JP5966230B1 - Production method of cyclic polymerization L-lactic acid. - Google Patents
Production method of cyclic polymerization L-lactic acid. Download PDFInfo
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- JP5966230B1 JP5966230B1 JP2015139187A JP2015139187A JP5966230B1 JP 5966230 B1 JP5966230 B1 JP 5966230B1 JP 2015139187 A JP2015139187 A JP 2015139187A JP 2015139187 A JP2015139187 A JP 2015139187A JP 5966230 B1 JP5966230 B1 JP 5966230B1
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Abstract
【課題】本発明は、L−乳酸pH=1の強酸を縮合重合により環状重合L−乳酸pH=7の分子構造に生成させる。【解決手段】L−乳酸液体を容器に投入し加熱と減圧と圧力の条件下において窒素ガスを注入しL−乳酸の分子内脱水反応を行い発生した化合物、水素、酸素、炭素、窒素、を排出させる事により環状重合L−乳酸液を生じる。【選択図】図1The present invention generates a strong acid having L-lactic acid pH = 1 into a molecular structure having cyclic polymerization L-lactic acid pH = 7 by condensation polymerization. An L-lactic acid liquid is charged into a container, and nitrogen gas is injected under conditions of heating, decompression, and pressure, and an intramolecular dehydration reaction of L-lactic acid is performed. Hydrogen, oxygen, carbon, and nitrogen are generated. By discharging, a cyclic polymerization L-lactic acid solution is produced. [Selection] Figure 1
Description
本発明は、L−乳酸を環状重合L−乳酸に生成させる。 In the present invention, L-lactic acid is produced into cyclic polymerized L-lactic acid.
通常のL−乳酸は強酸pH1であり脱水重合を行なう事で分子構造の変化により環状重合L−乳酸pH7に生成させる。 Ordinary L-lactic acid has a strong acid pH of 1 and is formed into cyclic polymerized L-lactic acid pH 7 by dehydrating polymerization to change the molecular structure.
L−乳酸液を環状重合L−乳酸に生成する。 An L-lactic acid solution is produced into cyclic polymerized L-lactic acid.
L−乳酸液を加熱、(減圧と圧力)を交互に使い脱水縮合を繰返し発生した化合物を窒素ガスで排出させ、縮合で得られた低分子の環状重合L−乳酸である。 A low molecular weight cyclic polymerized L-lactic acid obtained by condensation by heating an L-lactic acid solution and exhausting a compound in which dehydration and condensation are repeatedly generated by alternately using (depressurization and pressure) with nitrogen gas.
1 球形容器本体
2 マントルヒーター
3 L−乳酸挿入口
4 温度計挿入口
5 窒素ガス直噴ノズル挿入口
6 環状重合L−乳酸取出口
7 排気口
8 排気口
9 蒸留水貯留部
10 蒸留水取出口
11 蒸留塔
12 冷却水入口
13 冷却水出口
14 吸出口DESCRIPTION OF SYMBOLS 1 Spherical container body 2 Mantle heater 3 L-lactic acid insertion port 4
Claims (2)
(1)第1工程:球形容器本体にL‐乳酸液を加熱させ、温度80℃から130℃まで上昇させ気圧760mmHgから気圧−675mmHgまで減圧し、窒素ガスを球形容器内L‐乳酸液中に注入撹拌しながら気圧を調整し、L‐乳酸に含まれている副生化合物を除去しながら加熱と減圧及び窒素ガスで排出させる。
(2)第2工程:球形容器内L‐乳酸液を加熱させ温度130℃から160℃の間で窒素ガスの注入量を調整し、気圧を上下させ気圧−675mmHgから気圧−225mmHgに上げて重合反応させ球形容器内L‐乳酸の脱水縮合を行ない、発生する副生化合物を窒素ガスで排出させ、球形容器内L‐乳酸液を加熱させ温度130℃から160℃まで上昇させながら気圧を上下数回繰り返しL‐乳酸の重合反応を行う。
(3)第3工程:球形容器内L‐乳酸液を加熱しながら温度160℃から190℃の間で窒素ガスの注入量を調整し気圧‐975mmHgピーク時まで減圧し、窒素ガスを球形容器内L‐乳酸液中に注入しながら加熱と減圧でL‐乳酸の脱水縮合を行ない、発生する化合物を窒素ガスで排出させながら温度190℃ピーク時を保ち窒素ガスの注入量を調整し気圧−225mmHgに上げ重合反応を行い環状重合体の構造を安定、生成させる。(1) The manufacturing method of cyclic polymerization L-lactic acid by the process of (3).
(1) First step: The L-lactic acid solution is heated in the spherical container body, the temperature is increased from 80 ° C. to 130 ° C., the pressure is reduced from 760 mmHg to -675 mmHg, and nitrogen gas is introduced into the L-lactic acid solution in the spherical container. The pressure is adjusted while stirring with injection, and the mixture is discharged with heating, reduced pressure and nitrogen gas while removing by-product compounds contained in L-lactic acid.
(2) Second step: The L-lactic acid solution in the spherical container is heated to adjust the injection amount of nitrogen gas between 130 ° C. and 160 ° C., and the pressure is raised and lowered to raise the pressure from −675 mmHg to atmospheric pressure −225 mmHg. The reaction is carried out to dehydrate and condense L-lactic acid in the spherical container, the generated by-product compound is discharged with nitrogen gas, and the L-lactic acid solution in the spherical container is heated to raise the temperature from 130 ° C. to 160 ° C. The polymerization reaction of L-lactic acid is repeated repeatedly.
(3) Third step: While heating the L-lactic acid solution in the spherical container, the injection amount of nitrogen gas is adjusted between 160 ° C. and 190 ° C., and the pressure is reduced to the atmospheric pressure-975 mmHg peak, and nitrogen gas is stored in the spherical container. While dehydrating and condensing L-lactic acid by heating and decompression while injecting into L-lactic acid solution, adjusting the injection amount of nitrogen gas while keeping the temperature at 190 ° C peak while discharging the generated compound with nitrogen gas, and adjusting the injection pressure of nitrogen gas The structure of the cyclic polymer is stabilized and formed by conducting a polymerization reaction.
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JP6331182B1 (en) * | 2017-10-24 | 2018-05-30 | 有限会社スクラム | Cyclic polymerization L-lactic acid. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004155670A (en) * | 2002-11-01 | 2004-06-03 | Youichirou Naganushi | Cell activator, method for producing cell activator and apparatus therefor |
JP2004307562A (en) * | 2003-04-02 | 2004-11-04 | Tendou Seiyaku Kk | Mixture of cyclic lactic acid oligomer |
JP2007112751A (en) * | 2005-10-20 | 2007-05-10 | Tokiwa:Kk | Method for producing cyclopolymerized lactic acid and cyclopolymerized lactic acid, medicine and healthy food and comseic comprising the same cyclic polymerized lactic acid |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004155670A (en) * | 2002-11-01 | 2004-06-03 | Youichirou Naganushi | Cell activator, method for producing cell activator and apparatus therefor |
JP2004307562A (en) * | 2003-04-02 | 2004-11-04 | Tendou Seiyaku Kk | Mixture of cyclic lactic acid oligomer |
JP2007112751A (en) * | 2005-10-20 | 2007-05-10 | Tokiwa:Kk | Method for producing cyclopolymerized lactic acid and cyclopolymerized lactic acid, medicine and healthy food and comseic comprising the same cyclic polymerized lactic acid |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6331182B1 (en) * | 2017-10-24 | 2018-05-30 | 有限会社スクラム | Cyclic polymerization L-lactic acid. |
WO2019082516A1 (en) * | 2017-10-24 | 2019-05-02 | 有限会社スクラム | Cyclopolymerized l-lactic acid |
US10954336B2 (en) | 2017-10-24 | 2021-03-23 | Scrum Co., Ltd. | Cyclic poly L-lactic acid |
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