WO2009060470A3 - An efficient process for the production of high molecular weight polyester - Google Patents
An efficient process for the production of high molecular weight polyester Download PDFInfo
- Publication number
- WO2009060470A3 WO2009060470A3 PCT/IN2008/000452 IN2008000452W WO2009060470A3 WO 2009060470 A3 WO2009060470 A3 WO 2009060470A3 IN 2008000452 W IN2008000452 W IN 2008000452W WO 2009060470 A3 WO2009060470 A3 WO 2009060470A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sulfonic acid
- molecular weight
- high molecular
- weight polyester
- production
- Prior art date
Links
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
- C08G63/78—Preparation processes
- C08G63/80—Solid-state polycondensation
-
- 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
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention discloses an efficient process for the production of high molecular weight polyester resin having IV of about 0.5 dl/g to about 1.2 dl/g from low molecular weight prepolymer having IV of about 0.2 dl/g to about 0.45 dl/g by adding a Lewis acid such as sulfonic acid at any steps during the esterification step or the melt polymerization step but before a particle former process to reduce the oligomer volatilization during solid state polymerization. The Lewis acid such as sulfonic acid is selected from methane sulfonic acid, para toluene sulfonic acid, toluene sulfonic acid, benzene sulfonic acid or xylene sulfonic acid. The present invention also discloses a low molecular weight crystalline prepolymer having IV of about 0.2 dl/g to about 0.45 dl/g and high molecular weight polyester resin having IV of about 0.5 dl/g to about 1.2 dl/g produced by the above process.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN1389/MUM/2007 | 2007-07-19 | ||
IN1389MU2007 | 2007-07-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009060470A2 WO2009060470A2 (en) | 2009-05-14 |
WO2009060470A3 true WO2009060470A3 (en) | 2009-07-23 |
Family
ID=40626306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IN2008/000452 WO2009060470A2 (en) | 2007-07-19 | 2008-07-19 | An efficient process for the production of high molecular weight polyester |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2009060470A2 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB948706A (en) * | 1959-12-15 | 1964-02-05 | Onderzoekings Inst Res | A process for the preparation of macromolecular polymethylene terephthalates, and shaped articles made therefrom |
EP0102913A2 (en) * | 1982-09-07 | 1984-03-14 | The Goodyear Tire & Rubber Company | Polyterephthalates having high clarity and process for making same |
EP0105016A1 (en) * | 1982-09-07 | 1984-04-04 | The Goodyear Tire & Rubber Company | Polyisophthalate and copolymers thereof having reduced cyclic dimer content, and a process for making the same |
US20060084781A1 (en) * | 2004-10-04 | 2006-04-20 | Kelsey Donald R | Process for producing polytrimethylene terephthalate |
-
2008
- 2008-07-19 WO PCT/IN2008/000452 patent/WO2009060470A2/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB948706A (en) * | 1959-12-15 | 1964-02-05 | Onderzoekings Inst Res | A process for the preparation of macromolecular polymethylene terephthalates, and shaped articles made therefrom |
EP0102913A2 (en) * | 1982-09-07 | 1984-03-14 | The Goodyear Tire & Rubber Company | Polyterephthalates having high clarity and process for making same |
EP0105016A1 (en) * | 1982-09-07 | 1984-04-04 | The Goodyear Tire & Rubber Company | Polyisophthalate and copolymers thereof having reduced cyclic dimer content, and a process for making the same |
US20060084781A1 (en) * | 2004-10-04 | 2006-04-20 | Kelsey Donald R | Process for producing polytrimethylene terephthalate |
Also Published As
Publication number | Publication date |
---|---|
WO2009060470A2 (en) | 2009-05-14 |
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