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PET-SSP for Tyre Cord

Postcondensation Heating/2nd crystallization/drying Nitrogen/hot loop [Pg.176]

Generally, two to three preheater sections are used for the product heat-up by using nitrogen, and two to three sections are required to reach the final viscosity. Cooling is carried out either in an additional compartment or with a fluid bed. Typically, for a viscosity increase from 0.60 up to 1.0, the crystallinity increases to ca. 62 vol%, and the carboxyl end group concentration decreases by approximately 10-15 mol/t. This equates to both esterification and transesterification contributing half of the IV increase if side reactions are neglected. [Pg.176]


See other pages where PET-SSP for Tyre Cord is mentioned: [Pg.175]    [Pg.175]   


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