• 专利标题:   Purification method of vinylene carbonate involves removing the dimethyl carbonate solvent in the crude vinylene carbonate, obtaining the ethylene carbonate solution after removing the solvent.
  • 专利号:   CN113666901-A
  • 发明人:   MA J, MIAO L, WANG S, YAN H, ZHU Z, JIA G
  • 专利权人:   SHANDONG HAIKE INNOVATION RES INST CO
  • 国际专利分类:   C07D317/40
  • 专利详细信息:   CN113666901-A 19 Nov 2021 C07D-317/40 202204 Chinese
  • 申请详细信息:   CN113666901-A CN11050417 08 Sep 2021
  • 优先权号:   CN11050417

▎ 摘  要

NOVELTY - Purification method of vinylene carbonate involves removing the dimethyl carbonate solvent in the crude vinylene carbonate, obtaining the ethylene carbonate solution after removing the solvent, the ethylene carbonate solution after removing the solvent is added to the fractionating tower, then adding a certain amount of graphene modified active carbon into the fractionating tower decompressing and fractionating the vinylene carbonate solution after removing solvent in the fractionating tower, collecting fraction, obtaining the purified vinylene carbonate. USE - Purification method of vinylene carbonate. ADVANTAGE - The purification method of vinylene carbonate is highly efficient.