发明名称 |
METHOD FOR PREPARING A POLYESTER UNDER SPECIFIC ESTERIFICATION CONDITIONS |
摘要 |
A polyester including poly(ethylene 2,5-furandicarboxylate is prepared by esterification of a starting mixture including 2,5-furandicarboxylic acid and ethylene glycol to form an ester composition, and by subjecting the ester composition thus obtained to polycondensation at reduced pressure in the presence of a polycondensation catalyst to obtain a polycondensate. The mixture is reacted under conditions such that the esterification potential as defined by Esterification Potential (EsPo)=(MR−1)2*PH2O(T), where MR represents the molar ratio of ethylene glycol over 2,5-furandicarboxylic acid, MR being greater than 1; PH2O(T) represents the pure component vapor pressure (in bar) of water at temperature T, which is the final reaction temperature in the esterification mixture before the pressure is reduced to effect the polycondensation, is less than 0.8. |
申请公布号 |
EP3116931(A1) |
申请公布日期 |
2017.01.18 |
申请号 |
EP20150715478 |
申请日期 |
2015.03.11 |
申请人 |
Furanix Technologies B.V. |
发明人 |
KOLSTAD, Jeffrey John;DAM, Matheus Adrianus;WANG, Bing;SCHIAVONE, Robert Joseph;ANDREWS, Marion L.;PASCHKE, Edward E. |
分类号 |
C08G63/181 |
主分类号 |
C08G63/181 |
代理机构 |
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代理人 |
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地址 |
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