GB1122229A - Purification of lactides - Google Patents
Purification of lactidesInfo
- Publication number
- GB1122229A GB1122229A GB5495065A GB5495065A GB1122229A GB 1122229 A GB1122229 A GB 1122229A GB 5495065 A GB5495065 A GB 5495065A GB 5495065 A GB5495065 A GB 5495065A GB 1122229 A GB1122229 A GB 1122229A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lactide
- lactides
- benzene
- heating
- purified
- 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.)
- Expired
Links
- 238000000746 purification Methods 0.000 title 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 6
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- HQWPLXHWEZZGKY-UHFFFAOYSA-N diethylzinc Chemical compound CC[Zn]CC HQWPLXHWEZZGKY-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229920000747 poly(lactic acid) Polymers 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
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 |
|---|---|
| GB1122229A true GB1122229A (en) | 1968-07-31 |
Family
ID=23671671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5495065A Expired GB1122229A (en) | 1964-12-28 | 1965-12-28 | Purification of lactides |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE674355A (enrdf_load_stackoverflow) |
| DE (1) | DE1280838B (enrdf_load_stackoverflow) |
| FR (1) | FR1462616A (enrdf_load_stackoverflow) |
| GB (1) | GB1122229A (enrdf_load_stackoverflow) |
| NL (1) | NL6516979A (enrdf_load_stackoverflow) |
| SE (1) | SE322788B (enrdf_load_stackoverflow) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966982A (en) * | 1988-04-27 | 1990-10-30 | Mitsui Toatsu Chemicals, Incorporated | Process for the production of lactide |
| WO1992005167A1 (en) * | 1990-09-18 | 1992-04-02 | 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 |
| US5332839A (en) * | 1990-09-18 | 1994-07-26 | Biopak Technology, Ltd. | Catalytic production of lactide directly from lactic acid |
| US5420304A (en) * | 1992-03-19 | 1995-05-30 | Biopak Technology, Ltd. | Method to produce cyclic esters |
| JPH07206851A (ja) * | 1994-01-25 | 1995-08-08 | Shimadzu Corp | ラクチドの精製法および重合法 |
| US5444113A (en) * | 1988-08-08 | 1995-08-22 | Ecopol, Llc | End use applications of biodegradable polymers |
| US5556895A (en) * | 1988-08-08 | 1996-09-17 | Ecopol Llc | Degradable polydioxaneone-based materials |
| 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 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2115472C (en) * | 1993-02-17 | 2002-08-13 | William George O'brien | Melt crystallization purification of lactides |
| 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 |
-
1965
- 1965-12-27 NL NL6516979A patent/NL6516979A/xx unknown
- 1965-12-27 BE BE674355D patent/BE674355A/xx unknown
- 1965-12-27 SE SE1678365A patent/SE322788B/xx unknown
- 1965-12-27 DE DEP38443A patent/DE1280838B/de active Pending
- 1965-12-28 GB GB5495065A patent/GB1122229A/en not_active Expired
- 1965-12-28 FR FR44021A patent/FR1462616A/fr not_active Expired
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966982A (en) * | 1988-04-27 | 1990-10-30 | Mitsui Toatsu Chemicals, Incorporated | Process for the production of lactide |
| US5760118A (en) * | 1988-08-08 | 1998-06-02 | Chronopol, Inc. | End use applications of biodegradable polymers |
| US5556895A (en) * | 1988-08-08 | 1996-09-17 | Ecopol Llc | Degradable polydioxaneone-based materials |
| US5801223A (en) * | 1988-08-08 | 1998-09-01 | Lipinsky; Edward S. | Degradable polydioxaneone-based materials |
| 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 |
| US5332839A (en) * | 1990-09-18 | 1994-07-26 | Biopak Technology, Ltd. | Catalytic production of lactide directly from lactic acid |
| US5274127A (en) * | 1990-09-18 | 1993-12-28 | Biopak Technology, Ltd. | Lactide production from dehydration of aqueous lactic acid feed |
| WO1992005167A1 (en) * | 1990-09-18 | 1992-04-02 | Biopak Technology Ltd | Lactide production from dehydration of aqueous lactic acid feed |
| US5750732A (en) * | 1992-03-19 | 1998-05-12 | Chronopol, Inc. | Method to produce cyclic esters |
| US5675021A (en) * | 1992-03-19 | 1997-10-07 | Chronopol, Inc. | Method to produce and purify cyclic esters |
| US5420304A (en) * | 1992-03-19 | 1995-05-30 | Biopak Technology, Ltd. | Method to produce cyclic esters |
| US5856523A (en) * | 1992-03-19 | 1999-01-05 | Chronopol, Inc. | Purifying cyclic esters by aqueous solvent extraction and further purification |
| US5686630A (en) * | 1993-09-29 | 1997-11-11 | Chronopol, Inc. | Purifying cyclic esters by aqueous solvent extraction |
| JPH07206851A (ja) * | 1994-01-25 | 1995-08-08 | Shimadzu Corp | ラクチドの精製法および重合法 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1280838B (de) | 1968-10-24 |
| FR1462616A (fr) | 1966-12-16 |
| BE674355A (enrdf_load_stackoverflow) | 1966-06-27 |
| SE322788B (enrdf_load_stackoverflow) | 1970-04-20 |
| NL6516979A (enrdf_load_stackoverflow) | 1966-06-29 |
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