More particularly, it is concerned with a process for obtaining a highly purified polar vinyl compound from a mixture of a polar vinyl compound, impurities such as polymerization inhibiting {HEAD ~ substances} and starting materials used in preparation of the polar vinyl compound, that is, from a polar vinyl compound containing {TAIL ~ impurities}  
More particularly , it is concerned with a process for obtaining a highly purified polar vinyl compound from a mixture of a polar vinyl compound , impurities such as polymerization inhibiting { HEAD ~ substances } and starting materials used in preparation of the polar vinyl compound , that is , from a polar vinyl compound containing { TAIL ~ impurities }
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