JPH0665656B2 - Process for the preparation of aluminum lactate - Google Patents

Process for the preparation of aluminum lactate

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Publication number
JPH0665656B2
JPH0665656B2 JP18271384A JP18271384A JPH0665656B2 JP H0665656 B2 JPH0665656 B2 JP H0665656B2 JP 18271384 A JP18271384 A JP 18271384A JP 18271384 A JP18271384 A JP 18271384A JP H0665656 B2 JPH0665656 B2 JP H0665656B2
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JP
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Prior art keywords
aluminum
aluminum lactate
lactate
lactic acid
purity
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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
Application number
JP18271384A
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Japanese (ja)
Other versions
JPS6160631A (en )
Inventor
里美 村松
伸子 柿田
三利 砂原
Original Assignee
株式会社武蔵野化学研究所
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of products other than chlorine, adipic acid, caprolactam, or chlorodifluoromethane, e.g. bulk or fine chemicals or pharmaceuticals
    • Y02P20/52Improvements relating to the production of products other than chlorine, adipic acid, caprolactam, or chlorodifluoromethane, e.g. bulk or fine chemicals or pharmaceuticals 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。 Description of the Invention 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(CH 3 CHOHCOO)m(OH)nにおいて m=3、n=0のもの、すなわち式 Al(CH 3 CHOHCOO) で表わされる化合物をいう。 Here, the aluminum lactate, those m = 3, n = 0 in lactic formula Al (CH 3 CHOHCOO) aluminum compound m (OH) n, i.e. 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。 Aluminum lactate is, recently, there is growing use of as a cosmetic raw materials and industrial chemicals, low-cost 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。 To produce the aluminum lactate is considered be reacted directly metallic aluminum lactate, since the conventional method does not throat react N 殆 the metallic aluminum and lactic acid, that this method has not yet been put to practical use in the present circumstances.

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。 Methods for producing aluminum lactate, which is generally well known, react Toka method utilizing aluminum amalgam is reacted with lactic acid, and a calcium salt or sodium salt and aluminum sulfate or hydrochloride salt of lactic acid there is a method. 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。 However, either method has a problem in terms of safety or purity, it is been made very difficult to inexpensively produced safely with high high-purity aluminum lactate.

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。 The present inventors have conducted extensive research results in producing a more aluminum lactate metal aluminum lactate, mineral acid as catalyst, if an aluminum salt (sulfuric acid, hydrochloric acid or nitric acid) and or mineral acids, and metallic aluminum by direct reaction of lactic acid, found moreover that may produce a good yield aluminum lactate in a short time, ItaruTsuta 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。 Metallic aluminum to those connexion used for the production of aluminum lactate are granular, acicular, flaky (foil), spherical, angular or the like, but may also be used of any type of shape, 20 from the surface of the reaction rate It is preferred for smaller diameter than the mesh screen.

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。 As the catalyst, mineral acids (i.e. sulfuric acid, hydrochloric acid or nitric acid) aluminum salts and or mineral is used. 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。 The effect of the catalyst, in either case, when compared with the content converted value as a mineral acid, the same almost. 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。 When the amount of the catalyst is calculated relative to the feed lactic acid content of the mineral acid, it is 0.001 to 3.0 wt%, preferably 0.005 to 2.5 wt%.

金属アルミニウムと乳酸の供給仕込量は、反応理論量、 Supply the charged amount of metallic aluminum and lactic acid, the reaction theoretical amount,
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。 That is, good in an amount of lactic acid 3 mol with respect to metallic aluminum to 1 mole, in terms of purity of the reaction rate and aluminum lactate, lactic acid (lactate 3.1-3.3 mol per metal aluminum 1 mol) small excess be used It 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。 To increase the yield per unit time, but the metal aluminum can also be used in excess from the reaction stoichiometric amount, if lactic acid content of aluminum lactate produced is low, supplies a lactic new Lata Te, it is necessary to further carry out the 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。 Not particularly limited concentration of lactic acid is to be used, from the viewpoint of the reaction rate and the operation, in either case preferably 10.0 to 60.0 wt%.

反応温度は還流温度、即ち100〜105℃が好ましい。 The reaction temperature is the reflux temperature, i.e. 100-105 ° C. are preferred.

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 production of aluminum lactate under the conditions as described above, can be prepared readily aluminum lactate than metallic aluminum lactate.

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、 Aluminum lactate produced, either in aqueous solution, or due to the presence in some precipitated state, after concentration if necessary,
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。 The precipitated aluminum lactate over-separated, Yotsute to dry, high purity aluminum lactate powder can be obtained. 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。 At this time, the catalyst used is removed in the mother liquor at superatmospheric separation process, it is reusable.

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。 For the manufacturing of aluminum lactate in the absence of a catalyst, a result of various studies, have been found to react with lactic acid Using a fine powder of metallic aluminum, since the reaction rate is slow as seen in the following comparative example, companies difficulty has been made to reduction.

以下、本発明を実施例あによつて具体的に説明するが、 The present invention will be described below examples Aniyotsute specifically,
本発明はこれら実施例に限定されるものではない。 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 The reactor equipped with a stirrer of Example 1 2, 20-40 mesh screen of metal aluminum 27.0g and 20 wt% aqueous lactic acid solution 1395.0g
及び触媒として硫酸0.14gを供給し、反応温度100〜105 And supplying a sulfuric acid 0.14g as a catalyst, reaction temperature 100 to 105
℃で撹拌しながら12時間反応を行なつた。 Rows 12 hours while stirring at ℃ Natsuta. 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。 In this case the yield was 100.0%, the residual aluminum metal has failed observed.

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。 The concentration of aluminum lactate was concentrated to 50 wt%, after cooling, the precipitated aluminum lactate over-separated and then subjected to drying to obtain a powder of aluminum lactate. その結果、 as a result,
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 Purity of the powder aluminum lactate to aluminum is 9
9.1%、また乳酸に対する純度は100.1%であつた。 9.1%, also the purity relative to that of lactic acid was found to be 100.1%.

但し、アルミニウムに対する純度は、式 However, purity to the aluminum of the formula に基いて算出される。 It is calculated on the basis of. 乳酸に対する純度の計算も同様である。 The purity of the calculation for lactic acid is the same.

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 The reactor equipped with a stirring device of the second embodiment 2, 20-40 mesh screen of metal aluminum 27.0g and 20 wt% aqueous lactic acid solution 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 And over the separation mother liquor 320g of aluminum lactate in Example No.1
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。 Supplies, where was the line summer under the same conditions as in Example 1, 100% yield with a reaction time 12 hours were obtained.

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。 The powder of aluminum lactate was obtained in the same manner as in Example 1, the analytical line Natsuta. 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。 As a result, purity of 99.4% of powdered aluminum lactate to aluminum, also the purity relative to that of lactic acid was found to be 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。 Yotsute to the method of Example 3-5 Example 1, by carrying out under the conditions shown in the table below to obtain the results shown in the table below.

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。 Yotsute to the method of Comparative Examples 1-2 Example 1, by carrying out under the conditions shown in the table below to obtain the results shown in the table below.

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】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。 [Claim 1] In producing the aluminum lactate than metallic aluminum lactate, a manufacturing method of aluminum lactate, which comprises using an aluminum salt of mineral acids and or mineral acids as catalysts.
JP18271384A 1984-09-03 1984-09-03 Process for the preparation of aluminum lactate Expired - Fee Related JPH0665656B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18271384A JPH0665656B2 (en) 1984-09-03 1984-09-03 Process for the preparation of aluminum lactate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18271384A JPH0665656B2 (en) 1984-09-03 1984-09-03 Process for the preparation of aluminum lactate

Publications (2)

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JPS6160631A true JPS6160631A (en) 1986-03-28
JPH0665656B2 true JPH0665656B2 (en) 1994-08-24

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JP5374793B2 (en) 2006-04-21 2013-12-25 エボニック デグサ ゲーエムベーハーEvonik Degussa GmbH Water-absorbing polymer structures transmittance and under pressure absorption rate is improved
US7459575B2 (en) 2006-12-14 2008-12-02 Purac Biochem B.V. Aluminum trilactate powder and method for preparation

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JPS585174B2 (en) * 1980-11-05 1983-01-29 Taki Chemical

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