Process for removing metals from vinylphenol polymers
AssigneeMaruzen Petrochemical Co., Ltd.
InventorsTadashi Matsumoto, Mitsuru Akaho
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Abstract
The present invention provides an easily employed and economical process for removing substantially all of the metals from vinylphenol polymers by dissolving the vinylphenol polymer in a solvent and contacting the solution with a strong acidic cation exchange resin. In this way, vinylphenol polymers of high purity are attained, with a metal content which is virtually eliminated or substantially reduced.
Claims14
A process for removing alkali metals, alkaline earth metals, and transition metals from a vinylphenol polymer characterized by dissolving said vinylphenol polymer into a solvent to make a solution and contacting said solution with a strongly acidic cation exchange resin.
Dependencies are inferred from the claim text.