POLYESTER POLYMERS WITH LOW ACETALDEHYDE GENERATION RATES AND HIGH VINYL ENDS CONCENTRATION
A polyester polymer comprising alkylene arylate units, said polymer having an It.V. of at least 0.72 dl/g, a vinyl ends concentration of at least 0.8 microequivalents per gram, an AA generation rate of less than 20 ppm are prepared by addition of a catalyst deactivator either late in the polycondens...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English French German |
Published |
14.10.2020
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A polyester polymer comprising alkylene arylate units, said polymer having an It.V. of at least 0.72 dl/g, a vinyl ends concentration of at least 0.8 microequivalents per gram, an AA generation rate of less than 20 ppm are prepared by addition of a catalyst deactivator either late in the polycondensation or upon remelting of a solid polyester polymer. |
---|---|
Bibliography: | Application Number: EP20080705609 |