains powdery water-soluble polymer and M
It can be easily obtained by mixing FC and stirring.
In addition to eliminating the need for special equipment such as chemical treatment equipment or heat treatment equipment for pretreatment, it is paste-like and fluid, so it can be transported by pump, making it easy to transport and store.

(実施例ン 以下実施例で本発明を説明する。実施例中の部および%
は重量部および重量%である。
(Examples) The present invention will be explained in the following examples. Parts and percentages in the examples
are parts and % by weight.

実施例1゜ 粉末状カルボキシメチルセルロース20部を各種の分散
溶媒100部に混合攪拌して調製したペースト、および
これに更に沈降防止剤としてミクロフィフリルセルロー
ス(M F C)の2%水懸瀾液を5部添加混合攪拌し
て調製したペーストについて、ペーストの保存安定性お
よび水へ投入した時の溶解状態を観察した。結果を餞1
に示す。
Example 1 A paste prepared by mixing and stirring 20 parts of powdered carboxymethylcellulose with 100 parts of various dispersion solvents, and a 2% suspension of microfifuryl cellulose (MFC) in water as an anti-settling agent. The storage stability of the paste and the state of dissolution when added to water were observed for the paste prepared by adding, mixing and stirring 5 parts of the paste. Results 1
Shown below.

r 実施例2゜ 重合度400の液状のポリエチレングリコール100.
!i’に、セルロース分が2%のMFC水懸濁液を20
g添加し、良く混合して分散させ、その中に粉末状のカ
ルボキシメチルセルロースを35.9添加し、混合分散
させてペーストとした。このペーストは必要量を水中に
投入し、軽(攪拌するだけで必要な粘度の水浴液を得る
ことがでさた。
r Example 2 Liquid polyethylene glycol with a degree of polymerization of 400.
! i', add 20% MFC water suspension containing 2% cellulose.
35.9 grams of powdered carboxymethylcellulose was added thereto, mixed and dispersed to form a paste. It was possible to obtain a water bath liquid of the required viscosity simply by adding the required amount of this paste into water and stirring.

また、このペーストを放置貯蔵した場合に、沈降分離や
(6)化はおこらす、簡単な攪拌で調製時の状態に戻る
のか認められた。
It was also observed that if this paste was left to stand and was stored, sedimentation and separation (6) would occur, and simple stirring would return it to the state at the time of preparation.

実施例3゜ 重合度600のポリエチレングリコール50gにメタノ
ール50!!を混合して均一な溶剤とし、この中にセル
ロース分が2%のM F C水懸濁液30.9を添加し
て良く混合分散させた。
Example 3: 50 g of polyethylene glycol with a degree of polymerization of 600 and 50 g of methanol! ! were mixed to form a uniform solvent, and 30.9 g of an aqueous suspension of MFC containing 2% cellulose was added thereto and thoroughly mixed and dispersed.

ソ;CK ltj 末にのヒドロキシエチルセルロース
20gを分散混合し、ペーストとした。このペーストは
必安斌を水中に投入し、軽(攪拌するだけで瞬時に必要
な粘度の均一な水浴液を得ることができた。また、この
ペースは貯蔵中に沈降分離や固化はおこらなかった。
20 g of hydroxyethylcellulose was dispersed and mixed into a paste. This paste was made by adding Bi'anbin to water and instantly obtaining a water bath liquid with the required viscosity and uniformity by stirring.Also, this paste did not undergo sedimentation or solidification during storage. Ta.

Claims (1)

【特許請求の範囲】[Claims] 1 粉末状水溶性高分子にポリアルキレングリコールと
ミクロフィフリルセルロースの水懸濁液を混合してなる
易溶性ペースト状増粘剤。
1. An easily soluble pasty thickener made by mixing a powdered water-soluble polymer with an aqueous suspension of polyalkylene glycol and microfifuryl cellulose.
JP59258540A 1984-12-07 1984-12-07 Readily soluble paste-like thickener Granted JPS61136534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59258540A JPS61136534A (en) 1984-12-07 1984-12-07 Readily soluble paste-like thickener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59258540A JPS61136534A (en) 1984-12-07 1984-12-07 Readily soluble paste-like thickener

Publications (2)

Publication Number Publication Date
JPS61136534A true JPS61136534A (en) 1986-06-24
JPH0419259B2 JPH0419259B2 (en) 1992-03-30

Family

ID=17321643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59258540A Granted JPS61136534A (en) 1984-12-07 1984-12-07 Readily soluble paste-like thickener

Country Status (1)

Country Link
JP (1) JPS61136534A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139641A (en) * 1996-06-24 2000-10-31 Kokusai Electric Co., Ltd. Substrate processing apparatus having a gas heating tube
JP2001131530A (en) * 1999-11-09 2001-05-15 Showa Denko Kk Thickening, gelling or solidifying agent for water and/or alcohol
JP2008297364A (en) * 2007-05-29 2008-12-11 Kyoto Univ Resin compounded with microfibrillated cellulose and method for producing the same
US8182792B2 (en) 2004-03-23 2012-05-22 Novartis Ag Pharmaceutical compositions
US9382436B2 (en) 2011-05-05 2016-07-05 Teknologian Tutkimuskeskus Vtt Method for surface modification of a body
US20180134958A1 (en) * 2015-02-16 2018-05-17 Nadia Adam Biopolymer composition for remediating degraded soils and for preventing soil erosion

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139641A (en) * 1996-06-24 2000-10-31 Kokusai Electric Co., Ltd. Substrate processing apparatus having a gas heating tube
JP2001131530A (en) * 1999-11-09 2001-05-15 Showa Denko Kk Thickening, gelling or solidifying agent for water and/or alcohol
JP4565366B2 (en) * 1999-11-09 2010-10-20 昭和電工株式会社 N-vinylacetamide resin-containing composition and water and / or alcohol thickening, gelling, and solidifying method using the same
US8182792B2 (en) 2004-03-23 2012-05-22 Novartis Ag Pharmaceutical compositions
JP2008297364A (en) * 2007-05-29 2008-12-11 Kyoto Univ Resin compounded with microfibrillated cellulose and method for producing the same
US9382436B2 (en) 2011-05-05 2016-07-05 Teknologian Tutkimuskeskus Vtt Method for surface modification of a body
US20180134958A1 (en) * 2015-02-16 2018-05-17 Nadia Adam Biopolymer composition for remediating degraded soils and for preventing soil erosion

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