DE1280838B - Verfahren zur Reinigung von Lactiden - Google Patents
Verfahren zur Reinigung von LactidenInfo
- 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
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)
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)
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)
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 |
-
1965
- 1965-12-27 DE DEP38443A patent/DE1280838B/de active Pending
- 1965-12-27 SE SE1678365A patent/SE322788B/xx unknown
- 1965-12-27 NL NL6516979A patent/NL6516979A/xx unknown
- 1965-12-27 BE BE674355D patent/BE674355A/xx unknown
- 1965-12-28 FR FR44021A patent/FR1462616A/fr not_active Expired
- 1965-12-28 GB GB5495065A patent/GB1122229A/en not_active Expired
Cited By (3)
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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