发明名称 |
METHOD FOR INCREASING THE MOLECULAR WEIGHT OF A POLYMER GRANULATE |
摘要 |
The invention relates to a polymer granulate from a polycondensation unit. Said granulate is at least partially crystallised and brought into direct contact with a nitrogen-containing treatment gas in a postcondensation. Compared to the granulate from the polycondensation unit, the temperature of the polymer granulate in the postcondensation increases to between 175 and 250 DEG . Nitrogen-containing waste gas from the polycondensation unit is mixed with the treatment gas in a volume ratio from 1:1 to 1:1000 before being guided into the postcondensation. |
申请公布号 |
WO0218470(A3) |
申请公布日期 |
2002.06.27 |
申请号 |
WO2001EP10096 |
申请日期 |
2001.09.01 |
申请人 |
ZIMMER AKTIENGESELLSCHAFT;KIRSTEN, KLAUS |
发明人 |
KIRSTEN, KLAUS |
分类号 |
C08G85/00;C08G63/80 |
主分类号 |
C08G85/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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