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Title:
Cyclic polymerization L-lactic acid.
Document Type and Number:
Japanese Patent JP6331182
Kind Code:
B1
Abstract:
【課題】 重合体単独としてｐＨが６〜７である環状重合Ｌ−乳酸の提供。【解決手段】 環状重合Ｌ−乳酸の製造方法では温度１９３℃を保ちながら減圧と窒素ガス噴射を停止、酸素を取り入れ・圧力７６０ｍｍＨｇに切り替え蒸気を発生させ数時間加熱処理後取り出し冷却し６０℃で個体化、この工程で酸味がない物質を得た、また物質のｐＨを測定した結果ｐＨ６．２の中性を示した。【選択図】図４

Inventors:
Nakamura etc.
Susumu Sugiki
Application Number:
JP2017216782A
Publication Date:
May 30, 2018
Filing Date:
October 24, 2017
Export Citation:
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Assignee:
Scrum Co., Ltd.
International Classes:
C08G63/08; A61K31/765; A61P35/00
Domestic Patent References:
JP2006232909A2006-09-07
JP2013039117A2013-02-28
JP5966230B12016-08-10
JP2007112751A2007-05-10
JP5966230B12016-08-10
JP2013039117A2013-02-28
JP2006232909A2006-09-07
JP2007112751A2007-05-10
JP2004307561A2004-11-04
JP2004155670A2004-06-03
JP2001139476A2001-05-22
JP2000239171A2000-09-05
JP2017039863A2017-02-23
JP2004307561A2004-11-04
JP2004155670A2004-06-03
JP2001139476A2001-05-22
JP2000239171A2000-09-05
Foreign References:
WO2002055090A12002-07-18
WO2000018757A12000-04-06
WO2002055090A12002-07-18
WO2000018757A12000-04-06



 
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