Invention Application
US20080064797A1 Process For The Production Of Polyethylene Terephthalate Copolyester, Copolyester Obtained Thereby And Its Use And Catalyst Useful In The Process
审中-公开
制备聚对苯二甲酸乙二醇酯共聚物的方法，获得的共聚酯及其在该方法中有用的用途和催化剂
- Patent Title: Process For The Production Of Polyethylene Terephthalate Copolyester, Copolyester Obtained Thereby And Its Use And Catalyst Useful In The Process
- Patent Title (中): 制备聚对苯二甲酸乙二醇酯共聚物的方法，获得的共聚酯及其在该方法中有用的用途和催化剂
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Application No.: US11579286Application Date: 2005-04-08
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Publication No.: US20080064797A1Publication Date: 2008-03-13
- Inventor: Zahir Bashir , Jamil Siddiqui , Venkatanathan Sampath , Khalid Al-Luhaidan
- Applicant: Zahir Bashir , Jamil Siddiqui , Venkatanathan Sampath , Khalid Al-Luhaidan
- Priority: EP04010616.3 20040505
- International Application: PCT/IB05/01577 WO 20050408
- Main IPC: C08K5/49
- IPC: C08K5/49 ; C01B15/043 ; C01B17/20 ; C01B31/00 ; C08G63/127
Abstract:
The present invention relates to a process for the production of polyethylene terephthalate copolyester from terephthalic acid, isophthalic acid and ethylene glycol, comprising the steps of: a) preparing a catalyst composition comprising a zinc compound being present such that the elemental zinc content is in a range of about 50 to about 500 ppm, preferably about 200 to about 500 ppm, most preferably about 180 to about 260 ppm, based on the copolyester, b) placing the catalyst composition, terephthalic acid, isophthalic acid and ethylene glycol in a vessel, and c) reacting the terephthalic acid, isophthalic acid and ethylene glycol in an esterification step and a polycondensation step to obtain polyethylene terephthalate copolyester; to the copolyester obtained thereby and its use, as well as to a catalyst composition suitable in the inventive process.
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