DE1280838B - Verfahren zur Reinigung von Lactiden - Google Patents

Verfahren zur Reinigung von Lactiden

Info

Publication number
DE1280838B
DE1280838B DEP38443A DEP0038443A DE1280838B DE 1280838 B DE1280838 B DE 1280838B DE P38443 A DEP38443 A DE P38443A DE P0038443 A DEP0038443 A DE P0038443A DE 1280838 B DE1280838 B DE 1280838B
Authority
DE
Germany
Prior art keywords
lactide
lactides
recrystallization
benzene
purifying
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.)
Pending
Application number
DEP38443A
Other languages
German (de)
English (en)
Inventor
Charles Gerhard Fritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ethicon Inc
Original Assignee
Ethicon Inc
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 Ethicon Inc filed Critical Ethicon Inc
Publication of DE1280838B publication Critical patent/DE1280838B/de
Pending 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
DEP38443A 1964-12-28 1965-12-27 Verfahren zur Reinigung von Lactiden Pending DE1280838B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42170264A 1964-12-28 1964-12-28

Publications (1)

Publication Number Publication Date
DE1280838B true DE1280838B (de) 1968-10-24

Family

ID=23671671

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP38443A Pending DE1280838B (de) 1964-12-28 1965-12-27 Verfahren zur Reinigung von Lactiden

Country Status (6)

Country Link
BE (1) BE674355A (fr)
DE (1) DE1280838B (fr)
FR (1) FR1462616A (fr)
GB (1) GB1122229A (fr)
NL (1) NL6516979A (fr)
SE (1) SE322788B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0339882A1 (fr) * 1988-04-27 1989-11-02 MITSUI TOATSU CHEMICALS, Inc. Procédé de production de lactide
CN114011462A (zh) * 2021-11-18 2022-02-08 扬州大学 聚苯胺负载锌催化剂及其制备方法与应用

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5767222A (en) * 1988-08-08 1998-06-16 Chronopol, Inc. Degradable polydioxaneone-based materials
US5444113A (en) * 1988-08-08 1995-08-22 Ecopol, Llc End use applications of biodegradable polymers
US5319107A (en) * 1990-09-18 1994-06-07 Biopak Technology, Ltd. Method to produce cyclic esters
US5274127A (en) * 1990-09-18 1993-12-28 Biopak Technology, Ltd. Lactide production from dehydration of aqueous lactic acid feed
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
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
US5675021A (en) * 1992-03-19 1997-10-07 Chronopol, Inc. Method to produce and purify cyclic esters
CA2115472C (fr) * 1993-02-17 2002-08-13 William George O'brien Purification de lactides par cristallisation par fusion
JP2959375B2 (ja) * 1994-01-25 1999-10-06 株式会社島津製作所 ラクチドの精製法および重合法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0339882A1 (fr) * 1988-04-27 1989-11-02 MITSUI TOATSU CHEMICALS, Inc. Procédé de production de lactide
CN114011462A (zh) * 2021-11-18 2022-02-08 扬州大学 聚苯胺负载锌催化剂及其制备方法与应用
CN114011462B (zh) * 2021-11-18 2023-10-27 扬州大学 聚苯胺负载锌催化剂及其制备方法与应用

Also Published As

Publication number Publication date
GB1122229A (en) 1968-07-31
SE322788B (fr) 1970-04-20
BE674355A (fr) 1966-06-27
FR1462616A (fr) 1966-12-16
NL6516979A (fr) 1966-06-29

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