DE1668993B2 - Verfahren zur isolierung von alpha-glycolid - Google Patents

Verfahren zur isolierung von alpha-glycolid

Info

Publication number
DE1668993B2
DE1668993B2 DE19681668993 DE1668993A DE1668993B2 DE 1668993 B2 DE1668993 B2 DE 1668993B2 DE 19681668993 DE19681668993 DE 19681668993 DE 1668993 A DE1668993 A DE 1668993A DE 1668993 B2 DE1668993 B2 DE 1668993B2
Authority
DE
Germany
Prior art keywords
glycolide
isolating alpha
isolating
alpha
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.)
Granted
Application number
DE19681668993
Other languages
English (en)
Other versions
DE1668993C3 (de
DE1668993A1 (de
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 filed Critical
Publication of DE1668993A1 publication Critical patent/DE1668993A1/de
Publication of DE1668993B2 publication Critical patent/DE1668993B2/de
Application granted granted Critical
Publication of DE1668993C3 publication Critical patent/DE1668993C3/de
Expired legal-status Critical Current

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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
    • C08G63/08—Lactones or lactides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Saccharide Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicinal Preparation (AREA)
DE1668993A 1967-06-12 1968-03-05 Verfahren zur Isolierung von alpha-Glycolid Expired DE1668993C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64550267A 1967-06-12 1967-06-12

Publications (3)

Publication Number Publication Date
DE1668993A1 DE1668993A1 (de) 1972-03-23
DE1668993B2 true DE1668993B2 (de) 1973-07-12
DE1668993C3 DE1668993C3 (de) 1974-02-07

Family

ID=24589277

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1668993A Expired DE1668993C3 (de) 1967-06-12 1968-03-05 Verfahren zur Isolierung von alpha-Glycolid

Country Status (8)

Country Link
US (1) US3457280A (de)
BE (1) BE714117A (de)
CH (1) CH543501A (de)
DE (1) DE1668993C3 (de)
ES (1) ES354952A1 (de)
FR (1) FR1560162A (de)
NL (1) NL159382B (de)
SE (2) SE356047B (de)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912692A (en) * 1973-05-03 1975-10-14 American Cyanamid Co Process for polymerizing a substantially pure glycolide composition
US4716964A (en) * 1981-08-10 1988-01-05 Exxon Production Research Company Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion
US4727163A (en) * 1985-07-11 1988-02-23 E. I. Du Pont De Nemours And Company Process for preparing highly pure cyclic esters
US4650851A (en) * 1986-03-19 1987-03-17 Pfizer Hospital Products Group, Inc. Purification of glycolide
DE3781133T2 (de) * 1986-12-19 1993-06-24 Akzo Nv Herstellung von polymilchsaeure und copolymeren daraus.
US4835293A (en) * 1987-02-24 1989-05-30 E. I. Du Pont De Nemours And Company Atmospheric pressure process for preparing pure cyclic esters
US5274127A (en) * 1990-09-18 1993-12-28 Biopak Technology, Ltd. Lactide production from dehydration of aqueous lactic acid feed
US5319107A (en) * 1990-09-18 1994-06-07 Biopak Technology, Ltd. Method to produce cyclic esters
US5223630A (en) * 1989-10-10 1993-06-29 E. I. Du Pont De Nemours And Company Glycolide purification process
US5043458A (en) * 1990-05-03 1991-08-27 E. I. Du Pont De Nemours And Company One-step continuous process for preparing cyclic esters
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
US5675021A (en) * 1992-03-19 1997-10-07 Chronopol, Inc. Method to produce and purify cyclic esters
US5686630A (en) * 1993-09-29 1997-11-11 Chronopol, Inc. Purifying cyclic esters by aqueous solvent extraction
US5420304A (en) * 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
US6074673A (en) * 1996-04-22 2000-06-13 Guillen; Manuel Slow-release, self-absorbing, drug delivery system
WO2007011708A2 (en) 2005-07-15 2007-01-25 Micell Technologies, Inc. Stent with polymer coating containing amorphous rapamycin
WO2007011707A2 (en) 2005-07-15 2007-01-25 Micell Technologies, Inc. Polymer coatings containing drug powder of controlled morphology
PL2019657T3 (pl) 2006-04-26 2015-10-30 Micell Technologies Inc Powłoki zawierające wiele leków
US9539593B2 (en) 2006-10-23 2017-01-10 Micell Technologies, Inc. Holder for electrically charging a substrate during coating
US11426494B2 (en) 2007-01-08 2022-08-30 MT Acquisition Holdings LLC Stents having biodegradable layers
CA2679712C (en) 2007-01-08 2016-11-15 Micell Technologies, Inc. Stents having biodegradable layers
JP2010527746A (ja) 2007-05-25 2010-08-19 ミセル テクノロジーズ、インコーポレイテッド メディカルデバイスコーティング用ポリマーフィルム
CN102083397B (zh) 2008-04-17 2013-12-25 米歇尔技术公司 具有生物可吸收层的支架
US9486431B2 (en) 2008-07-17 2016-11-08 Micell Technologies, Inc. Drug delivery medical device
US8834913B2 (en) 2008-12-26 2014-09-16 Battelle Memorial Institute Medical implants and methods of making medical implants
US9981072B2 (en) 2009-04-01 2018-05-29 Micell Technologies, Inc. Coated stents
WO2010121187A2 (en) 2009-04-17 2010-10-21 Micell Techologies, Inc. Stents having controlled elution
EP2453834A4 (de) 2009-07-16 2014-04-16 Micell Technologies Inc Medizinische wirkstofffreisetzungsvorrichtung
EP2531140B1 (de) 2010-02-02 2017-11-01 Micell Technologies, Inc. Stent und stenteinsatzsystem mit verbesserter einsetzbarkeit
US8795762B2 (en) 2010-03-26 2014-08-05 Battelle Memorial Institute System and method for enhanced electrostatic deposition and surface coatings
US10232092B2 (en) 2010-04-22 2019-03-19 Micell Technologies, Inc. Stents and other devices having extracellular matrix coating
CA2805631C (en) 2010-07-16 2018-07-31 Micell Technologies, Inc. Drug delivery medical device
US10464100B2 (en) 2011-05-31 2019-11-05 Micell Technologies, Inc. System and process for formation of a time-released, drug-eluting transferable coating
US10117972B2 (en) 2011-07-15 2018-11-06 Micell Technologies, Inc. Drug delivery medical device
US10188772B2 (en) 2011-10-18 2019-01-29 Micell Technologies, Inc. Drug delivery medical device
EP2967803B1 (de) 2013-03-12 2023-12-27 Micell Technologies, Inc. Bioabsorbierbare biomedizinische implantate
WO2014186532A1 (en) 2013-05-15 2014-11-20 Micell Technologies, Inc. Bioabsorbable biomedical implants
CN110684011B (zh) * 2018-07-06 2021-02-09 中国石油化工股份有限公司 乙交酯的制备方法

Family Cites Families (1)

* 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

Also Published As

Publication number Publication date
US3457280A (en) 1969-07-22
CH543501A (de) 1973-12-14
SE378597B (de) 1975-09-08
ES354952A1 (es) 1970-03-01
FR1560162A (de) 1969-03-14
DE1668993C3 (de) 1974-02-07
BE714117A (de) 1968-10-24
SE356047B (de) 1973-05-14
NL6806492A (de) 1968-12-13
DE1668993A1 (de) 1972-03-23
NL159382B (nl) 1979-02-15

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee