JP4589508B2 - Method for producing sulfoalkylating agent - Google Patents

Method for producing sulfoalkylating agent Download PDF

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JP4589508B2
JP4589508B2 JP2000296687A JP2000296687A JP4589508B2 JP 4589508 B2 JP4589508 B2 JP 4589508B2 JP 2000296687 A JP2000296687 A JP 2000296687A JP 2000296687 A JP2000296687 A JP 2000296687A JP 4589508 B2 JP4589508 B2 JP 4589508B2
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salt
compound
sulfoalkylating agent
acid
producing
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JP2002105068A (en
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伸司 露谷
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、化粧品、トイレタリー製品、外用医薬品、水溶性塗料、建材等への増粘剤、活性剤、ゲル化剤、エマルジョン剤等の製造に用いられるスルホアルキル化剤であって、副生塩が少なく且つ効率的な反応を行うことができるスルホアルキル化剤の製造法に関する。
さらに、そのスルホアルキル化剤とヒドロキシル化合物とを反応させるスルホアルキル化体の製造法に関する。
【0002】
【従来の技術及び発明が解決しようとする課題】
ヒドロキシル化合物から、そのスルホアルキル化体を得る際、スルホアルキル化剤として、ヒドロキシル基を有していてもよいハロアルカンスルホン酸、又はそれらの塩(以後、「ハロアルカンスルホン酸等」という)が用いられることが多い。これらをスルホアルキル化剤として用いる場合、反応系にアルカリ化合物を共存させることにより反応を行う。
【0003】
しかしこの方法でスルホアルキル化反応を行うと、用いたハロアルカンスルホン酸等とほぼ等モルのハロゲン化塩が副生する。スルホアルキル化反応物を製品等に配合する際、スルホアルキル化反応物中に含まれるハロゲン化塩は用途によっては配合の自由度、性能、粘度及び安定性等に問題を生じる。
【0004】
そのためスルホアルキル化反応物からハロゲン化塩を除去するためには、抽出、電気透析、晶析、限外濾過等の精製方法による必要があるが、これらの方法では精製負荷が大きく、その結果、設備投資額が大きくなると共に製造コストを増大させるという問題点があった。
【0005】
本発明の課題は、簡便な方法により効率的にハロゲン化塩の副生を低減できる、生産効率の良いスルホアルキル化剤の製造法を提供することである。
【0006】
さらに、そのスルホアルキル化剤とヒドロキシル化合物とを反応させて、ハロゲン化塩の低減されたヒドロキシル化合物のスルホアルキル化体を効率良く製造する方法を提供することである。
【0007】
【課題を解決するための手段】
本発明は、ヒドロキシル基を有する炭素数2〜5のハロアルカンスルホン酸又はその塩とアルカリ化合物を反応させて、エポキシ基を有するアルカンスルホン酸塩及びハロゲン化塩を得た後、該ハロゲン化塩を分離する、エポキシ基を有するアルカンスルホン酸塩(以後、「スルホアルキル化剤」という)の製造法に関する。
本発明はまた、このようにして得られたスルホアルキル化剤をヒドロキシル化合物と反応させることによる、ヒドロキシル化合物のスルホアルキル化体の製造法に関する。
【0008】
【発明の実施の形態】
ヒドロキシル基を有する炭素数2〜5のハロアルカンスルホン酸(以後、「ハロヒドロキシアルカンスルホン酸」という)又はその塩として、例えば次の式(1)で表されるものが挙げられる。
【0009】
ACH2CH(OH)(CH2)nSO3M (1)
【0010】
[式中、A:ハロゲン原子、好ましくは塩素原子、M:水素原子、アルカリ金属原子、アルカリ土類金属原子又はアンモニウム、好ましくは水素原子、ナトリウム原子又はカリウム原子、n:1〜3の数を表す]
炭素数が5以内では疎水性が適度になり、ハロゲン化塩との分離が容易となる。
【0011】
アルカリ化合物として、特に限定されないが反応性の観点からアルカリ金属の水酸化物が好ましく、水酸化ナトリウム及び水酸化カリウムが更に好ましい。
【0012】
ハロヒドロキシアルカンスルホン酸を使用する場合、アルカリ化合物の量はハロヒドロキシアルカンスルホン酸に対して、好ましくは1.5〜2.1モル倍、より好ましくは1.8〜2.05モル倍である。1.5モル倍以上にするとスルホアルキル化剤の収量とハロゲン化塩の除去率が高くなる。また2.1モル倍以下にすると過剰のアルカリ化合物によりスルホアルキル化剤が水と反応し分解するということが起こりにくい。
【0013】
ハロヒドロキシアルカンスルホン酸塩を使用する場合、アルカリ化合物の量はハロヒドロキシアルカンスルホン酸塩に対して、好ましくは0.5〜1.1モル倍量、より好ましくは0.8〜1.05モル倍である。0.5モル倍以上にするとスルホアルキル化剤の収量とハロゲン化塩の除去率が高くなる。また1.1モル倍以下にすると過剰のアルカリ化合物によりスルホアルキル化剤が水と反応し分解するということが起こりにくい。
【0014】
ハロヒドロキシアルカンスルホン酸又はその塩とアルカリ化合物とを反応させてスルホアルキル化剤を調製する場合、ハロゲン化塩を析出させるという観点から、水の量はハロヒドロキシアルカンスルホン酸又はその塩に対して好ましくは0.1〜1.2重量倍、より好ましくは0.2〜0.8重量倍である。0.1重量倍以上とするとハロゲン化塩が析出したスラリーの濃度が適度であり、操作上の問題が生じないし、スルホアルキル化剤の収率が向上する。また1.2重量倍以下とすることよりハロゲン化塩の溶解量が少なくなりハロゲン化塩の析出量が多くなる。ハロゲン化塩の析出量が少ないと水溶液になることもあるので、本発明では、スラリーには水溶液の概念も含める。
【0015】
ハロヒドロキシアルカンスルホン酸又はその塩とアルカリ化合物との反応方法は特に限定されないが、ハロヒドロキシアルカンスルホン酸又はその塩の水溶液にアルカリ化合物を滴下することが好ましい。滴下時間は0.5〜5時間で行うことが好ましく、その後0.1〜3時間熟成反応を行うことが好ましい。
【0016】
ハロヒドロキシアルカンスルホン酸又はその塩は水溶液として取り扱われるのが好ましく、含まれる水の量が上記の量よりも多い場合には水を蒸留等により系外に除去して行うのが望ましい。この場合、先に水を除去しアルカリ化合物を加えても良いし、先にアルカリ化合物を加えた後、水を除去しても良く、また水の除去前後においてアルカリ化合物を分割して添加しても良い。
【0017】
反応後、ハロゲン化塩を冷却、放置等により析出させれば、水に溶解したスルホアルキル化剤と析出物としてのハロゲン化塩の混合物が得られる。
【0018】
析出したハロゲン化塩の分離方法は特に限定されないが、遠心分離、濾過、抽出、電気透析、晶析、限外濾過等が用いられ、本発明のスルホアルキル化剤を得ることができる。
【0019】
アルカリ化合物の添加、析出及び分離の処理温度としては−10〜40℃、好ましくは0〜20℃にて行うことが望ましい。−10℃以上にすると水溶液が増粘せず、スルホアルキル化剤の収率が向上し、また40℃以下とすると生成するスルホアルキル化剤の分解が少なくなる傾向がある。
【0020】
またこの方法によって得られたスルホアルキル化剤を用いてヒドロキシル化合物をスルホアルキル化し、ヒドロキシル化合物のヒドロキシル基の水素原子の一部又は全てがスルホアルキル基又はその塩で置換された、ヒドロキシル化合物のスルホアルキル化体を得ることができる。
【0021】
ヒドロキシル化合物としては、多糖類が挙げられる。
【0022】
多糖類としては特開平9−110901号第3項第4欄第39行〜第50行に記載されているものが挙げられ、なかでもセルロース、ヒドロキシエチルセルロース、メチルセルロース、エチルセルロース、ヒドロシキプロピルセルロース等のセルロース及びセルロース構造を有する化合物が好ましい。オキシカルボニル基又はエーテル結合が挿入されていてもよい炭素数10〜43の直鎖又は分岐鎖のアルキル基、アルケニル基又はアシル基で水酸基の水素原子が置換された多糖誘導体であってもよい。置換度は好ましくは構成単糖当たり0.0001〜0.1である。
【0023】
反応に使用する、スルホアルキル化剤の量はヒドロキシル化合物へのスルホアルキル基の導入量によるが、ヒドロキシル化合物に対して(多糖類に対しては構成単糖当たり)0.01〜5モル倍量、好ましくは0.05〜2モル倍量が望ましい。また添加方法として一括、分割又は滴下添加が挙げられるが、分割又は滴下方法が好ましい。
【0024】
スルホアルキル化反応はアルカリ化合物の存在下で行われるのが好ましく、アルカリ化合物として、水酸化ナトリウム及び水酸化カリウムが好ましく、スルホアルキル化剤水溶液を調製する際に用いたアルカリ化合物を除去せずに用いるのが好ましい。系中に存在させるアルカリ化合物の量はヒドロキシル化合物に対して(多糖類に対しては構成単糖当たり)0.01〜5モル倍が好ましい。
【0025】
スルホアルキル化反応の溶媒として炭素数3〜5の低級アルコール、例えばイソプロピルアルコール、ターシャリー−ブチルアルコール等が挙げられる。その使用量はヒドロキシル化合物に対して0.05〜25重量倍で行うことができる。また反応性を良くするため水を前記低級アルコールに対して0.01〜2.0重量倍加えて反応を行ってもよい。
【0026】
反応温度は好ましくは10〜80℃、より好ましくは20〜50℃の範囲である。反応は好ましくは1〜30時間行い、終了後は酸化合物を用いてアルカリ化合物を中和する。用いられる酸化合物としては硫酸、塩酸、リン酸等の無機酸、酢酸等の有機酸を用いることができる。
【0027】
このようにして得られたスルホアルキル化体は必要に応じて濾過、乾燥等を行うことができる。
【0028】
【実施例】
【0029】
合成例1
攪拌機、温度計及び真空設備を備えた500mLのガラス製反応容器に35%重亜硫酸ナトリウム水溶液178.4g、48%水酸化ナトリウム水溶液1.5gを仕込み、撹拌しながら60℃に昇温した。そこにエピクロルヒドリン54.4gを温度55〜65℃の範囲にて1時間かけて滴下し、その後70℃に昇温し2時間反応を行い、微量の反応物を取り出し、反応物の未反応のエピクロルヒドリンが10ppm以下であることをガスクロマトグラフィーで確認後、10℃に冷却して、3−クロロ−2−ヒドロキシプロパンスルホン酸ナトリウムを含むスラリーを得た。
【0030】
実施例1
合成例1で得られた、3−クロロ−2−ヒドロキシプロパンスルホン酸ナトリウムを含むスラリーを収納した反応容器中に48%水酸化ナトリウム水溶液13.2gを0.3時間かけて滴下した。9〜10kPaに減圧し、40〜50℃にて水78.8gを系外に留出させた。その後10〜15℃にて48%水酸化ナトリウム水溶液34.0gを0.5時間かけて滴下し、そのまま1時間反応を行い、2,3−エポキシプロパンスルホン酸ナトリウム及び塩化ナトリウム析出物を含むスラリーを得た。
【0031】
ヌッチェにて濾紙2号を用いて上記スラリーの濾過を10〜12℃にて行い、2,3−エポキシプロパンスルホン酸ナトリウムを含む水溶液143.6gを濾液として、また塩化ナトリウムを含むケーク50.1gを濾過残として得た。濾液の分析結果及び脱塩率を表1に示した。尚、脱塩率(%)は、式(2)によって計算される。
【0032】
【数1】

Figure 0004589508
【0033】
実施例2
攪拌機、温度計を備えた300mLのガラス製反応容器に、合成例1の方法で別に合成して得られた3−クロロ−2−ヒドロキシプロパンスルホン酸ナトリウムを含むスラリーを乾燥して得られた粉末70.5g及び水13.1gを入れ、5℃にした後、48%水酸化カリウム水溶液41.8gを10〜12℃にて0.5時間かけて滴下し、その後5℃にて1時間反応を行い、2,3−エポキシプロパンスルホン酸ナトリウム及び塩化カリウム析出物を含むスラリーを得た。
【0034】
ヌッチェにて濾紙2号を用いて上記スラリーの濾過を15℃にて行い、2,3−エポキシプロパンスルホン酸ナトリウムを含む水溶液95.6gを濾液として、また塩化カリウムを含むケーク29.8gを濾過残として得た。濾液の分析結果及び脱塩率を表1に示した。
【0035】
【表1】
Figure 0004589508
【0036】
実施例3
攪拌機、温度計及び冷却管を備えた1000mLのガラス製反応容器にヒドロキシエチルセルロース(構成単糖当たりの平均分子量250、ユニオンカーバイト社製、商品名:QP15000H LOT.NO W8077P)40g、イソプロピルアルコール178.0g、イオン交換水31.4gを加え、スラリーを調製した。窒素雰囲気下にて48%水酸化ナトリウム水溶液2.7gを加えて40℃に昇温した。そこに実施例1で得られた2,3−エポキシプロパンスルホン酸ナトリウム水溶液(48.9wt%)52.4g(1.0モル倍、対ヒドロキシエチルセルロース)を加えて、40℃で12時間スルホアルキル化反応を行った。その後30℃まで冷却し、85%リン酸1.5gを用いて中和を行った。得られたた多糖類スルホアルキル化体スラリーをヌッチェにて濾紙2を用いて濾別し、1kPa以下の減圧下70℃にて12時間乾燥後、粉砕を行い黄白色粉体の多糖類スルホアルキル化体65.4gを得た。分析値を表2に示した。
【0037】
合成例2
攪拌機、温度計を備えた500mLのガラス製反応容器に35%重亜硫酸ナトリウム水溶液178.4g、48%水酸化ナトリウム水溶液0.4gを仕込み、撹拌しながら60℃に昇温した。そこにエピクロルヒドリン54.4gを温度55〜65℃の範囲にて1時間かけて滴下し、その後70℃に昇温し2時間反応を行い3−クロロ−2−ヒドロキシプロパンスルホン酸ナトリウムを得た。未反応のエピクロルヒドリンが10ppm以下であることをガスクロマトグラフィーで確認し、45℃に冷却後、水152.2gを加えて均一透明な30.0wt%の3−クロロ−2−ヒドロキシプロパンスルホン酸ナトリウム水溶液を得た。
【0038】
比較例1
実施例1で得られた2,3−エポキシプロパンスルホン酸ナトリウム水溶液(48.9wt%)52.4g(1.0モル倍、対ヒドロキシエチルセルロース)の代わりに、合成例2で得られた3−クロロ−2−ヒドロキシプロパンスルホン酸ナトリウム水溶液(30.0wt%)を104.9g(1.0モル倍、対ヒドロキシエチルセルロース)、48%水酸化ナトリウム水溶液13.3gを加えた以外は実施例3と同様にして、黄白色粉体の多糖類スルホアルキル化体71.0gを得た。分析値を表2に示した。
【0039】
【表2】
Figure 0004589508
【0040】
試験例
実施例3及び比較例1で得られたスルホアルキル化体をそれぞれコンクリート用薬剤(メタクリル酸/メトキシポリエチレングリコールメタクリレート(8/2)共重合体Na塩20%水溶液)に0.5%配合し40℃にて分散安定性試験を行った結果、実施例3で得られたスルホアルキル化体を用いた薬剤については安定性等問題はなかった。しかし比較例1で得られたスルホアルキル化体を用いた薬剤については安定性が悪く分離した。
【0041】
【発明の効果】
本発明によれば、副生物であるハロゲン化塩を、簡便な方法により効率的に低減でき、効率的な反応を行うことのできるスルホアルキル化剤を得ることができる。
さらに、そのスルホアルキル化剤とヒドロキシル化合物を反応させ、ハロゲン化塩の低減されたスルホアルキル化体を効率的に得ることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sulfoalkylating agent used in the production of cosmetics, toiletry products, external medicines, water-soluble paints, thickeners for building materials, activators, gelling agents, emulsion agents, etc. The present invention relates to a process for producing a sulfoalkylating agent that can carry out an efficient reaction with a low content.
Further, the present invention relates to a method for producing a sulfoalkylated product in which the sulfoalkylating agent is reacted with a hydroxyl compound.
[0002]
[Prior art and problems to be solved by the invention]
When obtaining a sulfoalkylated product from a hydroxyl compound, a haloalkanesulfonic acid which may have a hydroxyl group or a salt thereof (hereinafter referred to as “haloalkanesulfonic acid etc.”) is used as a sulfoalkylating agent. There are many cases. When these are used as sulfoalkylating agents, the reaction is carried out in the presence of an alkali compound in the reaction system.
[0003]
However, when the sulfoalkylation reaction is carried out by this method, a nearly equal mole of a halogenated salt is produced as a by-product with the haloalkanesulfonic acid used. When the sulfoalkylation reaction product is blended into a product or the like, the halogenated salt contained in the sulfoalkylation reaction product causes problems in the degree of freedom of blending, performance, viscosity, stability, etc. depending on the application.
[0004]
Therefore, in order to remove the halogenated salt from the sulfoalkylation reaction product, it is necessary to use purification methods such as extraction, electrodialysis, crystallization, and ultrafiltration. However, these methods have a large purification load, and as a result, There was a problem that the manufacturing cost increased as the capital investment amount increased.
[0005]
An object of the present invention is to provide a method for producing a sulfoalkylating agent with high production efficiency, which can efficiently reduce by-products of a halide salt by a simple method.
[0006]
Furthermore, it is to provide a method for efficiently producing a sulfoalkylated product of a hydroxyl compound having a reduced halogenated salt by reacting the sulfoalkylating agent with a hydroxyl compound.
[0007]
[Means for Solving the Problems]
In the present invention, after reacting a haloalkanesulfonic acid having 2 to 5 carbon atoms having a hydroxyl group or a salt thereof with an alkali compound to obtain an alkanesulfonic acid salt or halogenated salt having an epoxy group, the halogenated salt is The present invention relates to a method for producing an alkanesulfonate having an epoxy group to be separated (hereinafter referred to as “sulfoalkylating agent”).
The present invention also relates to a method for producing a sulfoalkylated product of a hydroxyl compound by reacting the thus obtained sulfoalkylating agent with a hydroxyl compound.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the haloalkanesulfonic acid having a hydroxyl group and having 2 to 5 carbon atoms (hereinafter referred to as “halohydroxyalkanesulfonic acid”) or a salt thereof include those represented by the following formula (1).
[0009]
ACH 2 CH ( OH ) (CH 2 ) n SO 3 M (1)
[0010]
[Wherein, A: halogen atom, preferably chlorine atom, M: hydrogen atom, alkali metal atom, alkaline earth metal atom or ammonium, preferably hydrogen atom, sodium atom or potassium atom, n: a number of 1 to 3. To express]
When the number of carbon atoms is within 5, the hydrophobicity becomes appropriate and separation from the halide salt becomes easy.
[0011]
Although it does not specifically limit as an alkali compound, From a reactive viewpoint, the hydroxide of an alkali metal is preferable, and sodium hydroxide and potassium hydroxide are still more preferable.
[0012]
When halohydroxyalkanesulfonic acid is used, the amount of the alkali compound is preferably 1.5 to 2.1 mol times, more preferably 1.8 to 2.05 mol times with respect to the halohydroxyalkanesulfonic acid. . When it is 1.5 mole times or more, the yield of the sulfoalkylating agent and the removal rate of the halide salt increase. On the other hand, when the amount is 2.1 mol times or less, it is difficult for the sulfoalkylating agent to react with water and decompose due to excess alkali compound.
[0013]
When a halohydroxyalkanesulfonate is used, the amount of the alkali compound is preferably 0.5 to 1.1 moles, more preferably 0.8 to 1.05 moles, relative to the halohydroxyalkanesulfonate. Is double. When the molar ratio is 0.5 mol or more, the yield of the sulfoalkylating agent and the removal rate of the halide salt are increased. On the other hand, when the amount is 1.1 mole times or less, it is difficult for the sulfoalkylating agent to react with water and decompose due to excess alkali compound.
[0014]
When preparing a sulfoalkylating agent by reacting a halohydroxyalkanesulfonic acid or a salt thereof with an alkali compound, the amount of water is relative to the halohydroxyalkanesulfonic acid or a salt thereof from the viewpoint of precipitating a halogenated salt. Preferably it is 0.1 to 1.2 weight times, More preferably, it is 0.2 to 0.8 weight times. When the concentration is 0.1 times by weight or more, the concentration of the slurry on which the halide salt is precipitated is moderate, no operational problems occur, and the yield of the sulfoalkylating agent is improved. Further, when the amount is 1.2 weight times or less, the dissolved amount of the halide salt is reduced and the precipitated amount of the halide salt is increased. In the present invention, the concept of an aqueous solution is also included in the slurry, because if the precipitation amount of the halide salt is small, an aqueous solution may be formed.
[0015]
Although the reaction method of halohydroxyalkanesulfonic acid or its salt and an alkali compound is not specifically limited, It is preferable to dripped an alkaline compound in the aqueous solution of halohydroxyalkanesulfonic acid or its salt. The dropping time is preferably 0.5 to 5 hours, and then the aging reaction is preferably performed for 0.1 to 3 hours.
[0016]
The halohydroxyalkanesulfonic acid or a salt thereof is preferably handled as an aqueous solution. When the amount of water contained is larger than the above amount, it is desirable to remove the water out of the system by distillation or the like. In this case, water may be removed first and an alkali compound may be added, or water may be removed after the alkali compound has been added first, and the alkali compound may be added separately before and after the removal of water. Also good.
[0017]
After the reaction, if the halogenated salt is precipitated by cooling, standing or the like, a mixture of the sulfoalkylating agent dissolved in water and the halogenated salt as a precipitate can be obtained.
[0018]
The method for separating the precipitated halide salt is not particularly limited, but centrifugation, filtration, extraction, electrodialysis, crystallization, ultrafiltration and the like can be used to obtain the sulfoalkylating agent of the present invention.
[0019]
The treatment temperature for addition, precipitation and separation of the alkali compound is −10 to 40 ° C., preferably 0 to 20 ° C. When the temperature is higher than −10 ° C., the aqueous solution does not thicken, the yield of the sulfoalkylating agent is improved, and when the temperature is lower than 40 ° C., decomposition of the generated sulfoalkylating agent tends to be reduced.
[0020]
Also, the sulfo group of the hydroxyl compound is obtained by sulfoalkylating a hydroxyl compound using the sulfoalkylating agent obtained by this method, wherein some or all of the hydrogen atoms of the hydroxyl group of the hydroxyl compound are substituted with a sulfoalkyl group or a salt thereof. An alkylated product can be obtained.
[0021]
Examples of the hydroxyl compound include polysaccharides.
[0022]
Examples of the polysaccharide include those described in JP-A No. 9-110901, paragraph 3, column 4, lines 39 to 50. Among them, cellulose, hydroxyethyl cellulose, methyl cellulose, ethyl cellulose, hydroxypropyl cellulose, etc. A cellulose and a compound having a cellulose structure are preferred. It may be a polysaccharide derivative in which a hydrogen atom of a hydroxyl group is substituted with a linear or branched alkyl group, alkenyl group or acyl group having 10 to 43 carbon atoms into which an oxycarbonyl group or an ether bond may be inserted. The degree of substitution is preferably from 0.0001 to 0.1 per constituent monosaccharide.
[0023]
The amount of the sulfoalkylating agent used in the reaction depends on the amount of sulfoalkyl group introduced into the hydroxyl compound, but is 0.01 to 5 mole times the hydroxyl compound (per polysaccharide constituting polysaccharide). The amount is preferably 0.05 to 2 mole times. The addition method includes batch, division, or dropwise addition, but the division or dropwise addition method is preferred.
[0024]
The sulfoalkylation reaction is preferably carried out in the presence of an alkali compound, and as the alkali compound, sodium hydroxide and potassium hydroxide are preferable, without removing the alkali compound used in preparing the aqueous sulfoalkylating agent solution. It is preferable to use it. The amount of the alkali compound to be present in the system is preferably 0.01 to 5 mol times based on the hydroxyl compound (per constituent monosaccharide for the polysaccharide).
[0025]
Examples of the solvent for the sulfoalkylation reaction include lower alcohols having 3 to 5 carbon atoms such as isopropyl alcohol and tertiary-butyl alcohol. The amount used can be 0.05 to 25 times by weight with respect to the hydroxyl compound. In order to improve the reactivity, the reaction may be carried out by adding water in an amount of 0.01 to 2.0 times by weight with respect to the lower alcohol.
[0026]
The reaction temperature is preferably in the range of 10 to 80 ° C, more preferably 20 to 50 ° C. The reaction is preferably carried out for 1 to 30 hours, and after completion, the alkali compound is neutralized with an acid compound. As the acid compound to be used, inorganic acids such as sulfuric acid, hydrochloric acid and phosphoric acid, and organic acids such as acetic acid can be used.
[0027]
The sulfoalkylated product thus obtained can be filtered, dried, etc., if necessary.
[0028]
【Example】
[0029]
Synthesis example 1
A 500 mL glass reaction vessel equipped with a stirrer, a thermometer and vacuum equipment was charged with 178.4 g of 35% aqueous sodium bisulfite solution and 1.5 g of 48% aqueous sodium hydroxide, and the temperature was raised to 60 ° C. while stirring. There, 54.4 g of epichlorohydrin was added dropwise over a period of 1 hour within a temperature range of 55 to 65 ° C., then the temperature was raised to 70 ° C. and the reaction was conducted for 2 hours. Was confirmed to be 10 ppm or less by gas chromatography, and then cooled to 10 ° C. to obtain a slurry containing sodium 3-chloro-2-hydroxypropanesulfonate.
[0030]
Example 1
In a reaction vessel containing the slurry containing sodium 3-chloro-2-hydroxypropanesulfonate obtained in Synthesis Example 1, 13.2 g of 48% aqueous sodium hydroxide solution was added dropwise over 0.3 hours. The pressure was reduced to 9 to 10 kPa, and 78.8 g of water was distilled out of the system at 40 to 50 ° C. Thereafter, 34.0 g of a 48% sodium hydroxide aqueous solution was added dropwise at 10 to 15 ° C. over 0.5 hours, and the reaction was carried out for 1 hour as it was, and a slurry containing sodium 2,3-epoxypropanesulfonate and sodium chloride precipitates. Got.
[0031]
The slurry was filtered at 10-12 ° C. using filter paper No. 2 in Nutsche, and 143.6 g of an aqueous solution containing sodium 2,3-epoxypropanesulfonate was used as a filtrate, and 50.1 g of a cake containing sodium chloride. Was obtained as a filtration residue. The analysis results and the desalting rate of the filtrate are shown in Table 1. Incidentally, the desalting rate (%) is calculated by the equation (2).
[0032]
[Expression 1]
Figure 0004589508
[0033]
Example 2
Powder obtained by drying a slurry containing sodium 3-chloro-2-hydroxypropanesulfonate obtained by another synthesis by the method of Synthesis Example 1 in a 300 mL glass reaction vessel equipped with a stirrer and a thermometer After adding 70.5 g and 13.1 g of water to 5 ° C., 41.8 g of 48% potassium hydroxide aqueous solution was added dropwise at 10-12 ° C. over 0.5 hours, and then reacted at 5 ° C. for 1 hour. And a slurry containing sodium 2,3-epoxypropanesulfonate and potassium chloride precipitate was obtained.
[0034]
The slurry was filtered at 15 ° C. using filter paper No. 2 at Nutsche, and 95.6 g of an aqueous solution containing sodium 2,3-epoxypropanesulfonate was used as a filtrate, and 29.8 g of a cake containing potassium chloride was filtered. Got as the rest. The analysis results and the desalting rate of the filtrate are shown in Table 1.
[0035]
[Table 1]
Figure 0004589508
[0036]
Example 3
In a 1000 mL glass reaction vessel equipped with a stirrer, a thermometer, and a condenser tube, hydroxyethyl cellulose (average molecular weight 250 per constituent monosaccharide, manufactured by Union Carbide, trade name: QP15000H LOT.NO W8077P) 40 g, isopropyl alcohol 178. 0 g and 31.4 g of ion-exchanged water were added to prepare a slurry. Under a nitrogen atmosphere, 2.7 g of a 48% aqueous sodium hydroxide solution was added and the temperature was raised to 40 ° C. Thereto was added 52.4 g of an aqueous sodium 2,3-epoxypropanesulfonate (48.9 wt%) obtained in Example 1 (1.0 mol times, vs. hydroxyethyl cellulose), and sulfoalkyl at 40 ° C. for 12 hours. The reaction was carried out. Thereafter, the mixture was cooled to 30 ° C., and neutralized with 1.5 g of 85% phosphoric acid. The obtained polysaccharide sulfoalkylated slurry was filtered with a filter paper 2 in Nutsche, dried at 70 ° C. under reduced pressure of 1 kPa or less for 12 hours, and then pulverized to give a yellowish white powdered polysaccharide sulfoalkyl. 65.4 g of a compound was obtained. The analytical values are shown in Table 2.
[0037]
Synthesis example 2
A 500 mL glass reaction vessel equipped with a stirrer and a thermometer was charged with 178.4 g of 35% sodium bisulfite aqueous solution and 0.4 g of 48% sodium hydroxide aqueous solution and heated to 60 ° C. while stirring. Epichlorohydrin 54.4g was dripped there in the range of the temperature of 55-65 degreeC over 1 hour, and it heated up at 70 degreeC after that, and reacted for 2 hours, and sodium 3-chloro- 2-hydroxypropane sulfonate was obtained. It was confirmed by gas chromatography that the amount of unreacted epichlorohydrin was 10 ppm or less, and after cooling to 45 ° C., 152.2 g of water was added and 30.0 wt% of sodium 3-chloro-2-hydroxypropanesulfonate was uniformly transparent. An aqueous solution was obtained.
[0038]
Comparative Example 1
Instead of 52.4 g (1.0 mol times vs. hydroxyethyl cellulose) of the aqueous 2,3-epoxypropanesulfonate aqueous solution (48.9 wt%) obtained in Example 1, the 3- Example 3 with the exception that 104.9 g (1.0 mole times, vs. hydroxyethylcellulose) of sodium chloro-2-hydroxypropanesulfonate aqueous solution (30.0 wt%) and 13.3 g of 48% sodium hydroxide aqueous solution were added. Similarly, 71.0 g of a polysaccharide sulfoalkylated product of yellowish white powder was obtained. The analytical values are shown in Table 2.
[0039]
[Table 2]
Figure 0004589508
[0040]
Test Example In each of the sulfoalkylated products obtained in Example 3 and Comparative Example 1, 0.5% was added to concrete chemicals (methacrylic acid / methoxypolyethylene glycol methacrylate (8/2) copolymer Na salt 20% aqueous solution). As a result of conducting a dispersion stability test at 40 ° C., there was no problem such as stability in the drug using the sulfoalkylated product obtained in Example 3. However, the drug using the sulfoalkylated product obtained in Comparative Example 1 was poor in stability and separated.
[0041]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the halogenated salt which is a by-product can be reduced efficiently by a simple method, and the sulfo alkylating agent which can perform an efficient reaction can be obtained.
Further, the sulfoalkylating agent having a reduced halogenated salt can be efficiently obtained by reacting the sulfoalkylating agent with a hydroxyl compound.

Claims (4)

ヒドロキシル基を有する炭素数2〜5のハロアルカンスルホン酸又はその塩とアルカリ化合物とを、該ハロアルカンスルホン酸又はその塩に対して0.2〜1.2重量倍の水の存在下、反応させて、エポキシ基を有するアルカンスルホン酸塩及びハロゲン化塩を得た後、該ハロゲン化塩をろ過及び/又は遠心分離の操作を含む分離工程によって分離する、エポキシ基を有するアルカンスルホン酸塩(以後、「スルホアルキル化剤」という)の製造法。A haloalkanesulfonic acid having 2 to 5 carbon atoms having a hydroxyl group or a salt thereof and an alkali compound are reacted in the presence of 0.2 to 1.2 times by weight of water with respect to the haloalkanesulfonic acid or a salt thereof. The alkanesulfonate having an epoxy group is obtained by obtaining an alkanesulfonate having an epoxy group and a halogenated salt, and then separating the halogenated salt by a separation step including an operation of filtration and / or centrifugation. A production method of “sulfoalkylating agent”. 水の量が、ハロアルカンスルホン酸又はその塩に対して0.2〜0.8重量倍である、請求項1記載の製造法。  The manufacturing method of Claim 1 whose quantity of water is 0.2 to 0.8 weight times with respect to haloalkanesulfonic acid or its salt. ヒドロキシル化合物とスルホアルキル化剤とを反応させることによる、ヒドロキシル基の水素原子の一部又は全てがスルホアルキル基又はその塩で置換されたスルホアルキル化体の製造法であって、スルホアルキル化剤として請求項1又は2記載の製造法で得られたエポキシ基を有するアルカンスルホン酸塩を用いる、スルホアルキル化体の製造法。  A process for producing a sulfoalkylated product in which some or all of the hydrogen atoms of a hydroxyl group are substituted with a sulfoalkyl group or a salt thereof by reacting a hydroxyl compound with a sulfoalkylating agent, comprising: A process for producing a sulfoalkylated product using an alkanesulfonate having an epoxy group obtained by the process according to claim 1 or 2. ヒドロキシル化合物が多糖類である、請求項3記載のスルホアルキル化体の製造法。  The method for producing a sulfoalkylated product according to claim 3, wherein the hydroxyl compound is a polysaccharide.
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JPS53114990A (en) * 1977-03-17 1978-10-06 Iws Nominee Co Ltd Resist style agent and production and use thereof
EP0001811A1 (en) * 1977-10-28 1979-05-16 Benckiser-Knapsack GmbH N-sulfohydroxyalkane-aminoalkanephosphonic acids and their salts, process for their preparation and their use as complex-forming agent
JPH04146901A (en) * 1990-10-11 1992-05-20 Oji Paper Co Ltd Fibrous, highly water-absorptive cellulosic substance
JPH07159921A (en) * 1993-12-02 1995-06-23 Canon Inc Dry silver salt photosensitive body
WO2000005227A1 (en) * 1998-07-24 2000-02-03 Samsung Fine Chemicals Co., Ltd. Process for manufacturing an optically active (s)-3,4-epoxybutyric acid salt

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114990A (en) * 1977-03-17 1978-10-06 Iws Nominee Co Ltd Resist style agent and production and use thereof
EP0001811A1 (en) * 1977-10-28 1979-05-16 Benckiser-Knapsack GmbH N-sulfohydroxyalkane-aminoalkanephosphonic acids and their salts, process for their preparation and their use as complex-forming agent
JPH04146901A (en) * 1990-10-11 1992-05-20 Oji Paper Co Ltd Fibrous, highly water-absorptive cellulosic substance
JPH07159921A (en) * 1993-12-02 1995-06-23 Canon Inc Dry silver salt photosensitive body
WO2000005227A1 (en) * 1998-07-24 2000-02-03 Samsung Fine Chemicals Co., Ltd. Process for manufacturing an optically active (s)-3,4-epoxybutyric acid salt

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