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    AN EFFICIENT PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT POLYESTER
    2.
    发明申请
    AN EFFICIENT PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT POLYESTER 审中-公开
    用于生产高分子量聚酯的有效方法

    公开(公告)号：WO2009060470A3

    公开(公告)日：2009-07-23

    申请号：PCT/IN2008000452

    申请日：2008-07-19

    Applicant: RELIANCE IND LTD ,  AGARWAL UDAY SHANKAR ,  BOON WYNDHAM HENRY ,  WADEKAR SHREERAM ASHOK ,  DUBEY RAJAN ,  TIBUDE AJAY RAMLAL

    Inventor： AGARWAL UDAY SHANKAR ,  BOON WYNDHAM HENRY ,  WADEKAR SHREERAM ASHOK ,  DUBEY RAJAN ,  TIBUDE AJAY RAMLAL

    IPC: C08G63/80 ,  C08G63/16 ,  C08G63/183 ,  C08G63/78

    CPC classification number: C08G63/80 ,  C08G63/183

    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.

    Abstract translation: 本发明公开了一种制备高分子量聚酯树脂的有效方法，其具有IV为约0.5dl / g至约1.2dl / g的低分子量预聚物，其IV为约0.2dl / g至约0.45dl / g 在酯化步骤或熔融聚合步骤期间的任何步骤，但在固态聚合反应中减少低聚物挥发之前的颗粒形成剂方法之前，在任何步骤中加入路易斯酸如磺酸。 路易斯酸如磺酸选自甲磺酸，对甲苯磺酸，甲苯磺酸，苯磺酸或二甲苯磺酸。 本发明还公开了具有约0.2dl / g至约0.45dl / g的IV的低分子量结晶预聚物和通过上述方法制备的IV为约0.5dl / g至约1.2dl / g的高分子量聚酯树脂 。

    AN EFFICIENT PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT POLYESTER
    6.
    发明申请
    AN EFFICIENT PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT POLYESTER 审中-公开
    生产高分子量聚酯的有效工艺

    公开(公告)号：WO2009060470A2

    公开(公告)日：2009-05-14

    申请号：PCT/IN2008/000452

    申请日：2008-07-19

    Applicant: RELIANCE INDUSTRIES LIMITED ,  AGARWAL, Uday, Shankar ,  BOON, Wyndham, Henry ,  WADEKAR, Shreeram, Ashok ,  DUBEY, Rajan ,  TIBUDE, Ajay, Ramlal

    Inventor： AGARWAL, Uday, Shankar ,  BOON, Wyndham, Henry ,  WADEKAR, Shreeram, Ashok ,  DUBEY, Rajan ,  TIBUDE, Ajay, Ramlal

    IPC: C08G63/78 ,  C08G63/80 ,  C08G63/183

    CPC classification number: C08G63/80 ,  C08G63/183

    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.

    Abstract translation: 本发明公开了一种有效的方法，用于由IV为约0.2dl / g至约1.2dl / g的低分子量预聚物生产具有约0.5dl / g至约1.2dl / g的IV的高分子量聚酯树脂， 通过在酯化步骤或熔融聚合步骤期间但在颗粒形成剂过程之前的任何步骤添加路易斯酸如磺酸以减少固态聚合过程中的低聚物挥发，从而提高至约0.45dl / g。 路易斯酸如磺酸选自甲烷磺酸，对甲苯磺酸，甲苯磺酸，苯磺酸或二甲苯磺酸。 本发明还公开了IV为约0.2dl / g至约0.45dl / g的低分子量结晶预聚物和由上述方法制得的IV为约0.5dl / g至约1.2dl / g的高分子量聚酯树脂

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