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Topic: How to remove PVA in DMF solution?  (Read 5561 times)

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Offline luxury

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How to remove PVA in DMF solution?
« on: July 28, 2007, 09:42:06 PM »
There are about 1000ppm polyvinyl alcohol in DMF solution, which contains about 70% water. And its amount is 30t/h.
Does anybody know good methods to remove PVA to less than 50ppm?
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