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US5300229A Process for removing colored components from solvent for polyacrylonitrile 失效
从聚丙烯腈溶剂中除去有色成分的方法

Process for removing colored components from solvent for
polyacrylonitrile
摘要:
A process for removing colored components from a recovered inorganic solvent of polyacrylonitrile, without an appreciable decrease in the concentration of active components, using a reverse osmosis membrane whose NaCl rejection is in the range of 10% to 97%, under a permeation pressure lower than 20 kg/cm.sup.2.
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