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

Info

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
Grant status
Application
Patent type
Prior art keywords
dl
sulfonic acid
molecular weight
iv
high molecular
Prior art date
Application number
PCT/IN2008/000452
Other languages
French (fr)
Other versions
WO2009060470A2 (en )
Inventor
Uday Shankar Agarwal
Wyndham Henry Boon
Shreeram Ashok Wadekar
Rajan Dubey
Ajay Ramlal Tibude
Original Assignee
Reliance Ind Ltd
Uday Shankar Agarwal
Wyndham Henry Boon
Shreeram Ashok Wadekar
Rajan Dubey
Ajay Ramlal Tibude
Priority date (The priority date 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 date listed.)
Filing date
Publication date

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78Preparation processes
    • C08G63/80Solid-state polycondensation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16Dicarboxylic acids and dihydroxy compounds
    • C08G63/18Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181Acids containing aromatic rings
    • C08G63/183Terephthalic acids

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.
PCT/IN2008/000452 2007-07-19 2008-07-19 An efficient process for the production of high molecular weight polyester WO2009060470A3 (en)

Priority Applications (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 true WO2009060470A2 (en) 2009-05-14
WO2009060470A3 true true WO2009060470A3 (en) 2009-07-23

Family

ID=40626306

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2008/000452 WO2009060470A3 (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) WO2009060470A3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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 Type
WO2009060470A2 (en) 2009-05-14 application

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