PL412768A1 - Sposób otrzymywania L,L- i D,D-laktydu kwasu mlekowego - Google Patents
Sposób otrzymywania L,L- i D,D-laktydu kwasu mlekowegoInfo
- Publication number
- PL412768A1 PL412768A1 PL412768A PL41276815A PL412768A1 PL 412768 A1 PL412768 A1 PL 412768A1 PL 412768 A PL412768 A PL 412768A PL 41276815 A PL41276815 A PL 41276815A PL 412768 A1 PL412768 A1 PL 412768A1
- Authority
- PL
- Poland
- Prior art keywords
- lactic acid
- lactide
- stage
- tin octoate
- obtaining
- Prior art date
Links
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 4
- 235000014655 lactic acid Nutrition 0.000 title abstract 2
- 239000004310 lactic acid Substances 0.000 title abstract 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 abstract 2
- 229930182843 D-Lactic acid Natural products 0.000 abstract 1
- JVTAAEKCZFNVCJ-UWTATZPHSA-N D-lactic acid Chemical compound C[C@@H](O)C(O)=O JVTAAEKCZFNVCJ-UWTATZPHSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 229940022769 d- lactic acid Drugs 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- LPEKGGXMPWTOCB-GSVOUGTGSA-N methyl (R)-lactate Chemical compound COC(=O)[C@@H](C)O LPEKGGXMPWTOCB-GSVOUGTGSA-N 0.000 abstract 1
- 238000005292 vacuum distillation Methods 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
Landscapes
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Polyesters Or Polycarbonates (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Sposób otrzymywania L,L- i D,D-laktydu kwasu mlekowego w procesie dwuetapowym polega na tym, że w pierwszym etapie otrzymuje się niskocząsteczkowy oligomer kwasu L- lub D-mlekowego w drodze ogrzewania estru metylowego kwasu L- lub D-mlekowego pod ciśnieniem atmosferycznym w obecności oktanianu cyny jako katalizatora, po czym oddziela nieprzereagowany ester i resztki metanolu w drodze destylacji próżniowej, natomiast w drugim etapie procesu prowadzi się ogrzewanie otrzymanego oligomeru w obecności oktanianu cyny lub tlenku cynku użytych pod zmniejszonym ciśnieniem i po oddestylowaniu powstałego L,L- lub D,D-laktydu poddaje się go krystalizacji.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL412768A PL228845B1 (pl) | 2015-06-18 | 2015-06-18 | Sposób otrzymywania L,L-i D,D-laktydu kwasu mlekowego |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL412768A PL228845B1 (pl) | 2015-06-18 | 2015-06-18 | Sposób otrzymywania L,L-i D,D-laktydu kwasu mlekowego |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL412768A1 true PL412768A1 (pl) | 2016-12-19 |
| PL228845B1 PL228845B1 (pl) | 2018-05-30 |
Family
ID=57542578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL412768A PL228845B1 (pl) | 2015-06-18 | 2015-06-18 | Sposób otrzymywania L,L-i D,D-laktydu kwasu mlekowego |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL228845B1 (pl) |
-
2015
- 2015-06-18 PL PL412768A patent/PL228845B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL228845B1 (pl) | 2018-05-30 |
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