JP5624000B2 - ペンタメチレンジアミンの製造方法 - Google Patents
ペンタメチレンジアミンの製造方法 Download PDFInfo
- Publication number
- JP5624000B2 JP5624000B2 JP2011190734A JP2011190734A JP5624000B2 JP 5624000 B2 JP5624000 B2 JP 5624000B2 JP 2011190734 A JP2011190734 A JP 2011190734A JP 2011190734 A JP2011190734 A JP 2011190734A JP 5624000 B2 JP5624000 B2 JP 5624000B2
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- JP
- Japan
- Prior art keywords
- pentamethylenediamine
- monohydrochloride
- aqueous solution
- thermal decomposition
- monocarbonate
- 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.)
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Description
<ペンタメチレンジアミン一塩酸一炭酸塩の反応収率(単位mol%)>
以下の高速液体クロマトグラフ(HPLC)条件下で得られたクロマトグラムの面積値から作成した検量線により、ペンタメチレンジアミンの濃度を算出し、L−リシン・一塩酸塩およびペンタメチレンジアミンの合計濃度に対する、ペンタメチレンジアミンの濃度の割合をペンタメチレンジアミン一塩酸一炭酸塩の反応収率とした。
カラム温度:40℃
溶離液:0.2M リン酸ナトリウム(pH 7.7)+2.3mM 1−オクタンスルホン酸ナトリウム
流量:0.5mL/min
L−リシン・一塩酸塩およびペンタメチレンジアミンの検出には、オルトフタルアルデヒドを用いたポストカラム誘導化法[J.Chromatogr., 83, 353−355(1973)]を採用した。
<ペンタメチレンジアミンの濃度>
各試料中の全ペンタメチレンジアミン換算濃度、および、ペンタメチレンジアミン一塩酸塩の濃度は自動滴定装置(平沼産業社製、COM500)を使用し、滴定により測定した。
全ペンタメチレンジアミン換算濃度(質量%)
={y÷1000×0.2×f}×102.18÷a×100 (4)
ペンタメチレンジアミン一塩酸塩濃度(質量%)
={x÷1000×0.2×f}×138.64÷a×100 (5)
また、滴定測定の結果、当量点が1点である場合、この当量点はペンタメチレンジアミン一塩酸塩によるものであり、試料中にペンタメチレンジジアミン一塩酸一炭酸塩は含まれていないものとする。
(リシン脱炭酸酵素遺伝子(cadA)のクローニング)
Escherichia coli W3110株(ATCC27325)から常法に従い調製したゲノムDNAをPCRの鋳型に用いた。
(形質転換体の作製)
pCADAを用いてEscherichia coli W3110株を通常の方法で形質転換し、得られた形質転換体をW/pCADAと命名した。
300mLのフラスコに、L−リシン・一塩酸塩を終濃度が45質量%となるように、および、ピリドキサールリン酸を終濃度が0.15mmol/Lとなるように調整した基質溶液300gを加えた。次に上記のW/pCADA菌体破砕液(乾燥菌体換算重量0.0898g)を添加し、反応を開始した。反応条件は42℃、350rpmとした。24時間後のペンタメチレンジアミンの反応収率は98%に達していた。上記の反応24時間後の反応液を遠心分離(8000rpm、20分)で固形分を除去した後に、1gの活性炭(三倉化成社製、粉末活性炭PM−SX)を添加し、室温で1時間撹拌した後、ろ紙(ADVANTEC社、5C)にてろ過し、ペンタメチレンジアミン一塩酸一炭酸塩水溶液(ペンタメチレンジアミン換算濃度26.1質量%)を得た。
L−リシン・一塩酸塩を終濃度が30質量%となるように配合した以外は、調製例2と同様にして、ペンタメチレンジアミン一塩酸一炭酸塩水溶液(ペンタメチレンジアミン換算濃度16.3質量%)を得た。
L−リシン・一塩酸塩を終濃度が20質量%となるように配合した以外は、調製例2と同様にして、ペンタメチレンジアミン一塩酸一炭酸塩水溶液(ペンタメチレンジアミン換算濃度11.3質量%)を得た。
300mLフラスコに、ペンタメチレンジアミンの終濃度が26質量%となるように調整したペンタメチレンジアミン溶液300gを加えた。次に、炭酸ガスを通気(流量120mL/分)するとともに反応を開始した。反応条件は42℃、350rpmとした。反応時間は24時間とした。
ペンタメチレンジアミンの終濃度が45質量%となるように調整したペンタメチレンジアミン溶液を用いた以外は、調製例5と同様にして、ペンタメチレンジアミン二炭酸塩水溶液(ペンタメチレンジアミン換算濃度34.2質量%)を得た。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液120g(ペンタメチレンジアミン換算濃度26.1質量%)を、フラスコに入れ、還流しながら内温71℃(オイルバス温度73℃)、101.3kPa、すなわち、常圧(非沸騰状態)にてペンタメチレンジアミン一塩酸塩と二酸化炭素とに分解した。5時間後に得られたペンタメチレンジアミン一塩酸塩水溶液中の全ペンタメチレンジアミン換算濃度およびペンタメチレンジアミン一塩酸塩濃度はそれぞれ、27.1質量%、4.3質量%であった。この測定結果より、ペンタメチレンジアミン一塩酸塩およびペンタメチレンジアミン一塩酸一炭酸塩に対するペンタメチレンジアミン一塩酸塩の濃度、すなわち、熱分解率は、11.7mol%であった(熱分解工程)。結果を表1に示す。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液125g(ペンタメチレンジアミン換算濃度26.1質量%)を用いて、表1に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液125g(ペンタメチレンジアミン換算濃度26.1質量%)を用いて、表1に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液126g(ペンタメチレンジアミン換算濃度26.1質量%)を用いて、表1に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液126g(ペンタメチレンジアミン換算濃度24.9質量%)を用いて、表1に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例3の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液103g(ペンタメチレンジアミン換算濃度16.3質量%)を用いて、表2に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例4の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液100g(ペンタメチレンジアミン換算濃度11.3質量%)を用いて、表2に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例4の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液112g(ペンタメチレンジアミン換算濃度11.3質量%)を用いて、表2に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液100g(ペンタメチレンジアミン換算濃度26.1質量%)を用いて、表2に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液121g(ペンタメチレンジアミン換算濃度26.1質量%)を用いて、表2に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例2の方法により得られたペンタメチレンジアミン一塩酸一炭酸塩水溶液150g(ペンタメチレンジアミン換算濃度26.1質量%)を用いて、表2に示す熱分解条件とした以外は、参考例1と同様にして熱分解し、ペンタメチレンジアミン一塩酸塩を得た(熱分解工程)。
調製例5の方法により得られたペンタメチレンジアミン二炭酸塩水溶液120g(ペンタメチレンジアミン換算濃度21.4質量%)をフラスコに入れ、還流しながら内温71℃(オイルバス温度73℃)、常圧(非沸騰状態)にてペンタメチレンジアミンと二酸化炭素とに分解した。5時間後に得られたペンタメチレンジアミン水溶液中の全ペンタメチレンジアミン換算濃度およびペンタメチレンジアミン濃度はそれぞれ、23.0質量%、1.3質量%であった。この測定結果より、ペンタメチレンジアミンおよびペンタメチレンジアミン二炭酸塩に対するペンタメチレンジアミンの濃度、すなわち、熱分解率は、5.8mol%であった。
調製例5の方法により得られたペンタメチレンジアミン二炭酸塩水溶液124g(ペンタメチレンジアミン換算濃度21.4質量%)を用いて、表3に示す熱分解条件とした以外は、比較例1と同様にして熱分解し、ペンタメチレンジアミンを得た。
調製例6の方法により得られたペンタメチレンジアミン二炭酸塩水溶液116g(ペンタメチレンジアミン換算濃度34.2質量%)を用いて、表3に示す熱分解条件とした以外は、比較例1と同様にして熱分解し、ペンタメチレンジアミンを得た。
Claims (2)
- ペンタメチレンジアミンの一塩酸一炭酸塩を熱分解して、ペンタメチレンジアミンの一塩酸塩を得る熱分解工程、および、
前記熱分解工程において得られたペンタメチレンジアミンの一塩酸塩をアルカリ処理して、ペンタメチレンジアミンを得るアルカリ処理工程
を備え、
前記熱分解工程における加熱温度が、80〜120℃であり、
前記熱分解工程において、ペンタメチレンジアミン換算濃度が10質量%以上のペンタメチレンジアミンの一塩酸一炭酸塩の水溶液を、沸騰させる
ことを特徴とする、ペンタメチレンジアミンの製造方法。 - 前記熱分解工程において、ペンタメチレンジアミンの一塩酸一炭酸塩の水溶液を、常圧下、100℃を超過し110℃以下の温度で加熱することを特徴とする、請求項1に記載のペンタメチレンジアミンの製造方法。
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