DK167195B1 - Fremgangsmaade til fremstilling af polyestere - Google Patents
Fremgangsmaade til fremstilling af polyestere Download PDFInfo
- Publication number
- DK167195B1 DK167195B1 DK179987A DK179987A DK167195B1 DK 167195 B1 DK167195 B1 DK 167195B1 DK 179987 A DK179987 A DK 179987A DK 179987 A DK179987 A DK 179987A DK 167195 B1 DK167195 B1 DK 167195B1
- Authority
- DK
- Denmark
- Prior art keywords
- polyester
- molecular weight
- product
- solution
- polydispersity
- Prior art date
Links
- 229920000728 polyester Polymers 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 15
- 230000007062 hydrolysis Effects 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 34
- 238000009826 distribution Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011260 aqueous acid Substances 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000007858 starting material Substances 0.000 claims description 7
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 238000001542 size-exclusion chromatography Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000008267 milk Substances 0.000 claims description 4
- 210000004080 milk Anatomy 0.000 claims description 4
- 235000013336 milk Nutrition 0.000 claims description 4
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 3
- 239000004626 polylactic acid Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 229920001606 poly(lactic acid-co-glycolic acid) Polymers 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 31
- 229920000642 polymer Polymers 0.000 description 17
- 229960000583 acetic acid Drugs 0.000 description 14
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 14
- 239000012362 glacial acetic acid Substances 0.000 description 11
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 8
- 229920001244 Poly(D,L-lactide) Polymers 0.000 description 8
- 229960000448 lactic acid Drugs 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- RKDVKSZUMVYZHH-UHFFFAOYSA-N 1,4-dioxane-2,5-dione Chemical compound O=C1COC(=O)CO1 RKDVKSZUMVYZHH-UHFFFAOYSA-N 0.000 description 6
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 239000007863 gel particle Substances 0.000 description 5
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- JJTUDXZGHPGLLC-IMJSIDKUSA-N 4511-42-6 Chemical compound C[C@@H]1OC(=O)[C@H](C)OC1=O JJTUDXZGHPGLLC-IMJSIDKUSA-N 0.000 description 4
- 239000004310 lactic acid Substances 0.000 description 4
- 235000014655 lactic acid Nutrition 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 150000001261 hydroxy acids Chemical class 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- WHBMMWSBFZVSSR-UHFFFAOYSA-N 3-hydroxybutyric acid Chemical compound CC(O)CC(O)=O WHBMMWSBFZVSSR-UHFFFAOYSA-N 0.000 description 2
- 229920001634 Copolyester Polymers 0.000 description 2
- 229920000229 biodegradable polyester Polymers 0.000 description 2
- 239000004622 biodegradable polyester Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000012264 purified product Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000012974 tin catalyst Substances 0.000 description 2
- 238000004260 weight control Methods 0.000 description 2
- ZNEMGFATAVGQSF-UHFFFAOYSA-N 1-(2-amino-6,7-dihydro-4H-[1,3]thiazolo[4,5-c]pyridin-5-yl)-2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]ethanone Chemical compound NC=1SC2=C(CN(CC2)C(CC=2OC(=NN=2)C=2C=NC(=NC=2)NC2CC3=CC=CC=C3C2)=O)N=1 ZNEMGFATAVGQSF-UHFFFAOYSA-N 0.000 description 1
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003405 delayed action preparation Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000006471 dimerization reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003937 drug carrier Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 150000002605 large molecules Chemical class 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/912—Polymers modified by chemical after-treatment derived from hydroxycarboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Polyesters Or Polycarbonates (AREA)
- Medicinal Preparation (AREA)
- Steroid Compounds (AREA)
- Light Receiving Elements (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868609537A GB8609537D0 (en) | 1986-04-18 | 1986-04-18 | Polyesters |
| GB8609537 | 1986-04-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK179987D0 DK179987D0 (da) | 1987-04-08 |
| DK179987A DK179987A (da) | 1987-10-19 |
| DK167195B1 true DK167195B1 (da) | 1993-09-13 |
Family
ID=10596456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK179987A DK167195B1 (da) | 1986-04-18 | 1987-04-08 | Fremgangsmaade til fremstilling af polyestere |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US4789726A (fi) |
| EP (1) | EP0244114B1 (fi) |
| JP (1) | JP2553076B2 (fi) |
| AT (1) | ATE52268T1 (fi) |
| AU (1) | AU595594B2 (fi) |
| CA (1) | CA1279148C (fi) |
| DE (1) | DE3762421D1 (fi) |
| DK (1) | DK167195B1 (fi) |
| ES (1) | ES2014474B3 (fi) |
| FI (1) | FI89505C (fi) |
| GB (1) | GB8609537D0 (fi) |
| GR (1) | GR3001199T3 (fi) |
| HU (1) | HU197032B (fi) |
| IE (1) | IE59961B1 (fi) |
| IL (1) | IL82032A (fi) |
| NO (1) | NO169017C (fi) |
| NZ (1) | NZ220011A (fi) |
| PT (1) | PT84682B (fi) |
| ZA (1) | ZA872206B (fi) |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3708915C2 (de) * | 1987-03-19 | 1996-04-04 | Boehringer Ingelheim Kg | Verfahren zur Herstellung von Lactid |
| JPH0613602B2 (ja) * | 1987-07-14 | 1994-02-23 | 三井東圧化学株式会社 | ｄ▲ｌ▼−乳酸−グリコール酸共重合物の製造方法 |
| US5180765A (en) * | 1988-08-08 | 1993-01-19 | Biopak Technology, Ltd. | Biodegradable packaging thermoplastics from lactides |
| US5424346A (en) * | 1988-08-08 | 1995-06-13 | Ecopol, Llc | Biodegradable replacement of crystal polystyrene |
| DE3936191C2 (de) * | 1989-10-31 | 1996-10-17 | Boehringer Ingelheim Kg | Neue Copolymere aus Milchsäure und Weinsäure, ihre Herstellung sowie ihre Verwendung |
| JPH04226125A (ja) * | 1990-06-23 | 1992-08-14 | Boehringer Ingelheim Kg | ポリ−ｄ，ｌ−ラクチドの製造方法及び活性物質の担体としてのそれらの使用 |
| US5403595A (en) * | 1991-05-07 | 1995-04-04 | Dynagen, Inc. | Controlled, sustained release delivery system for smoking cessation |
| US5486362A (en) * | 1991-05-07 | 1996-01-23 | Dynagen, Inc. | Controlled, sustained release delivery system for treating drug dependency |
| ZA924811B (en) * | 1991-06-28 | 1993-12-29 | Endorecherche Inc | Controlled release systems and low dose androgens |
| US5142023A (en) * | 1992-01-24 | 1992-08-25 | Cargill, Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
| US6326458B1 (en) | 1992-01-24 | 2001-12-04 | Cargill, Inc. | Continuous process for the manufacture of lactide and lactide polymers |
| US5258488A (en) * | 1992-01-24 | 1993-11-02 | Cargill, Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
| US6005067A (en) * | 1992-01-24 | 1999-12-21 | Cargill Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
| US5247058A (en) * | 1992-01-24 | 1993-09-21 | Cargill, Incorporated | Continuous process for manufacture of lactide polymers with controlled optical purity |
| US5247059A (en) * | 1992-01-24 | 1993-09-21 | Cargill, Incorporated | Continuous process for the manufacture of a purified lactide from esters of lactic acid |
| US5780051A (en) * | 1992-04-02 | 1998-07-14 | Dynagen, Inc. | Methods and articles of manufacture for nicotine cessation and monitoring nicotine use |
| DE4218268C2 (de) * | 1992-06-03 | 1997-01-16 | Boehringer Ingelheim Kg | Verfahren zur Reinigung bioresorbierbarer Polyester |
| US5922340A (en) * | 1992-09-10 | 1999-07-13 | Children's Medical Center Corporation | High load formulations and methods for providing prolonged local anesthesia |
| ATE199944T1 (de) * | 1992-10-02 | 2001-04-15 | Cargill Inc | Schmelzstabiles lactidpolymergewebe und verfahren zu seiner herstellung |
| BR9305658A (pt) * | 1992-10-02 | 1996-11-26 | Cargill Inc | Papel tendo um polímero de lactideo estável em fusao e processo para sua produçao |
| US6005068A (en) | 1992-10-02 | 1999-12-21 | Cargill Incorporated | Melt-stable amorphous lactide polymer film and process for manufacture thereof |
| US5338822A (en) * | 1992-10-02 | 1994-08-16 | Cargill, Incorporated | Melt-stable lactide polymer composition and process for manufacture thereof |
| TW333456B (en) * | 1992-12-07 | 1998-06-11 | Takeda Pharm Ind Co Ltd | A pharmaceutical composition of sustained-release preparation the invention relates to a pharmaceutical composition of sustained-release preparation which comprises a physiologically active peptide. |
| JP3309502B2 (ja) * | 1993-07-12 | 2002-07-29 | 大日本インキ化学工業株式会社 | 生分解性ポリエステル系ポリマーの連続製造法 |
| AU689130B2 (en) * | 1993-10-15 | 1998-03-26 | H.B. Fuller Licensing And Financing Inc. | Biodegradable/compostable hot melt adhesives comprising polyester of lactic acid |
| US5942241A (en) | 1995-06-09 | 1999-08-24 | Euro-Celtique, S.A. | Formulations and methods for providing prolonged local anesthesia |
| US5747060A (en) * | 1996-03-26 | 1998-05-05 | Euro-Celtique, S.A. | Prolonged local anesthesia with colchicine |
| AU733867B2 (en) | 1996-06-24 | 2001-05-31 | Euro-Celtique S.A. | Methods for providing safe local anesthesia |
| US6046187A (en) | 1996-09-16 | 2000-04-04 | Children's Medical Center Corporation | Formulations and methods for providing prolonged local anesthesia |
| ES2221019T3 (es) | 1996-10-31 | 2004-12-16 | Takeda Chemical Industries, Ltd. | Preparacion de liberacion mantenida. |
| WO1999001114A1 (en) | 1997-07-02 | 1999-01-14 | Euro-Celtique, S.A. | Prolonged anesthesia in joints and body spaces |
| EP1310517B2 (en) * | 2000-08-07 | 2010-11-17 | Wako Pure Chemical Industries, Ltd. | Lactic acid polymer and process for producing the same |
| JP2005065771A (ja) * | 2003-08-20 | 2005-03-17 | Jms Co Ltd | 生体吸収性高分子の製造方法 |
| US20050227101A1 (en) * | 2004-04-12 | 2005-10-13 | Carpenter Brandon C | Wrapper for sandwiches and other products |
| US7342048B2 (en) * | 2005-04-28 | 2008-03-11 | Nipro Corporation | Bioabsorbable pharmaceutical formulation |
| CN101778884A (zh) * | 2007-09-12 | 2010-07-14 | 株式会社吴羽 | 低熔融粘度聚乙醇酸和其制备方法以及该低熔融粘度聚乙醇酸的用途 |
| WO2022163035A1 (ja) * | 2021-01-26 | 2022-08-04 | 株式会社カネカ | ポリエステル生産システム、ポリエステル生産方法、及びプログラム |
| LU502257B1 (en) | 2022-06-13 | 2023-12-13 | Univ Hamburg | Method for the depolymerization of a poly(alpha-hydroxy acid) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3297033A (en) * | 1963-10-31 | 1967-01-10 | American Cyanamid Co | Surgical sutures |
| DE1645629A1 (de) * | 1966-05-16 | 1970-10-22 | Wolfen Filmfab Veb | Verfahren zur Molekulargewichtsregelung bei der Herstellung von Polyestern durch Polymerisation von Glykolid |
| US3773919A (en) * | 1969-10-23 | 1973-11-20 | Du Pont | Polylactide-drug mixtures |
| US3839297A (en) * | 1971-11-22 | 1974-10-01 | Ethicon Inc | Use of stannous octoate catalyst in the manufacture of l(-)lactide-glycolide copolymer sutures |
| DE2442387C3 (de) * | 1974-09-04 | 1981-09-10 | Bayer Ag, 5090 Leverkusen | Verfahren zur kontinuierlichen hydrolytischen Aufspaltung von hydrolysierbaren Kunststoffabfällen |
| US4273920A (en) * | 1979-09-12 | 1981-06-16 | Eli Lilly And Company | Polymerization process and product |
| DE3176533D1 (en) * | 1980-10-20 | 1987-12-23 | American Cyanamid Co | Modification of polyglycolic acid to achieve variable in-vivo physical properties |
| IE52535B1 (en) * | 1981-02-16 | 1987-12-09 | Ici Plc | Continuous release pharmaceutical compositions |
| US4443430A (en) * | 1982-11-16 | 1984-04-17 | Ethicon, Inc. | Synthetic absorbable hemostatic agent |
| CA1256638A (en) * | 1984-07-06 | 1989-06-27 | Motoaki Tanaka | Polymer and its production |
-
1986
- 1986-04-18 GB GB868609537A patent/GB8609537D0/en active Pending
-
1987
- 1987-03-24 IE IE76687A patent/IE59961B1/en not_active IP Right Cessation
- 1987-03-25 ZA ZA872206A patent/ZA872206B/xx unknown
- 1987-03-27 IL IL82032A patent/IL82032A/xx not_active IP Right Cessation
- 1987-04-02 US US07/033,196 patent/US4789726A/en not_active Expired - Lifetime
- 1987-04-07 AU AU71156/87A patent/AU595594B2/en not_active Expired
- 1987-04-08 DK DK179987A patent/DK167195B1/da active IP Right Grant
- 1987-04-09 FI FI871564A patent/FI89505C/fi not_active IP Right Cessation
- 1987-04-13 DE DE8787303220T patent/DE3762421D1/de not_active Expired - Lifetime
- 1987-04-13 ES ES87303220T patent/ES2014474B3/es not_active Expired - Lifetime
- 1987-04-13 AT AT87303220T patent/ATE52268T1/de not_active IP Right Cessation
- 1987-04-13 EP EP87303220A patent/EP0244114B1/en not_active Expired - Lifetime
- 1987-04-15 PT PT84682A patent/PT84682B/pt unknown
- 1987-04-15 HU HU871654A patent/HU197032B/hu unknown
- 1987-04-15 NO NO871625A patent/NO169017C/no unknown
- 1987-04-16 CA CA000534914A patent/CA1279148C/en not_active Expired - Lifetime
- 1987-04-16 NZ NZ220011A patent/NZ220011A/en unknown
- 1987-04-17 JP JP62093413A patent/JP2553076B2/ja not_active Expired - Lifetime
-
1990
- 1990-04-26 GR GR89400171T patent/GR3001199T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GR3001199T3 (en) | 1992-06-30 |
| EP0244114A1 (en) | 1987-11-04 |
| HU197032B (en) | 1989-02-28 |
| IE870766L (en) | 1987-10-18 |
| JP2553076B2 (ja) | 1996-11-13 |
| AU595594B2 (en) | 1990-04-05 |
| DE3762421D1 (de) | 1990-05-31 |
| ATE52268T1 (de) | 1990-05-15 |
| CA1279148C (en) | 1991-01-15 |
| FI871564A (fi) | 1987-10-19 |
| FI89505B (fi) | 1993-06-30 |
| ZA872206B (en) | 1987-12-30 |
| NO871625L (no) | 1987-10-19 |
| FI89505C (fi) | 1993-10-11 |
| FI871564A0 (fi) | 1987-04-09 |
| NO169017B (no) | 1992-01-20 |
| EP0244114B1 (en) | 1990-04-25 |
| NO871625D0 (no) | 1987-04-15 |
| PT84682A (en) | 1987-05-01 |
| HUT44051A (en) | 1988-01-28 |
| PT84682B (pt) | 1989-12-29 |
| DK179987A (da) | 1987-10-19 |
| IL82032A0 (en) | 1987-10-20 |
| DK179987D0 (da) | 1987-04-08 |
| AU7115687A (en) | 1987-10-22 |
| US4789726A (en) | 1988-12-06 |
| JPS62252421A (ja) | 1987-11-04 |
| NZ220011A (en) | 1990-04-26 |
| NO169017C (no) | 1992-04-29 |
| GB8609537D0 (en) | 1986-05-21 |
| IL82032A (en) | 1990-12-23 |
| IE59961B1 (en) | 1994-05-04 |
| ES2014474B3 (es) | 1990-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DK167195B1 (da) | Fremgangsmaade til fremstilling af polyestere | |
| Bendix | Chemical synthesis of polylactide and its copolymers for medical applications | |
| Zhou et al. | Synthesis and characterization of biodegradable low molecular weight aliphatic polyesters and their use in protein‐delivery systems | |
| US5508378A (en) | Method for producing polylactic acid | |
| Singh et al. | Structure‐processing‐property relationship of poly (glycolic acid) for drug delivery systems 1: synthesis and catalysis | |
| Lasprilla et al. | Synthesis and characterization of poly (lactic acid) for use in biomedical field | |
| Cai et al. | Synthesis and degradation of a tri-component copolymer derived from glycolide, L-lactide, and ε-caprolactone | |
| EP0500098B1 (en) | Process for the synthesis of lactic acid polymers in the solid state and products thus obtained | |
| US20060047088A1 (en) | High-molecular aliphatic polyester and process for producing the same | |
| Proikakis et al. | Synthesis and characterization of low molecular weight polylactic acid | |
| JP7116169B2 (ja) | 乳酸－グリコール酸共重合体及びその製造方法 | |
| RU2589876C2 (ru) | Способ получения звездообразных полимеров | |
| CN111087596B (zh) | 连续开环制备聚乙交酯的方法及催化剂和制备方法 | |
| RU2637923C1 (ru) | Способ получения (со)полимера гликолида и/или лактида для изготовления рассасывающихся хирургических изделий | |
| KR20150132318A (ko) | 2개 이상의 카르복실산 기를 갖는 모놀 및 다이올 중합 개시제로부터 제조된 폴리락톤 중합체 | |
| EP1136511B1 (en) | PROCESS FOR PRODUCING POLY(p-DIOXANONE), AND POLY(p-DIOXANONE) MONOFILAMENT AND PROCESS FOR PRODUCING THE SAME | |
| JPS61236820A (ja) | 低分子量グリコ−ル酸−乳酸共重合体 | |
| JP2606260B2 (ja) | ブロック共重合体 | |
| JP3248597B2 (ja) | 脂肪族ポリエステルの製造方法 | |
| JP3747563B2 (ja) | ポリ乳酸組成物およびその製造方法ならびに該組成物の成形品 | |
| KR20200044085A (ko) | 개선된 재흡수성 중합체 정제 방법 | |
| RU2802821C1 (ru) | Способ очистки полигликолида и его сополимеров с высоким содержанием гликолида | |
| EP3303445A1 (en) | A one step process for the pelletisation of poly lactic acid without melt processing | |
| WO2023059643A1 (en) | Poly(ethylene brassylate-co-dioxanone) copolymers, method of synthesis and biomedical devices made therefrom | |
| lakshmi Prabha et al. | Design, Synthesis and Characterisation of Novel Biodegradable Aliphatic Copolyesters-Poly (ethylene sebacate-co-butylene succinate) and Poly (ethylene sebacate-co-butylene adipate) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) |