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US5292804A Separation of azeotropes in poly(vinyl alcohol) process 失效
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Separation of azeotropes in poly(vinyl alcohol) process
摘要:
In a process for preparing poly(vinyl alcohol), an improved method for separating the methanol/acetate azeotropes that result from said process. The azeotropes are separated by selective adsorption of methanol on an adsorbent followed by regeneration of the adsorbent with hot methanol vapor.
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