| 摘要 |
A process for heating a polymer-containing stream being transferred through a heater comprising a transfer line for the stream and means for heating the transfer line is disclosed, wherein the temperature of the internal surface of the transfer line at any point along its length is maintained at 10°C or more below the softening point of the polymer, preferably 20°C or more below the softening point, where the softening point of the polymer is defined as the Vicat softening temperature according to ASTM D 1525, ISO 306.
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