MX9207631A - Proceso para la polimerizacion de lactida. - Google Patents
Proceso para la polimerizacion de lactida.Info
- Publication number
- MX9207631A MX9207631A MX9207631A MX9207631A MX9207631A MX 9207631 A MX9207631 A MX 9207631A MX 9207631 A MX9207631 A MX 9207631A MX 9207631 A MX9207631 A MX 9207631A MX 9207631 A MX9207631 A MX 9207631A
- Authority
- MX
- Mexico
- Prior art keywords
- preferred
- polymerization
- lanthanum
- ligands
- especially preferred
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000006116 polymerization reaction Methods 0.000 title abstract 2
- 229910052746 lanthanum Inorganic materials 0.000 abstract 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 abstract 2
- 239000003446 ligand Substances 0.000 abstract 2
- 229910052684 Cerium Inorganic materials 0.000 abstract 1
- OFOBLEOULBTSOW-UHFFFAOYSA-L Malonate Chemical compound [O-]C(=O)CC([O-])=O OFOBLEOULBTSOW-UHFFFAOYSA-L 0.000 abstract 1
- 229910052779 Neodymium Inorganic materials 0.000 abstract 1
- 229910052777 Praseodymium Inorganic materials 0.000 abstract 1
- 150000001450 anions Chemical class 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical group [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 abstract 1
- 125000000468 ketone group Chemical group 0.000 abstract 1
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 abstract 1
- 150000002596 lactones Chemical class 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 abstract 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 229910052706 scandium Inorganic materials 0.000 abstract 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical group [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 0.000 abstract 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Polyesters Or Polycarbonates (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/814,135 US5208297A (en) | 1991-12-30 | 1991-12-30 | Rare earth metal coordination compounds as lactone polymerization catalysts |
| US07/995,457 US5292859A (en) | 1992-12-22 | 1992-12-22 | Rare earth metal coordination compounds as lactone polymerization catalysts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX9207631A true MX9207631A (es) | 1994-05-31 |
Family
ID=27123817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX9207631A MX9207631A (es) | 1991-12-30 | 1992-12-30 | Proceso para la polimerizacion de lactida. |
Country Status (2)
| Country | Link |
|---|---|
| MX (1) | MX9207631A (enrdf_load_html_response) |
| TW (1) | TW221697B (enrdf_load_html_response) |
-
1992
- 1992-12-30 MX MX9207631A patent/MX9207631A/es unknown
- 1992-12-30 TW TW81110495A patent/TW221697B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| TW221697B (enrdf_load_html_response) | 1994-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW223018B (en) | Salts of peptides with carboxy-terminated polyesters | |
| ES446441A1 (es) | Procedimiento para preparar componentes de catalizadores u- tiles para polimerizar olefinas. | |
| EP0804633A4 (en) | METHOD AND SOLUTION TO GUARANTEE A CONVERSION COATING ON A METAL SURFACE | |
| EP1512709A3 (en) | Copolymers of biodegradable aliphatic polyesters | |
| AU605586B2 (en) | Abrasive grits formed of ceramic containing oxides of aluminum and rare earth metal, method of making and products made therewith | |
| EP0924214A3 (en) | The use of lewis acids for the breakdown of gelatinous rare earth compounds in hydrocarbon solutions | |
| EP0957093A3 (en) | Retrovial protease inhibitors | |
| MY124719A (en) | Supported catalyst comprising expanded anions | |
| CA2107906A1 (en) | Zinc oxide varistor and process for the production thereof | |
| DE69933879D1 (de) | Phosphoreszierende marine produkte | |
| MX9207631A (es) | Proceso para la polimerizacion de lactida. | |
| GB1521137A (en) | Ceramic dielectric composition | |
| CA2152072A1 (en) | Refrigeration working fluid compositions containing trifluoroethane | |
| EP0384727A3 (en) | Alpha-olefin polymerisation catalysts comprising perovskite type complex compounds and composite material produced using the same | |
| JPS6422350A (en) | Alkoxylating catalyst | |
| DE69312605D1 (de) | Neutronenaktivierbare Kationen enthaltende lipophile Zusammensetzungen | |
| IE34079L (en) | Catalytic epoxidation of olefins. | |
| JPS555938A (en) | Water-soluble polyester adhesive | |
| FR2669027B1 (fr) | Procede de fabrication d'oxalates doubles de terres rares et d'ammonium et leurs utilisations pour la fabrication d'oxydes de terres rares et oxydes de terres rares obtenus. | |
| JPH0616851B2 (ja) | 酸素欠陥型ペロブスカイト触媒 | |
| Chen et al. | First prototype of neutral diacyl complexes of platinum (II) and related acyl (alkyl) complexes of platinum (II) | |
| GB1527850A (en) | Process for the production of high molecular weight polyester | |
| NO891481D0 (no) | Anvendelse av jordalkalisalter av polykarboksylsyremonoestere som alkoksyleringskatalysatorer. | |
| GB1134815A (en) | Method of making phosphor raw-mix materials and phosphors | |
| KUWABARA | PTCR effect in porous barium titanate ceramics |