Discharging granular linear polycondensates
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United States of America Patent
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Mar 24, 1981
Grant Date -
N/A
app pub date -
Dec 1, 1978
filing date -
Dec 1, 1978
priority date (Note) -
Expired
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Abstract
A process for discharging a granular organic polymer, which is sensitive to molecular oxygen at elevated temperatures, from a treatment zone in which it has been continuously treated, at above 70.degree. C., with an inert gas which is free from molecular oxygen, and has subsequently been cooled, which process comprises withdrawing the polymer at .ltoreq.50.degree. C. through a narrow elongate tubular discharge zone, the said zone always being filled with granular polymer.
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