TW341569B - Preparation process and purification process of dimeric cyclic ester of α-hydroxycarboxylic acid - Google Patents

Preparation process and purification process of dimeric cyclic ester of α-hydroxycarboxylic acid

Info

Publication number
TW341569B
TW341569B TW086100909A TW86100909A TW341569B TW 341569 B TW341569 B TW 341569B TW 086100909 A TW086100909 A TW 086100909A TW 86100909 A TW86100909 A TW 86100909A TW 341569 B TW341569 B TW 341569B
Authority
TW
Taiwan
Prior art keywords
oligomer
hydroxycarboxylic acid
cyclic ester
dimeric cyclic
depolymerization
Prior art date
Application number
TW086100909A
Other languages
English (en)
Chinese (zh)
Inventor
Yoshiya Shiiki
Shinmei Kawakami
Original Assignee
Kureha Chemical Ind Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kureha Chemical Ind Co Ltd filed Critical Kureha Chemical Ind Co Ltd
Application granted granted Critical
Publication of TW341569B publication Critical patent/TW341569B/zh

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/10—1,4-Dioxanes; Hydrogenated 1,4-dioxanes
    • C07D319/12—1,4-Dioxanes; Hydrogenated 1,4-dioxanes not condensed with other rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyesters Or Polycarbonates (AREA)
TW086100909A 1996-02-09 1997-01-28 Preparation process and purification process of dimeric cyclic ester of α-hydroxycarboxylic acid TW341569B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4800096 1996-02-09
JP11313996 1996-04-10

Publications (1)

Publication Number Publication Date
TW341569B true TW341569B (en) 1998-10-01

Family

ID=26388215

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086100909A TW341569B (en) 1996-02-09 1997-01-28 Preparation process and purification process of dimeric cyclic ester of α-hydroxycarboxylic acid

Country Status (5)

Country Link
US (1) US5830991A (index.php)
EP (1) EP0789023A2 (index.php)
JP (1) JP4871923B2 (index.php)
KR (1) KR100218850B1 (index.php)
TW (1) TW341569B (index.php)

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KR100451402B1 (ko) 1996-07-19 2004-10-06 구레하 가가쿠 고교 가부시키가이샤 가스 배리어성 복합필름
DE69727304T2 (de) 1996-09-13 2004-10-21 Kureha Chemical Ind Co Ltd Gasundurchlässiger mehrschichtiger hohler behälter
JP4565208B2 (ja) 2000-03-31 2010-10-20 株式会社クレハ グリコリドの精製方法
US6916939B2 (en) * 2000-08-11 2005-07-12 Kureha Kagaku Kogyo K.K. Process for the preparation of cyclic esters and method for purification of the same
ES2246385T3 (es) * 2001-03-06 2006-02-16 Kureha Kagaku Kogyo Kabushiki Kaisha Procedimiento para la produccion de glicolido y composicion de acido glicolico.
JP4394352B2 (ja) * 2001-04-12 2010-01-06 株式会社クレハ グリコリドの製造方法
JP2004043682A (ja) * 2002-07-12 2004-02-12 Nippon Shokubai Co Ltd ポリグリコール酸の製造方法
CA2511476A1 (en) * 2002-12-23 2004-07-22 Dow Global Technologies Inc. Method of smc molding
US20040231845A1 (en) 2003-05-15 2004-11-25 Cooke Claude E. Applications of degradable polymers in wells
US20090107684A1 (en) 2007-10-31 2009-04-30 Cooke Jr Claude E Applications of degradable polymers for delayed mechanical changes in wells
EP1717236A1 (en) * 2005-04-28 2006-11-02 Purac Biochem B.V. Method for purifying glycolide
JP5235311B2 (ja) * 2007-02-20 2013-07-10 株式会社クレハ 環状エステルの精製方法
KR101274369B1 (ko) 2008-06-20 2013-06-13 아사히 가세이 케미칼즈 가부시키가이샤 α-히드록시산의 제조 방법
EP2377858B1 (en) * 2008-12-26 2014-04-30 Kureha Corporation Method for producing glycolide
CA2784995C (en) 2009-12-21 2018-07-03 Evonik Degussa Corporation Process for preparing cyclic esters comprising unsaturated functional groups and polyesters prepared from same
CN102712617B (zh) 2010-01-19 2015-06-24 株式会社吴羽 乙交酯的制造方法
WO2012001003A1 (en) 2010-07-02 2012-01-05 Metabolic Explorer Method for the preparation of hydroxy acids
JP2012097224A (ja) * 2010-11-04 2012-05-24 Hitachi Plant Technologies Ltd ポリヒドロキシカルボン酸の製造装置および製造方法
JP6326373B2 (ja) 2012-11-22 2018-05-16 株式会社クレハ 気液の向流接触による精留工程を備えるグリコリドの製造方法、及び、粗グリコリドの精製方法
US9512100B2 (en) 2013-03-26 2016-12-06 Kureha Corporation Method for producing glycolide
US9643949B2 (en) 2013-03-27 2017-05-09 Kureha Corporation Method for producing glycolide
JP6144562B2 (ja) 2013-07-22 2017-06-07 株式会社クレハ 脂肪族ポリエステルの製造方法
CN107286126A (zh) * 2016-04-13 2017-10-24 中国石油化工股份有限公司 1,4-二氧杂环-2,5-己二酮的制备方法
CN107286127A (zh) * 2016-04-13 2017-10-24 中国石油化工股份有限公司 低酸含量1,4-二氧杂环-2,5-己二酮的制备方法
CN107868076A (zh) * 2016-09-26 2018-04-03 中国石油化工股份有限公司 低杂质含量乙交酯的制备
CN110072856B (zh) * 2017-01-24 2022-03-15 株式会社吴羽 α-羟基羧酸二聚物环状酯的制造方法
JP6785165B2 (ja) 2017-01-27 2020-11-18 株式会社クレハ 成形体の製造方法
JP6751221B2 (ja) * 2018-03-07 2020-09-02 株式会社クレハ 環状エステルの製造方法
WO2020087221A1 (en) * 2018-10-29 2020-05-07 Pujing Chemical Industry Co., Ltd Controlled production of polyglycolic acid and glycolide
CN113603671A (zh) * 2021-08-13 2021-11-05 山东谷雨春生物科技有限公司 一种提高交酯收率的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668162A (en) * 1952-03-20 1954-02-02 Du Pont Preparation of high molecular weight polyhydroxyacetic ester
US4727163A (en) * 1985-07-11 1988-02-23 E. I. Du Pont De Nemours And Company Process for preparing highly pure cyclic esters
US4835293A (en) * 1987-02-24 1989-05-30 E. I. Du Pont De Nemours And Company Atmospheric pressure process for preparing pure cyclic esters
US5326887A (en) * 1991-02-27 1994-07-05 E. I. Du Pont De Nemours And Company Process for the preparation of 1,4-dioxane-2,5-diones
TW211577B (index.php) * 1991-07-24 1993-08-21 Du Pont
US5420304A (en) * 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
FR2692263B1 (fr) * 1992-06-15 1994-09-23 Flamel Tech Sa Procédé de préparation d'esters cycliques d'acides-alpha-hydroxycarboxyliques.
US5342969A (en) * 1993-03-03 1994-08-30 E. I. Du Pont De Nemours And Company Recovery of hydroxycarboxylic acid values from poly(hydroxycarboxylic acids)

Also Published As

Publication number Publication date
EP0789023A3 (index.php) 1997-09-10
JP4871923B2 (ja) 2012-02-08
KR970061886A (ko) 1997-09-12
JP2008297307A (ja) 2008-12-11
US5830991A (en) 1998-11-03
KR100218850B1 (ko) 1999-09-01
EP0789023A2 (en) 1997-08-13

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MM4A Annulment or lapse of patent due to non-payment of fees