JPH0665656B2 - Aluminum lactate manufacturing method - Google Patents
Aluminum lactate manufacturing methodInfo
- Publication number
- JPH0665656B2 JPH0665656B2 JP59182713A JP18271384A JPH0665656B2 JP H0665656 B2 JPH0665656 B2 JP H0665656B2 JP 59182713 A JP59182713 A JP 59182713A JP 18271384 A JP18271384 A JP 18271384A JP H0665656 B2 JPH0665656 B2 JP H0665656B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- aluminum lactate
- lactic acid
- lactate
- acid
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Description
【発明の詳細な説明】 本発明は、乳酸アルミニウムの製造方法に関する。The present invention relates to a method for producing aluminum lactate.
ここで、乳酸アルミニウムとは、乳酸アルミニウム類の
一般式 Al（CH3CHOHCOO）ｍ（OH）ｎにおいて ｍ＝３、ｎ＝０のもの、すなわち式 Al（CH3CHOHCOO）３で表わされる化合物をいう。Here, aluminum lactate is a compound of the general formula Al (CH 3 CHOHCOO) m (OH) n where m = 3 and n = 0, that is, a compound represented by the formula Al (CH 3 CHOHCOO) 3. Say.
乳酸アルミニウムは、最近、化粧品原料や工業薬品とし
ての利用が増大しつつあり、高純度の乳酸アルミニウム
の安価な供給が望まれている。Recently, aluminum lactate has been increasingly used as a raw material for cosmetics and industrial chemicals, and inexpensive supply of high-purity aluminum lactate is desired.
乳酸アルミニウムを製造するには、直接金属アルミニウ
ムと乳酸を反応させることが考えられるが、通常の方法
では金属アルミニウムと乳酸とは殆んど反応しないた
め、この方法は未だ実用化されていないのが現状であ
る。In order to produce aluminum lactate, it is conceivable to directly react metallic aluminum with lactic acid, but since the metallic aluminum and lactic acid hardly react with each other in the usual method, this method has not yet been put into practical use. The current situation.
一般的に良く知られている乳酸アルミニウムの製造法と
しては、アルミニウムのアマルガムを利用して乳酸と反
応させる方法とか、乳酸のカルシウム塩又はナトリウム
塩とアルミニウムの硫酸塩又は塩酸塩等とを反応させる
方法がある。しかし、いずれの方法も安全性又は純度の
面で問題があり、高純度の乳酸アルミニウムを安全性高
く安価に製造することは非常に困難であつた。As a generally well-known method for producing aluminum lactate, a method of reacting with lactic acid using amalgam of aluminum, or reacting a calcium salt or sodium salt of lactic acid with a sulfate salt or hydrochloride salt of aluminum, etc. There is a way. However, each method has a problem in terms of safety or purity, and it has been very difficult to produce highly pure aluminum lactate with high safety and at low cost.
本発明者等は、鋭意研究の結果、金属アルミニウムと乳
酸より乳酸アルミニウムを製造する際に、触媒として鉱
酸（硫酸、塩酸又は硝酸）及び又は鉱酸のアルミニウム
塩を用いるならば、金属アルミニウムと乳酸の直接の反
応により、短時間にしかも収率良く乳酸アルミニウムを
製造し得ることを見出し、本発明を完成するに至つた。As a result of earnest studies, the inventors of the present invention have found that if a mineral acid (sulfuric acid, hydrochloric acid or nitric acid) and / or an aluminum salt of a mineral acid is used as a catalyst when producing aluminum lactate from metal aluminum and lactic acid, then The inventors have found that aluminum lactate can be produced in a short time and in a high yield by the direct reaction of lactic acid, and have completed the present invention.
乳酸アルミニウムの製造に当つて使用する金属アルミニ
ウムは、粒状、針状、片状（箔状）、球状、角状等、如
何なる種類の形状のものでも使用可能であるが、反応速
度の面より20メツシユより小さい径のものが好ましい。The metallic aluminum used in the production of aluminum lactate can be used in any kind of shape such as granular, needle-like, flaky (foil-like), spherical, angular, etc. A diameter smaller than the mesh is preferable.
触媒としては、鉱酸（すなわち硫酸、塩酸又は硝酸）及
び又は鉱酸のアルミニウム塩が使用される。触媒の効果
は、いずれの場合も、鉱酸としての含量換算値で比較す
ると、殆んど同じである。触媒の添加量は鉱酸としての
含有量で供給乳酸に対して計算すると、0.001〜3.0重量
％好ましくは0.005〜2.5重量％が良い。Mineral acids (ie sulfuric acid, hydrochloric acid or nitric acid) and / or aluminum salts of mineral acids are used as catalysts. In any case, the effect of the catalyst is almost the same when compared in terms of content conversion value as mineral acid. The amount of the catalyst added is 0.001 to 3.0% by weight, preferably 0.005 to 2.5% by weight, calculated as the content as mineral acid and calculated with respect to the lactic acid supplied.
金属アルミニウムと乳酸の供給仕込量は、反応理論量、
即ち、金属アルミニウム１モルに対して乳酸３モルの割
合で良いが、反応速度及び乳酸アルミニウムの純度の面
から、乳酸を少過剰（金属アルミニウム１モルに対して
乳酸3.1〜3.3モル）使用することが望ましい。The supply amount of metallic aluminum and lactic acid is the theoretical reaction amount,
That is, the ratio of 3 mol of lactic acid to 1 mol of metal aluminum may be sufficient, but in view of reaction rate and purity of aluminum lactate, use a slight excess of lactic acid (3.1 to 3.3 mol of lactic acid to 1 mol of metal aluminum). Is desirable.
単位時間当りの収量を多くするため、金属アルミニウム
を反応理論量より過剰に用いることも可能であるが、製
造された乳酸アルミニウムの乳酸含有率が低い場合に
は、新らたに乳酸を供給して、更に反応を行なう必要が
ある。In order to increase the yield per unit time, it is possible to use metallic aluminum in excess of the theoretical reaction amount, but when the lactic acid content of the produced aluminum lactate is low, new lactic acid should be supplied. Therefore, it is necessary to carry out further reaction.
使用する乳酸の濃度は特に限定はないが、反応速度及び
操作上の面から、いずれの場合も10.0〜60.0重量％が好
ましい。The concentration of lactic acid used is not particularly limited, but from the viewpoint of reaction rate and operation, it is preferably 10.0 to 60.0% by weight in any case.
反応温度は還流温度、即ち100〜105℃が好ましい。The reaction temperature is preferably a reflux temperature, that is, 100 to 105 ° C.
以上述べたような条件下で乳酸アルミニウムを製造すれ
ば、金属アルミニウムと乳酸より容易に乳酸アルミニウ
ムを製造し得る。If aluminum lactate is produced under the conditions described above, aluminum lactate can be easily produced from metallic aluminum and lactic acid.
製造された乳酸アルミニウムは、水溶液の状態か、又は
一部析出した状態で存在するので、必要あれば濃縮後、
析出乳酸アルミニウムを過分離し、乾燥することによ
つて、高純度の乳酸アルミニウム粉末を得ることができ
る。この時、使用した触媒は過分離工程で母液中に除
去され、再使用が可能である。The produced aluminum lactate exists as an aqueous solution or in a partially precipitated state, so after concentration if necessary,
By highly separating the precipitated aluminum lactate and drying it, a highly pure aluminum lactate powder can be obtained. At this time, the used catalyst is removed in the mother liquor in the over-separation step and can be reused.
無触媒での乳酸アルミニウムの製造についても、種々検
討した結果、金属アルミニウムの微粉末を使用すれば乳
酸と反応することを見出したが、下記比較例にみられる
ように反応速度が遅いので、企業化するには困難があつ
た。As for the production of aluminum lactate without catalyst, as a result of various studies, it was found that fine powder of metallic aluminum reacts with lactic acid, but the reaction rate is slow as seen in the following comparative example. It was difficult to realize.
以下、本発明を実施例あによつて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。Hereinafter, the present invention will be specifically described with reference to Examples.
The present invention is not limited to these examples.
実施例 １ ２の撹拌装置を装備した反応缶に、20〜40メツシユの
金属アルミニウム27.0gと20重量％の乳酸水溶液1395.0g
及び触媒として硫酸0.14gを供給し、反応温度100〜105
℃で撹拌しながら12時間反応を行なつた。この時の収率
は100.0％であり、残存アルミニウム金属は見られなか
つた。Example 12 In a reaction can equipped with a stirrer of 2 27.0 g of metallic aluminum of 20 to 40 mesh and 1395.0 g of 20% by weight aqueous lactic acid solution.
And 0.14 g of sulfuric acid as a catalyst, and the reaction temperature was 100 to 105
The reaction was carried out for 12 hours while stirring at ℃. The yield at this time was 100.0%, and no residual aluminum metal was found.
乳酸アルミニウムの濃度を50重量％まで濃縮し、冷却
後、析出した乳酸アルミニウムを過分離し、次いで乾
燥を行ない、粉末乳酸アルミニウムを得た。その結果、
粉末乳酸アルミニウムのアルミニウムに対する純度は9
9.1％、また乳酸に対する純度は100.1％であつた。The concentration of aluminum lactate was concentrated to 50% by weight, and after cooling, the precipitated aluminum lactate was overseparated and then dried to obtain powdered aluminum lactate. as a result,
The purity of powdered aluminum lactate for aluminum is 9
The purity was 9.1% and the purity for lactic acid was 100.1%.
但し、アルミニウムに対する純度は、式 に基いて算出される。乳酸に対する純度の計算も同様で
ある。However, the purity for aluminum is It is calculated based on. The calculation of the purity for lactic acid is similar.
実施例 ２ ２の撹拌装置を装備した反応缶に、20〜40メツシユの
金属アルミニウム27.0gと20重量％の乳酸水溶液1395.0g
及び実施例No.1の乳酸アルミニウムの過分離母液320g
を供給し、実施例１と同様な条件で行なつたところ、反
応時間12時間で100％の収率が得られた。Example 22 In a reaction can equipped with a stirrer, 27.0 g of 20-40 mesh metal aluminum and 1395.0 g of 20% by weight aqueous lactic acid solution.
And 320 g of over-separated mother liquor of aluminum lactate of Example No. 1
Was added and the conditions were the same as in Example 1, and a 100% yield was obtained in a reaction time of 12 hours.
粉末乳酸アルミニウムを実施例１と同様な方法により得
た、分析を行なつた。その結果、粉末乳酸アルミニウム
のアルミニウムに対する純度は99.4％、また乳酸に対す
る純度は100.0％であつた。Powdered aluminum lactate was obtained by the same method as in Example 1 and analyzed. As a result, the purity of powdered aluminum lactate was 99.4% with respect to aluminum, and the purity with respect to lactic acid was 100.0%.
実施例 ３〜５ 実施例１の方法によつて、下表に示す条件で実施するこ
とにより、下表に示す結果を得た。Examples 3 to 5 By performing the method of Example 1 under the conditions shown in the table below, the results shown in the table below were obtained.
比較例 １〜２ 実施例１の方法によつて、下表に示す条件で実施するこ
とにより、下表に示す結果を得た。 Comparative Examples 1-2 By carrying out the method of Example 1 under the conditions shown in the table below, the results shown in the table below were obtained.
Claims (1)
ウムを製造する際に、触媒として鉱酸及び又は鉱酸のア
ルミニウム塩を用いることを特徴とする乳酸アルミニウ
ムの製造方法。1. A method for producing aluminum lactate, which comprises using a mineral acid and / or an aluminum salt of a mineral acid as a catalyst when producing aluminum lactate from metallic aluminum and lactic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59182713A JPH0665656B2 (en) | 1984-09-03 | 1984-09-03 | Aluminum lactate manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59182713A JPH0665656B2 (en) | 1984-09-03 | 1984-09-03 | Aluminum lactate manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6160631A JPS6160631A (en) | 1986-03-28 |
| JPH0665656B2 true JPH0665656B2 (en) | 1994-08-24 |
Family
ID=16123132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59182713A Expired - Fee Related JPH0665656B2 (en) | 1984-09-03 | 1984-09-03 | Aluminum lactate manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0665656B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2012843B1 (en) | 2006-04-21 | 2021-10-27 | Evonik Operations GmbH | Water-absorbent polymer structure with improved permeability and absorption under pressure and process of preparation |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0711452B8 (en) | 2006-04-21 | 2021-06-22 | Evonik Degussa Gmbh | process for preparing a water-absorbing polymeric structure, water-absorbing polymeric structure, composite, process for preparing a composite, use of the water-absorbent polymeric structure or use of the composite and use of a salt |
| US7459575B2 (en) | 2006-12-14 | 2008-12-02 | Purac Biochem B.V. | Aluminum trilactate powder and method for preparation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS585174B2 (en) * | 1980-11-05 | 1983-01-29 | 多木化学株式会社 | Method for producing basic aluminum lactate |
-
1984
- 1984-09-03 JP JP59182713A patent/JPH0665656B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2012843B1 (en) | 2006-04-21 | 2021-10-27 | Evonik Operations GmbH | Water-absorbent polymer structure with improved permeability and absorption under pressure and process of preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6160631A (en) | 1986-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |